Simultaneous multi-point measurement of strain and temperature utilizing Fabry-Perot interferometric sensors composed of low reflective fiber Bragg gratings in a polarization-maintaining fiber | Zendy

Quoc Hung Bui | Zendy; Atsushi Wada | Zendy; Koken Fukushima | Zendy; Koki Nakaya | Zendy; Manuel Guterres Soares | Zendy; Satoshi Tanaka | Zendy

Open Access

Simultaneous multi-point measurement of strain and temperature utilizing Fabry-Perot interferometric sensors composed of low reflective fiber Bragg gratings in a polarization-maintaining fiber

Author(s) -

Quoc Hung Bui,

Atsushi Wada,

Koken Fukushima,

Koki Nakaya,

Manuel Guterres Soares,

Satoshi Tanaka

Publication year - 2020

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.389844

Subject(s) - fiber bragg grating , optics , materials science , fabry–pérot interferometer , polarization maintaining optical fiber , fiber optic sensor , interferometry , birefringence , phosfos , polarization (electrochemistry) , optical fiber , long period fiber grating , photonic crystal fiber , optoelectronics , wavelength , physics , chemistry

A fiber Bragg grating (FBG)-based multi-point sensing system for the simultaneous measurement of strain and temperature is proposed, with a Fabry-Perot interferometer (FPI) consisting of low reflective FBGs inscribed inside a polarization-maintaining (PM) fiber is introduced as a sensor head. A multi-point sensing method with high dynamic range and short measurement time can be realized by analyzing the reflection spectrum of low reflective FBG-FPIs, and a simultaneous measurement of strain and temperature using two orthogonal polarization modes is enabled by the high birefringence of a PM fiber. An experimental demonstration of multi-point measurement utilizing the proposed system is reported.

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