Research on temperature independent FBG obliquity sensor

Ye Cao; Xiu-rong Ma; Wei Fang; Gui-yun Kai; Xiao-yi Dong

doi:10.1117/12.725890

5 March 2007 Research on temperature independent FBG obliquity sensor

Ye Cao, Xiu-rong Ma, Wei Fang, Gui-yun Kai, Xiao-yi Dong

Proceedings Volume 6595, Fundamental Problems of Optoelectronics and Microelectronics III; 65952N (2007) https://doi.org/10.1117/12.725890
Event: Fundamental Problems of Optoelectronics and Microelectronics III, 2006, Harbin, China

Abstract

A novel FBG obliquity sensor is proposed. In this sensor one half of the FBG is stick to the fixed end of a cantilever, and the other half remains at freedom state. The difference of the center reflection wavelength of the two half of the FBG changes linearly with the sine of the obliquity from 0284 to 0393(linear degree 0.9956) . In this sensor cross sensitivity is alSo eliminated by the different strain coherent of the two half FBG. If combined with another sensor of the same structure, the sensing of two dimensional obliquity is achieved. The research demonstrates that the new sensor system has the advantages of simple and compact structure, easy manipulation, low cost, light weight, etc.

Citation Download Citation

Ye Cao, Xiu-rong Ma, Wei Fang, Gui-yun Kai, and Xiao-yi Dong "Research on temperature independent FBG obliquity sensor", Proc. SPIE 6595, Fundamental Problems of Optoelectronics and Microelectronics III, 65952N (5 March 2007); https://doi.org/10.1117/12.725890

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