Chinese Optics Letters, 2004, 2 (10): 10562, Published Online: Jun. 6, 2006  

Active temperature compensation design of sensor with fiber gratings Download: 799次

Author Affiliations
1 Institue of Modern Optics, Nankai University, Tianjin 300071
2 University of Science and Technology of Suzhou, Suzhou 215011
Abstract
A technique for compensation of temperature effects in fiber grating sensors is reported. For strain sensors and other sensors related to strain such as electromagnetic sensors, a novel structure is designed, which uses two fiber Bragg gratings (FBGs) as strain differential sensor and has temperature effects cancelled. Using this technique, the stress sensitivity has been amplified and gets up to 0.226 nm/N, the total variation in wavelength difference within the range of 3-45 oC is 0.03 nm, 1/14 of the uncompensated FBG. The structure can be used in the temperature-insensitive static strain measurement and minor-vibration measurement.

Xingfa Dong, Yonglin Huang, Li Jiang, Guiyun Kai, Xiaoyi Dong. Active temperature compensation design of sensor with fiber gratings[J]. Chinese Optics Letters, 2004, 2(10): 10562.

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