Numerical Study of Stimulated Brillouin Diffusion in Lasers High Power Photonic Crystal Fiber

We present in this work the special structure of photonic crystal fiber (PCF), the temperature dependent Yb3+ photonic crystal fiber lasers model with stimulated Brillouin scattering (SBS) by solving the steady state rate equation with the SBS in the linear cavity. The numerical results show that the pump power, laser power and stokes powers propagating along axial positions are obtained by using the finite difference method and shooting method. The comparison results of the photonic crystal fiber laser model without temperature factor, the output powers and the SBS threshold powers in different pump schemes are obtained with the simulation. The numerical results show that the SBS threshold power in the two-end pump scheme is more noticeable than other pump schemes.