Fiber optic anemometer based on metal infiltrated microstructured optical fiber inscribed with Bragg grating

Jie Wang; Shaorui Gao; Zhengyong Liu; A. Ping Zhang; Yonghang Shen; Hwayaw Tam

doi:10.1117/12.2194536

28 September 2015 Fiber optic anemometer based on metal infiltrated microstructured optical fiber inscribed with Bragg grating

Jie Wang, Shaorui Gao, Zhengyong Liu, A. Ping Zhang, Yonghang Shen, Hwayaw Tam

Author Affiliations +

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96341M (2015) https://doi.org/10.1117/12.2194536
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

An all-fiber optical anemometer with high light-heat conversion efficiency by using an in-house microstructured optical fiber Bragg grating (MOFBG) is presented. Low-molten-temperature BiSnIn alloy was successfully infiltrated into 11- cm length of a six-hole microstructured optical fiber which was inscribed with a fibre Bragg grating (FBG) centered at ~848 nm. Light launched into the MOFBG was strongly absorbed by the metal to generate heat, while the FBG was utilized to monitor temperature change due to surrounding wind speed. The sensitivity of the laser-heated MOFBG anemometer was measured to be ~0.1 nm/(m/s) for wind speed ranged from 0.5 m/s to 2 m/s. The efficiency of the anemometer, defined as effective sensitivity per pump power, is 8.7 nm/(m/s*W).

Citation Download Citation

Jie Wang, Shaorui Gao, Zhengyong Liu, A. Ping Zhang, Yonghang Shen, and Hwayaw Tam "Fiber optic anemometer based on metal infiltrated microstructured optical fiber inscribed with Bragg grating", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96341M (28 September 2015); https://doi.org/10.1117/12.2194536

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