Temperatute-independent FBG displacement measurement based on bandwidth modulation and optical power detection

Tuan Guo; Qida Zhao; Hong Kang; Junfeng Lv; Lifang Xue; Shuhong Li; Bo Dong; Hong Gu; Guiling Huang; Xiaoyi Dong

doi:10.1117/12.726481

5 March 2007 Temperatute-independent FBG displacement measurement based on bandwidth modulation and optical power detection

Tuan Guo, Qida Zhao, Hong Kang, Junfeng Lv, Lifang Xue, Shuhong Li, Bo Dong, Hong Gu, Guiling Huang, Xiaoyi Dong

Author Affiliations +

Proceedings Volume 6595, Fundamental Problems of Optoelectronics and Microelectronics III; 65953R (2007) https://doi.org/10.1117/12.726481
Event: Fundamental Problems of Optoelectronics and Microelectronics III, 2006, Harbin, China

Abstract

A technique for temperature-insensitive displacement measurement using a single fiber Bragg grating (FBG) based on strain-gradient-induced reflection spectrum bandwidth modulation and optical power detection is demonstrated. Linear displacement measurement up to 20mm with displacement resolution of 0.054 mm and thermal stability of < 0.8 % F.S. for temperature range from 20 °C to 80 °C are respectively achieved without any temperature compensation.i

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Tuan Guo, Qida Zhao, Hong Kang, Junfeng Lv, Lifang Xue, Shuhong Li, Bo Dong, Hong Gu, Guiling Huang, and Xiaoyi Dong "Temperatute-independent FBG displacement measurement based on bandwidth modulation and optical power detection", Proc. SPIE 6595, Fundamental Problems of Optoelectronics and Microelectronics III, 65953R (5 March 2007); https://doi.org/10.1117/12.726481

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KEYWORDS

Fiber Bragg gratings

Temperature metrology

Modulation

Reflection

Refractive index

Sensors

Signal detection

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