锥形光纤光栅传感特性研究

J4 ›› 2018, Vol. 35 ›› Issue (2): 246-251.

锥形光纤光栅传感特性研究

涂兴华, 耿胜各

南京邮电大学光电工程学院光电传感工程研究中心，江苏南京 210023

收稿日期:2016-08-16 修回日期:2016-09-05 出版日期:2018-03-28 发布日期:2018-03-30
通讯作者: 涂兴华（1976—），安徽阜南人，博士，副教授，主要从事光纤通信系统及器件的研究。E-mail：tuxh@njupt.edu.cn
基金资助:
Supported by National Natural Science Foundation of China(国家自然科学基金,11547031), Open Fundation of State Key Laboratory of Advanced Optical Communication Systems and Networks of Shanghai Jiao Tong University of China (区域光纤通信网与新型光通信系统国家重点实验室开放基金, 2015GZKF03006) , Research Center of Optical Communications Engineering & Technology of Jiangsu Province(江苏省光通信工程技术研究中心资助项目, ZSF0201), Nanjing University of Posts and Telecommunications School Foudation(南京邮电大学校级科研基金，NY217111)

Sensing characteristics of tapered fiber grating

TU Xinghua， GENG Shengge

Research Center of Optoelectronics Sensing Engineering, School of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China

Received:2016-08-16 Revised:2016-09-05 Published:2018-03-28 Online:2018-03-30

摘要/Abstract

摘要： 对锥形光纤光栅（TFG）的传感特性进行了理论分析，基于传输矩阵法分析了应力与温度对不同锥角TFG反射谱特性的影响。研究表明：随着应力的增大，TFG中心波长向长波长移动，反射带宽展宽。中心波长、反射带宽均与所施加的应力成线性关系。锥度越大，中心波长、反射带宽的应变灵敏度越高；温度逐渐升高时中心波长向长波长移动，反射带宽不变。增大锥度，中心波长、反射带宽均不变。TFG反射带宽与温度无关，只依赖于应力大小，利用这一特性可以解决温度与应力交叉敏感的问题。

关键词: 纤维与波导光学；锥形光栅；传输矩阵；传感特性

Abstract: The sensing properties of tapered fiber grating (TFG) are theoretically analyzed. The influence of stress and temperature on characteristics of TFG reflection spectra of different taper angles is analyzed based on transfer matrix method. Results show that the center wavelength shifts to long wavelength and the reflection bandwidth is broadened with the increasing of stress. The center wavelength and reflection bandwidth are all linear with the applied stress. The greater the taper angle is, the higher the stress sensitivity of center wavelength and reflection bandwidth will be. The center wavelength shifts to long wavelength when the temperature rises gradually, and the reflection bandwidth is constant. The center wavelength and reflection bandwidth are unchanged when the taper degree increases. The reflection bandwidth of TFG is temperature independent, and only dependent on the stress. The characteristics can be used to solve the cross-sensitivity problem of temperature and stress.

Key words: fiber and waveguide optics；tapered fiber grating; transfer matrix; sensing characteristics

中图分类号:

TN253

涂兴华, 耿胜各. 锥形光纤光栅传感特性研究[J]. J4, 2018, 35(2): 246-251.

TU Xinghua， GENG Shengge. Sensing characteristics of tapered fiber grating[J]. J4, 2018, 35(2): 246-251.

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