Experiments demonstrate that L-band EDFA will achieve high flat gain by employing a gain flat filter based on fiber loop mirror (FLM).
使用光纤环形镜(FLM)作为增益平坦滤波器进行L波段掺铒光纤放大器的增益平坦化实验，实现了高增益值的平坦输出。
In order to achieve flat multi-wavelength output, a long-period fiber grating with loss peak at 1530 nm is used to obtain flat gain spectrum.
为了获得平坦的多波长输出，在谐振腔里使用了一个损耗峰位于1530nm处的长周期光纤光栅，以获得较为平坦的增益谱。
In order to achieve flat multi-wavelength output, a long-period fiber grating with loss peak at 1530 nm is used to obtain flat gain spectrum.
为了获得平坦的多波长输出，在谐振腔里使用了一个损耗峰位于1530nm处的长周期光纤光栅，以获得较为平坦的增益谱。
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