Raman mitigation in high-power fiber laser transmission by long period fiber grating for longer delivery distance

Qihao Hu; Xin Tian; Meng Wang; Zefeng Wang; Xiaojun Xu

doi:10.1117/12.2573874

10 October 2020 Raman mitigation in high-power fiber laser transmission by long period fiber grating for longer delivery distance

Qihao Hu, Xin Tian, Meng Wang, Zefeng Wang, Xiaojun Xu

Author Affiliations +

Proceedings Volume 11544, High-Power Lasers and Applications XI; 1154406 (2020) https://doi.org/10.1117/12.2573874
Event: SPIE/COS Photonics Asia, 2020, Online Only

Abstract

High power fiber laser is of importance for a wide range of scientific and industrial processes but the transmission distance is till restricted because of stimulated Raman scattering (SRS). We research here on the mitigation of the SRS in highpower fiber laser systems by long period fiber gratings (LPFGs) for longer laser delivery distance. A broadband and high attenuation LPFG is carefully designed and fabricated by a CO₂ based inscription system. It has been proven effective in extending delivery distance due to its filtering effect of Raman signal.

Conference Presentation

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Qihao Hu, Xin Tian, Meng Wang, Zefeng Wang, and Xiaojun Xu "Raman mitigation in high-power fiber laser transmission by long period fiber grating for longer delivery distance", Proc. SPIE 11544, High-Power Lasers and Applications XI, 1154406 (10 October 2020); https://doi.org/10.1117/12.2573874

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