A Simple Fiber Bragg Grating-Based Sensor Network Architecture with Self-Protecting and Monitoring Functions

被引：29

作者：

Yeh, Chien-Hung ^{[1
]}

Chow, Chi-Wai ^{[2
,3
]}

Wu, Ping-Chun ^{[2
,3
]}

Tseng, Fan-Gang ^{[4
]}

机构：

[1] Ind Technol Res Inst ITRI, Informat & Commun Res Labs, Hsinchu 31040, Taiwan

[2] Natl Chiao Tung Univ, Dept Photon, Hsinchu 30010, Taiwan

[3] Natl Chiao Tung Univ, Inst Electroopt Engn, Hsinchu 30010, Taiwan

[4] Natl Tsing Hua Univ, Dept Engn & Syst Sci, Hsinchu 30013, Taiwan

来源：

SENSORS | 2011年 / 11卷 / 02期

关键词：

FBG sensor; fault protection; passive ring architecture;

D O I：

10.3390/s110201375

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A novel fiber Bragg grating (FBG)-based passive sensor architecture, which can be used to protect the fiber cut and monitor the multiple sensors simultaneously, is proposed and experimentally demonstrated. Here, we employ a wavelength-tunable erbium-doped fiber (EDF) laser scheme with 25 km cavity length acting as the detecting light source in central office (CO). Each FBG sensor, serving as a feedback element, is used in proposed sensor architecture. By tuning the tunable bandpass filter (TBF) placing inside cavity to match the corresponding Bragg wavelength of FBG over the amplification bandwidth, we can retrieve the related wavelength lasing for the FBG sensing and monitoring simultaneously. Moreover, the survivability and capacity of the passive FBG sensor architecture can be also enhanced.

引用

页码：1375 / 1382

页数：8

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