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Parametric coherent receiver.

Aleš Kumpera, Rohit Malik, Abel Lorences-Riesgo

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    Summary
    This summary is machine-generated.

    We developed a novel parametric coherent receiver using a fiber optical parametric amplifier (FOPA). This single-ended system achieves simultaneous gain and coherent mixing, enabling flexible wavelength separation for advanced optical communications.

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    Area of Science:

    • Optics and Photonics
    • Optical Communications

    Background:

    • Coherent receivers are crucial for high-performance optical communication systems.
    • Traditional homodyne receivers often require complex setups and precise wavelength matching.

    Purpose of the Study:

    • To introduce a novel parametric coherent receiver.
    • To demonstrate its capability for simultaneous signal gain and coherent mixing.
    • To evaluate its performance against standard homodyne receivers.

    Main Methods:

    • Theoretical analysis of the parametric coherent receiver.
    • Experimental proof-of-concept implementation utilizing a two-mode pump-degenerate fiber optical parametric amplifier (FOPA).
    • Performance comparison with a standard single-ended homodyne coherent receiver.

    Main Results:

    • The proposed FOPA-based receiver provides inherent single-ended operation.
    • It achieves simultaneous gain and coherent mixing of the signal and local oscillator.
    • Arbitrary wavelength separation between the signal and local oscillator is theoretically possible.

    Conclusions:

    • The parametric coherent receiver offers a promising alternative to conventional designs.
    • Its single-ended nature and wavelength flexibility enhance its applicability in optical systems.
    • Further research can explore optimization for specific communication scenarios.