Multiplexing of fiber Bragg grating sensors using subcarrier intensity modulation

被引：1
|
作者：
Chan, PKC [1 ]
Jin, W [1 ]
Demokan, MS [1 ]
机构：
[1] Hong Kong Polytech Univ, Dept Elect Engn, Hung Hom, Kowloon, Peoples R China
来源：
OPTICS AND LASER TECHNOLOGY | 1999年 / 31卷 / 05期
关键词：
fiber Bragg grating sensors; frequency-division-multipiexing; subcarrier intensity modulation;
D O I：
10.1016/S0030-3992(99)00075-4
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report the theory and experimental demonstration of two multiplexing schemes for addressing fiber grating sensor arrays consisting of multiple branches. In the first scheme, light in each branch is intensity modulated at different subcarrier frequencies and signals from different branches are separated in frequency domain by using bandpass filters. In the second scheme, the modulation frequency in each branch can be the same and signal separation is performed in time domain by using an electronic switch after photodetection. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：345 / 350
页数：6
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