基于乙醇填充的光子晶体光纤温度传感器

doi:10.3969/j.issn.1005-3026.2015.10.001

东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (10): 1369-1373.DOI: 10.3969/j.issn.1005-3026.2015.10.001

• 信息与控制 • 下一篇

基于乙醇填充的光子晶体光纤温度传感器

高朋¹，赵勇^{1, 2}，李晋¹

(1. 东北大学信息科学与工程学院，辽宁沈阳110819； 2. 东北大学流程工业综合自动化国家重点实验室，辽宁沈阳110819)

收稿日期:2014-09-15 修回日期:2014-09-15 出版日期:2015-10-15 发布日期:2015-09-29
通讯作者: 高朋
作者简介:高朋(1981-)，男，辽宁盘锦人，东北大学博士研究生，沈阳师范大学副教授；赵勇(1973-)，男，辽宁沈阳人，东北大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目(61273059，61203206)；辽宁省自然科学基金资助项目(2013020010).

Temperature Sensor with Photonic Crystal Fiber Filled with Ethanol as Probe

GAO Peng¹， ZHAO Yong^1,2， LI Jin¹

School of Information Science & Engineering， Northeastern University， Shenyang 110819， China.

Received:2014-09-15 Revised:2014-09-15 Online:2015-10-15 Published:2015-09-29
Contact: ZHAO Yong
About author:-
Supported by:
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摘要/Abstract

摘要： 提出一种具有独立探头的反射式高双折射光子晶体光纤环镜结构，此结构利用乙醇的热光效应对光子晶体光纤双折射线性调制，双折射的改变引起Sagnac干涉系统光程差的变化，并导致光谱强度在某一温度区间随温度线性变化，实现了温度的高灵敏度测量.此结构克服了传统的环内结构易受外界扰动的缺点，并且使其在实际应用中搭建分布式传感系统成为可能.实验验证了乙醇的折射率随温度的线性变化规律，灵敏度为4.45e-4/℃；验证了填充乙醇后光子晶体光纤双折射与温度的变化规律，灵敏度为0.015625/℃；验证了在20~40℃之间，输出光强随温度的变化规律，灵敏度为0.0031mW/℃.利用琼斯矩阵理论论证了干涉光谱的形成机理，得到干涉谱方程.

关键词: 光纤环镜, 光纤传感器, 温度传感器, 高双折射光子晶体光纤, 乙醇

Abstract: A high birefringence photonic crystal fiber(HiBi-PCF) loop mirror structure was proposed with a reflective independent probe， in which the thermo-optic effect of ethanol was used to modulate linearly photonic crystal fiber birefringence. The Sagnac interference optical path difference was changed by the birefringence variations， resulting in the linearly changes of spectral intensity in a certain temperature region. Based on the above principle， high sensitive temperature measurement could be implemented. The structure improves the shortcoming of the traditional ring inner structure affected by external disturbance， and makes it possible to build a distributed sensing system in practical application. The experimental results showed that the refractive index of ethanol changes versus the measured temperature linearly with the sensitivity of 4.45e-4/℃. The birefringence change rule of ethanol-filled HiBi-PCF with temperature was also indicated with the sensitivity of 0.015625/℃. In addition， the change rule of output light intensity with temperature between 20~40℃ was tested with the sensitivity of 0.0031mW/℃. The formation mechanism of interference spectrum was demonstrated by using the Jones matrix theory， with the interference spectrum equation obtained.

Key words: fiber loop mirror, optical fiber sensor, temperature sensor, HiBi-PCF(high birefringence photonic crystal fibers), ethanol

中图分类号:

TP212.11

高朋，赵勇，李晋. 基于乙醇填充的光子晶体光纤温度传感器[J]. 东北大学学报:自然科学版, 2015, 36(10): 1369-1373.

GAO Peng， ZHAO Yong， LI Jin. Temperature Sensor with Photonic Crystal Fiber Filled with Ethanol as Probe[J]. Journal of Northeastern University:Natural Science, 2015, 36(10): 1369-1373.

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基于乙醇填充的光子晶体光纤温度传感器

Temperature Sensor with Photonic Crystal Fiber Filled with Ethanol as Probe

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