1 July 2005 Temperature-independent measurement of displacement based on the chirp tuning of a fiber grating
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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)
Xiufeng Yang, Xiufeng Yang, Xin Yong Dong, Xin Yong Dong, Chunliu Zhao, Chunliu Zhao, JunHong Ng, JunHong Ng, Qizhen Peng, Qizhen Peng, Xiaoqun Zhou, Xiaoqun Zhou, Chao Lu, 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 . Submission:
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