Fused; Fiber Type DC (Nufern SM-9/105/125), MM (Nufern 105/125, 250), SM (SMF-28); 1250-1700 nm; Number of Legs 1x2, 2x2; SM IL ≤0.5-≤3.7 dB; Dimensions Ø2.9x50.8 mm Gooch & Housego’s (G&H) 18-X series of fused dual-clad fiber (FDCF) couplers and optical splitters offers a high coupling efficiency for multi mode (MM) fiber over a broad wavelength range with a low wavelength dependent loss. Light launched in the single mode core of the input single mode (SM) fiber or dual-clad (DC) fiber will transmit 100% through G&H’s 18-XXXXX-XX-XXXXX series FDCF coupler directly to the inner core of the output DC fiber, while light launched in the inner cladding of the DC fiber will couple to the multi mode (MM) fiber with at least 50% coupling efficiency depending on the core size of the MM fiber as a bigger MM fiber (i.e. 250 µm core) results in a higher coupling transmission percentage (70% or higher) to the MM fiber. As different DC fibers have different operating wavelength ranges, proper choice of SM fiber is very important for building a high-performance FDCF coupler. The typical 2x2 FDCF couplers have DC fiber in two opposite leads and MM fiber in the other two arms. The DC input fiber can be optionally replaced with a matching SM fiber and the MM output fiber can be terminated to form a 2x1 FDCF coupler. Key Features: Broad Wavelength Range: 1250 to 1700 nm 100% Transmission for single mode (SM) Fiber Input High Coupling Efficiency to Multi Mode (MM) Fiber Low Wavelength Dependent Loss Fiber Type: Double Clad (DC, Nufern SM-9/105/125 µm), Multi Mode (MM, Nufern 105/125 µm, Nufern 250 µm), Single Mode (SM, SMF-28) Number of Legs: 1x2, 2x2 Single Mode (SM) Insertion Loss (IL) for Port 1 -> Port 3 (Core): ≤0.5 dB Single Mode (SM) Insertion Loss (IL) for Port 1 -> Port 2 (Core): ≤2.5, ≤3.7 dB Dimensions: Ø2.9 x 50.8 mm Applications: Instrumentation; OCT Systems; Gyroscopes; Test and Measurement; Sensors

Fused, Visible Wavelength RGB; Fiber Type Panda PM; 400-680 nm; Number of Legs 1x2, 2x2; Splitting Ratio 50/50 to 1/99; IL 0.6-25 dB; Dimensions Ø2.9x40-Ø5.5x34 mm Gooch & Housego’s fused pure silica (52-X67 - XX-XX-XXX0 X) or visible wavelength RGB (52-X65 XX-XX-XXXXX), fiber-based, polarization maintaining (PM), 1x2 and 2x2 fiber optic couplers, taps and optical signal splitters offer high extinction ratio (ER) with polarization launch into a single or dual axis (slow axis and fast axis). Gooch & Housego (G&H) utilizes a proprietary, proven fused biconical taper (FBT) process to manufacture high-grade PM couplers, offering high extinction ratio with minimum optical loss. G&H selects PM fiber from different suppliers to accommodate your application-specific operating wavelengths. These high-quality PM couplers are manufactured mainly using panda fiber which guarantees a high polarization extinction ratio (PER). Operating wavelengths range from 400 nm to 680 nm, and coupling ratio offerings range from 50/50, 20/80, 10/90, 5/95 and 1/99 etc. Other coupling ratio options are available upon request. 52-X6X PM fiber couplers are available in several mechanical package options with multiple connector options like FC/PC, FC/APC etc. Key Features: Operating Wavelength Range: 400 to 680 nm High Polarization Extinction Ratio (PER): ≥18, ≥20 dB Polarization Launch into a Single or Dual Axis (Slow and Fast) Coupling Ratio: 50/50, 20/80, 10/90, 5/95, 1/99, Other Ratio Options on Request Number of Legs: 1x2, 2x2 Low Excess Optical Loss: <0.5 to <1.2 dB Insertion Loss (IL): 0.6 to 25 dB Very Low Polarization Dependent Loss (PDL) Low Back-reflection – Return Loss (RL): ≥30 dB High Isolation High Reliability Power Handling: ≤500 mW Small Size: Ø2.9 x 40 to Ø5.5 x 34 mm Made Using Gooch & Housego’s Proven High-reliability FBT Process Applications: Aerospace; Telecom; Sensors; WDM Systems; Defense; Gyroscopes; Medical

Fused, Broadband; Fiber Type Panda PM, Bow-tie; 800-960 nm; Number of Legs 1x2, 2x2; Excess Loss <0.5 dB; PER ≥18, ≥20 dB; Dimensions Ø2.9x40, Ø3.9x50.8 mm Gooch & Housego’s 53-X89 series of broadband, fused, polarization maintaining (PM) fiber optic couplers, taps and optical signal splitters offer high extinction ratio (ER) with polarization launch into a single or dual axis (slow axis and fast axis). Gooch & Housego (G&H) utilizes a proprietary, proven fused biconical taper (FBT) process to manufacture high grade PM couplers including single wavelength and wavelength flattened (broadband/wideband). G&H’s fused PM fiber couplers/splitters offer high ER with minimum optical loss. Gooch & Housego selects PM fibers such as Panda and bow-tie from different suppliers to accommodate your application-specific operating wavelengths. Fused PM couplers usually operate over a certain wavelength band of ±20 nm. G&H’s latest innovative FBT wavelength flattening technology has expanded the operating wavelength band up to 50 nm, with performance comparable to G&H’s single mode (SM) WFCs (wavelength flattened couplers). G&H’s 53-X89 XX-XX-XXXXX fused broadband PM couplers are small in size and exhibit a flat coupling ratio response over a broadband of wavelength ranges. Splitters are available in a variety of coupling/splitting ratios. Key Features: Ultra-broad Bandwidth Operating Wavelength Range: 800 to 960 nm High Polarization Extinction Ratio (PER): ≥18, ≥20 dB Polarization Launch into a Single or Dual Axis (Slow and Fast) Number of Legs: 1x2, 2x2 Low Excess Optical Loss: <0.5 dB Without Connectors Excellent Uniformity Low Wavelength Dependent Loss High Directivity Dimensions: Ø2.9 x 40, Ø3.9 x 50.8 mm Applications: Instrumentation; OCT Systems; Gyroscopes; Test and Measurement; Sensors

Wavelength 266-1100 nm; Type IR, Visible, UV, Mid-IR; Scan Angle 4,9-60 mrad; Active Aperture 1.0-60 mm; Operating Frequency 9.4 µm-432 MHz; Optical Material Germanium, Sapphire, Fused Silica, Crystalline Quartz, Tellurium Dioxide G&H acousto-optic deflectors (AODF) provide precise spatial control of an optical beam, whether performing 1D or 2D scanning or executing beam deflection through a fixed angle. The acousto-optic deflectors offer highly uniform diffraction efficiency across the full scan angle, with consistent power throughput for scanning applications like material processing and digital imaging. Gooch & Housego offers a wide range of standard deflectors and RF drivers for wavelengths from 266-1500 nm. Key Features: Visible and NIR wavelength products based on tellurium dioxide crystals, grown in-house UV wavelength products based on fused silica and crystal quartz Broad bandwidth products based on a longitudinal mode approach using a phased array of piezoelectric elements High efficiency products based on slow shear deflection using parallel tangents off-axis interactions Selecting the right RF driver is important to achieve the desired scanning speed and accuracy. Deflectors used in scanning or writing applications require a variable frequency source which is both stable and highly linear. 2D UV beam scanning may be achieved by cascading two UV deflectors in series. Gooch & Housego’s flexible functionality AODF Dual Driver with phase synchronized outputs offers the optimum in RF driver control for 2D scanning.Applications: Digital Imaging; Heterodyne Interferometry; Laser Cooling; Laser Marking; Laser Tweezers; Material Processing; Micromachining; Microscopy; On-Line Process Control; Optical Inspection; Photolithography; Printing Series Wavelength Type Scan Angle Active Aperture Operating Frequency Optical Material Downloads AODF 4070 N/A Mid-IR 60 mrad 9 mm 9.4 µm Germanium Datasheet Driver Driver AODF 2690-UV 266 - 355 nm N/A up to 4.9 mrad up to 7 mm 100 - 432 MHz Sapphire Datasheet Driver Driver AODF 4200-UV 266 nm UV 5.5 mrad 1.0 x 60.0 mm 135 - 265 MHz Fused Silica Datasheet Driver Driver AODF 4170 355 nm UV 4.9 mrad 7 mm 130 - 210 MHz Crystalline Quartz Datasheet Driver Driver AODF 4100-UV 364 nm UV 29.5 mrad 4.0 x 14.0 mm 75 - 125 MHz Tellurium Dioxide Datasheet Driver Driver AODF 4200-VI 405 - 488 nm Visible 58 mrad 4.8 mm 150 - 250 MHz Tellurium Dioxide Datasheet Driver Driver AODF 4090-7 440 - 530 nm Visible 44 mrad 8.5 mm 60 - 115 MHz Tellurium Dioxide Datasheet Driver Driver AODF 4100-VI 488 nm Visible 39.5 mrad 4.0 - 14 mm 75 - 125 MHz Tellurium Dioxide Datasheet Driver Driver AODF 4055-4 780 - 980 nm IR 44.3 mrad 3.5 x 14 mm 35 - 70 MHz Tellurium Dioxide Datasheet Driver Driver AODF 4210-IR 830 nm IR 27.6 mrad 2.0 - 6.0 mm 140 - 280 MHz Tellurium Dioxide Datasheet Driver Driver AODF 4090-6 1064 nm IR 56 mrad 2 mm 72.5 - 107.5 MHz Tellurium Dioxide Datasheet Driver   AODF 4075-IR 1065 - 1100 nm IR 8.1 mrad 2.5 mm 59 - 91 MHz Tellurium Dioxide Datasheet Driver Driver

Wavelength 415-1550 nm; Type Visible, IR; Operating Frequency 40-200 MHz; Active Aperture 1.5-6 mm; Optical Material Tellurium Dioxide Transmission through an acousto-optic (AO) device causes the input light to experience a frequency shift equal to the RF drive frequency. The acousto-optic frequency shifters (AOFS) from Gooch & Housego (G&H) are optimized for the needs of applications like interferometry, with the ability to achieve high extinction ratio between modes.The product line includes standard products with frequency shifts of over 300 MHz and integrated low-power AOFS modules in which the RF driver has been built into the housing. Frequency shifters for specific application, including frequency shifts up to 600 MHz, can be customized on request. The frequency shifters are manufactured using high quality tellurium dioxide (TeO2), grown and polished in-house, for lowest insertion loss and excellent power handling. Standard AOFS products are offered for wavelengths in the visible and NIR for use with fundamental and doubled Argon Ion, Nd:YAG, He:Ne, diode, dye, and Ti:Sapphire lasers. With standard frequency shifts of over 300 MHz and custom frequency shifts up to 600 MHz, as well as models for double-pass configurations, the frequency shifters match most research and industrial needs. Frequency shifters are highly efficient acousto-optic devices, requiring very low drive power to achieve the desired frequency shift. G&H’s AOFS designs typically use the slow shear mode, resulting in slow rise time, but requiring minimal power consumption (typically < 100 mW power draw). This allows to often package the driver with the AOFS for a compact and power-efficient solution. Applications: Interferometry; Laser Cooling; Laser Doppler Velocimetry; Laser Doppler Vibrometry (LDV); Optical Heterodyne Detection Series Wavelength Type Operating Frequency Active Aperture Optical Material Downloads AOMO 3080-125 415 - 900 nm Visible 80 MHz 2 mm Tellurium Dioxide Datasheet Driver Driver AOMO 3100-125 440 - 850 nm Visible 100 MHz 1.5 mm Tellurium Dioxide Datasheet Driver Driver AOMO 3200-125 470 - 690 nm Visible 200 MHz 1.5 mm Tellurium Dioxide Datasheet Driver Driver I-FS040-1.5S2C-3-GH83 532 nm Visible 40 MHz 1.5 mm Tellurium Dioxide Datasheet Driver   I-FS040-1.5S2C-1-GH66 532 nm Visible 40 MHz 1.5 mm Tellurium Dioxide Datasheet     I-FS040-2S2E-1-GH66 630 - 690 nm Visible 40 MHz 2 mm Tellurium Dioxide Datasheet     AOFS I-FS040-2S2E-3-OL3 630 - 690 nm Visible 40 MHz 2 mm Tellurium Dioxide Datasheet Driver   I-FS080-3S2E-3-LG5 632.8 nm Visible 80 MHz 3 mm Tellurium Dioxide Datasheet Driver   AOFS 4040-191 633 - 1064 nm IR 40 MHz 2 x 6 mm Tellurium Dioxide Datasheet Driver   I-FS040-2S2J-3-GH53 1550 nm IR 40 MHz 2 x 4 mm Tellurium Dioxide Datasheet Driver  

Type IR; Wavelength 700-1100 nm; Operating Frequency 38-80 MHz; Active Aperture 2-3 mm; Window Type Brewster, AR coated; Optical Material Fused Silica; Acousto-optic mode lockers (AOML) modulate the loss within a laser cavity at its resonant frequency, effectively “locking” the phase of the longitudinal modes to generate very narrow laser pulses of high intensity. Gooch & Housego’s mode lockers for Nd:YAG, Nd:YLF, Ti:Sapphire and Argon Ion lasers can modulate at up to 200 MHz, yielding near-theoretical mode locked laser pulse widths. Antireflection (AR) coated and Brewster angle options are available. Customized one-off mode lockers can be designed for demanding scientific and OEM applications.The acousto-optic mode lockers from Gooch & Housego are manufactured using high quality fused silica, polished and fabricated in-house to ensure high quality and reliability. >99% transmission at 1064 nm is achieved by using a durable in-house antireflection V-coat. Low scatter and tight quality controls ensure that every mode locker is capable of handling high peak laser power over the long term without damage. The standard mode lockers include operating frequencies from 38 MHz to 80 MHz. The more modes are locked together in phase, the shorter the pulse. G&H’s standing wave mode lockers can obtain near theoretical mode locked laser pulse widths, with industry-leading transmission performance. The high-Q mode lockers can be used for Nd:YAG, Nd:YLF, Ti:Sapphire and Argon ion lasers at near infrared wavelengths to achieve picosecond and femtosecond length pulses at repetition rates of up to 200 MHz. The short pulses generated are often used in applications like nonlinear optics, optical data storage, femtosecond micromachining and multiphoton microscopy. High repetition rates are often desired for scientific applications, including those using optical heterodyne detection for spectroscopy, LIDAR or telecommunications. RF driver selection impacts mode locking system performance. Active temperature control of the acoustic resonator can assist in controlling resonant frequency such that resonance at the precise frequency of the driver's oscillator can be maintained. We can assist choosing the right driver for your application. Contact our sales team to identify the best RF driver for your specific application.Applications: Femtosecond Micromachining; fs/ps Lasers (Nd:YAG, Nd:YLF, Ti:Sapphire, Argon Ion); LIDAR; Multiphoton Microscopy; Nonlinear Optics; Optical Data Storage; Optical Heterodyne Detection For Spectroscopy; Telecommunications Series Type Wavelength Operating Frequency Active Aperture Window Type Optical Material Downloads 12041-3-BR-TE AOML IR 700 - 1100 nm 41 MHz 2 mm Brewster Fused Silica Datasheet 12080-3-TE AOML IR 1064 nm 80 MHz 3 mm AR coated Fused Silica Datasheet 12038-3-TE AOML IR 1064 nm 38 MHz 3 mm AR coated Fused Silica Datasheet 12041-3-TE AOML IR 1064 nm 41 MHz 3 mm AR coated Fused Silica Datasheet 12050-3-TE AOML IR 1064 nm 50 MHz 3 mm AR coated Fused Silica Datasheet 12038-3-BR-TE AOML IR 700 - 1100 nm 38 MHz 2 mm Brewster Fused Silica Datasheet 12050-3-BR-TE AOML IR 700 - 1100 nm 50 MHz 2 mm Brewster Fused Silica Datasheet 12080-3-BR-TE AOML IR 700 - 1100 nm 80 MHz 2 mm Brewster Fused Silica Datasheet

Series Wavelength Rise / Fall Time Active Aperture Operating Frequency Optical Material Type Downloads  I-M0XX-XC11B76-P5-GH105 5.5 µm 120 ns/mm up to 9.6 mm 40.68 - 60 MHz Germanium N/A Datasheet Driver I-M050-10C11V41-P3-GH75 9.4 µm 120 ns/mm up to 9.6 mm 40/60 MHz Germanium Mid-IR Datasheet Driver I-M041-XXC11XXX-P5-GH77 10.6 µm,9.4 µm 120 ns/mm up to 9.6 mm 40.68 MHz Germanium Mid-IR Datasheet Driver

Wavelength 5.5 µm-1090 nm; Rise / Fall Time 10-160 ns/mm; Active Aperture 0.1-9.6 mm; Operating Frequency 40-200 MHz; Optical Material Crystalline Quartz, Germanium, Tellurium Dioxide; Type IR, Mid-IR, Visible, UVAcousto-optic modulators (AOM) allow the intensity of light to be controlled and modulated at rates that far exceed mechanical shutters, even up to 70 MHz. The AO modulators available from Gooch & Housego (G&H) are optimized for low scatter and high laser damage threshold. Rise time, modulation rate, beam diameter and power handling requirements of the application need to be understood in order to identify the best acousto-optic modulator and RF driver solution.An acousto-optic modulator (AOM) uses sound waves within a crystal to create a diffraction grating. As the power of the applied RF signal is varied, the amount of diffracted light varies proportionally. Modulators can be used like a shutter (cycling light on and off at a set frequency), or as a variable attenuator (controlling the intensity of transmitted light dynamically).Contact our sales team to identify the best RF driver for your specific applicationApplications: Heterodyne Interferometry; Intensity Levelling; Intensity Modulation; Laser Cooling; Laser Doppler Velocimetry; Laser Doppler Vibrometry (LDV); Laser Linewidth Measurements; LIDAR; Marking; Material Processing; Micromachining; Printing; Via Drilling Series Wavelength Rise / Fall Time Active Aperture Operating Frequency Optical Material Type Downloads I-M0XX-XC11B76-P5-GH105 5.5 µm 120 ns/mm up to 9.6 mm 40.68 - 60 MHz Germanium N/A Datasheet Driver   I-M050-10C11V41-P3-GH75 9.4 µm 120 ns/mm up to 9.6 mm 40/60 MHz Germanium Mid-IR Datasheet Driver   I-M041-XXC11XXX-P5-GH77 10.6 µm, 9.4 µm 120 ns/mm up to 9.6 mm 40.68 MHz Germanium Mid-IR Datasheet Driver   AOMO 3200-1220 257 nm 10 ns 0.25 mm 200 MHz Crystalline Quartz UV Datasheet Driver   I-M110-3C10BB-3-GH27 AOM 300 - 400 nm 113 ns/mm 3 mm 110 MHz Crystalline Quartz UV Datasheet Driver   I-M110-2C10B6-3-GH26 AOM 400 - 540 nm 113 ns/mm 2 mm 110 MHz Crystalline Quartz Visible Datasheet Driver   AOMO 3080-125 415 - 900 nm 25 ns 2 mm 80 MHz Tellurium Dioxide Visible Datasheet Driver Driver AOMO 3080-120 440 - 850 nm 34 ns 1 mm 80 MHz Tellurium Dioxide Visible Datasheet Driver   AOMO 3110-120 440 - 850 nm 18 ns 0.6 mm 110 MHz Tellurium Dioxide Visible Datasheet Driver   AOMO 3100-125 440 - 850 nm 160 ns 1.5 mm 100 MHz Tellurium Dioxide Visible Datasheet Driver Driver AOMO 3110-121 442 - 488 nm 18 ns 0.6 mm 110 MHz Tellurium Dioxide Visible Datasheet Driver   AOMO 3200-120 442 - 488 nm 13 ns 0.45 mm 200 MHz Tellurium Dioxide Visible Datasheet Driver   AOMO 3200-121 442 - 488 nm 18 ns 0.32 nm 200 MHz Tellurium Dioxide Visible Datasheet Driver   AOMO 3200-125 470 - 690 nm 160 ns 1.5 mm 200 MHz Tellurium Dioxide Visible Datasheet Driver Driver AOMO 3200-124 780 - 850 nm 10 ns 0.32 mm 200 MHz Tellurium Dioxide IR Datasheet Driver   AOMO 3080-122 780 - 850 nm 25 ns 1 mm 80 MHz Tellurium Dioxide IR Datasheet Driver   AOMO 3200-1113 870 - 1250 nm 10 ns 0.1 mm 200 MHz Tellurium Dioxide IR Datasheet Driver   I-M041-2.5C10G-4-GH50 AOM 1030 - 1064 nm 113 ns/mm 2.5 mm 40.68 MHz Crystalline Quartz IR Datasheet Driver   I-M080-2C10G-4-AM3 AOM 1030 - 1064 nm 113 ns/mm 2 mm 80 MHz Crystalline Quartz IR Datasheet Driver   AOMO 3110-197 1030 - 1090 nm 18 ns 1.25 mm 110 MHz Tellurium Dioxide IR Datasheet Driver  

Type UV, Visible; Wavelength 350-850 nm; Number of Channels 4-24; Rise / Fall Time 7-23 ns; Active Aperture 0.18-0.5 mm; Operating Frequency 125-350 MHz; Acousto-optic multi-channel modulators (AOMC) allow multiple beams to be modulated or deflected independently by integrating an array of transducers with a single acousto-optic crystal. The AO multi-channel modulators manufactured by Gooch & Housego (G&H) feature reliable operation and high performance with minimized crosstalk thanks to proprietary optical and electrical designs to allow concurrent operation of up to 48 channels for modulation, and up to 8 channels for beam deflection. Multi-channel modulators are most often used for high speed applications like micromachining and direct-write lithography, as each beam can be modulated independently. They are also used to increase throughput when writing large media by writing multiple beams at the same time. A typical multi-channel modulator has parallel beams as input, each operated on by a different transducer to modulate its intensity. Available models have 2 to 48 channels for UV through NIR wavelengths, with rise times as short as 7 ns for apertures < 1 mm. Multi-channel RF drivers are available with analog or digital modulation.High laser damage threshold is achieved using low-scatter materials inspected to rigorous quality standards. We draw our own tellurium oxide (TeO2) and source high quality fused silica and crystalline quartz to ensure low insertion loss and excellent optical power handling.Applications: Marking; Material Processing; Micromachining; Printing Series Type Wavelength Number of Channels Rise / Fall Time Active Aperture Operating Frequency Optical Material Downloads AOMC 3160-8 UV 364 nm 8 21 ns 0.18 mm 160 MHz Fused Silica Datasheet AOMC 125-24 UV 350 - 365 nm 24 23 ns 0.5 mm 125 MHz Crystalline Quartz Datasheet AOMC 220-5 UV 413 nm 5 16 ns 0.24 mm 220 MHz Crystalline Quartz Datasheet AOMC 220-4 UV 350 - 365 nm 4 16 ns 0.24 mm 190 - 250 MHz Crystalline Quartz Datasheet AOMC 300-5 UV 413 nm 5 10 ns 0.2 mm 300 MHz Crystalline Quartz Datasheet AOMC 3350-6 Visible 350 - 850 nm 6 7 ns 0.33 mm 350 MHz Tellurium Dioxide Datasheet

Wavelength 1030-2100 nm; Active Aperture 1-8 mm; Operating Frequency 24-80 MHz; Optical Material Crystalline Quartz, Fused Silica; Type Water Cooled, Conduction CooledAn acousto-optic Q-switch (AOQS) works within a laser cavity to generate high intensity, pulsed light by actively controlling the Q-factor (loss) of the cavity. The acousto-optic Q-switches available from Gooch & Housego (G&H) are rugged, reliable and long-lasting. The product offering includes low insertion loss and highly efficient acousto-optic Q-switches capable of handling very high peak power. Particular attention is used to match the cavity length, repetition rate, wavelength, beam diameter, polarization state and output power of a laser to the best acousto-optic Q-switch solution.G&H offers off-the-shelf solutions for polarized or unpolarized lasers at near infrared wavelengths. G&H can accommodate large lamp pumped multimode laser beam diameters (up to 8 mm) as well as small compact diode pumped beam diameters (< 1 mm) with both water and conduction cooling. Specialized designs meet unique needs such as ultra-high single pass loss (up to 96%), high switching speeds and premium pulse-to-pulse stability.A full line of RF drivers designed specifically for Q-switching is available, with rapid fall times, tight synchronization, operation in either fixed or variable mode and advanced capabilities like first pulse suppression or multichannel operation to drive multiple Q-switches within the same cavity.Applications: Laser Marking; Lithography; Material Processing; Medical Surgery; Micromachining Series Wavelength Active Aperture Operating Frequency Optical Material Type Downloads I-QS080-1C10G-8-GH28 Q-Switch 1030 - 1064 nm 1 mm 80 MHz Crystalline Quartz Conduction-Cooled Datasheet Driver Super Q-Switch 1064 nm 1.6, 2, 3, 4, 5, 6.5 mm 24, 27.12 MHz Crystalline Quartz Water Cooled Datasheet Driver Industry Standard AO Q-Switch 1064 nm 1.6, 2, 3, 4, 5, 6.5, 8 mm 24, 27.12, 40.68, 68 MHz Fused Silica Water Cooled Datasheet Driver Stallion Q-Switch 1064 nm 1.6, 2, 3, 4, 5, 6.5, 8 mm 24, 27.12, 40.68, 68 MHz Fused Silica Water Cooled Datasheet Driver VHE AO Q-Switch 1064 nm 1.6, 2.5, 2, 3, 4 mm 68 MHz Crystalline Quartz Water Cooled Datasheet   I-QS041-1.8C10G-4-GH21 AO Q-Switch 1064 nm 1.8 mm 40.68 MHz Crystalline Quartz Conduction-Cooled Datasheet Driver I-QS080-1C10G-4-GH25 Q-Switch 1064 nm 1 mm 80 MHz Crystalline Quartz Conduction-Cooled Datasheet Driver I-QS080-0.5C10G-8-GH48 Q-Switch 1064 nm 0.5 mm 80 MHz Crystalline Quartz Conduction-Cooled Datasheet Driver I-QS080-1C10H-4-OS14 1319 - 1342 nm 1 mm 80 MHz Crystalline Quartz Conduction-Cooled Datasheet Driver I-QS027-4S4V2-x5-ST1 Q-Switch 1550 nm 4 mm 27.12 MHz Fused Silica Water Cooled Datasheet   I-QS041-2C10V5-4-HC1 Q-Switch 1900 - 2100 nm 2 mm 40.68 MHz Crystalline Quartz Conduction-Cooled Datasheet Driver I-QS041-5C10V5-x5-ST3 Q-Switch 2100 nm 5 mm 40.68 MHz Crystalline Quartz Water Cooled Datasheet Driver    

Wavelength 351-4500 nm; Active Aperture 2-12 mm; Bandwidth 0.3-12 nm; Acousto-optic tunable filters (AOTF) are used to rapidly and dynamically select a specific wavelength from a broadband or multi-line laser source. As the applied RF frequency is varied, the transmitted wavelength changes, “tuning” the wavelength of the beam or image in tens of microseconds or less. An extensive line of AO tunable filters is available for wavelength from the UV through mid-IR, with resolution bandwidths of less than 1nm, with options such as large-aperture imaging filtering and sideband suppression. Fiber-coupled acousto-optic tunable filters devices are available upon request.AOTFs with apertures less than 6 mm are typically used that have less than tens of nm of resolution bandwidth at NIR wavelengths and less than ten nm at visible wavelengths. A quasi-collinear AOTF can deliver < 1 nm resolution bandwidth if operated with highly collimated light. AOTFs with larger apertures (> 6 mm) are a powerful tool for spectral imaging, rapidly and efficiently scanning an entire image in wavelength. This is of use in high-speed applications like hyperspectral imaging, confocal microscopy and on-line process control. The cost of AOTFs increases significantly for very large apertures, but they deliver unmatched speed for time-sensitive multispectral measurements in industry and biotech, approaching real-time video rate spectral imaging.  Gooch & Housego’s acousto-optic tunable filters are manufactured using high quality TeO2 crystals grown in-house, polished and fabricated to rigorous standards, with wavelengths from 350 nm to 4.4 µm in a wide variety of apertures and resolution bandwidths. It is possible to filter images up to 25 mm across, meet exceptionally low driver power requirements or design an AOTF to select and transmit multiple discrete wavelengths.Acousto-optic tunable filters often exhibit light leakage outside the resolution bandwidth of interest, typically at 10-20 dB below peak power. This is due to the response function of the AOTF itself but can be minimized using G&H’s patented techniques. Sideband suppression is available in several models, reducing out of band side lobes by greater than 20 dB relative to the primary beam. The AOTF product family includes application-specific solutions for illumination or excitation wavelength selection, as well as multispectral or hyperspectral imaging. For best performance, we recommend a matched RF driver, including the latest digital frequency synthesizer (DFS) driver technology and random access wavelength control. Applications: Confocal Microscopy; Fluorescence Imaging; Hyperspectral Imaging; Imaging Spectroscopy; Laser Wavelength Tuning; On-Line Process Control; Spectroscopy; Wavelength Selection Series Wavelength Active Aperture Bandwidth Downloads AOTF 2837-31 351 - 430 nm 2.5 mm 1.0 nm Datasheet      TF525-250-6-3-GH19A 400 - 650 nm 3 mm 3 nm Datasheet      AOTF 3151-01 400 - 650 nm 2.5 mm 2.5 nm Datasheet      TF550-300-4-6-GH57A AOTF 400 - 700 nm 6 mm 4 nm Datasheet      TF560-280-1-5-NT2 AOTF 420 - 700 nm 5 mm 0.3 nm Datasheet      AOTF 2838-01 450 - 670 nm 2.5 mm 1.3 nm Datasheet      AOTF 2885-02 450 - 670 nm 2.5 mm 2 nm Datasheet      AOTF 2885-04 450 - 670 nm 2.5 mm 4 nm Datasheet      TF625-350-2-11-BR1A AOTF 450 - 800 nm 11 x 12 mm 1.5 nm Datasheet      TF850-500-10-6-GH58A AOTF 600 - 1100 nm 6 mm 10 nm Datasheet      AOTF 2986-01 640 - 1100 nm 2.5 mm 5 nm Datasheet      TF950-500-1-2-GH96 700 - 1200 nm 2 mm 0.6 nm       AOTF 2996-01 1100 - 2000 nm 2.5 mm 12 nm Datasheet  Driver Driver I-TF1650-1100-1-3-GH107 1100 - 2200 nm 3 mm 1.0 nm       TF1875-1250-10-6-GH59A 1250 - 2500 nm 6 mm 10 nm Datasheet      I-TF2250-1500-2-3-GH107 1500 - 3000 nm 3 mm 2 nm       I-TF3250-2500-3-3-GH107 2000 - 4500 nm 3 mm 3 nm      

Fixed; Fiber Type SMF-28; 1425-1605 nm; Fiber Length 0.5, 1 m; Connector Type FC/PC, FC/APC, SC/APC, FC/UPC, SC/UPC, LC, None; Attenuation 1-20 dB, Other; Dimensions Ø3.0x55/65, Ø5.0x80, 80x10x8 mm Gooch & Housego’s AFF-X series of fixed attenuators are compact fused fiber components that reduce optical power by a specified amount. Gooch & Housego (G&H) utilizes a proprietary manufacturing technology that provides accurate attenuation with low wavelength, temperature and polarization dependence. Designed for use where optical power levels need to be managed, G&H’s AFF-xxx0 xBxxx components have standard attenuation values ranging from 1 to 20 dB. Standard wavelength windows are the C, L, C+L or S bands. Attenuators may also be optimized for custom attenuation levels, tolerances and wavelengths – contact AMS Technologies to discuss your customized attenuator solution. Key Features: Fixed Attenuation: 1 to 20 dB, Other Values on Request High Performance Low Back Reflection – Return Loss (RL): 55 dB Proven Reliability C, L, C+L or S Band, 1425 to 1605 nm Wavelength Dependent Loss (WDL): ≤0.10 to ≤1.20 dB Polarization Dependent Loss (PDL): ≤0.09 to ≤0.80 dB Fiber Type: Corning SMF-28 Pigtail Length: 0.5, 1 m Connector Type: FC/PC, FC/APC, SC/APC, FC/UPC, SC/UPC, LC, None Custom Parts Available Compliance: Telcordia GR-1221 Dimensions: Ø3.0 x 55/65, Ø5.0 x 80, 80 x 10 x 8 mm Applications: Power Management in Optical Networks; Receiver Protection; WDM System Channel Balancing; Test Equipment; Fiber Lasers; Sensors

Fused; Fiber Type SM; 450-1599 nm; Number of Legs 1x2, 2x2; Splitting Ratio 1/99,999-50/50, Other; Fiber Length 0.5, 1 m; RL ≥50 dB; Dimensions Ø3.0x50/60, Ø5.0x75, 80x10x8, 5x5x85 mm Gooch & Housego’s FFS-X series of single mode (SM) fiber couplers split or combine light in the visible or (near) infrared regions. The couplers utilize Gooch & Housego’s (G&H) low-loss fused fiber technology. No light leaves the fiber, therefore no alignment is required and there are no unwanted reflections. Furthermore, the output fiber pigtails may be directly integrated into beam delivery systems. Visible Wavelength SM Fiber Couplers:Within the FFS-xxxxxxxxx series of visible wavelength fiber couplers, versions optimized for any wavelength within the range of 450 to 700 nm may be selected. These couplers are designed for applications in display systems, sensors and biomedical equipment. Near Infrared SM Fiber Couplers:G&H’s FFS-xxxxxxxxx series of near infrared couplers splits light at any selected wavelength from 700 to 1199 nm. These couplers are designed for applications in fiber laser, sensor and avionics applications. Ultra-low Ratio Tap SM Fiber Couplers:G&H’s FFS-xxxxxxAxx series of ultra-low ratio tap couplers splits a very small amount of light from a signal path to a tap port. Suitable for very high optical power, its main application is in the monitoring of optical sources such as fiber lasers. Low tap ratios such as 0.1%, 0.01% or 0.001% enable the monitoring photodetector to operate without damage or saturation. Gooch & Housego proprietary manufacturing technology provides ultra-low loss in the signal path, thereby maximizing optical power handling. Consistently high return loss (>55 dB) reduces the amount of optical power reflected back along the input fiber. This helps the fiber laser operate in a stable manner. Standard ultra-low ratio parts are available for wavelengths from 700 to 1599 nm. For other wavelengths, coupling ratios or customized fiber types please contact AMS Technologies. Key Features: Available at Wide Variety of Operating Wavelengths: 450 to 1599 nm Coupling Ratio: 1% to 50%, Plus 0.1%, 0.01% and 0.001% Ultra-low Coupling Ratio Versions All Fiber – No Lens Alignment Required No Unwanted Reflections High Return Loss (RL): ≥50 dB (Ultra-Low Coupling Ratio Versions) High Optical Power Handling: 4 W Fiber Type: Specialty Single Mode (SM) Fiber Number of Legs: 1x2, 2x2 Pigtail Length: 0.5, 1 m Custom Designs Available Connector Type: FC/PC, FC/APC, SC/APC, FC/UPC, SC/UPC, LC, None Dimensions: Ø3.0 x 50/60, Ø5.0 x 75, 80 x 10 x 8, 5 x 5 x 85 mm Applications: Visible and Display Systems; Fiber Lasers; Sensors; Raman Amplifiers; High-power EDFAs; Avionics; Biomedical Equipment; Research

Fused; Fiber Type SM, SMF28, HI 1060 Flex, BFO5635-02, SM1950/SM2000, Other; 450-1599 nm, 955-2199 nm; Number of Legs 1x2, 2x2, 1x3, 3x3, 1x4, 4x4; Splitting Ratio 1/99-50/50, Other; Fiber Length 0.5, 1 m; IL 0.5-23 dB; RL ≥50 dB; Dimensions Ø3.0x32/45/50/60, Ø5.0x75, 80x10x8, 5x5x85 mm Gooch & Housego’s FFS-X series of single mode (SM) fiber couplers split or combine light in the visible or (near) infrared regions. The couplers utilize Gooch & Housego’s (G&H) low-loss fused fiber technology. No light leaves the fiber, therefore no alignment is required and there are no unwanted reflections. Furthermore, the output fiber pigtails may be directly integrated into beam delivery systems. Visible Wavelength SM Fiber Couplers:Within the FFS-xxxxxxxxx series of visible wavelength fiber couplers, versions optimized for any wavelength within the range of 450 to 700 nm may be selected. These couplers are designed for applications in display systems, sensors and biomedical equipment. Near Infrared SM Fiber Couplers:G&H’s FFS-xxxxxxxxx series of near infrared couplers splits light at any selected wavelength from 700 to 1199 nm. These couplers are designed for applications in fiber laser, sensor and avionics applications. Ultra-low Ratio Tap SM Fiber Couplers:G&H’s FFS-xxxxxxAxx series of ultra-low ratio tap couplers splits a very small amount of light from a signal path to a tap port. Suitable for very high optical power, its main application is in the monitoring of optical sources such as fiber lasers. Low tap ratios such as 0.1%, 0.01% or 0.001% enable the monitoring photodetector to operate without damage or saturation. Gooch & Housego proprietary manufacturing technology provides ultra-low loss in the signal path, thereby maximizing optical power handling. Consistently high return loss (>55 dB) reduces the amount of optical power reflected back along the input fiber. This helps the fiber laser operate in a stable manner. Standard ultra-low ratio parts are available for wavelengths from 700 to 1599 nm. For other wavelengths, coupling ratios or customized fiber types please contact AMS Technologies. Gooch & Housego’s FFC-X series of fused single mode (SM) fiber couplers are grouped into six different sub-categories: C, L, C+L or S Band (FFC-xxxxxBxxx):The FFC-xxxxxBxxx fused couplers for C , L, C+L or S band enable the accurate splitting and monitoring of optical signals in single mode (SM) fiber. Gooch & Housego (G&H) proprietary manufacturing technology provides uniquely low excess loss and wavelength dependence, along with low polarization and temperature dependence for both signal and tap ports. Sub-miniature (FFC-xx1xABxx0):G&H’s FFC-xx1xABxx0 sub-miniature tap couplers provide low-loss splitting and monitoring in an ultra-short 32 mm length package. Designed for space constrained applications, the product is manufactured using Ø 80 μm cladding fiber. This enables low fiber bend radius within modules, without compromising mechanical integrity. Dual Window (FFC-xxxxxBxxx):Gooch & Housego’s FFC-xxxxxBxxx dual window couplers provide new levels of performance and reliability for two-window couplers. The couplers enable coupling and splitting simultaneously over the 1310 nm and 1550 nm windows. 980 nm (FFC-xxxxxNxxx):Gooch & Housego’s FFC-xxxxxNxxx fused couplers for 980 nm enable the accurate splitting and monitoring of pump power in erbium-doped fiber amplifiers. G&H proprietary manufacturing technology provides uniquely low excess loss, along with low polarization and temperature dependence for all ports. NXN Single Fuse (FFC-xxxxxNxxx):Gooch & Housego’s FFC-xxxxxNxxx single fuse couplers provide optical splitting and combining for more than two ports. A single low-loss fusion takes place to produce 1x3, 3x3, 1x4 and 4x4 couplers in a single cylindrical package. 2 µm Operation (FFC-xxxxxxxxx):G&H’s FFC-xxxxxxxxx fused couplers for 2 µm operation enable the accurate splitting and monitoring of optical signals in single mode (SM) fiber. G&H proprietary manufacturing technology provides uniquely low excess loss and wavelength dependence, along with low polarization and temperature dependence for both signal and tap ports. The all-fiber construction offers excellent reliability and high power handling characteristics. These high-performance parts are available in a wide variety of tap ratios, wavelengths, housings and connector options. Components can be readily specified in a wide variety of applications, enabling rapid design cycles and new project builds. Please contact AMS Technologies for a specification tailored to your requirements. Key Features: Available at Wide Variety of Operating Wavelengths: 450 to 1599 nm (FFS-X), 955 to 2199 nm (FFC-X Coupling Ratio: 1% to 50%, Plus 0.1%, 0.01% and 0.001% Ultra-low Coupling Ratio Versions ,Other Ratios on Request All Fiber – No Lens Alignment Required No Unwanted Reflections Low or Ultra-low Loss Insertion Loss (IL) Signal Path: 0.15 to 3.6 dB Insertion Loss (IL) Tap Path: 2.5 to 23 dB Low Wavelength Dependence Wavelength Dependent Loss (WDL) Signal Path: 0.03 to 0.40 dB Wavelength Dependent Loss (WDL) Tap Path: 0.10 to 1.2 dB Maximum Polarization Dependent Loss (PDL): 0.03 to 0.35 dB High Return Loss (RL): ≥50 dB (Ultra-Low Coupling Ratio Versions) High Optical Power Handling: 4 W Fiber Type: Specialty Single Mode (SM) Fiber, Corning SMF28, Corning HI 1060 Flex, Lucent BFO5635-02, 980 nm Fiber, SM1950/SM2000, 10/125 0.15NA Ø80 μm Cladding Fiber Capability (Sub-miniature & NXN Single Fuse Versions) Number of Legs: 1x2, 2x2 (1x3, 3x3, 1x4, 4x4 for NXN Single Fuse Versions) High Performance Proven Reliability Pigtail Length: 0.5, 1 m Custom Designs Available Connector Type: FC/PC, FC/APC, SC/APC, FC/UPC, SC/UPC, LC, None Compliance: Telcordia GR-1221 (C, L, C+L or S Band, Sub-miniature, 980 nm Versions) 32 mm Package Length (Sub-miniature Versions) Dimensions: Ø3.0 x 32/45/50/60, Ø5.0 x 75, 80 x 10 x 8, 5 x 5 x 85 mm Applications: Visible and Display Systems; High-power EDFAs; EDFA Pump Redundancy and Sharing; EDFA Pump Monitoring; Signal Monitoring in C+L Band EDFA or Raman Amplifier; Avionics; Research; Passive Optical Networks; Optical Network Monitoring; Optical Network Expansion; Fixed Attenuation; Miniature Optical Amplifiers & Modules (Sub-miniature Versions); Fiber Gyros; Fiber Lasers; Sensors; CATV; Undersea Systems; Research; Telecoms; Instrumentation; IR Imaging; Biomedical; Industrial; Defence; IR Counter Measures

Gooch & Housego’s FFW-X single mode (SM) fused pump signal wavelength division multiplexers (WDMs) are used for multiplexing signal and pump power in erbium-doped power amplifiers, pumped by wavelengths from 960 to 1480 nm. Gooch & Housego (G&H) proprietary manufacturing technology provides uniquely low excess loss, along with low polarization and temperature dependence for all ports. The ultra-low loss of these components promotes high efficiency of use of pump power and low noise figure. These high-performance parts are available in many wavelength configurations, fiber and connector options, with standard as well as subminiature packages. They can therefore be readily specified in a wide variety of applications, enabling rapid design cycles and new project builds. Fused Pump Signal WDMs 980 nm (FFW-xxxxx2xxx):G&H’s FFW-xxxxx2xxx series of fused pump signal WDMs, 980 nm, multiplex signal and pump power in 980, 960 or 1060 nm-pumped erbium-doped fiber amplifiers. Wavelength configurations allow for 960, 980 or 1060 nm pumping and C, L or C+L signal bands. Reliability is assured through qualification to Telcordia GR-1221, with a field proven FIT rate of <1. Fused Pump Signal WDMs 1480 nm (FFW-3xxxx21xx):The Gooch & Housego FFW-3xxxx21xx series of fused pump signal WDMs, 1480 nm, multiplex signal and pump power in 1480 nm-pumped erbium-doped fiber amplifiers. Wavelength configurations are 1480 nm – C band and 1480 nm – L band. Subminiature Pump Signal WDMs (FFW-5x1xx2xx0):G&H’s FFW-5x1xx2xx0 series of subminiature pump signal WDMs provide low-loss multiplexing of pump and signal in an ultra-short 32 mm length package. Designed for space-constrained optical amplifiers, the product is manufactured using ø80 µm cladding fiber. This enables low fiber bend radius without compromising mechanical integrity. Standard wavelengths of operation are based on 980 nm pumping and C, L or C+L signal bands. However, many other wavelength combinations are available for diverse requirements such as sensing, fiber lasers and fiber Gyros. Do not hesitate to contact AMS Technologies with your specific requirements. Reliability is assured through qualification to Telcordia GR-1221. Key Features: Promotes Low Amplifier Noise Figure Promotes Low Pump Power Wastage Ultra-low Excess Loss: <0.05 dB Typical C, L or C+L Signal Bands Wide Range of Regular Parts Available Miniature Versions (32 mm Package Length) Available High Power Handling Telcordia GR-1221 Compliance (980 nm, Subminiature) Proven Reliability Applications: C, L or C+L Band EDFAs; C or L Band Pump/Signal Multiplexing; 960, 980, 1060 or 1480 nm Pump Rejection; Fiber Lasers; Fiber Gyros; Sensors

Gooch & Housego’s FFW-X wavelength division multiplexers (WDMs) are single mode (SM) optical fiber components and modules. They enable two or three wavelengths to be combined or separated. For the FFW-X series, Gooch &Housego (G&H) utilizes low-loss fused fiber technology – no light leaves the fiber and therefore no alignment is required and there are no unwanted reflections. Furthermore, the output fiber pigtails may be directly integrated into beam delivery systems. These high-performance parts are available in many wavelength configurations (including a duplexing version), fiber and connector options, with standard as well as subminiature packages. They can therefore be readily specified in a wide variety of applications, enabling rapid design cycles and new project builds. Visible Wavelength Combiners:Designed for applications in display systems, sensors and biomedical equipment, G&H’s FFW-xxxxxxxxx single mode visible wavelength fused fiber combiners enable any two or three primary colors in the visible wavelength region to be combined or separated. Visible wavelength combiners are available for either two (red/green, blue/green, red/blue light) or three wavelengths, providing full RGB operation and enabling full color displays. All variants are available on a custom basis, so please contact AMS Technologies to discuss your specific requirements. Near Infrared WDMs:Designed for applications in fiber laser, sensing, biomedical, military and avionics, the FFW-xxxxxxxxx near infrared WDMs enable the low-loss combining or splitting of a pair of wavelengths within the 700 nm to 1199 nm region. G&H can rapidly produce such custom WDMs, with typical minimum wavelength separation of 50 nm. Specific applications could include combining two sensor wavelengths onto one fiber, splitting laser harmonics, or combining wavelengths in fiber lasers. WDMs for 2 µm Operation:Gooch & Housego’s FFW-xxxxxxxxx fused WDMs for 2 µm operation combine multiple wavelengths of light in single mode (SM) fiber whilst maintaining low loss. G&H proprietary manufacturing technology provides low loss with low polarization dependence (PDL). The all-fiber construction offers excellent reliability and high power handling characteristics. These high-performance parts are available in many wavelength configurations, housing, fiber and connector options and can therefore be readily specified in a wide variety of applications, enabling rapid design cycles and new project builds. Duplexing WDMs 1310/1550 nm & 1625 nm (FFW-4xxxx11xx):G&H’s FFW-4xxxx11xx series of duplexing WDMs enable the low-loss combining or splitting of a pair of wavelengths. 1310 nm/C band or 1310 nm/L band components are used to double network bandwidth whilst the 1310/1625 nm component is used to add or drop a supervisory wavelength from a system. G&H proprietary manufacturing technology provides uniquely low excess loss and wavelength dependence along with low polarization and temperature dependence for all ports. In addition to the standard wavelengths, other combinations such as 1550/1625 nm are available. Please contact AMS Technologies with your specific requirements. FFW-X SM Pump Signal WDMsGooch & Housego’s FFW-X single mode (SM) fused pump signal wavelength division multiplexers (WDMs) are used for multiplexing signal and pump power in erbium-doped power amplifiers, pumped by wavelengths from 960 to 1480 nm. Proprietary manufacturing technology provides uniquely low excess loss, along with low polarization and temperature dependence for all ports. The ultra-low loss of these components promotes high efficiency of use of pump power and low noise figure. Fused Pump Signal WDMs 980 nm (FFW-xxxxx2xxx):G&H’s FFW-xxxxx2xxx series of fused pump signal WDMs, 980 nm, multiplex signal and pump power in 980, 960 or 1060 nm-pumped erbium-doped fiber amplifiers. Wavelength configurations allow for 960, 980 or 1060 nm pumping and C, L or C+L signal bands. Reliability is assured through qualification to Telcordia GR-1221, with a field proven FIT rate of <1. Fused Pump Signal WDMs 1480 nm (FFW-3xxxx21xx):The Gooch & Housego FFW-3xxxx21xx series of fused pump signal WDMs, 1480 nm, multiplex signal and pump power in 1480 nm-pumped erbium-doped fiber amplifiers. Wavelength configurations are 1480 nm – C band and 1480 nm – L band. Subminiature Pump Signal WDMs (FFW-5x1xx2xx0):G&H’s FFW-5x1xx2xx0 series of subminiature pump signal WDMs provide low-loss multiplexing of pump and signal in an ultra-short 32 mm length package. Designed for space-constrained optical amplifiers, the product is manufactured using ø80 µm cladding fiber. This enables low fiber bend radius without compromising mechanical integrity. Key Features: Combining or Separating Two or Three Wavelengths Wide Range of Regular Parts Available Custom Wavelength Capability All Fiber – No Lens Alignment Low or Ultra-low Light Loss No Unwanted Reflections High Power Handling Custom Designs Available Key Features FFW-X SM Pump Signal WDMs: Promotes Low Amplifier Noise Figure Promotes Low Pump Power Wastage Ultra-low Excess Loss: <0.05 dB Typical C, L or C+L Signal Bands Wide Range of Regular Parts Available Miniature Versions (32 mm Package Length) Available High Power Handling Telcordia GR-1221 Compliance (980 nm, Subminiature) Proven Reliability Applications: Fiber Lasers; Sensors, Biomedical Equipment; Research; Visible and Display Systems; Avionics; Defense; Telecoms; Optical Networking; Instrumentation; IR Imaging; Industrial, IR Counter Measures; C, L or C+L Band EDFAs; C or L Band Pump/Signal Multiplexing; 960, 980, 1060 or 1480 nm Pump Rejection; Fiber Gyros; Sensors

Fiber Type SM, PM; 450-2000 nm; Bandwidth ±15-±40 nm; IL ≤0.3-≤2.5 dB; RL ≥50 dB; Fiber Length 5, 20 mm, Other; Dimension Ø1.3/2.78/2.85x8, Ø3.2x10, Ø2.4x12 mm Fiber optic collimators are components designed to collimate/focus light exiting a fiber to a desired optical beam. Gooch & Housego (G&H) fiber optic collimators offer low optical loss and high reliability across a wide range of wavelengths. G&H low -and high-power fiber optic collimators are available in single fiber and dual fibers, ideal for use in fiber sensors and fiber lasers. Operating center wavelengths start at 450 nm and go on to 520, 630, 780, 850, 980, 1064, 1310, 1550 and 2000 nm. Power handling options from 0.1 to 10 W or customer requested. Four different versions of G&H fiber collimators are available: Low-power single mode (SM) collimators (SCOL-xx-xx-xx-xx-x1-xx-x series) High-power single mode (SM) collimators (HSCO-xx-xx-xx-xx-31-xx-0 series) Low-power polarization maintaining (PM) collimators (PCOL-xx-xxxx-xx-xx-xxx series) High-power polarization maintaining (PM) collimators (HPCO-xx-xx-xx-xx-31-xx0 series) Key Features: Low Insertion Loss (IL, at WD): ≤0.3 to ≤2.5 dB High Reliability Center Wavelength: 450 to 2000 nm Operating Bandwidth ±15 to ±40 nm Return Loss (RL): ≥50 dB Polarization Dependent Loss (PDL, SM Versions): ≤0.15 dB Extinction Ratio (PM Versions): ≥18 to ≥23 dB Working Distance: 5, 20 mm or Customer Request Optical Power Handling: ≤0.1 to 10 W Fiber Type Single Mode (SM) Versions: 460-HP, 630HP, HI-780C, HI1060, SMF-28, SM-1950 Fiber Type Polarization Maintaining (PM) Versions: PM460-HP, PM630-HP, PM780C-A, SM98-PS-U25, SM13-PS-U25, SM15-PS-U25 Lead Length: 1, 1.5 m, etc. Glass, Gilded or Metal Tube Dimensions: Ø1.3/2.78/2.85 x 8, Ø3.2 x 10, Ø2.4 x 12 mm Applications: Fiber Sensors; Fiber Lasers

Wavelength 450-200 nm; Pigtail Type SM, PM; Rise / Fall Time 6-100 ns; Operating Frequency 40-300 MHz; Fiber-coupled acousto-optic modulators (FCAOM) offer a robust solution for amplitude modulation of fiber lasers, allowing direct control of the timing, intensity, and temporal shape of the laser output. Gooch & Housego’s (G&H) Fiber-Q® modulators offer high extinction ratio, low insertion loss and excellent stability in both polarization maintaining (PM) and non-PM formats at modulation frequencies up to 80 MHz for visible and infrared wavelengths. Built for reliability, the Fiber-Q® series of products features a rugged hermetic design in a compact, low-profile package, ideal for ease of integration into all-fiber and OEM systems, including medical laser systems.Each Fiber-Q® acousto-optic modulator requires an RF driver to generate the RF signal creating the acoustic wave within the embedded AO crystal. Modulation of the beam through the Fiber-Q will depend upon the frequency and intensity of the applied RF signal. Contact our sales team to identify the best RF driver for your specific application, taking into consideration the type of modulation required (digital or analog) as well as any specific pulse shaping needs.A fiber-coupled acousto-optic modulator (FCAOM) can directly control the temporal characteristics of the active output from a fiber laser, offering a wider variety of pulse shapes. As a byproduct of the acousto-optic effect, light passing through the first order diffraction mode of a fiber-coupled modulator also experiences a frequency shift and beam deflection. This allows the Fiber-Q® products to be used for more than just modulation, resulting in applications outside the laser such as optical heterodyne interferometry. G&H’s fiber optic acousto-optic modulators are designed for low insertion loss, high extinction ratio and excellent return loss. Typical optical performance for the Fiber-Q® series includes: Insertion loss: as low as 2 dB, depending on model Extinction ratio: 50 dB Return loss: 40 dB Polarization extinction ratio: 20 dB (for polarization-maintaining models) G&H has developed the first devices for visible wavelengths from 397 nm to 780 nm to meet the needs of sensing and quantum technology applications. The fast switch rate Fiber-Q® devices enable efficient, high speed optical pulse picking at infrared wavelengths for all-fiber laser systems. Most devices are also offered in 3-port configurations.Applications: Industrial Lasers; Sensing; Scientific Research; Telecommunication; Quantum Technology; Optical Heterodyne Interferometry; Microscopy; Flow Cytometry Series Product Code Wavelength Pigtail Type Rise / Fall Time Operating Frequency Downloads Fiber-Q 1060 nm 150 MHz Non-Hermetic Fiber-Coupled AOM S-M150-0.4C2G-3-F2S 1060 nm SM 30 ns 150 MHz Datasheet Datasheet Datasheet Driver Fiber-Q 1060 nm 200 MHz Non-Hermetic Fiber-Coupled AOM S-M200-0.1C2G-3-F2P 1060 nm SM 10 ns 200 MHz Datasheet  Driver   Driver  Driver Fiber-Q 450 nm 200 MHz S-M200-0.4C2A-3-F2P, S-M200-0.4C2A-3-F2S 450 nm PM, SM 25 ns 200 MHz Datasheet  Driver   Driver  Driver  Fiber-Q 532 nm 200 MHz S-M200-0.4C2C-3-F2P, S-M200-0.4C2C-3-F2S 532 nm PM, SM 25 ns 200 MHz Datasheet  Driver  Driver     Fiber-Q 633 nm 200 MHz Fiber Coupled AOM S-M200-0.4C2E-3-F2P, S-M200-0.4C2E-3-F2S 633 nm PM, SM 25 ns 200 MHz Datasheet  Driver   Driver    Fiber-Q PM 1550 nm, 40 MHz (AMTIR) T-M040-0.5C8J-3-F2P 1550 nm PM 100 ns 40 MHz Datasheet  Driver  Driver  Driver  Fiber-Q 1550 nm 40 MHz (AMTIR) T-M040-0.5C8J-3-F2S 1550 nm SM 100 ns 40 MHz Datasheet Datasheet Datasheet Driver  Fiber-Q PM 2000 nm 80 MHz Hermetic Fiber Coupled AOM T-M080-0.3C2Z-3-F2P 2000 nm PM 100 ns 80 MHz Datasheet  Driver      Fiber-Q 2000 nm 80 MHz Hermetic Fiber Coupled AOM T-M080-0.3C2Z-3-F2S 2000 nm SM 100 ns 80 MHz Datasheet  Driver     Fiber-Q PM 1550nm 80MHz Hermetic Fiber-Coupled AOM T-M080-0.4C2J-3-F2P 1550 nm PM 35 ns 80 MHz Datasheet  Driver     Fiber-Q 1550 nm 80 MHz Hermetic Fiber Coupled AOM T-M080-0.4C2J-3-F2S 1550 nm SM 35 ns 80 MHz Datasheet  Driver     PM Fiber-Q Polarization Maintaining 1550 nm Hermetic Fiber Coupled Acousto-Optic Modulator, 80 MHz (Low Power Consumption) T-M080-0.5C8J-3-F2P 1550 nm PM 100 ns 80 MHz Datasheet  Driver      Fiber-Q 1550 nm Hermetic Fiber Coupled Acousto-Optic Modulator, 80 MHz (Low Power Consumption) T-M080-0.5C8J-3-F2S 1550 nm PM 100 ns 80 MHz Datasheet  Driver      Fiber-Q PM 1550 nm 110 MHz Hermetic Fiber Coupled AOM T-M110-0.2C2J-3-F2P 1550 nm PM 25 ns 110 MHz Datasheet Driver       Fiber-Q 1550 nm 110 MHz Hermetic Fiber Coupled AOM T-M110-0.2C2J-3-F2S 1550 nm SM 25 ns 110 MHz Datasheet  Driver      Fiber-Q PM 1060 nm 150 MHz Hermetic Fiber Coupled AOM T-M150-0.4C2G-3-F2P 1060 nm PM 30 ns 150 MHz Datasheet  Driver     Fiber-Q 1060 nm 150 MHz Hermetic Fiber-Coupled AOM T-M150-0.4C2G-3-F2S 1060 nm SM 30 ns 150 MHz Datasheet  Driver     Fiber-Q, 780 nm, 150 MHz Fiber Coupled AOM T-M150-0.5C2W-3-F2P, T-M150-0.5C2W-3-F2S 780 nm PM, SM 50 ns 150 MHz Datasheet  Driver     Fiber-Q PM 1060 nm 200 MHz Hermetic Fiber Coupled AOM T-M200-0.1C2G-3-F2P 1030 - 1090 nm PM 10 ns 200 MHz Datasheet  Driver Driver     Fiber-Q 1060 nm 200 MHz Fiber Coupled AOM T-M200-0.1C2G-3-F2S 1060 nm SM 10 ns 200 MHz Datasheet  Driver  Driver  Driver  Fiber-Q PM 1550 nm 200 MHz Hermetic Fiber-Coupled AOM T-M200-0.1C2J-3-F2P 1550 nm PM 10 ns 200 MHz Datasheet  Driver Driver     Fiber-Q 1550 nm 200 MHz Hermetic Fiber-Coupled AOM T-M200-0.1C2J-3-F2S 1550 nm SM 10 ns 200 MHz Datasheet  Driver Driver     Fiber-Q 2000 nm (2µm) 250 MHz Fiber Coupled AOM T-M250-0.3C16Z-3-F2P 2000 nm PM 20 ns 250 MHz Datasheet  Driver      Fiber-Q 1060 nm 300 MHz Hermetic Fiber Coupled AOM T-M300-0.1C2G-3-F2P, T-M300-0.1C2G-3-F2S 1060 nm PM, SM 6 ns 300 MHz Datasheet  Driver      Fiber-Q 1550 nm Fiber Coupled Acousto-Optic Modulator T-M300-0.1C16J-3-F2P 1550 nm PM 6 ns 300 MHz Datasheet Driver      

Fused; Fiber Type PM Bow Tie; 900-1199 nm; Number of Legs 1x2, 2x2; Splitting Ratio 1/99-50/50; Fiber Length 0.5, 1 m; Excess Loss 0.3 dB; RL 50 dB; Dimensions Ø3.0x60/76, 5x5x85 mm Gooch & Housego’s FPB-xxxxxxxxx series of fused PM bow tie couplers enable the accurate monitoring and splitting of optical signals in polarization maintaining (PM) fiber. Manufactured using PM bow tie fiber, the FPB-X PM couplers are available in any coupling ratio from 1 to 50%. Based on Gooch &Housego’s (G&H) fused fiber technology, the FPB-X PM bow tie couplers demonstrate very low loss, high power handling and there is no price penalty for adding a second input port. The center operating wavelength may be chosen from within the 1 μm operating passband, other operating passbands are available dependent on fiber availability. In common with all PM components, it is necessary to launch into either the slow or the fast axis to maintain polarization. For the G&H PM FPB-X series bow tie couplers, specifications are based on slow axis launch, although fast axis versions are also available if requested. NOTE: Other component types including ultra-low ratio taps (ULRT) and wavelength division multiplexers (WDM) are available on request, please contact AMS Technologies with your specific requirements. Key Features: All PM Bow Tie Fiber Construction Fiber Type: Fibercore Bow Tie HB1000C – 6 and 10 μm Core Operating Wavelength Range: 900 to 1199 nm Broad Range of Coupling Ratios: 1/99 to 50/50 Low Excess Loss: 0.3 dB Return Loss (RL): 50 dB High Optical Power Handling: 4 W 1 μm Passband as Standard Slow Axis Operation as Standard, Fast Axis Operation Also Available Extinction Ratio: 17, 20 dB Number of Legs: 1x2, 2x2 Pigtail Length: 0.5, 1 m Connector Type: FC/PC-PM, FC/APC-PM, None Dimensions: Ø3.0 x 60/76, 5 x 5 x 85 mm Applications: Power Monitoring of PM Sources; Coherent Communications; Fiber Gyroscopes; High-power Fiber Lasers; Fiber Amplifiers

Axis-matched, Low Ratio Tap; Fiber Type PM, PLMA Panda, SM; 900-1600 nm; Number of Legs 1x2, 2x2; Splitting Ratio 0.01-10%; Fiber Length 0.5, 1 m; IL 0.5-1.0 dB; RL >50 dB; Dimensions Ø3.0x60/75, 5x5x85 mm Gooch & Housego’s FPM-xxxxxxxxx series of fused PM axis-matched low ratio tap fiber couplers enable low-power monitoring of a PM signal path. Gooch & Housego (G&H) proprietary PM manufacturing technology provides tap ratios as low as 0.01% with low loss and high signal path polarization extinction ratio. Fused PM axis-matched low ratio tap fiber couplers exhibit outstanding tap ratio stability even when system polarization extinction ratio levels are low or fluctuating. The all-fiber construction and excellent loss characteristics provide exceptional reliability at high power as well as wide temperature range operation with temperature dependent loss (TDL) typically <0.002 dB/°C for the tap path. These high-performance parts are available at a range of wavelengths with different fiber options. FPM-X series fused PM axis-matched low ratio tap fiber couplers can therefore be readily specified in a wide variety of applications, enabling rapid design cycles and new project builds. Standard parts are available at wavelengths from 900 to 1600 nm. For other wavelengths or coupling ratios please contact AMS Technologies. Key Features: Operating Wavelength Range: 900 to 1600 nm Low Signal Insertion Loss (IL): 0.5 to 1.0 dB Tap Insertion Loss: 8.86 to 44 dB High Signal Path Polarization Extinction Ratio (PER): >20 dB Ultra-low Polarization Axis Dependent Loss (PADL): <0.10 dB Low Temperature Dependent Loss (TDL): <0.002 dB/°C Typical Return Loss (RL): >50 dB Fast/Slow Axis Operation Signal Fiber Type: Polarization Maintaining (PM) and PLMA Panda Tap Fiber Type: Single Mode (SM) Fiber Coupling Ratio: 0.01% to 10% High Optical Power Handling: 4 W Number of Legs: 1x2, 2x2 Pigtail Length: 0.5, 1 m Connector Type: FC/PC-PM, FC/APC-PM, None Dimensions: Ø3.0 x 60/75, 5 x 5 x 85 mm Applications: High-power Fiber Lasers; Fiber Amplifiers; Instrumentation; Coherent Communications; Fiber Gyroscopes; Power Monitoring of PM Sources

Low Ratio Tap; Fiber Type PM Panda; 900-1600 nm; Number of Legs 1x2, 2x2; Splitting Ratio 0.01-10%; Fiber Length 0.5, 1 m; IL 0.3-0.9 dB; RL >55 dB; Dimensions Ø3.0x60/75, 5x5x85 mm Gooch & Housego’s FPU-xxxxxxAxx series of fused PM low ratio tap couplers tap off low power from a signal path whilst maintaining polarization through the component. Gooch & Housego (G&H) proprietary PM manufacturing technology provides tap ratios as low as 0.01% with ultra-low loss and high polarization extinction ratio. The all-fiber construction and excellent loss characteristics provide exceptional reliability at high powers. FPU-X PM low ratio tap couplers also exhibit improved tap ratio stability when input polarization extinction ratio levels are low or fluctuating. These high-performance parts are available at a range of wavelengths with different fiber options. FPU-X PM low ratio tap couplers can therefore be readily specified in a wide variety of applications, enabling rapid design cycles and new project builds. Standard parts are available at wavelengths from 900 – 1600 nm. For other wavelengths or coupling ratios please contact AMS Technologies. Key Features: Operating Wavelength Range: 900 to 1600 nm Low Signal Insertion Loss (IL): 0.3 to 0.9 dB Tap Insertion Loss: 8.86 to 44 dB High Signal Path Polarization Extinction Ratio (PER): >20 dB Return Loss (RL): >55 dB Fiber Type: Polarization Maintaining (PM) Panda on All Ports Coupling Ratio: 0.01% to 10% High Optical Power Handling: 4 W Number of Legs: 1x2, 2x2 Pigtail Length: 0.5, 1 m Connector Type: FC/PC-PM, FC/APC-PM, None Dimensions: Ø3.0 x 60/75, 5 x 5 x 85 mm Applications: Fiber Lasers; Instrumentation

Fused; Fiber Type PM Panda; 780-2100 nm; Number of Legs 1x2, 2x2; IL <0.3-<1.0 dB; RL 55 dB; PER >15->20 dB; Dimensions Ø3.0x85, 5x5x85 mm Gooch & Housego’s FPW-xxxxxxxxx series of fused polarization maintaining (PM) wavelength division multiplexers (WDMs) combine multiple wavelengths of light in PM fiber whilst maintaining polarization.Gooch & Housego (G&H) proprietary PM manufacturing technology provides low loss with high polarization extinction ratio. The all-fiber construction offers excellent reliability and high power handling characteristics.These high-performance parts are available in many wavelength configurations, housing, fiber and connector options and can therefore be readily specified in a wide variety of applications, enabling rapid design cycles and new project builds.In common with all PM components, it is necessary to launch into either the slow or the fast axis to maintain polarization. For the G&H FPW-X series of PM WDMs, specifications are based on slow axis launch, although fast axis versions are also available if requested.Key Features:- Operating Wavelength Range: 780 to 2100 nm- Low Signal Insertion Loss (IL): <0.3 to <1.0 dB - High Signal Path Polarization Extinction Ratio (PER): >15 to >20 dB- Return Loss (RL): 55 dB- Fiber Type: Polarization Maintaining (PM) Panda on All Ports- Slow Axis Operation as Standard, Fast Axis Operation Also Available- High Optical Power Handling: 4 W- Number of Legs: 1x2, 2x2- Connector Type: FC/PC-PM, FC/APC-PM, None- Dimensions: Ø3.0 x 85, 5 x 5 x 85 mmApplications: Pump Signal WDM for EDFA; Fiber Lasers; Instrumentation; Telecoms; IR Imaging; Biomedical; Industrial; Defense; IR Counter Measures

Fused; Fiber Type MM 20/125, 62.5/125 µm; 850, 1310 nm; Number of Legs 1x2; IL ≤0.6, ≤0.7 dB; RL ≥30 dB; Dimensions Ø5.5x34 mm Gooch & Housego’s FWDM-X series of multi mode (MM) micro-optic wavelength division multiplexers (WDMs) offer a broad operation bandpass, with low insertion loss and high channel isolation. The FWDM-xxx8531 xxxxx line of micro-optic based multi mode fiber WDM components for 850/1310 nm channels features flat response over a broad operating band, making these WDM devices very suitable for data communication, CATV and other applications. The units are available in multi mode fibers 50/125 µm, 62.5/125 µm and other fibers available upon request. Key Features: Broad Operating Bandpass for Center Wavelengths 850 or 1310 nm, ±50 nm Low Insertion Loss (IL): ≤0.6, ≤0.7 dB High Channel Isolation: ≥15, ≥30 dB High Performance and Reliability Number of Legs: 1x2 Fiber Type: Multi Mode (MM) 20/125 µm or 62.5/125 µm Lead Length: 0.5, 1 m, etc. Return Loss (RL): ≥30 dB Optical Power Handling: ≤500 mW Connector Type: ST, FC, SC, None Dimensions: Ø5.5 x 34 mm Applications: Data Communication Systems; CATV; WDM; Test Instruments

955-1620 nm; Number of Legs 1x2, 2x2; RL >50->55 dB; Optical Power Handling 4 W; Dimensions Ø3.0 x 50-85 mm Gooch & Housego’s range of high reliability (HI-REL) fused fiber optic components are deployed in environments such as undersea and space where the costs of component replacement are prohibitive, and reliability is of premier concern. Gooch & Housego (G&H) is established as a supplier of these components to major undersea equipment manufacturers. G&H’s HI-REL capability is built upon the foundation of a long-established history of manufacturing very reliable components for land-based (or terrestrial) systems in volume. Full facilities are available to carry out customer-specific HI-REL qualification programs, which can include accelerated ageing and Weibull analysis. Manufacturing is carried out on specially developed workstations. Advanced fiber management, in-process screening and customer-specific validation tests are implemented to further enhance component reliability. Failure rates for undersea telecommunication systems and components are often described using a FIT rate (Failures in Time). The fused fiber couplers from our HI REL coupler range offer a very low 0.1 FIT rate, equivalent to one failure in roughly fifty thousand components in 25 years. The ultra-low loss of G&H fused fiber components helps to promote low noise figure and improved system margin in undersea transmission systems. Components are supplied in regular (bare fiber), semi-ruggedized (ø0.9 mm sleeving) or custom housings, depending on the installation environment. Please contact AMS Technologies to discuss your specific requirements. Services for HI REL customers include custom qualification programs, dedicated workstations, full traceability of materials and processing, advanced fiber management, and customer-specific validation tests. G&H high reliability fused fiber optic component types available include fused fiber couplers, tap couplers, wavelength division multiplexers (WDMs) and pump combiners: FFC-xxxxHBxx0 series high reliability fused couplers are available for the 980 nm band (FFC-xx3xHB2x0) with coupling ratios of 5%, 10% or 50% and OFS–BFO5635–02 optical fiber as well as for C or L band (FFC-xxxxHB1x0) with coupling ratios of 2%, 5%, 10% or 50% and Corning SMF-28e+ Photonic optical fiber. FFP-xx3xxxHx0 series high reliability fused polarization maintaining (PM) couplers are available for five wavelength ranges from 915 to 1599 nm with coupling ratios of 1%, 5%, 10% or 50% and 250 µm buffer Panda PM optical fiber. FPU-XXX3XXHX0 series high reliability PM low ratio tap couplers tap-off low power from a signal path whilst maintaining polarization through the component. G&H proprietary PM manufacturing technology provides tap ratios as low as 0.01% with ultra-low loss and high polarization extinction ratio. These PM low ratio tap couplers are available for any operating wavelength from 1450 to 1620 nm with coupling ratios of 0.01%, 0.1%, 1%, 5% or 10% and Nufern PM14XX C-A optical fiber. FFW-xC3xH2xx0 series high reliability wavelength division multiplexers (WDMs) are available for 1550 nm (C band) signal wavelength and pump wavelengths of 980 nm (FFW-5C3xH22x0, OFS BFO5635-02 optical fiber) as well as 1480 nm (FFW-3C3xH21x0, Corning SMF-28e+ Photonic optical fiber). FPW-5C3xH2xx0 series high reliability 980/1550 nm PM wavelength division multiplexers (WDMs) combine multiple wavelengths of light in PM fiber whilst maintaining polarization. In common with all PM components, it is necessary to launch into either the slow or the fast axis to maintain polarization. For the G&H FPW-5C3xH2xx0 PM WDMs, specifications are based on slow axis launch, although fast axis versions are also available if requested. PBC-xxxxxxxxx series high reliability polarization beam combiners enable the efficient combination of two orthogonally polarized sources of light into a common output fiber. This allows EDFA (Erbium Doped Fiber Amplifier) designers to double pump powers whilst ensuring pump redundancy should a pump failure occur, enabling higher power EDFAs and in turn greater data carrying capacity. Applications include high-power optical amplifiers and undersea systems. All ports consist of polarization maintaining fiber. Key Features: Established High Reliability Supplier Manufactures Using HI-REL Methodology Operating Wavelength Range: 955 to 1620 nm Number of Legs: 1x2, 2x2, 2x2 Terminated High Performance High Optical Power Handling: 4 W Low Loss Return Loss: >50 to >55 dB High Polarization Extinction Ratio (PER, Polarization Maintaining (PM) Components) Slow Axis Operation as Standard, Fast Axis Operation on Request (PM Components) Full Qualification Facilities Available Customer-specific Compliance Design Standard 0.1 FITs (Failure in 1 Billion Field Hours) For Most Components Advanced In-process Testing Ultra-low Loss Fused Components Pigtail Length: 0.5 to 4 m No Connector Choice of Housings Dimensions: Ø3.0 x 50 to 85 mm Applications: Subsea Equipment; Terminal Equipment; Space; Defense and Avionic; Fiber Lasers; Erbium-doped Fiber Amplifiers (EDFAs); Raman Amplifiers; Coherent Optical Communications; Instrumentation; Harsh Environment; Satellite Laser Communications; Satellite On-board Optical Processing