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Fast and accurate full-spectrum interrogation for fiber Fabry–Perot interferometric sensor consisting of Bragg gratings in polarization maintaining fiber

Authors :
Satoshi Tanaka
Nobuaki Takahashi
Atsushi Wada
Source :
Japanese Journal of Applied Physics. 57:102501
Publication Year :
2018
Publisher :
IOP Publishing, 2018.

Abstract

A measurement method for many sharp transmittance peaks of a fiber Fabry–Perot interferometer (FPI) with high resolution in a short time is proposed. Using the proposed method, temperature and strain dependences of an FPI constructed using polarization maintaining type fiber Bragg grating (PM-FBG-FPI) are evaluated. By detecting wavelength shift occurring in many peaks of a PM-FBG-FPI with high resolution, it is possible to quantitatively evaluate a slight shift coefficient difference due to the difference in resonance order of each peak. Simultaneous measurement resolution of temperature and strain by the PM-FBG-FPI sensor is also improved by using the average value of the wavelength shift detected at many peaks. The resulting high-resolution measurements are demonstrated experimentally.

Details

ISSN :
13474065 and 00214922
Volume :
57
Database :
OpenAIRE
Journal :
Japanese Journal of Applied Physics
Accession number :
edsair.doi...........9855aa1d1fd6ec9d5b98dac8538253d4
Full Text :
https://doi.org/10.7567/jjap.57.102501