1 May 2017 Theoretical analysis of fused tapered side-pumping combiner for all-fiber lasers and amplifiers
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Abstract
We report detailed theoretical analysis on the influence of the fused depth, launch mode and taper ratio on the performance of side-pumping combiner. The theoretical analysis indicates that the coupling efficiency and loss mechanism of the combiner is closely related to the fused depth, tapering ratio and the launch mode. Experimentally, we fabricate combiners consisting of two pump fibers (220/242 μm, NA=0.22) and a signal fiber (20/400 μm, NA=0.46). The combined pump coupling efficiency of two pump port is 97.2% with the maximum power handling of 1.8 kW and the insertion signal loss is less than 3%.
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Chengmin Lei, Zilun Chen, Jinyong Leng, Yanran Gu, Jing Hou, "Theoretical analysis of fused tapered side-pumping combiner for all-fiber lasers and amplifiers", Proc. SPIE 10192, Laser Technology for Defense and Security XIII, 101920N (1 May 2017); doi: 10.1117/12.2261405; https://doi.org/10.1117/12.2261405
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