Simultaneous measurement of temperature and static strain using FBG Fabry-Perot interferometer in polarization maintaining fiber

R. Uchimura; A. Wada; S. Tekuramori; M. Takeuchi; O. Tukida; S. Tanaka; N. Takahashi

doi:10.1117/12.2058842

2 June 2014 Simultaneous measurement of temperature and static strain using FBG Fabry-Perot interferometer in polarization maintaining fiber

R. Uchimura, A. Wada, S. Tekuramori, M. Takeuchi, O. Tukida, S. Tanaka, N. Takahashi

Author Affiliations +

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91570U (2014) https://doi.org/10.1117/12.2058842
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

A Fiber Bragg Gratings(FBG) have been used as a sensor head for measurement of temperature and static strain. However, a standard FBG sensor, which is constructed on single-mode fiber, cannot simultaneously measure both temperature and static strain since the sensor has cross-sensitivity between them. The cross-sensitivity problem can be solved by using an FBG constructed on a polarization maintaining fiber(PM-FBG) instead of a standard FBG. In this paper, we report improvement on the sensing resolution for the simultaneous measurement of temperature and static strain. An Fabry-Perot interferometer constructed with PM-FBG(PM-FBG-FPI) is introduced as a sensor head. The fine structure of an PM-FBG-FPI reflection spectrum enables high resolution detection of wavelength shifts. The resulting high resolution measurement is demonstrated experimentally.

Citation Download Citation

R. Uchimura, A. Wada, S. Tekuramori, M. Takeuchi, O. Tukida, S. Tanaka, and N. Takahashi "Simultaneous measurement of temperature and static strain using FBG Fabry-Perot interferometer in polarization maintaining fiber", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91570U (2 June 2014); https://doi.org/10.1117/12.2058842

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