Pulse generation in Yb-doped polarization-maintaining fiber laser by nonlinear polarization evolution

Liang Cheng-Bin¹, Song Yan-Rong^{1, †}, Dong Zi-Kai¹, Wu Yun-Feng¹, Tian Jin-Rong¹, Xu Run-Qin²

Simplified theoretical model of ASA with x axis (horizontal) and y axis (vertical) being two main polarization axes of PM fiber, α being variable, and θ = 25°.