BPM Calculation Of Propagation And Gain Characteristics Of Three Dimensional Optical Waveguides

The computational program, which is used to calculate the optic field .rectangle waveguide by three dimension FD-BPM, is programmed and debugged in Matlab, , and we use it to do some actually calculation. This program can calculate the propagation of the optic field in both of homogeneous and inhomogeneous refractive index waveguides. The calculation results show the program is logical and the results are accurate from. Based on the program, the program to calculate the gain characteristic of Er-doped waveguide is finished by using the relationship between complex atomic polarizability and the distributing of Er ions, and the effects on the solution of the field in the waveguide caused by complex atomic polarizability. By the calculation and the logical results we have got, the program is proved adequately to be correct. We use this program to analyze the parameters' effects on the gain characteristics of EDWA. The work in this thesis settled the basis of optimizing and calculatingly analyzing of the propagation and the gain characteristic of three dimensional optical waveguides.