An all-optical 1*2 de-multiplexer based on two-dimensional nonlinear photonic crystal ring resonators

Esmat Rafiee, Fatemeh Abolghasemi

Optoelectronics Letters ›› 2023, Vol. 20 ›› Issue (1) : 23-27.

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Optoelectronics Letters ›› 2023, Vol. 20 ›› Issue (1) : 23-27. DOI: 10.1007/s11801-024-3088-3
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An all-optical 1*2 de-multiplexer based on two-dimensional nonlinear photonic crystal ring resonators

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Abstract

In this work, a new configuration of an all-optical nonlinear de-multiplexer gate based on two-dimensional (2D) photonic crystals (PhC) is proposed. The gate is considered in the double-ring resonator shaped structure of silicon rods. In order to have a more functional structure, some defect rods made of nonlinear materials were positioned in the structure. Considering the functionality of the structure, photonic band gap (PBG), field distribution and transmitted power spectra are investigated. Plane wave expansion and finite difference time domain (FDTD) methods are utilized for extracting the PBG and field distribution diagrams. The remarkable dimension, bit rate, maximum intensity and contrast ratio of 116.64 µm2, 3.125 Tbit/s, 97% and 40.2 dB are obtained, respectively, which make the gate an appropriate candidate for utilization in optical integrated circuits.

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Esmat Rafiee, Fatemeh Abolghasemi. An all-optical 1*2 de-multiplexer based on two-dimensional nonlinear photonic crystal ring resonators. Optoelectronics Letters, 2023, 20(1): 23‒27 https://doi.org/10.1007/s11801-024-3088-3

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