| Sagnac/Mach-Zehnder分布式光纤传感系统探测及定位理论分析 |
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| 引用本文： | 吴俊,陈伟民,谭靖,章鹏.Sagnac/Mach-Zehnder分布式光纤传感系统探测及定位理论分析[J].光子学报,2009,38(2):347-351. |
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| 作者姓名： | 吴俊 陈伟民 谭靖 章鹏 |
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| 作者单位： | 1. 重庆交通大学,西南水运工程科学研究所,重庆,400016
2. 重庆大学,光电技术及系统教育部重点实验室,重庆,400030 |
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| 摘 要： | 利用3×3耦合器解调算法实现对光纤沿线破坏行为的探测及预警.在确定破坏行为发生的基础上,通过将光源切换为窄带光源,使Mach-Zehnder干涉系统工作.利用互相关方法实现对破坏行为的精确定位.详细介绍并分析了该方法的系统光路和探测定位原理.
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| 关 键 词： | 光纤光学与光通信 分布式传感 预警 探测 定位 |
| 收稿时间： | 2007-09-21 |
| 修稿时间： | 2007-11-30 |
Detecting and Locating Method of Distributed Optic-fiber Sensing System Based on Sagnac/Mach-Zehnder Interferometers |
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| WU Jun,CHEN Wei-min,TAN Jing,ZHANG Peng.Detecting and Locating Method of Distributed Optic-fiber Sensing System Based on Sagnac/Mach-Zehnder Interferometers[J].Acta Photonica Sinica,2009,38(2):347-351. |
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| Authors: | WU Jun CHEN Wei-min TAN Jing ZHANG Peng |
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| Institution: | 1 Southwest Water Transport Research Department;Chongqing Jiaotong University;Chongqing 400016;China;2 The Key Laboratory for Optoelectronic Technology & Systems;Education Ministry of China;Chongqing University;Chongqing 400030;China |
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| Abstract: | A 3 × 3 coupler demodulation algorithm was used to detect destruction along the fiber.Based on confirming the occurring of the destruction,by switching the broadband to narrowband source,Mach-Zehnder interference system works.The cross-correlation method was used to realize precise positioning,thus achieving the goal that defenders are led to stop acts of sabotage to prevent the occurrence of malice.The optical path was presented,and the detecting and locating principle was analyzed in detail. |
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| Keywords: | Optical fiber optics and optical communication Distributed optic fiber sensor Early-alarm Detecting Locating |
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