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    This study demonstrates simultaneous processing of three optical-tapped-delay-line (OTDL) functions on two data channels, achieving six outputs. This advancement enhances optical network data processing capabilities.

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    Area of Science:

    • Photonics
    • Optical Communications
    • Nonlinear Optics

    Background:

    • Optical-tapped-delay-line (OTDL) devices enable data processing in optical networks.
    • Previous OTDL implementations processed single channels or single functions per channel.

    Purpose of the Study:

    • To experimentally demonstrate simultaneous execution of multiple OTDL functions on multiple optical data channels.
    • To achieve multiple optical data outputs from a single OTDL system.

    Main Methods:

    • Utilized a periodically poled lithium niobate (PPLN) waveguide for nonlinear wave mixing.
    • Employed two quadrature-phase-shift-keying (QPSK) and two on-off-keying (OOK) data channels as inputs.
    • Encoded OTDL function weights onto delayed data copies and pumps.

    Main Results:

    • Successfully generated six optical data outputs at distinct frequencies.
    • Achieved high symbol correctness for format conversion, complex filtering, and pattern recognition on QPSK and OOK channels.
    • Demonstrated ~99.5% correctness for QPSK format conversion at 7.5-Gbaud and 100% for pattern recognition.

    Conclusions:

    • This work presents a novel method for simultaneously performing multiple OTDL functions on multiple optical data channels.
    • The experimental results validate the system's effectiveness for advanced optical signal processing.
    • The demonstrated technique offers significant potential for enhancing the capacity and functionality of optical networks.