Design and Simulation of High Effective Multi-Channel Photonic Crystal Filters
高效多信道光子晶体滤波器的设计与仿真

A four channel photonic crystal filter is designed using 2-D photonic crystal.The condition of achieving 100% channel coupling is educed using CMT (coupling mode theory).Four-channel filter is designed based on the condition,and results are simulated using FDTD (finite difference time domain).The coupling efficiency of every channel is higher than 96% from simulation results.Frequency of the four-channel is from 1520 nm to 1 580 nm when lattice constant is 570 nm,and interval of every channel is less than 20 nm.The crosstalk interference of every channel is very small.