Micro-fiber inclinometer based on deformation of FBG

Qiang Zhang; Tao Zhu; Kin Seng Chiang

doi:10.1117/12.2034187

15 October 2013 Micro-fiber inclinometer based on deformation of FBG

Qiang Zhang, Tao Zhu, Kin Seng Chiang

Proceedings Volume 8924, Fourth Asia Pacific Optical Sensors Conference; 89242U (2013) https://doi.org/10.1117/12.2034187
Event: Asia Pacific Optical Sensors Conference 2013, 2013, Wuhan, China

Abstract

We propose and experimentally demonstrate a compact in-line micro-fiber inclinometer based on deformation of FBG, where the micro-fiber FBG beam is fabricated by special chemical etching method and the fiber pendulum is gained by splicing a section of hollow core fiber filling with tin to the end of the micro-fiber beam. The experiment results show that as the inclination angle increasing from0⁰ to 20⁰, the increments of the transmission loss and Bragg wavelength of the sensor are 1.81dB, and 0.035nm, respectively. Simultaneously, the change of the bandwidth at -25dBm increases linearly from 0.86nm to 1.048nm and the bandwidth sensitivity to inclination angle is 7.24pm/deg. On the other hand, temperature cross issue is solved by monitoring the bandwidth at -25dBm because the bandwidth sensitivity to temperature is 0.089pm/℃from 20℃ to 200℃.

Citation Download Citation

Qiang Zhang, Tao Zhu, and Kin Seng Chiang "Micro-fiber inclinometer based on deformation of FBG", Proc. SPIE 8924, Fourth Asia Pacific Optical Sensors Conference, 89242U (15 October 2013); https://doi.org/10.1117/12.2034187

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