Hybrid TDM/WDM based fiber-optic sensor network for perimeter intrusion detection

被引：0
|
作者：
Li Xiaolei [1 ]
Sun Qizhen [1 ]
Sun Zhifeng
Wo Jianghai
Zhang Manliang
Liu Deming
机构：
[1] Huazhong Univ Sci & Technol, Coll Optoelect Sci & Engn, Wuhan 430074, Peoples R China
来源：
21ST INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS | 2011年 / 7753卷
基金：
中国国家自然科学基金;
关键词：
Fiber-optic distributed sensor; TDM/WDM; Sagnac interferometer; Intrusion detecting;
D O I：
10.1117/12.886093
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A distributed fiber-optic sensor system is proposed and demonstrated for long-distance intrusion-detection, which employs the hybrid time/wavelength division multiplexing (TDM/WDM) architecture. By utilizing 20 time zones and 6 wavelengths, the system contains up to 120 fiber sensing units (OSU), of which the distributed sensing distance is from 0 to 500m. So the whole sensing distance of this system could reach 60 km. The system has been demonstrated to run stably exceed six months with the false alarm rate of less than 4%.
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页数：4
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