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Two-mode division multiplexing in a silicon-on-insulator ring resonator.

Bryce A Dorin, Winnie N Ye

    Optics Express
    |March 26, 2014
    PubMed
    Summary

    This study presents a two-mode silicon-on-insulator ring resonator for mode-division multiplexing (MDM) systems. The device achieves excellent signal-to-crosstalk ratios, showing potential for future MDM applications.

    Area of Science:

    • Photonics and Optical Communications
    • Integrated Optics
    • Semiconductor Devices

    Background:

    • Mode-division multiplexing (MDM) leverages multimode waveguides to enhance channel capacity.
    • Silicon-on-insulator (SOI) technology has traditionally focused on single-mode devices, limiting its application in MDM.
    • Developing efficient components for MDM on established platforms like SOI is crucial for next-generation optical networks.

    Purpose of the Study:

    • To design and fabricate a two-mode SOI ring resonator suitable for MDM systems.
    • To ensure equal treatment of different modes within the ring resonator.
    • To evaluate the performance of the designed resonator in terms of signal-to-crosstalk ratio.

    Main Methods:

    • Design of a two-mode ring resonator on a silicon-on-insulator platform.

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  • Optimization of device parameters for balanced mode operation.
  • Incorporation of adiabatic Bezier curves in ring bends to manage mode coupling.
  • Fabrication and characterization of the ring resonator device.

    • Main Results:

    • The fabricated SOI ring resonator successfully supports two modes.
    • Adiabatic Bezier curves in the bends ensured equal mode treatment.
    • A signal-to-crosstalk ratio exceeding 18 dB was achieved for both modes at the through and drop ports.
    • The device demonstrated effective performance for MDM applications.

    Conclusions:

    • The developed two-mode SOI ring resonator is a promising component for MDM systems.
    • The design shows potential for integrated optical filtering and switching functionalities on SOI platforms.
    • This work advances the integration of advanced multiplexing techniques with silicon photonics.