Optical-communication receivers of proposed type implement high-sensitivity scheme of optical parametric amplification followed by direct detection for reception of extremely weak signals. Incorporates both optical parametric amplification and direct detection into optimized design enhancing effective signal-to-noise ratios during reception in photon-starved (photon-counting) regime. Eliminates need for complexity of heterodyne detection scheme and partly overcomes limitations imposed on older direct-detection schemes by noise generated in receivers and by limits on quantum efficiencies of photodetectors.


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    Title :

    Parametric Amplification For Detecting Weak Optical Signals


    Contributors:

    Published in:

    Publication date :

    1996-02-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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