COHERENT OPTICAL FREQUENCY-DOMAIN REFLECTOMETRY (OFDR) USING A FIBER GRATING EXTERNAL-CAVITY LASER

被引：12
|
作者：
HUANG, KY [1 ]
CARTER, GM [1 ]
机构：
[1] LAB PHYS SCI,COLLEGE PK,MD 20740
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 1994年 / 6卷 / 12期
关键词：
D O I：
10.1109/68.392209
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 optical frequency domain reflectometry (OFDR) system containing a narrow linewidth fiber grating external cavity laser is demonstrated to have 62-dB of sensitivity when detecting Fresnel backreflection and 2 m of resolution at a 115 m range in optical fiber, With this system we were able to detect Rayleigh backscattering in optical fiber with 20-dB signal-to-noise ratio. The phase noise limitation on the distance range for the OFDR was investigated, and the measured signal-to-noise ratio (SNR) data followed the theoretical simulation over the ranges measured. This technique has potential to be applied to the OFDR at 1550 nm with very high dynamic range by using an erbium doped fiber laser.
引用
收藏
页码：1466 / 1468
页数：3
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