Narrow Linewidth CW Laser Phase Noise Characterization Methods for Coherent Transmission System Applications

被引：114

作者：

Camatel, Stefano ^{[2
]}

Ferrero, Valter ^{[1
]}

机构：

[1] Politecn Torino, Dipartimento Elettron, PhotonLab, I-10129 Turin, Italy

[2] Ist Super Mario Boella, PhotonLab, I-10138 Turin, Italy

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2008年 / 26卷 / 17-20期

关键词：

Coherent optical systems; homodyne detection; phase-locked loops; phase measurement; phase noise;

D O I：

10.1109/JLT.2008.925046

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：

Several techniques for phase noise PSD measurement of continuous wave (CW) lasers to be used in coherent transmission systems are analyzed. Between them, we evaluate two novel techniques. The first employs a homodyne optical phase-locked loop, while the second uses a signal source analyzer. Experimental results obtained by these two methods are compared with classical linewidth measurement methods like self-heterodyne and Michelson interferometer. Limits and accuracy of each method are discussed. Furthermore, the comparison shows that, for coherent transmission system applications, only a subset of the analyzed methods is useful for laser phase noise characterization.

引用

页码：3048 / 3055

页数：8

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