Dual-cavity interferometric wavelength-shift detection for in-fiber Bragg grating sensors

被引:33
作者
Rao, YJ [1 ]
Jackson, DA [1 ]
Zhang, L [1 ]
Bennion, I [1 ]
机构
[1] ASTON UNIV,DEPT ELECT ENGN,PHOTON RES GRP,BIRMINGHAM B4 7ET,W MIDLANDS,ENGLAND
关键词
D O I
10.1364/OL.21.001556
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A dual-cavity interrogation method used to enhance the unambiguous measurement range of in-fiber Bragg grating sensors with high-resolution interferometric wavelength-shift detection is described. This novel technique is based on the use of two sets Of fringes obtained with a stepped interferometric wavelength scanner with dual cavity lengths. We demonstrate the concept by interrogating an in-fiber grating temperature sensor with a stepped Michelson wavelength scanner. (C) 1996 Optical Society of America
引用
收藏
页码:1556 / 1558
页数:3
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