Design and Analysis of All Optical 2 To 4 Line Decoders using 2D Photonic Crystal

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Abstract

Optoelectronics and the devices made by this technology are expected to be reliable, faster as they work on the principle of interference phenomenon and waveguides. The crystal lattice which is used is photonic crystal which has specialty based on periodic structure and the interference phenomenon. PHC structures can be one dimensional, two dimensional or three dimensional. Typically, optoelectronics is still ongoing and are used for research purposes. In this work, a 2-to-4-line all-optical logic decoder has been proposed employing two-dimensional photonic crystal (PhC) structure. The decoder works based on the principle of optical interference theory inside PhC waveguides. High- logic states have been produced in conditions of zero input using an optical bias. According to modelling results, the maximum power that can be achieved for an on-state output is about 87%. Maximum contrast ratio is achieved around −10 and insertion loss about −8.8 dB for proposed decoder.

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Keywords

Optoelectronics; Crystal lattice; Photonic crystal (PhC); Decoder.