Weak reflectivity measurement of FBGs by method of grating scale

Qiushi Qin; Meng Wang; Binyu Rao; Zefeng Wang

doi:10.1117/12.2587559

12 March 2021 Weak reflectivity measurement of FBGs by method of grating scale

Qiushi Qin, Meng Wang, Binyu Rao, Zefeng Wang

Proceedings Volume 11763, Seventh Symposium on Novel Photoelectronic Detection Technology and Applications; 1176386 (2021) https://doi.org/10.1117/12.2587559
Event: Seventh Symposium on Novel Photoelectronic Detection Technology and Application 2020, 2020, Kunming, China

Abstract

In this paper, we propose a novel method of weak reflectivity measurement of FBGs by grating scale. We design and manufacture a series of scale gratings in single-mode fiber using excimer laser and phase mask. The weak reflectivity of measured grating could be achieved by comparing the peak reflection resonance with that of scale gratings. Experimental results show that the reflectivity measurement method based on grating scale is simple and quick, and it does not depend on the transmission spectrum of grating and could effectively avoids the influence of higher-order modes. In the future, by improving grating manufacture technology, it is expected that the reflectivity can be measured more accurately.

Citation Download Citation

Qiushi Qin, Meng Wang, Binyu Rao, and Zefeng Wang "Weak reflectivity measurement of FBGs by method of grating scale", Proc. SPIE 11763, Seventh Symposium on Novel Photoelectronic Detection Technology and Applications, 1176386 (12 March 2021); https://doi.org/10.1117/12.2587559

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