We propose and demonstrate a dispersion-independent erbium-doped mode-locked fiber laser by incorporating a chirped fiber Bragg grating (CFBG) into the laser cavity. Our experimental results show that the fiber laser has similar output characteristics, no matter which section of the CFBG is connected to the laser cavity through a circulator, i.e., opposite dispersion is introduced into the laser cavity. Dispersion independent feature is attributed to the relatively large nonlinearity of the laser cavity with certain bandwidth. This enriches the laser dynamics and provides a new idea for the design of new lasers.

中文翻译：

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具有啁啾光纤布拉格光栅的色散无关锁模掺铒光纤激光器

我们通过在激光腔中加入啁啾光纤布拉格光栅 (CFBG)，提出并展示了一种与色散无关的掺铒锁模光纤激光器。我们的实验结果表明，无论CFBG的哪一段通过环行器连接到激光腔，光纤激光器都具有相似的输出特性，即在激光腔中引入了相反的色散。色散无关特性归因于具有一定带宽的激光腔具有较大的非线性。这丰富了激光动力学，为新型激光器的设计提供了新思路。