Design and Simulation of Optical 4-Channel Demultiplexer Using Photonic Crystals

Abstract

In this paper, a 4-channel demultiplexer for WDM systems is designed by using 2-dimensional photonic crystals with square structure. Various wavelengths can be conducted in the certain paths of crystals using defects that look like ring resonator. The characteristic of this demultiplexer can be analyzed by obtaining the pass band spectrum. The property of this designation relative to previous works can be stated as size reduction, minimum crosstalk in output channels, minimum distance (about nm) for distinct wavelengths in output bands and bandwidth increasing in consequence. These improvements have been verified by simulation results.

A novel design for an ultracompact optical majority gate based on a ring resonator on photonic crystal substrate

“…The operating wavelength of each circuit is in the range of the photonic band gap, which is determined considering characteristics of the designed structure, including network constant, radius of the rods or holes, and the refraction index [10][11][12][13][14][15][16][17][18][19].…”

Improved Low Crosstalk, High Transmission and Quality Factor Eight Channel Demultiplexer Based on Photonic Crystal

“…In optical communication networks, light waves transmit data over very long distances with excellent speed [3][4][5][6]. In these networks, light waves travel inside optical bers which are designed in the infrared frequency range at the wavelength of 0.8-1.65 µm and transmit data across the ultra-wideband of about 1 THz [7][8][9][10].…”

Designing all Optical Half Adder Based on Photonic Crystal Ring Resonator

“…The light conduction in these structures is based on the photonic band range. Designing optical processors and achieving fully optical communication systems to increase speed and bandwidth and reducing errors are considered to be the need of the communication era [31][32][33][34][35][36][37][38][39][40][41][42].…”