保偏光纤转轴熔接Sagnac干涉环的光学游标效应及温度传感器

赵春柳; 丁振名; 吴彬青

doi:10.3788/OPE.20172509.2283

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保偏光纤转轴熔接Sagnac干涉环的光学游标效应及温度传感器

现代应用光学 | 更新时间：2020-08-13

- 保偏光纤转轴熔接Sagnac干涉环的光学游标效应及温度传感器
- Vernier effect based on optical fiber Sagnac interference loop with two angle shift spliced polarization maintaining fibers and its application on temperature sensor
- 光学精密工程 2017年25卷第9期页码：2283-2291
- 作者机构：
  
  中国计量大学光学与电子科技学院, 浙江杭州 310018
- 作者简介：
  
  [ "赵春柳(1973-), 女, 内蒙古呼伦贝尔人, 博士, 教授, 1996年于内蒙古大学获得学士学位, 1999年、2002年于南开大学分别获得硕士、博士学位, 主要从事光纤传感、光纤通信、光子晶体光纤、光纤激光器放大器和光纤光栅等光纤相关领域的工作.E-mail:clzhao@cjlu.edu.cn" ]
  [ "丁振名(1993-), 男, 辽宁朝阳人, 硕士研究生, 2015年于长沙理工大学获得学士学位, 主要从事光纤激光器、光纤传感方面的研究.E-mail:1787113755@qq.com" ]
- 基金信息：
  
  浙江省自然科学基金资助项目(LY17F050010)
- DOI：10.3788/OPE.20172509.2283
  中图分类号： TN253;S951.4
- 收稿日期：2017-04-17，
  
  录用日期：2017-5-16，
  
  纸质出版日期：2017-09-25
- 稿件说明：
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赵春柳, 丁振名, 吴彬青. 保偏光纤转轴熔接Sagnac干涉环的光学游标效应及温度传感器[J]. 光学精密工程, 2017,25(9):2283-2291.

Chun-liu ZHAO, Zhen-ming DING, Bin-qing WU. Vernier effect based on optical fiber Sagnac interference loop with two angle shift spliced polarization maintaining fibers and its application on temperature sensor[J]. Optics and precision engineering, 2017, 25(9): 2283-2291.
赵春柳, 丁振名, 吴彬青. 保偏光纤转轴熔接Sagnac干涉环的光学游标效应及温度传感器[J]. 光学精密工程, 2017,25(9):2283-2291. DOI： 10.3788/OPE.20172509.2283.

Chun-liu ZHAO, Zhen-ming DING, Bin-qing WU. Vernier effect based on optical fiber Sagnac interference loop with two angle shift spliced polarization maintaining fibers and its application on temperature sensor[J]. Optics and precision engineering, 2017, 25(9): 2283-2291. DOI： 10.3788/OPE.20172509.2283.

摘要

为了实现高灵敏度的温度传感

通过在基于保偏光纤Sagnac干涉仪的Sagnac环内增加一段保偏光纤

控制两段保偏光纤快轴熔接角度接近45°

设计并制造了保偏光纤转轴熔接Sagnac干涉环结构。在理论上通过Jones矩阵推导了保偏光纤转轴熔接Sagnac干涉环的干涉谱公式

基于仿真分析研究了主要参数对保偏光纤转轴熔接Sagnac干涉环输出特性的影响。仿真结果表明

保偏光纤转轴熔接Sagnac干涉环实现了光学游标效应

两段保偏光纤的平均长度、两段保偏光纤的长度差分别影响保偏光纤转轴熔接Sagnac干涉环输出干涉谱的波长间隔和包络周期；在实验中

将保偏光纤转轴熔接Sagnac干涉环应用在光纤温度传感器中。实验结果表明

在2 cm的感温区域

保偏光纤转轴熔接Sagnac干涉环温度传感器的灵敏度就达到了-2.44 nm/℃

是普通Sagnac干涉环温度传感器（-0.163 nm/℃）的14.97倍。

Abstract

An optical fiber Sagnac interference loop with two angle shift spliced polarization maintaining fibers was designed and fabricated to realize high-sensitivity temperature sensing. In the optical fiber Sagnac loop

two sections of polarization maintaining fibers were spliced with an intersection angle of 45° between their fast axes. The interference spectrum formula of the Sagnac interference loop by the Jones matrix was deduced theoretically. The influence of main parameters of the formula on the output characteristics of the Sagnac interference loop was studied in simulation. The simulation results show that vernier effect can be achieved in the optical fiber Sagnac interference loop with two angle shift spliced polarization maintaining fibers

of which the average length and the length difference affect wavelength intervals and envelope periods of output interference spectra of the Sagnac interference loop

respectively. In addition

the optical fiber Sagnac interference loop with two angle shift spliced polarization maintaining fibers was applied as a fiber temperature sensor experimentally. The results show that the sensitivity of the proposed temperature sensor based on Sagnac interference loop is -2.44 nm/℃ within 2 cm temperature zone

which is 14.97 times as compared with that (-0.163 nm/℃) of ordinary Sagnac loop sensors without vernier effect.

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references

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