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    Area of Science:

    • Photonics
    • Electrical Engineering
    • Signal Processing

    Background:

    • Active mode-locked optoelectronic oscillators (AML-OEOs) are gaining attention for their unique signal characteristics.
    • Existing tunable AML-OEO structures often face challenges with size and independent control of signal parameters.

    Purpose of the Study:

    • To propose and experimentally validate a novel AML-OEO structure.
    • To demonstrate independent adjustability of output signal center frequency and pulse duty cycle.
    • To present a compact solution for tunable AML-OEOs.

    Main Methods:

    • Design of a new AML-OEO architecture.
    • Experimental implementation and testing of the proposed structure.
    • Characterization of output signal properties, including frequency tunability, duty cycle, and phase noise.

    Main Results:

    • The proposed AML-OEO structure exhibits a tunable center frequency range of 14 GHz.
    • Individual adjustment of the output pulse signal's duty cycle was achieved.
    • The output signal demonstrated a phase noise performance of up to -118.25 dBc/Hz at 10 kHz offset.
    • The developed structure is more compact compared to existing tunable AML-OEOs.

    Conclusions:

    • The novel AML-OEO structure successfully provides independent control over center frequency and pulse duty cycle.
    • The compact design and tunable characteristics offer a promising solution for future integrated optoelectronic systems.
    • This work contributes to the advancement of tunable signal generation in optoelectronic oscillators.