传感技术学报2017，Vol.30Issue(7)：1011-1016,6.DOI:10.3969/j.issn.1004-1699.2017.07.007
一种对偏振敏感的光频域反射光纤布拉格光栅传感系统解调方案
A Polarization Sensitive Demodulation Scheme Based on Optical Frequency Domain Reflectometry in Fiber Bragg Grating Sensing System
摘要
Abstract
In order to solve the problem of transverse strain measurement in the Fiber Bragg Grating sensing system,a polarization sensitive demodulation scheme based on optical frequency domain reflectometry technique in quasi-distributed Fiber Bragg Grating sensing system is proposed,the information of transverse strain can be provided by tracking the Polarization Dependent Loss of the sensing system.The polarization characteristics of the uniform Fiber Bragg Grating in a quasi-distributed manner and the principle of the polarization sensitive demodulation system are analyzed,and the superiority of the method in the measurement of transverse strain is discussed in this paper.The spectral evolution of polarization dependent loss of the sensing system as a function of grating length and the birefringence is studied.Simulation results show that the proposed scheme can provide theoretical basis for the accurate measurement of transverse strain in a quasi-distributed Fiber Bragg Grating sensing system.关键词
光纤布拉格光栅/准分布式传感/光频域反射/偏振相关损耗Key words
Fiber Bragg Grating/quasi-distributed sensing/optical frequency domain reflectometry/Polarization Dependent Loss分类
信息技术与安全科学引用本文复制引用
段苛苛,时书丽..一种对偏振敏感的光频域反射光纤布拉格光栅传感系统解调方案[J].传感技术学报,2017,30(7):1011-1016,6.基金项目
辽宁大学科研基金(科技类)项目(LDQN2015002) （科技类）
