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High-order function waveform generation based on three-channel synthesis via image-reject mixing.

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    This study introduces a novel three-channel synthesis method for generating high-order functional waveforms. The technique allows precise control over harmonic content, demonstrated by creating 3 GHz triangular waves with tunable symmetry.

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    Area of Science:

    • Photonics
    • Optical Engineering
    • Signal Processing

    Background:

    • Generating complex, high-order waveforms is crucial for advanced applications in communications and signal processing.
    • Existing methods often lack precise control over harmonic content and flexibility in waveform shaping.
    • The need for efficient and tunable waveform generation techniques is increasing.

    Purpose of the Study:

    • To propose and analyze a novel high-order functional waveform generation scheme.
    • To demonstrate precise control over harmonic coefficients in the generated waveforms.
    • To experimentally validate the feasibility of the proposed scheme for generating tunable waveforms.

    Main Methods:

    • A three-channel synthesis approach is employed.
    • Each channel utilizes a Mach-Zehnder modulator, frequency shifter, and image-reject mixer.
    • Precise control is achieved by tuning Mach-Zehnder modulator parameters and frequency shifts.

    Main Results:

    • The scheme successfully generates waveforms with harmonics up to the sixth order.
    • Experimental validation confirmed the generation of 3 GHz triangular waves.
    • Tunable symmetry coefficients for the generated waveforms were demonstrated.

    Conclusions:

    • The proposed three-channel synthesis scheme is a feasible method for high-order functional waveform generation.
    • The technique offers precise control over harmonic content and waveform symmetry.
    • This advancement has potential implications for optical signal processing and communications.