Abstract :
Abstract— A two dimensional hexagonal photonic crystal based circular bandpass filter (2D-PCBPF) basically designed in L-band, which find it application in various satellite communication. Here we are using circular cavity based PC BPFs which is proposed and investigate. The output efficiency and bandwidth of circular bandpass filter studied by varying the rode radius of the cavity. In this paper, we are using photonic crystal structure, consist of gallium (III) arsenide with RI value 3.927, which found its application in various satellite communication. The circular cavity based band pass filter gives better performance than others because of its circular resonating modes in the cavity. The simulation result is obtained using 2D finite difference time domain method (FDTD method). The photonic bandgap is calculated by plane wave expansion (PWE) method. The overall size of the 2D- PCBPF is 11.2 ᆌm X 9.5 ᆌm.
Keyword :
Keywords— Photonic crystal, Band pass filter, FDTD method, PWE method, Photonic band gap.