Effective dual-parameter sensor employing a single fibre Bragg grating demodulated by a metrological grating

Fang Xie; Ming Song

doi:10.1117/12.678588

23 February 2006 Effective dual-parameter sensor employing a single fibre Bragg grating demodulated by a metrological grating

Fang Xie, Ming Song

Author Affiliations +

Proceedings Volume 6150, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 615033 (2006) https://doi.org/10.1117/12.678588
Event: 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2005, Xian, China

Abstract

A novel technology for simultaneous and independent measurement of dual parameters is proposed and experimented. The length of a single fibre Bragg grating (FBG) is divided into two parts. The temperature variation and the strain are able to be measured independently and simultaneously, and the thermal effect can be erased. A metrological grating is employed to read out the output of the measurement system. The resolution of the measurement of strain can reach to 0.5μ strain, which corresponds to 0.04°C of temperature variation.

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Fang Xie and Ming Song "Effective dual-parameter sensor employing a single fibre Bragg grating demodulated by a metrological grating", Proc. SPIE 6150, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 615033 (23 February 2006); https://doi.org/10.1117/12.678588

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