波长编码型光纤传感器高精度解调技术研究进展

doi:10.3969/j.issn.0255-8297.2020.02.005

应用科学学报 ›› 2020, Vol. 38 ›› Issue (2): 279-295.doi: 10.3969/j.issn.0255-8297.2020.02.005

波长编码型光纤传感器高精度解调技术研究进展

陈嘉庚, 刘庆文, 赵双祥, 何祖源

上海交通大学区域光纤通信网与新型光通信系统国家重点实验室, 上海 200240

收稿日期:2019-12-13 出版日期:2020-03-31 发布日期:2020-04-01
通信作者: 何祖源,教授,博导,研究方向为光纤传感与光互连技术.E-mail:zuyuanhe@sjtu.edu.cn E-mail:zuyuanhe@sjtu.edu.cn
基金资助:
国家重点研发计划项目（No.2017YFB0405500）；国家自然科学基金（No.61327812，No.61620106015，No.61307106）资助

Progress in High Resolution Demodulation Techniquesfor Wavelength-Encoded Optical Fiber Sensor

CHEN Jiageng, LIU Qingwen, ZHAO Shuangxiang, He Zuyuan

State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai 200240, China

Received:2019-12-13 Online:2020-03-31 Published:2020-04-01

摘要/Abstract

摘要： 介绍了波长编码型光纤传感器高精度解调技术的最新研究进展，所涉及的解调技术能够实现对波长编码型光纤传感单元阵列的亚纳应变级分辨率的测量能力.首先回顾了光纤光栅应变传感技术，分析了高精度光纤应变传感器所选用的敏感元件；然后介绍了前馈式扫频激光线宽压缩技术和闭环轮询式探测技术，详述其理论原理、实现方案、性能指标；最后介绍了基于上述技术实现的高精度光纤应变传感系统实现地壳形变观测的应用实例，为各类高性能光纤传感器的研究与应用提供参考.

关键词: 光纤应变传感器, 高精度, 解调技术, 光纤布拉格光栅

Abstract: This paper introduces the latest progress in the demodulation techniques of high resolution wavelength-coded optical fber sensor, which are applicable to high performance optical fber strain sensor and sensor array with sub-nano strain resolution. This paper frst reviews and discusses the classical FBG strain sensing technique and introduces the optimized sensing elements in high resolution optical fber strain sensing systems; then presents the authors' recent works on demodulation methods for high resolution optical fber sensors, including a feed-forward frequency-swept laser linewidth compression technique and a closed-loop cyclic interrogation technique in detail. Finally, we introduces an implementation of the high resolution optical fber sensors in the observation of crustal deformation, providing an example for other related research and application scenarios.

Key words: optical fber strain sensor, high resolution, demodulation technique, fber Bragg grating (FBG)

中图分类号:

P751.1

陈嘉庚, 刘庆文, 赵双祥, 何祖源. 波长编码型光纤传感器高精度解调技术研究进展[J]. 应用科学学报, 2020, 38(2): 279-295.

CHEN Jiageng, LIU Qingwen, ZHAO Shuangxiang, He Zuyuan. Progress in High Resolution Demodulation Techniquesfor Wavelength-Encoded Optical Fiber Sensor[J]. Journal of Applied Sciences, 2020, 38(2): 279-295.

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波长编码型光纤传感器高精度解调技术研究进展

Progress in High Resolution Demodulation Techniquesfor Wavelength-Encoded Optical Fiber Sensor

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