Dynamic tuning method for extinction ratio of long-distance fiber-optic sensing systems

Lin Wei1; Liu Bo1; Miao Kai1; Guo Peng1; Huang Xiang1; Ding Xiaoming2

doi:10.13756/j.gtxyj.2011.02.021

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Dynamic tuning method for extinction ratio of long-distance fiber-optic sensing systems

- Dynamic tuning method for extinction ratio of long-distance fiber-optic sensing systems
- Study on Optical communication Issue 2, Pages: 29-32(2011)
- 作者机构：
  
  1. 南开大学信息技术科学学院现代光学研究所
  2. 北京航空航天大学仪器科学与光电工程学院
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2011.02.021
  CLC： TP212.14
- Published：2011，
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[1]林炜,刘波,缪凯,郭澎,黄翔,丁晓铭.长距离光纤传感系统消光比动态调谐方法[J].光通信研究,2011(02):29-32.

Lin Wei1, Liu Bo1, Miao Kai1, et al. Dynamic tuning method for extinction ratio of long-distance fiber-optic sensing systems. [J]. (2):29-32(2011)
[1]林炜,刘波,缪凯,郭澎,黄翔,丁晓铭.长距离光纤传感系统消光比动态调谐方法[J].光通信研究,2011(02):29-32. DOI： 10.13756/j.gtxyj.2011.02.021.

Lin Wei1, Liu Bo1, Miao Kai1, et al. Dynamic tuning method for extinction ratio of long-distance fiber-optic sensing systems. [J]. (2):29-32(2011) DOI： 10.13756/j.gtxyj.2011.02.021.

摘要

光纤干涉仪的消光比在很大程度上决定了干涉型光纤传感系统的灵敏度。文章从理论上分析了基于干涉结构的分布式光纤振动传感系统的消光比影响因素

指出偏振态是影响系统消光比的主要原因。在此基础上

设计并实现了一种性价比极高的在线偏振调节器。通过对偏振态的调节

实现了长距离分布式光纤振动传感系统消光比的动态均衡。

Abstract

The extinction ratio of a fiber-optic interferometer determines to a great extent the sensitivity of the interferometric fiber-optic sensing system.This article theoretically analyzes the factors affecting the extinction ratio of interference structure-based distributed fiber-optic vibration sensing systems and points out that polarization state is the main cause affecting the system extinction ratio.On this basis

a high cost-performance online polarization controller is designed and implemented.By tuning the polarization state

the dynamic equilibrium of the extinction ratio in long-distance distributed fiber-optic vibration sensing system is achieved.

关键词

长距离光纤传感系统偏振控制器消光比

Keywords

long distancefiber-optic sensing systempolarization controllerextinction ratio

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State Key Laboratory of Advanced Optical Communication System and Networks, Shanghai Jiao Tong University

School of Communication and Information Engineering,Shanghai University

Lab.of Film Electronics and Communication Devices of Tianjin

Tianjin University of Technology

Department of Computer and Communication Engineering

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