Open AccessHigh-resolution and large-dynamic-range temperature sensor using fiber Bragg grating Fabry-Pérot cavity
Author(s) -
Gang Li,
Lanting Ji,
Guoqiang Li,
Juan Su,
Chi Wu
Publication year - 2021
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.426398
Subject(s) - fiber bragg grating , fabry–pérot interferometer , materials science , optics , temperature measurement , atmospheric temperature range , fiber optic sensor , dynamic range , fiber laser , optoelectronics , optical fiber , laser , physics , quantum mechanics , meteorology
A high-resolution and large-dynamic-range temperature sensor adopting a pair of fiber Bragg grating as Fabry-Pérot cavity (FBG-FP) and laser frequency dither locking method is proposed and experimentally demonstrated. This sensor exhibits a temperature resolution of 7×10 -4 °C and a dynamic range of ∼46 °C. It is especially useful for applications where very small temperature changes need to be detected, such as deep ocean temperature measurement.