High performance wavelength demodulator for DFB fiber laser sensor using novel PGC algorithm and reference compensation method

被引：4

作者：

He, Jun ^{[1
]}

Li, Fang ^{[1
]}

Zhang, Wentao ^{[1
]}

Wang, Lin ^{[1
]}

Xu, Tuanwei ^{[1
]}

Liu, Yuliang ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Semicond, Optoelect Syst Lab, Beijing 100083, Peoples R China

来源：

21ST INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS | 2011年 / 7753卷

关键词：

distributed feedback (DFB) fiber laser; sensor; wavelength demodulator; phase generated carrier (PGC); reference compensation method;

D O I：

10.1117/12.885823

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We demonstrate a high performance wavelength demodulator for DFB FL sensor using novel PGC algorithm and reference compensation method (RCM). An unbalanced fiber Michelson interferometer is employed and the phase demodulation is accomplished by a digital PGC-Arctan-DSM algorithm. The RCM is adopted to eliminate the environmental noise using a shielded and multiplexed DFB FL as a reference. Experimental results have demonstrated a resolution of 3.5x10(-7) pm/root Hz, a dynamic range of 120 dB @ 100 Hz, a THD of below 0.1 %, and a linearity of 99.99 %. More than 50 dB reduction of the environmental noise has been experimentally achieved within 10-1000 Hz.

引用

页数：4

共 19 条

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