Simultaneous measurement of vibration and temperature using a Fabry-Perot interferometer in polarization maintaining fiber and laser diodes

Atsushi Wada; Satoshi Tanaka; Nobuaki Takahashi

doi:10.1117/12.2263200

23 April 2017 Simultaneous measurement of vibration and temperature using a Fabry-Perot interferometer in polarization maintaining fiber and laser diodes

Atsushi Wada, Satoshi Tanaka, Nobuaki Takahashi

Author Affiliations +

Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 1032326 (2017) https://doi.org/10.1117/12.2263200
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

Abstract

High-resolution simultaneous measurement of vibration and temperature using an optical fiber sensor is presented. Strain and temperature can be measured simultaneously by using two types of reflection spectra of a Fabry-Perot interferometer consisted of fiber Bragg gratings in a polarization maintaining fiber. The fine structure of reflection spectrum of the interferometer, i.e. PM-FBG-FPI, enables high-resolution detection of wavelength shifts. In order to measure solid vibration, we present a fast interrogation method using current modulation of a laser diode for PM-FBG-FPI sensors. The resulting fast measurement is demonstrated experimentally.

Citation Download Citation

Atsushi Wada, Satoshi Tanaka, and Nobuaki Takahashi "Simultaneous measurement of vibration and temperature using a Fabry-Perot interferometer in polarization maintaining fiber and laser diodes", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032326 (23 April 2017); https://doi.org/10.1117/12.2263200

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