利用保偏光纤布拉格光栅（PM-FBG）和高反射率的双色镜构成激光谐振腔，以单模保偏双包层掺镱光纤为增益介质，实现了输出功率为1 W的稳定的双波长激光输出，该激光信噪比为48 dB，斜率效率为34%。利用拱梁调谐方法对输出光栅进行了拉伸和压缩调谐实验,实现的激光调谐范围为8 nm，且调谐过程中双波长的波长间隔变化很小。以格兰汤姆孙棱镜验证了该激光的偏振特性。

A stable continuous-wave dual-wavelength Yb3+-doped fiber laser is demonstrated, in which the resonance cavity is composed of a fiber Bragg grating fabricated in a polarization maintaining fiber (PM-FBG) and a high reflectivity dichromatic mirror. The laser achieves output power of 1.0 W, signal to noise radio (SNR) of 48 dB, slope efficiency of 34%, as well as a very narrow linewidth of 0.2 nm. The dual-wavelength laser′s tuning range is 8 nm by stretching and compressing the PM-FBG which is glued on an arch elastic beam. The polarization characteristics of the laser are then verified by measuring the laser power transmitted through a Glan-Thomson polarizer.