Strain sensor based on coaxial photonic band gap crystal

SHI Peng-fei; GAO Ren-jing; LIU Shu-tian

doi:10.3788/OPE.20152304.0956

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Strain sensor based on coaxial photonic band gap crystal

更新时间：2020-08-13

- Strain sensor based on coaxial photonic band gap crystal
- Optics and Precision Engineering Vol. 23, Issue 4, Pages: 956-964(2015)
- 作者机构：
  
  大连理工大学运载工程与力学学部工业装备结构分析国家重点实验室,辽宁大连,116023
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20152304.0956
  CLC： TP212.12
- Received：24 September 2014，
  
  Revised：25 November 2014，
  
  Published：25 April 2015
- 稿件说明：
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史鹏飞, 高仁璟, 刘书田. 基于同轴光子带隙晶体的应变传感器[J]. 光学精密工程, 2015,23(4): 956-964

SHI Peng-fei, GAO Ren-jing, LIU Shu-tian. Strain sensor based on coaxial photonic band gap crystal[J]. Editorial Office of Optics and Precision Engineering, 2015,23(4): 956-964
史鹏飞, 高仁璟, 刘书田. 基于同轴光子带隙晶体的应变传感器[J]. 光学精密工程, 2015,23(4): 956-964 DOI： 10.3788/OPE.20152304.0956.

SHI Peng-fei, GAO Ren-jing, LIU Shu-tian. Strain sensor based on coaxial photonic band gap crystal[J]. Editorial Office of Optics and Precision Engineering, 2015,23(4): 956-964 DOI： 10.3788/OPE.20152304.0956.

摘要

基于微波网络理论

提出了一种基于变绝缘层的同轴光子带隙晶体应变传感器的设计方法。给出了同轴光子带隙晶体传感器的结构形式

推导了传感器带隙极值频率与晶体电长度之间的关系。根据给定监测频点设计了传感器的几何尺寸及材料参数

计算了传感器的

参数

计算结果与仿真结果相吻合。分析了提高该传感器灵敏度和品质因数的方法

并搭建了实验测试平台。实验结果表明:当应变量由0 μ

提高至10 000 μ

时

极值频率由2.450 GHz移至2.432 GHz

频移量为18 MHz

灵敏度为1.8 kHz/μ

。得到的实验结果与仿真结果相吻合

验证了本文所提出的基于变绝缘层的同轴光子带隙晶体应变传感器设计方法的可行性和有效性。该传感器可满足不同灵敏度需求下对应变的实时监测。

Abstract

According to microwave network theory

a coaxial photonic band gap crystal strain sensor was proposed based on a variable insulating layer. The model of the coaxial photonic band-gap crystal sensor was provided

and the relationship between the peak frequency of band gap and the electric length of the crystal was deduced. The structural size and the material parameters of the coaxial photonic band gap crystal sensor under a certain demand were designed. The

parameters were calculated

and they are well coincided with that from a simulation. The method for improving the sensitivity and quality factor of the sensor was analyzed and an experimental platform was set up. The experimental result shows that when the strain changes from 0 μ

to 10 000 μ

the peak frequency of the band gap is changed from 2.450 GHz to 2.432 GHz

in which the frequency shift is 18 MHz

and the sensitivity is 1.8 kHz/μ

. The simulation results coincide with the experimental one

and validate the feasibility of the designing method of the strain sensor.

关键词

Keywords

references

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