We first briefly introduce the commonly used calculation and analysis methods for Polarization-Dependent Losses(PDL) and conduct the analysis and calculation of the PDL of optical devices by using the Polarization Analysis function of ZEMAX.Then we compare the measurement results of the practical devices with the computed results by using the commonly used mathematic software
which prove the feasibility and accuracy of this method and show that it is possible not only to improve the designers’ working efficiency
but also to obtain accurate calculation and analysis results by using ZEMAX.