A temperature-independent displacement sensor based on a fiber Bragg grating

Xiufeng Yang; Xinyong Dong; Chun-liu Zhao; Jun Hong Ng; Qizhen Peng; Xiaoqun Zhou; Chao Lu

doi:10.1117/12.623406

23 May 2005 A temperature-independent displacement sensor based on a fiber Bragg grating

Xiufeng Yang, Xinyong Dong, Chun-liu Zhao, Jun Hong Ng, Qizhen Peng, Xiaoqun Zhou, Chao Lu

Proceedings Volume 5855, 17th International Conference on Optical Fibre Sensors; (2005) https://doi.org/10.1117/12.623406
Event: 17th International Conference on Optical Fibre Sensors, 2005, Bruges, Belgium

Abstract

A temperature-independent displacement sensor is demonstrated using a chirped fiber grating and a specially designed cantilever. The 3-dB bandwidth of the chirped grating changes linearly with displacement and is independent to the temperature. Linear displacement response of 37.063mV/mm was obtained. By measuring the reflected light from the chirp grating, the displacement can be monitored directly. The sensor has potentially low cost due to its simple structure.

Citation Download Citation

Xiufeng Yang, Xinyong Dong, Chun-liu Zhao, Jun Hong Ng, Qizhen Peng, Xiaoqun Zhou, and Chao Lu "A temperature-independent displacement sensor based on a fiber Bragg grating", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); https://doi.org/10.1117/12.623406

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