A real-time inclinometer based on an etched fiber Bragg grating connected to hollow-core fiber

Qiang Zhang; Tao Zhu; Fengyang Yin; Kin Seng Chiang; Ming Deng

doi:10.1117/12.2059071

2 June 2014 A real-time inclinometer based on an etched fiber Bragg grating connected to hollow-core fiber

Qiang Zhang, Tao Zhu, Fengyang Yin, Kin Seng Chiang, Ming Deng

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91579U (2014) https://doi.org/10.1117/12.2059071
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

We propose and experimentally demonstrate a low-cost, compact temperature-insensitive inclinometer, which is constructed by connecting a chemically etched fiber Bragg grating to a hollow-core fiber filled with tin. The optical power reflected from the grating is linearly proportional to the inclination angle of the grating and can provide a real-time measure of the inclination angle. Our experimental sensor can measure the inclination angle from 0° to 20° with an uncertainty of ± 0.35º and negligible temperature interference.

Citation Download Citation

Qiang Zhang, Tao Zhu, Fengyang Yin, Kin Seng Chiang, and Ming Deng "A real-time inclinometer based on an etched fiber Bragg grating connected to hollow-core fiber", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91579U (2 June 2014); https://doi.org/10.1117/12.2059071

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