Sub-Nano-Strain Multiplexed Fiber Optic Sensor Array for Quasi-Static Strain Measurement

被引：24

作者：

Chen, Jiageng ^{[1
]}

Liu, Qingwen ^{[1
]}

Fan, Xinyu ^{[1
]}

He, Zuyuan ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Adv Opt Commun Syst & Networks, Shanghai 200240, Peoples R China

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2016年 / 28卷 / 21期

基金：

中国国家自然科学基金;

关键词：

Quasi-static strain sensing; p-phase-shifted fiber Bragg grating (p-PSFBG); time-division multiplexing (TDM); sub-nano-strain resolution; GRATING SENSORS;

D O I：

10.1109/LPT.2016.2592506

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This letter presents a high resolution multiplexed strain sensor for quasi-static strain measurement based on p-phase-shifted fiber Bragg gratings (p-PSFBGs). The sensor array is composed by four p-PSFBGs in parallel with different delay lines, and a time-division multiplexing scheme is proposed to interrogate the p-PSFBGs in turn. The Pound-Drever-Hall technique and the sideband interrogation method are employed to improve the resolution and the sampling rate. In the demonstrational experiment, three-channel quasi-static strain sensing is realized with a resolution better than 0.4 n epsilon and a sampling rate of 100 samples/s.

引用

页码：2311 / 2314

页数：4

共 16 条

[1] Static fiber-Bragg grating strain sensing using frequency-locked lasers [J].