基于Sagnac干涉仪的光纤长度测量方法  

Fiber Length Measurement Method Based on Sagnac Interferometer

作　　者：郑祥亮 孙权社[1] 韩忠[1] 刘志明[1] 赵发财 

机构地区：[1]中国电子科技集团公司第四十一研究所计量站,山东青岛266555

出　　处：《光学学报》2017年第1期68-73,共6页Acta Optica Sinica

基　　金：国防军工技术基础科研项目(J312013A002)

摘　　要：新一代光纤传感系统对光纤长度测量精度的要求越来越高,因此提出了一种基于Sagnac干涉仪的光纤长度测量方法,介绍了该测量方法的基本原理和实验装置,并进行了不同长度光纤的测量实验,研究了光源偏振态和光纤扰动对测量结果的影响。结果表明,所提方法的测量精度可以达到厘米量级,测量范围可以达到1~10km。The measurement accuracy requirement for fiber length is higher and higher in the new generation fiber sensing system.A fiber length measurement method based on Sagnac interferometer is proposed.The basic principle and the experimental setup of the proposed method are introduced.Experiments of fiber length measurement are conducted.The influences of polarization state of light source and fiber disturbance on measurement results are verified.Results show that the measurement accuracy of the proposed method can reach centimeter scale and the measurement range is from 1km to 10 km.

关 键 词：光纤光学 光纤长度 干涉测量 偏振态 测量精度 

分 类 号：TN247[电子电信—物理电子学]