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Modeling and Optimization of Optical Half Adder in Two Dimensional Photonic Crystals

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Abstract

The output of photonic integrated devices is enhanced using crystal waveguides and cavities but optimization of these devices is a topic of research. In this paper, optimization of the optical half adder in two-dimensional (2-D) linear photonic crystals using four symmetric T-shaped waveguides with 180° phase shift inputs is proposed. The input section of a T-waveguide acts as a beam splitter, and the output section acts as a power combiner. The constructive and destructive interference phenomenon will provide an output optical power. Output port Cout will receive in-phase power through the 180° phase shifter cavity designed near the junction. The optical half adder is modeled in a 2-D photonic crystal using the finite difference time domain method (FDTD). It consists of a cubic lattice with an array of 39 × 43 silicon rods of radius r 0.12 μm and 0.6 μm lattice constant a. The extinction ratio re of 11.67 dB and 12.51 dB are achieved at output ports using the RSoft FullWAVE-6.1 software package.

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Correspondence to Mahesh V. Sonth.

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Sonth, M.V., Soma, S., Gowre, S.C. et al. Modeling and Optimization of Optical Half Adder in Two Dimensional Photonic Crystals. J. Electron. Mater. 47, 4136–4139 (2018). https://doi.org/10.1007/s11664-018-6310-x

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  • DOI: https://doi.org/10.1007/s11664-018-6310-x

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