Precise measurement for reflectivity of weak reflection FBG by Fabry Perot scale grating

Qiushi Qin; Meng Wang; Binyu Rao; Zefeng Wang

doi:10.1117/12.2598965

6 June 2021 Precise measurement for reflectivity of weak reflection FBG by Fabry Perot scale grating

Qiushi Qin, Meng Wang, Binyu Rao, Zefeng Wang

Proceedings Volume 11849, Fourth International Symposium on High Power Laser Science and Engineering (HPLSE 2021); 118490Y (2021) https://doi.org/10.1117/12.2598965
Event: Fourth International Symposium on High Power Laser Science and Engineering (HPLSE 2021), 2021, Suzhou, China

Abstract

In this paper, we design and fabricate a series of single-mode scale gratings based Fabry Perot (FP) by using excimer laser and chirped phase mask, then use it to measure the reflectivity of weak reflection gratings on large-mode-area doubleclad (LMA-DC) fibers. Experimental results show that the Bragg resonance reflectivity of the LMA-DC weak reflection grating is between 1.19% and 1.49%. The method of measuring weak reflection grating reflectivity based on scale grating is convenient, efficient, and the accuracy is greatly improved.

Citation Download Citation

Qiushi Qin, Meng Wang, Binyu Rao, and Zefeng Wang "Precise measurement for reflectivity of weak reflection FBG by Fabry Perot scale grating", Proc. SPIE 11849, Fourth International Symposium on High Power Laser Science and Engineering (HPLSE 2021), 118490Y (6 June 2021); https://doi.org/10.1117/12.2598965

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