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    Demonstration and optimisation of an ultrafast all-optical AND logic gate using four-wave mixing in a semiconductor optical amplifier

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    Authors
    Razaghi, M.
    Nosratpour, A
    Das, Narottam
    Date
    2013
    Type
    Journal Article
    
    Metadata
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    Citation
    Razaghi, M. and Nosratpour, A. and Das, N.K. 2013. Demonstration and optimisation of an ultrafast all-optical AND logic gate using four-wave mixing in a semiconductor optical amplifier. Quantam Electronics. 43 (2): pp. 184-187.
    Source Title
    Quantam Electronics
    DOI
    10.1070/QE2013v043n02ABEH014855
    ISSN
    03687147
    URI
    http://hdl.handle.net/20.500.11937/25043
    Collection
    • Curtin Research Publications
    Abstract

    We have proposed an all-optical AND logic gate based on four-wave mixing (FWM) in a semiconductor optical amplifier (SOA) integrated with an optical filter. In the scheme proposed, the preferred logical function can be performed without using a continuous-wave (cw) signal. The modified nonlinear Schrödinger equation (MNLSE) is used for the modelling wave propagation in a SOA. The MNLSE takes into account all nonlinear effects relevant to pico- and sub-picosecond pulse durations and is solved by the finite-difference beam-propagation method (FD-BPM). Based on the simulation results, the optimal output signal with a 40-fJ energy can be obtained at a bit rate of 50 Gb s-1. In the simulations, besides the nonlinearities included in the model, the pattern effect of the signals propagating in the SOA medium and the effect of the input signal bit rate are extensively investigated to optimise the system performance.

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