基于萨格纳克环与光栅的双波长光纤激光器

报道一种基于保偏光纤的萨格纳克环与级联的光纤布拉格光栅的双波长掺铒光纤激光器,该激光器采用简单的线性腔结构,所用的萨格纳克环担当了梳状滤波器,光栅组构成了波长选择器件;在偏振烧孔的作用下,通过调整偏振控制器,激光器能够输出5种不同的激发模式,其中,双波长2种,单波长3种;所有的激发线具有小于0.3nm线宽,大于24dB的光学信噪比;同时,该激光器展示了较好的波长与峰值功率稳定性.

Dual wavelength fiber laser with fiber grating based on Sagnac ring

This paper reports a polarization maintaining fiber Sagnac loop and cascaded fiber Prague grating dual wavelength erbium-doped fiber laser based on linear cavity structure is simple by using the laser,using sagnacring as comb filter,grating group constitutes a wavelength selector;the polarization hole burning effect,through adjusting the polarization controller,laser can output 5 different excitation modes,the dual wavelength single wavelength of 2, 3;all excitation lines with less than 0.3nm width is greater than 24dB,the optical signal-to-noise ratio;at the same time,the laser wavelength and the peak power showed good stability.