Dynamic Linewidth Measurements of Tunable Fiber Lasers for Optical Frequency Domain Reflectometry

被引：2
|
作者：
Ding, Zhenyang
Liu, Tiegen [1 ]
Liu, Kun
Jiang, Junfeng
Chen, Qinnan
Meng, Zhuo
Yao, X. Steve
机构：
[1] Tianjin Univ, Coll Precis Instrument & Optoelect Engn, Tianjin 300072, Peoples R China
来源：
SENSOR LETTERS | 2012年 / 10卷 / 07期
关键词：
Optical Frequency Domain Reflectometry (OFDR); Linewidth Measurement; Distributed Sensing;
D O I：
10.1166/sl.2012.2487
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
We describe a novel method for dynamic linewidth measurements of Piezoelectric Transducer (PZT) tuned fiber lasers for optical frequency domain reflectometry (OFDR) based on frequency-modulated continuous-wave (FMCW) delayed self-heterodyne beat interferometer technique, which is not frequency-shifted by acousto-optic modulator (AOM). By using normalized power spectrum with phase noise model of FMCW self-heterodyne beat interferometer, the dynamic linewidth during tuning are measured based on Lorentzian curve fitting. We also found that the reason for the laser dynamic linewidth broadened is that more severe fluctuation of laser optical frequency due to the ripple of PZT driven voltage.
引用
收藏
页码：1493 / 1497
页数：5
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