Modeling and optimization of the coupling efficiency for double-clad fiber

In this work, we simulate the efficiency of optical power transfer between a 915 nm diode laser, and a double-clad fiber optic. A lenses array allows collimating and focusing the pump energy to the fiber. This model was made using the optical design software OSLO. The result shows a high coupling efficiency of roughly 84%, which can increase the optical input power in fiber optics lasers.