SBS-DC SBS-suppressed Optical Fibers

Product number: SW11016

Manufacturer: FORC Photonics

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Product information "SBS-DC SBS-suppressed Optical Fibers"

Numerical Aperture 0.09; Core Dia. 20 µm; Cladding Dia. 127 µm; Gray Loss <20 dB/km; Polarization Extinction Ratio >20 dB

FORC-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, FORC-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 FORC-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

Manufacturer "FORC Photonics"

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