Poster + Paper
10 October 2020 Fabrication of tilted fiber Bragg grating for stimulated Brillouin scattering suppression in fiber
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Conference Poster
Abstract
Stimulated Brillouin scattering (SBS) is one of the mainly factors those limit the output power in narrow-linewidth highpower fiber laser systems. Here, we propose and demonstrate a novel method for the suppression of SBS in optical fibers using a tilted fiber Bragg grating (TFBG). With a TFBG being inserted between a single-mode fiber (SMF) amplifier and a 150-meter-length single-mode energy-transmitting fiber, not only the backward Stokes wave is rejected, but also an obvious increasing of the SBS threshold is observed with a value of 1.2 times that without the TFBG, which increases the effective laser output power by about 18 %. This work provides a new idea for SBS suppression in fiber. It is very useful for the further power scaling of high-power narrow bandwidth all-fiber lasers.
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Meng Wang, Xin Tian, Xiaofan Zhao, and Zefeng Wang "Fabrication of tilted fiber Bragg grating for stimulated Brillouin scattering suppression in fiber", Proc. SPIE 11544, High-Power Lasers and Applications XI, 115440F (10 October 2020); https://doi.org/10.1117/12.2573909
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KEYWORDS
Fiber lasers

Fiber Bragg gratings

Laser scattering

Scattering

Laser systems engineering

Optical filters

Coherent beam combination

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