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

Single Mode Couplers & Combiners, All Band; 1260 to 1620 nm; Coupling Ratio 1/99 to 50/50; Directivity ≥55 dB; Fiber Type SMF-28e, others LightComm Technology builds its ABC all band coupler series using a special technique. The operating bandwidth of the couplers is expanded to 1260 nm to 1620 nm, and the devices feature low excess loss and low PDL. Key Features: Low Excess Loss Low PDL All Band Operating Wavelength High Stability and Reliability Applications: Optical Communication Systems; CATV; FTTH

PM or SM Splitters/Combiners; 1550 nm, Other; Splitting Ratio 50/50-90/10; PDL ±0.25 dB; Directivity >50 dB OZ Optics’ fiber optic beamsplitters are used to divide light from one fiber into two or more fibers. Light from an input fiber is first collimated, then sent through a beam-splitting optic to divide it into two. The resultant output beams are then focused back into the output fibers. Both 1xN and 2xN splitters can be constructed in this fashion with as many as eight or more outputs, with both low return losses and low insertion losses. Standard parts available in this series are FOBS-12P (1x2) and FOBS-22P (2x2) pigtail-style splitters, FOBS-12 (1x2) and FOBS-22 (2x2) receptacle-style splitters, as well as LDBS-12P (pigtail-style) and LDBS-1 (receptacle-style) laser diode to fiber splitters, and finally ULBS-12P (pigtail-style) and ULBS-1 (receptacle-style) laser to fiber splitters This design is extremely flexible, allowing to use different fiber types on different ports, and different beamsplitter optics inside. Custom designs combining circulators, polarizing splitters and non-polarizing splitters in the same package are routinely manufactured. Splitters can be made with either fibers permanently attached to each port (pigtail style) or with receptacles on each port that one can plug your fiber into (receptacle style). OZ Optics can also build source to fiber couplers with built-in beamsplitters for either laser or laser diode sources. Contact AMS Technologies for details. If size is a concern, we recommend that you consider OZ Optics’ miniature line of splitters. Within OZ Optics’ series of beamsplitters and combiners, the two most common types of splitters offered are polarizing beamsplitters and polarization maintaining (PM) beamsplitters. Polarizing beamsplitters split incoming light into two orthogonal states. They can also be used to combine the light from two fibers into a single output fiber. When used as a beam combiner, each input signal will transmit along a different output polarization axis. PM splitters use a partially reflecting mirror to transmit a portion of the light from the input fiber to the main output fiber and reflect the remainder of the light to the second output fiber. All ports made using polarization maintaining fiber are aligned so that polarized light aligned parallel to the stress rods on the input fiber emerges from the output fibers in the same manner, maintaining the polarization state to a high degree. Splitters that only split off a small portion of the input light are commonly known as taps and often used for power monitoring applications. For a very cost-effective alternative configuration, combining the functions of a tap and monitor photodiode in a single unit, we invite you to review OZ Optics’ OPM series of inline optical taps and monitors. Key Features: High Power Handling High Extinction Ratio Highly Modular and Flexible Design Wide Wavelength Range Bi-directional Broadband Performance Custom Designs Welcomed Mode-independent Behavior in Multi Mode (MM) Fiber Applications Splitting Ratio: 50/50 Standard, Custom Split Ratios 50/50 to 95/5 Available on Request Splitting Ratio Tolerance: ±3% (50/50 Splitters), ±2% (90/10 Splitters) Central Wavelength: 1550 nm Standard, Other Wavelengths on Request Bandwidth: ±1.5% of Central Wavelength Wavelength Dependent Loss (WDL): 0.1 dB (1520-1570 nm) Polarization Extinction Ratio: 20 dB Min., 23 dB Typ. (630-1600 nm), 17 dB Min., 20 dB Typ. (400-630 nm) Polarization Dependent Loss (PDL): ±0.25 dB Directivity: >50 dB Return Loss (RL): 30 dB to 60 dB Insertion Loss (IL): <0.5 dB to <1.0 dB Power Handling: >1 W (+30 dBm) Operating Temperature Range: 0°C to +70°C Applications: EDFA Amplifier; Raman Amplifier Combiner; Polarization Mode Dispersion Compensation; Polarization Extinction Ratio (PER) Measurements; Fiber Optic Sensors; Coherent Communication Systems; Quantum Cryptography; Return Loss (RL) Measurement

Single Mode Couplers & Combiners, Dual Window, Standard / Mini Size; 1310 or 1550 nm; Coupling Ratio 1/99 to 50/50; Directivity ≥55 dB; Fiber Type SMF-28e, others LightComm Technology’s series of dual window couplers (DWC) is built with asymmetric coupling technique. The operating bandwidth of the normal couplers is expanding to ±40nm, while the ultra broadband coupler is expanding to ±80nm. The DWC coupler has the same coupling ratio on both 1310 nm and 1550 nm communication windows, and with low excess loss and low PDL. DWC couplers are widely used for communication systems, CATV, and FTTH. The mini size DWC is designed for compact optical modules and communication systems. Key Features: Low Excess & Insertion Loss Standard & Mini Size Low PDL Dual Operating Window High Stability and Reliability Applications: Optical Communication Systems; CATV; FTTH; Mini Size EDFAs; Mini Size Transmitter/Receiver Modules; Optical Communication Systems; Testing Instruments

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

Polarization Maintaining Splitters, Miniature Size; 980 to 1550 nm; Splitting Ratio 50/50 to 98/2; Polarization Dependent Loss 0.1 dB; Directivity >50 dB OZ Optics’ FOBS-12N series of miniature polarization maintaining fiber optic beam splitters are used to split the light traveling through a fiber into two fibers, or to split or combine orthogonally polarized light into separate fibers. These splitters feature a rugged miniature housing to fit into compact spaces in equipment and systems. Light from a fiber is first collimated, then sent through a beam-splitting optic to divide it into two beams by either a fixed ratio or into two orthogonal polarizations. The resultant output beams are then coupled back into the output fibers. This flexible design allows splitters with different fiber types on the input and output ports. For example, light from a single mode fiber could be split into its two orthogonal states and then launched into two polarization maintaining fibers. Standard products for 1550 nm applications are readily available, while custom items can be made with rapid turnaround at low cost. Products for other wavelengths, such as 980 nm, 1300 nm, or 1480 nm are offered. Contact AMS Technologies for details and a quotation. Also known as optical taps, the FOBS-12N series of miniature polarization maintaining splitters use a partially reflecting mirror to transmit a portion of the light from the input fiber to the main output fiber and reflect the remainder of the light to the second output fiber. All ports using polarization maintaining fiber are aligned so that polarized light aligned parallel to the stress rods on the input fiber emerge from the output fibers in the same manner, maintaining the polarization state to a high degree. Splitters that only split off a small portion of the input light are commonly known as taps. These splitters are often used for power monitoring applications. The small signal, typically between 1% and 10%, is sent to a monitoring photodiode, while most of the signal goes on to the main destination. Key Features: Rugged Compact Design Broad Wavelength Range Low Insertion, Return & Polarization Dependent Losses High Extinction Ratio- Low Wavelength Dependent Loss (WDL) Applications: EDFA Amplifiers; Raman Amplifier Combiners; Polarization Mode Dispersion Compensation; Polarization Extinction Ratio Measurements; Fiber Optic Sensors; Coherent Communication Systems; OCT Systems

Single Mode Splitters, Miniature Size; 980 to 1550 nm; Splitting Ratio 50/50 to 98/2; Polarization Dependent Loss 0.1 dB; Directivity >50 dB OZ Optics’ FOBS-12N series of miniature polarizing (single mode) fiber optic beam splitters are used to split the light traveling through a fiber into two fibers, or to split or combine orthogonally polarized light into separate fibers. These splitters feature a rugged miniature housing to fit into compact spaces in equipment and systems. Light from a fiber is first collimated, then sent through a beam-splitting optic to divide it into two beams by either a fixed ratio or into two orthogonal polarizations. The resultant output beams are then coupled back into the output fibers. This flexible design allows splitters with different fiber types on the input and output ports. For example, light from a single mode fiber could be split into its two orthogonal states and then launched into two polarization maintaining fibers. Standard products for 1550 nm applications are readily available, while custom items can be made with rapid turnaround at low cost. Products for other wavelengths, such as 980 nm, 1300 nm, or 1480 nm are offered. Contact AMS Technologies for details and a quotation. The FOBS-N12 series of polarizing beam splitters split incoming light into two orthogonal states. They can also be used to combine the light from two fibers into a single output fiber. When used as a beam combiner, each input signal will transmit along a different output polarization axis. By default, the output fibers on a polarizing splitter are aligned so that the output polarization from each fiber is in line with the stress rods of the fibers. If the input fiber is a polarization maintaining (PM) fiber, the input fiber is aligned such that light polarized parallel to the fiber’s stress rods is transmitted to port 1 of the splitter, while light polarized perpendicular to the stress rods is transmitted to port 2 of the splitter. Key Features: Rugged Compact Design Broad Wavelength Range Low Insertion, Return & Polarization Dependent Losses High Extinction Ratio- Low Wavelength Dependent Loss (WDL) Applications: EDFA Amplifiers; Raman Amplifier Combiners; Polarization Mode Dispersion Compensation; Polarization Extinction Ratio Measurements; Fiber Optic Sensors; Coherent Communication Systems; OCT Systems

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

Multi Mode Couplers & Combiners; 400 to 1600 nm; Splitting Ratio 50/50 to 99/1; Return Loss <50 dB; Directivity <50 dB OZ Optics' FUSED series of multi mode fused couplers are used to split optical signals between two fibers, or to combine optical signals from two fibers into one fiber. They are constructed by fusing and tapering two fibers together. This method provides a simple, rugged, and compact method of splitting and combining optical signals. Typical excess losses are as low as 0.2 dB, while splitting ratios are accurate to within ±5% at the design wavelength. The devices are bi-directional and offer low backreflection. The technique is best suited to single mode and multi mode couplers. Multi mode fused couplers are mode dependent. Certain modes within one fiber are transferred to the second fiber, while other modes are not. As a result, the splitting ratio will depend on what modes are excited within the fiber. The couplers are optimized for a uniform distribution of modes within the fiber known as an equilibrium mode field distribution. This condition is met by using an incoherent source, such as an LED, or by using a mode scrambler, to mix up the modes traveling through the fiber. It is also achieved by sending the signal through a long length of fiber, before it enters the coupler. OZ Optics fused couplers are available in a range of wavelengths, fiber sizes, and splitting ratios. The fiber ends can be terminated with a variety of fiber connectors. Standard configurations are One-by-Two and Two-by-Two couplers. N by M fused couplers, such as one by three, or one-by four, etc., are also available on request. Key Features: Wide Variety of Wavelengths 400 to 2005 nm Low Loss- Broad Bandwidth Good Uniformity Small Package High Directivity

Polarisation Maintaining Couplers & Combiners; 780 to 2005 nm; Splitting Ratio 50/50, 90/10, 95/5; Return Loss <50 dB; Directivity <55 dB Fusing and tapering the fibers together is a simple, rugged, compact method of splitting or combining optical signals. Typical excess losses are as low as 0.2 dB, while split ratio tolerances range from ±5% to ±0.5% at design wavelengths depending upon the splitting ratio. OZ Optics’ PM Fused Fiber Couplers are bidirectional and offer low backreflection and insertion losses. They exhibit a broad operating wavelength range of up to ±20 nm for 1550 nm region devices. Fused PM splitters are also available on smaller core fibers for 1064 nm, 980 nm and other wavelengths. (Nonstandard center wavelengths may require minimum order quantities or set up charges. Please contact AMS Technologies for assistance). A wide variety of options are available for fused PM splitters. Standard configurations are 1x2, 2x2, 1x3 (monolithic) and 1x4 (compact cascaded). A monolithic structure means that all fibers are fused together, while a cascaded device combines several 2x2 splitters to create a greater split count. OZ Optics can design and construct larger split counts or different split ratios upon request. OZ Optics has the capability to connectorize the fibers of fused splitters with all standard connectors such as FC, SC, ST, LC etc. and finishes (Super PC, Ultra PC, Angled PC [APC] etc.). As a component integrator, OZ Optics can construct additional components such as tunable filters, variable attenuators, or collimators directly onto the coupler fibers. In general OZ Optics uses polarization maintaining fibers based on the PANDA fiber structure when building polarization maintaining components. However OZ Optics can construct devices using other PM fiber structures and does carry some alternative fiber types in stock, so please contact AMS Technologies for availability. If necessary, OZ Optics is willing to use customer supplied fibers to build devices. Key Features:Wide Variety of Wavelengths 780 nm to 2005 nmLow Loss - Broad BandwidthGood UniformitySmall PackageHigh DirectivityWide Variety of Wavelengths 780 nm–2005 nm Applications: Optical Amplifiers; Fiber Lasers; Power Monitoring; Fiber Gyroscopes; Coherent Communications

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

Gooch and Housego’s high temperature couplers are an excellent choice to enable continuous operation at temperatures of 250 °C and higher, a capability made possible by Gooch & Housego’s (G&H) patented GlasSolder™ manufacturing technology. With GlasSolder™, the sensitive functional portions of the component are bonded to the package with a high-temperature glass/ceramic material, eliminating dependence on organic materials (such as epoxy) for structural support. This high-temperature advantage is available only from G&H. Key Features: Guaranteed Continuous Operation at 250 °C High-temperature GlasSolder™ Bonding Technology Polyimide Bonded Fiber High-temperature Strain-relief Materials Available for Most G&H Couplers With Standard Specifications and Package Sizes Applications: Down-hole Monitoring (Oil and Gas Exploration); Airframe Monitoring; Combustion Monitoring; Turbines and Engines; DTS Sensors and Smart Structures

Modal Insensitive; Fiber Type MM 20/125, 62.5/125 µm; 850, 1300 nm; Number of Legs 1x2; IL ≤1.1-≥14.5 dB; Dimensions Ø5.5x34 mm Gooch & Housego’s MMIC-X line of micro-optic based multi mode (MM) modal insensitive fiber coupler components feature stable coupling/split ratios with different types of light sources such lasers, SLDs and LEDs. Unlike the 15-X series of fused multi mode couplers/splitters, the MMIC-xx-xx-xx-xxx series of micro-optic based multi mode couplers can hold the designed split ratio unchanged for any type of light sources used during operation and testing. MMIC-X couplers are available in different split ratios (50/50, 10/90, 5/95) and can be made with either 50/125 µm or 62.5/125 µm multi mode fibers. Other fibers and coupling ratios are available upon request. Key Features: Modal Insensitive Broad Operating Bandpass for Center Wavelengths 850/1310 nm, ±50 nm High Performance Over Single Band (850 nm, 1310 nm) and Dual Band 850 and 1310 nm Insertion Loss (IL): ≤1.1 to ≥14.5 dB Stable Coupling Ratio for Any Light Source High Performance and Reliability Polarization Dependent Loss (PDL): ≤0.1 dB Number of Legs: 1x2 Fiber Type: Multi Mode (MM) 20/125 µm or 62.5/125 µm, Other Fibers on Request 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: Multi Mode Fiber Systems; LAN; Test Instruments; Bio/Medical Systems; Sensors; Research and Development

Pump Operating Wavelength 800, 1000 nm; Pump Fiber Core Diameter 105, 200 µm; Pump Efficiency 90 to 98 %; Fiber Length (Each Port) 80 cm; Power Handling (Each Port) 25 to 200 W LightComm Technology's MPC series of high power, multi mode, Nx1 pump combiners are passive components designed for high power fiber laser application. Combiners are used to combine several pump lasers with or without signals into one double cladding / multimode fiber. We can offer Nx1 combiners with different fiber types specified by our customer. Key Features: High Pump Efficiency Wavelength Insensitive Custom Configurations Available

Polarization Maintaining Couplers & Combiners; 780 to 1550 nm; Number of Legs 2x1; Power Handling ≤300 to ≤500 mW; Fiber Type PM Panda, SM LightComm Technology’s PBC series of polarization beam combiners are micro optics devices that can combine two polarized light signals into one output fiber. The typical configuration of PBC uses two PM fibers for input and one SM fiber for output. The PBC series is the ideal choice for application in EDFA, Raman amplifier, pump lasers, high speed communication systems and optical fiber sensors. Key Features: Low Insertion Loss High Extinction Ratio Excellent Stability and Reliability Applications: EDFA; Raman Amplifier; Optical Communications; Laboratory R&D