Temperature-independent measurement of displacement based on the chirp tuning of a fiber grating

Xiufeng Yang; Xin Yong Dong; Chunliu Zhao; JunHong Ng; Qizhen Peng; Xiaoqun Zhou; Chao Lu

doi:10.1117/1.1948382

1 July 2005 Temperature-independent measurement of displacement based on the chirp tuning of a fiber grating

Xiufeng Yang, Xin Yong Dong, Chunliu Zhao, JunHong Ng, Qizhen Peng, Xiaoqun Zhou, Chao Lu

Author Affiliations +

Optical Engineering, Vol. 44, Issue 7, 074401 (July 2005). https://doi.org/10.1117/1.1948382

Abstract

We report the temperature-independent measurement of displacement based on the chirp tuning of a fiber grating and a specially designed cantilever. The 3-dB bandwidth of the chirped grating changes linearly with displacement and is independent of the temperature. The displacement can be monitored directly by measuring the reflected light from the chirp grating. A linear displacement response of 37.063 mV/mm was obtained. The fluctuation of the output signal is less than 5% for a temperature range from 20 to 60°C without any temperature compensation technique. The sensor has potentially low cost due to its simple structure.

©(2005) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Xiufeng Yang, Xin Yong Dong, Chunliu Zhao, JunHong Ng, Qizhen Peng, Xiaoqun Zhou, and Chao Lu "Temperature-independent measurement of displacement based on the chirp tuning of a fiber grating," Optical Engineering 44(7), 074401 (1 July 2005). https://doi.org/10.1117/1.1948382

Published: 1 July 2005

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