The output wavelength can be changed from 1583 nm to 1600 nm by using a high birefringence fiber loop mirror as a wavelength filter and the stability of the output laser was very good.

• 其中的波长选择器件为一包括两段高双折射光纤在内的光纤环镜,通过调整环镜内偏振控制器的状态可以改变环镜对不同波长的反射率以获得可变波长输出的效果。