Active WDM demodulation scheme for fiber Bragg grating sensors

被引：0
|
作者：
Araújo, FM [1 ]
Ferreira, LA [1 ]
Santos, JL [1 ]
Farahi, F [1 ]
机构：
[1] INESC, Unidade Tecnol Optoelect & Elect, P-4150 Porto, Portugal
来源：
FIBER OPTIC AND LASER SENSORS AND APPLICATIONS: INCLUDING DISTRIBUTED AND MULTIPLEXED FIBER OPTIC SENSORS VII | 1999年 / 3541卷
关键词：
D O I：
10.1117/12.339109
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A closed loop technique for measuring Bragg wavelength shifts based on active wavelength tuning of a WDM coupler is presented. By stretching the coupling region of a fused biconical WDM, the 3 dB point is set by the feedback loop to always match the reflected Bragg wavelength. With this scheme, sensitivities usually associated with highly selective WDM can be obtained without compromising the measurement range.
引用
收藏
页码：41 / 46
页数：6
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