GTL-FBG-FS-880 Femtosecond Fiber Bragg Gratings

Numerical Aperture 0.09; Core Dia. 20 µm; Cladding Dia. 127 µm; Gray Loss <20 dB/km; Polarization Extinction Ratio >20 dBGreitlex Photonics’ SBS-DC series of SBS-suppressed optical fibers feature a suppressed stimulated Brillouin scattering gain. Stimulated Brillouin scattering (SBS) is the major factor limiting maximal power of narrow-band fiber lasers (less than 100 MHz linewidth). It is especially crucial in applications which require small mode field diameter (MFD), i.e. Raman amplifiers. Suppression of SBS gain, while maintaining MFD (and Raman gain) becomes a very important task in such fibers. Another promising application of single-frequency lasers is LIDAR (Light Detection And Ranging). In the case of all-fiber systems, it is the passive fibers at the amplifier output (pigtails of isolators, circulators, collimators) that limit the maximum achievable peak power. Thus, development of large mode area (LMA) passive fibers with increased SBS threshold (as compared to standard LMA fibers) is more and more critical for those applications. To suppress SBS gain for a fixed MFD, Greitlex Photonics uses a specially designed multi-layer, multi-components doped core. It allows to suppress SBS gain by 3 to 5 dB relative to standard, uniformly doped Ge-doped passive fibers with the same MFD. The developed method allows Greitlex Photonics to design custom dopants distribution over the core to suppress SBS by 3 to 5 dB for most of the actual optical refractive index profiles (any core numerical aperture and diameter). The SBS-DC-20/125-1550PM polarization maintaining (PM) fiber has been specially designed to be used in pigtails of output components (isolators, collimators, pump-and-signal combiners etc.) of high peak-power single-frequency lasers operated near 1550 nm. The fiber is intended for utilization in systems with the ability to maintain polarization. Fibers with suppressed SBS-gain for a custom designed operating wavelength, core numerical aperture (NA) and diameter are available on request. Please contact AMS Technologies to discuss your customized SBS-suppressed optical fiber solution. Key Features: Suppressed Stimulated Brillouin Scattering (SBS) Gain Core Diameter: 20 µm Cladding Diameter: 127 µm Core Numerical Aperture: 0.09 Gray Loss: <20 dB/km Polarization Extinction Ratio (After 2 m): >20 dB Applications: Narrow-band Fiber Lasers; Raman Amplifiers; Pigtails of Output Components (Isolators, Collimators, Pump-and-signal Combiners etc.) of High Peak-power Single-frequency Lasers

Wavelength 600-2300 nm; Bandwidth 0.05-1.2 nm; Reflectivity 5-99%; SLSR >8 dB; Fiber Type SM, PM, Double Clad, LMA, Custom; Fiber Pigtail Length ≥0.5, CustomGreitlex Photonics’ GTL-FBG-TB-890 tunable fiber Bragg gratings (FBGs) are a good solution for many applications – including those requiring a corrected central Bragg wavelength. An FBG’s central wavelength strongly depends on applied stress, with the mechanically induced strain linearly shifting the FBG’s central wavelength.The tunable fiber Bragg grating wavelength’s relative strain sensitivity is 0.78 * 10-6 µstrain-1. GTL-FBG-TB-890 tunable fiber Bragg gratings are boxed and operated manually. Athermal performance with an adjustment range of 2 nm is also possible. The gratings are available as bare fibers or with a variety of optical connectors. These FBGs replace similar products from the former FORC Photonics. The following configurations can be changed at the customer's request, please contact AMS Technologies to discuss a customized tunable fiber Bragg grating solution tailored to your project’s requirements.Key Features:Wavelength Range: 600 nm to 2300 nmWavelengths to Quick Order [nm]: 633, 780, 794, 797, 799, 801, 809, 830, 852, 895, 940, 976, 1030, 1057, 1060, 1064, 1080, 1125, 1150, 1178, 1240, 1270, 1310, 1484,1510 - 1580, 1650, 1900, 1908, 1952, 2300Fiber Type: Single Mode (SM), Polarization Maintaining (PM), Double Clad, LMA, CustomThermal Wavelength Stability (0°C to +60°C): <0.18 nmReflectivity: 5% to 99%Bandwidth (WFHM): 0.05 nm to 1.2 nmFBG Length: 1 mm to 20 mmAdjustment Range: 2 nmSLSR: >8 dBFBG Pigtail Length: ≥0.5 mFBG Recoating: On Customer Request Tensile Strength: >100 kpsiOptical Connector: Bare Fiber, FC/APC, LC/APC, CustomPackage Dimensions: 66 x 18 x 16 mmApplications: Where Corrected Central Bragg Wavelength is Necessary

Cut off Wavelength 650, 1000 nm; Mode Field Dia. 2.0, 4.3 µm; Zero-dispersion Wavelength 800 to 1000 nm; Optical Loss <30, <100 dB/kmGreitlex Photonics’ HN-PCF series is a new type of fibers, so-called micro-structured or photonic crystal fibers. This type of fibers features holes or inclusions of a material with different refractive index in the core and/or in the cladding.New dispersion and nonlinear properties can be observed in photonic crystal fibers. Most of the specific applications for micro-structured fibers require their own specific structure of the fiber. Greitlex Photonics has the capabilities to design and fabricate a broad variety of fiber structures according to customer orders.Other parameters are available on the request.The HN-PCF-800 fiber is specially designed for supercontinuum generation using Ti-sapphire ultra-fast femtosecond lasers, while the HN-PCF-1040 fiber is specially designed for supercontinuum generation using Yb-doped picosecond or femtosecond ultra-fast fiber lasers. They replace similar products from the former FORC Photonics. Key Features:Mode Field Diameter: 2.0, 4.3 µmZero-dispersion Wavelength: 800 to 1000 nmNonlinear Coefficient: 10, 90 1/W*kmOptical Loss: <30, <100 dB/kmCut off Wavelength: 650, 1000 nmApplications: Supercontinuum Generating Using Ti-sapphire or Yb-doped Ultra-fast Lasers

Wavelength 600-2300 nm; Bandwidth 0.1-1.2 nm; Reflectivity 0.5-99.9%; SLSR ~8, ~10 dB; Fiber Type SM, PM, Double Clad, LMA, Radiation Resistant, Custom; Fiber Pigtail Length ≥0.5, CustomFiber Bragg gratings (FBGs) have many applications in optical communication, laser technique and sensing systems. Greitlex Photonics’ series of specific application FBGs are widely used for applications like in-fiber mirrors or optical filters with narrowband optical spectrum. Fiber Bragg gratings also are one of the most popular elements in the field of fiber-optic sensing.Within Greitlex Photonics’ series of specific application fiber Bragg gratings (FBG) you find:Wavelength Locker FBGsWDM ITU Filter 100/200 GHz FBGsRaman Laser FBGsFabry-Perot Interferometer FBGsHard Environment FBGsRadiation Hard FBGsGTL-FBG-WL-810 wavelength locker fiber Bragg gratings are used as external reflectors for laser diodes. With the help of these FBGs it is easy to stabilize the wavelength generation of pump semiconductor lasers and single-frequency lasers. Low-reflection gratings with a full width at half maximum (FWHM) bandwidth of 0.3 nm to 0.8 nm and a reflectivity of 2% to 5 % are ideal for stabilizing pump power lasers. FBGs with FWHM bandwidths around 0.1 nm and reflections of 10% to 20% are used close to semiconductor laser crystals for creation of single-frequency sources. Greitlex Photonics provides wavelength locker FBGs with very accurate wavelength positions (up to ±0.02 nm).Greitlex Photonics’ GTL-FBG-WDM-810 series of WDM ITU Filter 100/200 GHz fiber Bragg gratings with narrow spectral bandwidth are good elements for filtering optical signals. Such FBGs are widely used as optical add/drop multiplexer in WDM systems. A high level of SLSR is allowed to avoid adjacent channel crosstalk in systems. These FBGs feature a flat-top reflection spectrum and steep spectral roll-down. Athermal packaging of the FBG with wavelength stability <0.16 nm for a temperature range of 0°C to +70⁰C is required for stable operation.Highly efficient multi-cascaded Raman lasers based on phosphosilicate fibers can be created at different wavelength using our GTL-FBG-RL-880 Raman laser fiber Bragg gratings. Compared to Germanium-doped fibers, an approximately three times larger Raman shift can be achieved.For many applications where very small temperature or strain changes have to be measured using acoustic waves, the sensitivity can be enhanced by using pairs of FBGs. A Fabry-Perot interferometer based on Greitlex Photonics’ GTL-FBG-FPI-810 Fabry-Perot interferometer fiber Bragg gratings is such a pair of FBGs, allowing to detect a small phase shift. By coating the fiber between the gratings with an electric, magnetic or acoustic enhancing coating, very small changes of these fields can be measured. For sensing purposes and to evaluate small vibration or acoustic signals via an interferometric method, it is often sufficient to work with a low-finesse Fabry-Perot cavity.GTL-FBG-HE-810 hard environment fiber Bragg gratings can be provided as separated or chains of FBGs with different wavelengths, allowing for multipoint temperature monitoring. Different types of single mode (SM) optical fibers and fiber coatings can be used for writing these gratings. High-temperature acrylate coated fibers apply for temperature ranges up to +150°C. Polyimide or metal (Cu, Al) coated fibers are used for high-temperature applications with maximum temperatures of +300°C and +500°C respectively. Using a steel tube protection, our hard environment FBGs can be applied up to +700°C.GTL-FBG-RH-880 radiation hard fiber Bragg gratings written in radiation resistant pure silica core fibers are ideal for applications in the atomic energy industry, aerospace and other radiation intense environments.All those FBGs replace similar products from the former FORC Photonics. Key Features:The following configurations can be changed at the customer's request, please contact AMS Technologies to discuss an application-specific, customized fiber Bragg grating solution tailored to your project’s requirements.   GTL-FBG-WL-810 Wavelength Locker FBGs GTL-FBG-WDM-810 WDM ITU Filter 100/200 GHz FBGs GTL-FBG-RL-880 Raman Laser FBGs GTL-FBG-FPI-810 Fabry-Perot Interferometer FBGs GTL-FBG-HE-810 Hard Environment FBGs GTL-FBG-RH-880 Radiation Hard FBGs Wavelength Range [nm] 630 - 2300 1530 - 1565 (C Bands) or Custom 1510 - 1580 1240, 1270, 1484 600 - 2300 1000 - 2300 Wavelengths to Quick Order [nm] 30 values between 633 and 2300 - - - 30 values between 633 and 2300 - Fiber Type Single Mode (SM), Polarization Maintaining (PM), Custom Single Mode (SM) Corning SMF-28 Single Mode (SM), Polarization Maintaining (PM), Double-clad, LMA, Custom Single Mode (SM), Polarization Maintaining (PM), Radiation Resistant, Custom Single Mode (SM), Polarization Maintaining (PM), Double-clad, LMA, Custom Single Mode (SM), Polarization Maintaining (PM), Radiation Resistant, Custom Reflectivity [%] 2 - 5, 10 - 20 10 - 99, Flat-top Typical > 99.5 5 - 99.9 0.5 - 99 Bandwidth (WFHM) [nm] 0.3 - 0.8, 0.1 - 0.15 100/200 GHz on ITU For 100 GHz: @-0.5 dB >0.3 nm, @-20 dB 0.65 nm 0.15 - 1.2 0.3 - 0.8 0.15 - 0.8 0.3 - 0.5 Distance Between FBGs [mm] - - - 1 - 200, Custom - - Channel Isolation [dB] - -20 - - - - Insertion Loss [dB] - <0.15 - - - - Cladding Mode Loss [dB] - <0.5 (Only for Cladding Mode Suppressed Fiber) - - - - SLSR [dB] ~10 - ~8 - ~8 ~8 FBG Pigtail Length [m] ≥0.5, Custom FBG Recoating None, Acrylate, Polyimide, Aluminium, Copper, Custom None, Acrylate, Polyimide, Custom None, Acrylate, Polyimide, Aluminium, Copper, Custom Tensile Strength [kpsi] >100 - >100 Thermal Wavelength Stability (0°C - +70°C) [nm] - <0.16 - - - - Optical Connector Bare Fiber, FC/APC, LC/APC, Custom Package Dimensions LxWxH [mm] - 66 x 18 x 12 - - - -  Applications: External Reflectors for Laser Diodes; Filtering Optical Signals; Optical Add/Drop Multiplexer in WDM Systems; Measuring Small Temperature or Strain Changes; Evaluating Small Vibration or Acoustic Signals; Multi-cascaded Raman Lasers; High-temperature Applications; Atomic Energy Industry; Aerospace