This laser will serve as a coherent light source to optical fiber communication systems. Such systems, strives to increase bandwidth capacity by using higher order modulation formats that requires linewidth less than 100 kHz. In retrospect, most authors seldom studied the spectral changes of the feedback lasers. Herein, we consider giving back a signal that is gradually getting smaller and returning to the laser. For knowledge advancement, we further demonstrate that RBS can compress linewidth.

中文翻译：

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双FBG反馈辅助的1310 nm窄线宽激光器


该激光器将作为光纤通信系统的相干光源。此类系统致力于通过使用需要线宽小于 100 kHz 的高阶调制格式来增加带宽容量。回想起来，大多数作者很少研究反馈激光器的光谱变化。在这里，我们考虑回馈一个逐渐变小的信号并返回到激光器。为了知识的进步，我们进一步证明了 RBS 可以压缩线宽。