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Design and analysis of integrated all-optical \(2\times 4\) decoder based on 2D photonic crystals

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Abstract

In the development of the technology of all-optical integrated circuits, the logic gates play considerable role in the progress of optical components. As one of the main building-blocks of an optical system, a high-performance 2*4 all-optical decoder is proposed and studied based on nonlinear effects in a photonic crystal ring resonator. The proposed structure consists of 1*2 decoders which are combined to operate as a unique 2*4 decoder and this will let us to extend the design to decoders with increased inputs. An optical bias is used to interact with input signals, and each output port is enabled for a given code in the input code. Numerical simulation methods such as plane wave expansion and finite difference time domain are performed to study the operation of proposed structure. Results of simulations show that for an on-state output, the highest achievable power is about 87% and the lowest value is 40%. For the case of 40%, the on/off ratio of outputs is at least 2.22 which ensures the acceptable resolution needed for detection of on-state. Maximum cross-talk about −10 dB and insertion loss about −8.8 dB is obtained for proposed decoder.

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Authors and Affiliations

  1. Department of Electrical Engineering, Ahar branch, Islamic Azad University, Ahar, Iran

    Shahla Khosravi

  2. Department of Electrical Engineering, Urmia branch, Islamic Azad University, Urmia, Iran

    Mahdi Zavvari

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  1. Shahla Khosravi
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  2. Mahdi Zavvari
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Correspondence to Mahdi Zavvari.

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Khosravi, S., Zavvari, M. Design and analysis of integrated all-optical \(2\times 4\) decoder based on 2D photonic crystals. Photon Netw Commun 35, 122–128 (2018). https://doi.org/10.1007/s11107-017-0724-x

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  • DOI: https://doi.org/10.1007/s11107-017-0724-x

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