| 摘要: |
| 研究了基于π相移光纤布拉格光栅（π-PSFBG）的高精度应变传感特性，利用OptiGrating软件仿真计算出π-PSFBG的关键应变传感参数，给出了相应的应变传感特性方程.在应变测量范围0~2100 με内，验证了应变、反射率等关键参数与π-PSFBG中心波长之间的数值关系，得出π-PSFBG的应变灵敏度为1.218 pm·（με）-1. |
| 关键词: 光纤传感 相移光纤光栅 应变测量 |
| DOI：10.3969/J.ISSN.1000-5137.2019.01.015 |
| 分类号: |
| 基金项目: |
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| Research on strain sensing characteristics based on π-PSFBG |
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TAO Peng, WU Xiangnong
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College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai 200234, China
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| Abstract: |
| In this paper,the high-precision strain sensing characteristics based on π-Phase-Shifted Fiber Bragg Grating (π-PSFBG) was mainly studied.The key strain sensing parameters of π-PSFBG were calculated by OptiGrating software,and the corresponding strain sensing characteristic equations were given.The numerical relationship between the key parameters,such as strain,reflectivity and the central wavelength of π-PSFBG was studied and verified in the strain measurement range of 0~2 100 με.The conclusion showed that the strain sensitivity was 1.218 pm·(με)-1 of π-PSFBG. |
| Key words: fiber optic sensing phased-shifted fiber optical grating strain measurement |
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