Intrinsic fiber Fabry-Perot temperature sensor with fiber Bragg grating mirrors

被引:70
作者
Wan, XK [1 ]
Taylor, HF [1 ]
机构
[1] Texas A&M Univ, Dept Elect Engn, College Stn, TX 77843 USA
关键词
D O I
10.1364/OL.27.001388
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A fiber Fabry-Perot interferometer (FFPI) sensor is formed with broadband (similar to3 mn, 3-dB bandwidth) fiber Bragg grating (FBG) mirrors. Repetitively modulating a distributed-feedback laser produces chirping that modulates the reflectance of the FFPI. Because the reflectance of the FBG mirrors varies with optical frequency, the fringes in the sensor reflectance modulation are distinguishable, making it possible to extend the sensor dynamic range versus that of a FFPI sensor with conventional wavelength-dependent mirrors. An ambient temperature is determined in the range from 25 to 170 degreesC with a resolution of 0.005 degreesC. (C) 2002 Optical Society of America.
引用
收藏
页码:1388 / 1390
页数:3
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