ACTIVE WAVELENGTH DEMODULATION OF BRAGG FIBEROPTIC STRAIN SENSOR USING ACOUSTOOPTIC TUNABLE FILTER

被引:14
作者
COROY, T [1 ]
ELLERBROCK, PJ [1 ]
MEASURES, RM [1 ]
BELK, JH [1 ]
机构
[1] MCDONNELL DOUGLAS AEROSP,ST LOUIS,MO 63166
关键词
ACOUSTOOPTICAL FILTERS; FIBEROPTIC SENSORS; GRATINGS IN FIBERS; STRAIN SENSORS;
D O I
10.1049/el:19951087
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
An acousto-optic tunable filter based active wavelength demodulation system for intracore Bragg grating fibre-optic sensors has been demonstrated. The system uses an intensity self-referenced edge-locking technique to track the reflected signal of the Bragg sensor. A strain resolution of 2.2 mu epsilon was achieved with a Bragg fibre-optic strain sensor operating at similar to 1324nm, corresponding to a wavelength resolution of 2.6pm. The potential for high resolution measurements over wide wavelength ranges is particularly attractive for wavelength multiplexing of Bragg grating sensors.
引用
收藏
页码:1602 / 1603
页数:2
相关论文
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