High sensitive fiber-optic sensor for curvature and temperature detecting simultaneously

LIU Li; WU Guanquan; QI Shikai; ZENG Wei; MAO Lili

doi:10.13873/j.1000-9787(2019)10-0064-03

Chinese

您当前的位置：

首页 >

文章列表页 >

High sensitive fiber-optic sensor for curvature and temperature detecting simultaneously

更新时间：2025-09-11

- High sensitive fiber-optic sensor for curvature and temperature detecting simultaneously
- Issue 10, Pages: 64-66+69(2019)
- 作者机构：
  
  九江学院电子工程学院
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-9787(2019)10-0064-03
  CLC： TP212
- Published：2019
- 稿件说明：
移动端阅览
LIU Li, WU Guanquan, QI Shikai, et al. High sensitive fiber-optic sensor for curvature and temperature detecting simultaneously[J]. 2019, (10): 64-66+69.
DOI：

LIU Li, WU Guanquan, QI Shikai, et al. High sensitive fiber-optic sensor for curvature and temperature detecting simultaneously[J]. 2019, (10): 64-66+69. DOI： 10.13873/j.1000-9787(2019)10-0064-03.

摘要

提出了一种基于光纤模式干涉仪的同时测量曲率和温度的传感器。采用多模—光纤锥—多模光纤熔接方式形成光纤模式干涉仪

多模光纤（MMF）作为耦合波导长度设置为半自聚焦长度

将纤芯中大部分能量耦合至包层中

以此激发高阶包层模式

对中间单模光纤（SMF）进行熔融拉锥处理

进一步激发高阶包层模式并控制包层损耗

增加干涉条纹消光比

从而增加传感器的灵敏度。通过检测干涉谷值波长以及干涉谷值功率的变化

实现对曲率和温度的高灵敏度同时探测

设计的光纤模式干涉仪的消光比高达40 dB

曲率灵敏度高达141.63 dB/m

-1

温度灵敏度为71.43 pm/℃。

Abstract

A sensor based on fiber-optic mode interferometers to measure curvature and temperature simultaneously is proposed.The fiber-optic mode interferometers are fabricated by splicing the multimode fiber-single mode fiber taper-multimode fiber structure.In order to excite the higher clad modes

the multimode fiber（MMF）is employed as coupler waveguide with a half re-imaging length of 5.5 mm to couple the most of energy to cladding.And the intermediate single mode fiber（SMF）is fused and tapered to further excite the higher order cladding modes and control the propagation loss of clad modes

which can increase the fringe contrast ratio of the mode interferometers and improve the sensitivity.By tracing the variations of th

e dip wavelength and optical intensity

the curvature and temperature can be measured simultaneously with highly sensitivity.The maximum extinction ratio of modal interferences pattern can reach 40 dB.The sensor exhibits a very high intensity sensitivity about 141.63 dB/m

-1

in the curvature sensing experiment and a wavelength sensitivity about 71.43 pm/℃ in the temperature sensing experiment.

关键词

Keywords

references

Views

371

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Two-channel photonic crystal fiber temperature sensor based on surface plasmon resonance

Study on temperature sensing characteristics based on π-PSFBG

FBG sensor simultaneous discriminating measurement of temperature and pressure applied in oil and gas pipeline

Experimental study on distributed optical fiber temperature sensing and measurement system based on BOTDA

Study on the embedment encapsulation technique of epoxy resin mixed with toughening agent of FBG

Related Author

ZHANG Xiangjun

WEI Fanghao

TIAN Jing

HOU Meijiang

FU Haiwei

CHENG Yiwei

DING wei

FAN Xiaoyang

Related Institution

School of Information and Control Engineering,China University of Mining and Technology

Collage of Physics,Guizhou University

Shaanxi Key Laboratory of Measurement and Control Technology for Oil and Gas wells,School of Science,Xi’an Shiyou University

Key Laboratory of Photoelectricity Gas & Oil Logging and Detecting of Ministry of Education,Xi’an Shiyou University

Department of Civil Engineering,Nanjing University of Aeronautics and Astronautics

⁰