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Simultaneous all-optical sampling and quantization scheme based on the nonlinear Kerr effect in an ultra-compact

S Marziyeh Mousavizadeh, Abbas Zarifkar

    Applied Optics
    |October 18, 2022
    PubMed
    Summary
    This summary is machine-generated.

    Researchers developed a new all-optical method for sampling and quantization using silicon photonics. This ultra-compact device achieves the smallest footprint for a two-bit optical quantizer, enabling efficient optical signal processing.

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    Area of Science:

    • Photonics
    • Optical Engineering
    • Solid State Physics

    Background:

    • All-optical signal processing offers advantages in speed and bandwidth over electronic methods.
    • Miniaturization of optical components is crucial for integrated photonic circuits.
    • Nonlinear optical effects in silicon waveguides enable advanced functionalities.

    Purpose of the Study:

    • To present a novel method for simultaneous all-optical sampling and quantization.
    • To demonstrate an ultra-compact two-bit optical quantizer.
    • To leverage the nonlinear Kerr effect for efficient optical signal manipulation.

    Main Methods:

    • Utilizing the nonlinear Kerr effect in a silicon-based waveguide grating.
    • Designing nonlinear filters to modify sampling pulses based on input signals.
    • Employing complementary metal-oxide-semiconductor (CMOS) compatible fabrication techniques.

    Main Results:

    • Achieved simultaneous all-optical sampling and quantization.
    • Developed an ultra-compact two-bit optical quantizer with a footprint of 90µm².
    • Demonstrated the smallest footprint for a two-bit optical quantizer compared to recent studies.

    Conclusions:

    • The presented method offers a significant advancement in all-optical signal processing.
    • The ultra-compact design paves the way for highly integrated photonic systems.
    • This silicon-based approach is compatible with existing semiconductor manufacturing.