A DFB Fiber Laser Sensor System with Ultra-high Resolution and its Noise Analysis

被引：0
|
作者：
Xiao, Hao [1 ]
Li, Fang [1 ]
He, Jun [1 ]
Liu, Yuliang [1 ]
机构：
[1] Chinese Acad Sci, Inst Semicond, Optoelect Syst Lab, Beijing 100083, Peoples R China
来源：
APOS: 2008 1ST ASIA-PACIFIC OPTICAL FIBER SENSORS CONFERENCE | 2008年
关键词：
fiber sensor; DFB fiber laser sensor system; noise analysis; PGC; interferometer;
D O I：
暂无
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：
We describe a distributed feedback fiber laser (DFB FL) sensor system with ultra-high resolution. The sensor is made by writing distributed feedback structures into a high gain active fiber, and the system employs an unbalanced Michelson interferometer to translate laser wavelength shifts induced by weak measurands into phase shifts. A digital phase generated carrier demodulation scheme is introduced to achieve ultra-high resolution interrogation. A detailed noise analysis of the system is presented, and it is shown that the system resolution is limited by the frequency noise of the DFB FL.
引用
收藏
页码：78 / 81
页数：4
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