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Proceedings Paper

Fiber optic anemometer based on metal infiltrated microstructured optical fiber inscribed with Bragg grating
Author(s): Jie Wang; Shaorui Gao; Zhengyong Liu; A. Ping Zhang; Yonghang Shen; Hwayaw Tam
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Paper 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).

Paper Details

Date Published: 28 September 2015
PDF: 4 pages
Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96341M (28 September 2015); doi: 10.1117/12.2194536
Show Author Affiliations
Jie Wang, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Zhejiang Uiniv. (China)
Shaorui Gao, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Zhengyong Liu, The Hong Kong Polytechnic Univ. (Hong Kong, China)
A. Ping Zhang, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Yonghang Shen, Zhejiang Univ. (China)
Hwayaw Tam, The Hong Kong Polytechnic Univ. (Hong Kong, China)


Published in SPIE Proceedings Vol. 9634:
24th International Conference on Optical Fibre Sensors
Hypolito José Kalinowski; José Luís Fabris; Wojtek J. Bock, Editor(s)

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