multichannel tunable band pass filter in 1DPC composed of uniaxial metamaterial at microwave frequency
الموضوعات : journal of Artificial Intelligence in Electrical Engineering
1 - Department of Physics, Ahar Branch, Islamic Azad University, Ahar, Iran
الکلمات المفتاحية: uniaxial indefinite metamaterial, Optical properties, Multilayer,
ملخص المقالة :
We proposed to design adjustable multichannel optical filter based on the uniaxial indefinite metamaterial/dielectric photonic crystal categories arrangement, which can be used as a valuable variation of peak transmission in the microwave region. Owing to the optical axis and polarization dependent uniaxial metamaterial layer, the position trend in the multichannel optical filter is shown to also rely on the both TE and TM polarizations. The results show that by raising the incidence angle, the width of photonic band gap (PBG) compacts (widens) at TE (TM) polarization and the PBG of the structure shift towards the higher frequency side (blue shift), for both polarizations. In addition, the realizing multichannel optical filter and the shift trend of the PBG are also affected by varying the optical axis of the uniaxial indefinite metamaterial and the results show that without appending defect layer in the proposed structure, the sets of comb-like resonant peaks in transmission modes can be created in the lower (higher) band edge of PBG at TE (TM) polarization.
