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Related Experiment Video

Updated: Feb 12, 2026

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
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Ultra-fast all-optical decoder based on nonlinear photonic crystal ring resonators.

Tina Daghooghi, Mohammad Soroosh, Karim Ansari-Asl

    Applied Optics
    |April 1, 2018
    PubMed
    Summary

    This study presents a novel all-optical decoder using photonic crystal ring resonators, achieving a 500 GHz switching speed for faster optical computing. The device

    Area of Science:

    • Photonics
    • Optical Computing
    • Materials Science

    Background:

    • All-optical decoders are crucial for high-speed optical information processing.
    • Existing decoders face limitations in switching speed and size.

    Purpose of the Study:

    • To introduce a novel 2-to-4 all-optical decoder.
    • To leverage photonic crystal ring resonators for enhanced performance.

    Main Methods:

    • Design of a 2D square chalcogenide rod lattice photonic crystal.
    • Integration of three nonlinear ring resonators with a Kerr coefficient of 9x10^-17 m^2/W.
    • Operation at a 1550 nm wavelength.

    Main Results:

    • Achieved a maximum response time of 2 ps.

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  • Demonstrated a switching speed of 500 GHz, surpassing previous works.
  • The structure's compact size is suitable for optical integrated circuits.

    • Conclusions:

    • The proposed all-optical decoder offers significant advancements in switching speed.
    • The device is a promising candidate for next-generation optical integrated circuits.