激光线宽
相位噪声
光学
激光器
材料科学
传输(电信)
噪音(视频)
表征(材料科学)
物理
计算机科学
电信
图像(数学)
人工智能
作者
Xi Chen,Abdullah Al Amin,William Shieh
标识
DOI:10.1109/jlt.2011.2160153
摘要
A closed-form expression for differential phase-error variance is derived for the phase noise averaged over a finite time window. Using this expression, a method of laser linewidth characterization and in-service monitoring is proposed in presence of additive white noise applicable to both single-carrier and multi-carrier systems. The method is further substantiated by experiments of 107-Gb/s coherent optical OFDM transmission over 960-km SSMF fiber. Additionally, a novel technique of digitally tuning laser linewidth is proposed and demonstrated which may be useful to systematically study the laser phase noise impact.
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