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Related Experiment Video

Updated: Jun 20, 2026

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

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Published on: April 4, 2017

Analysis of bistability in a ring-channel waveguide.

D Sarid

    Optics Letters
    |August 28, 2009
    PubMed
    Summary

    This study details a ring-channel waveguide with an optical-power-dependent refractive index, demonstrating low-power optical switching. The device shows potential for efficient nonlinear optical applications.

    Area of Science:

    • Optics and Photonics
    • Nonlinear Optics
    • Integrated Photonics

    Background:

    • Optical waveguides are fundamental components in photonic integrated circuits.
    • Nonlinear optical effects enable advanced functionalities like optical switching.
    • Ring-channel waveguides offer unique light confinement and interaction properties.

    Purpose of the Study:

    • To theoretically analyze the operation of a ring-channel waveguide coupled to two line channels.
    • To investigate the bistability of the device based on various physical parameters.
    • To demonstrate the potential for low-power optical switching using nonlinear materials.

    Main Methods:

    • Theoretical modeling of a coupled waveguide system.
    • Analysis of optical power-dependent refractive index effects.

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  • Numerical simulations to determine switching thresholds and parameters.

    • Main Results:

    • The device exhibits bistability influenced by ring geometry, nonlinear properties, coupling, and losses.
    • A numerical example using Indium Antimonide (InSb) at 5 micrometers shows switching at 1.5 microwatts.
    • The proposed design enables efficient optical switching at low power levels.

    Conclusions:

    • The ring-channel waveguide design is theoretically sound for achieving optical bistability.
    • Low-power optical switching is achievable with appropriate material selection and device design.
    • This work contributes to the development of advanced nonlinear photonic devices.