Quasi-periodic one-dimensional photonic crystal as a perspective structures for nanophotonics: Analysis of transmittivity spectra

The characteristic matrix approach is used to evaluate optical transmission spectra for a 1D multilayered photonic system. The characteristics of transmittance are analyzed for different incident angles, layer thicknesses (from a few to hundred nanometers), and electron densities for the light wave propagating through both periodic and quasi-periodic photonic structures. The shifting trend of photonic band gap in the infrared wavelength regimes is observed for different types of quasi-sequence. Increased electron density, on the other hand, makes the band gap more robust, although collision frequency has a minor effect on the band gap. Moreover, the physical entities play a key role in the appearance of multiple band gaps in the greater wavelength regimes. For example, such nanophotonic devices as optical bandpass filters in the infrared regime can be designed by using the concept of the proposed structure. We further show that the suggested quasiperiodic multilayered structures can function as resilient adjustable photonic lattices with the above-mentioned properties that can be tuned.