基于粒子群算法的一维光子晶体滤波器性能优化

Performance Optimization of One-dimensional Photonic Crystal Filter Based on Particle Swarm Optimization

在一维光子晶体带隙内引入镜像缺陷,能够在特定位置形成一个尖锐的透射峰。为了获得1 550 nm中心波长处的窄带透射和高的品质因数,采用粒子群优化算法(PSO)对介质厚度进行优化,当介质层厚度d1=139 nm,d2=222 nm时,在1 550 nm波长处,获得0.95的透射率和135的品质因数。

By introducing the mirroring defects on a one-dimensional photonic bandgap,a sharp transmission peak can be formed in a specific location. In order to obtain narrow-band transmission and high quality factor at the center wavelength of 1550 nm,using particle swarm optimization（ PSO） on dielectric thickness to optimize the thickness of the dielectric layer d1= 139 nm,d2= 222 nm,the wavelength at 1550 nm,the quality factor of 135 and the transmissivity of 0. 95 are obtained.