Performance Analysis of Planar Nanocavities-Based Wavelength Demultiplexer for Optical Communication Systems
Journal: INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY (Vol.11, No. 5)Publication Date: 2013-12-09
Authors : Rasha H. Mahdi; Raad Fyath;
Page : 2552-2585
Keywords : Surface plasmon polaritons (SPPs); Plasmonic waveguide; Plasmonic nanocavities; Plasmonic demultiplexer; Wavelength-division multiplexing (WDM); Multi-channel filter; Metal-Insulator structure and Optical communication systems.;
Abstract
This paper presents the design and analysis of planar plasmonic wavelength demultiplexer for optical communication systems. The demultiplexer is based on silver-air-silver plasmonic waveguide supported by two nanocavities for each drop channel. One cavity is used as a resonant tunneling-based channel drop filter while the other is used to realize wavelength-selective reflection feedback in the bus waveguide. ?For each channel, a parametric study is performed to characterize the performance of the two corresponding nanocavities when they are operating in isolated mode. ?The results are then used as a basis to design a single-channel demultiplexer by introducing the coupling between the two nanocavities. Simulation results are reported for a three-channel demultiplexer (1550, 1300, and 850 nm) using Computer Simulation Technology (CST) software package. A drop efficiency as high as ?is obtained for each drop channel in the designed demultiplexer. The simulated results can be used as a guideline to design ultra-compact wavelength-division multiplexing (WDM) systems in highly integrated optical circuits.?
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