A Novel Proposal for DWDM Demultiplexer Design Using Resonance Cavity in Photonic Crystal Structure

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Executive Summary

The authors propose an ultra compact structure for Dense Wavelength Division Multiplexing (DWDM) systems using resonance cavity in Photonic Crystal (PC) structure. To the best of the authors' knowledge, this is for the first time that a PC-based demultiplexer has been achieved with 0.8nm channel spacing, -18.77dB and 4170 average crosstalk and quality factor, respectively without using particular materials or complexities in fabrication. Two-Dimensional (2D) Finite-Difference-Time-Domain (FDTD) method is chosen for simulation in this paper. One of the important applications of PCs is in Wavelength Division Multiplexing (WDM) and Dense WDM (DWDM).

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