Optimization of DWDM Demultiplexer Using Regression Analysis

Abstract EN

We propose a novel twelve-channel Dense Wavelength Division Multiplexing (DWDM) demultiplexer, using the two-dimensional photonic crystal (2D PC) with square resonant cavity (SRC) of ITU-T G.694.1 standard.

The DWDM demultiplexer consists of an input waveguide, SRC, and output waveguide.

The SRC in the proposed demultiplexer consists of square resonator and microcavity.

The microcavity center rod radius ( R m ) is proportional to refractive index.

The refractive index property of the rods filters the wavelengths of odd and even channels.

The proposed microcavity can filter twelve ITU-T G.694.1 standard wavelengths with 0.2 nm/25 GHz channel spacing between the wavelengths.

From the simulation, we optimize the rod radius and wavelength with linear regression analysis.

From the regression analysis, we can achieve 95% of accuracy with an average quality factor of 7890, the uniform spectral line-width of 0.2 nm, the transmission efficiency of 90%, crosstalk of −42 dB, and footprint of about 784 μm2.