Fiber coupling analysis of multi-chip laser diodes

Using ZEMAX optical design software to simulate a multi-chip laser diode fiber coupling module, 12 single-chip laser diodes with wavelength of 808 nm being coupled into the core diameter of output fiber which is set as 105 microns with a numerical aperture of 0.22, each single-chip laser diode has an output power of 10 W, the fiber end face will have an output power of 116.84 W with a coupling efficiency of 97.36% and a brightness of 8.88 MW/(cm2sr). Finally, optical fiber and single-chip semiconductor laser installation error on the influence of the fiber coupling efficiency is analyzed using ZEMAX and ORIGIN software. It is concluded that the severity of the error influence on the optical coupling efficiency from heavy to light: the vertical axis error, the axial error, the angle error.