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    Area of Science:

    • Optics and Photonics
    • Signal Processing
    • Information Theory

    Background:

    • Optical signal reconstruction is crucial for high-speed communication.
    • Existing methods like Kramers-Kronig (KK) receivers have limitations in handling noise and signal quality.
    • Decorrelated intensity measurements offer a potential alternative for signal recovery.

    Purpose of the Study:

    • To develop a novel scheme for reconstructing the complex envelope of optical signals.
    • To improve signal quality by reducing continuous-wave (CW) tone interference.
    • To achieve efficient signal reconstruction using an iterative algorithm.

    Main Methods:

    • Splitting the optical signal into two copies.
    • Dispersing one signal copy before photo detection to achieve decorrelation.
    • Employing an iterative algorithm, initialized with Kramers-Kronig (KK) reconstruction, for signal recovery.

    Main Results:

    • Successfully reconstructed the complex envelope of optical signals from decorrelated intensity measurements.
    • The iterative algorithm required only a few tens of iterations for convergence.
    • Achieved a 5 dB to 6 dB reduction in continuous-wave tone compared to KK receiver requirements.

    Conclusions:

    • The proposed scheme offers an effective method for optical signal reconstruction.
    • The technique enhances signal quality by mitigating CW tone.
    • This approach provides a more robust and efficient alternative for optical signal processing.