概述了激光器的线宽理论。

Theory of laser linewidth has been summarized.

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[据化合物半导体网站2011年11月25日报道]NeoPhotonics公司正提高其用于相干DWDM系统的可调谐窄线宽激光器的生产量，这些激光器用在传输速度高达40Gbps和100Gbps的相干系统中。

The firm is responding to increased demand for its narrow linewidth tuneable lasers for coherent DWDM systems used in high speed 40 and 100 Gbps coherent systems.

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研制出一种新颖的窄线宽、单偏振输出全光纤环形激光器，并给出了这种激光器的结构和技术性能参数。

A narrow linewidth single polarized all fiber ring laser has been fabricated. The structure and the technical parameters are presented.

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