A comparison between equivalent iterative method and transfer matrix method in the transmittance simulation of a single cavity all-dielectric thin film Fabry-Perot filter

Abstract

This paper firstly gives a detailed description of the equivalent iterative method and the transfer matrix method for calculating the transmittance of a multi-layer membrane structure, and then uses these two methods to simulate the transmittance characteristics of a single cavity all-dielectric thin film Fabry-Perot filter. By comparison, the equivalent iterative method can generate a similar distribution of optical intensity transmittance for TE and TM plane waves with that for the transfer matrix method. The optical intensity transmittance for the equivalent iterative method is just a little lower than that for the transfer matrix method. Besides, for either the TE or the TM plane wave, the distributions of phase variation between the two methods are different.