A numerical analysis on the homogenous property for integrated narrow band pass filter

The integrated narrow band pass filter is an important photonic device. The performance of this device is limited by the two problems, absorption coefficient and thickness homogeneous in the resonant cavity layer. We has developed a numerical simulation method to analysis the influence of these factors on the behavior of integrated filters. It is found that the non-homogeneous of layer thickness will dominate the band width of transmission spectra for the 32-chanels integrated narrow band pass filter device in near infrared.