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Updated: Sep 25, 2025

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Designing fast and efficient electrically driven phase change photonics using foundry compatible waveguide-integrated

John R Erickson, Vivswan Shah, Qingzhou Wan

    Optics Express
    |April 27, 2022
    PubMed
    Summary

    Researchers optimized phase change optical devices using Ge2Sb2Te5 (GST). Multiphysics simulations improved switching speed and reduced energy consumption for advanced photonic applications.

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    Area of Science:

    • Materials Science
    • Photonics
    • Electrical Engineering

    Background:

    • Phase change chalcogenides like Ge2Sb2Te5 (GST) are crucial for advanced optical devices, including in-memory computing and reconfigurable photonics.
    • Designing efficient electrical control for these devices is challenging due to specific temperature and quenching rate requirements for reversible switching.

    Purpose of the Study:

    • To model and optimize waveguide-integrated microheaters for switching optical phase change materials.
    • To enhance switching speed and minimize energy consumption in Ge2Sb2Te5-based optical devices.

    Main Methods:

    • Utilized a Multiphysics simulation framework to model waveguide-integrated microheaters.
    • Investigated the impact of microheater geometry, doping, and electrical pulse parameters.

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    Main Results:

    • Identified optimal configurations for microheaters to achieve fast and energy-efficient switching of phase change materials.
    • Demonstrated the potential for improved performance in optical devices through tailored electrical control.

    Conclusions:

    • Multiphysics simulations provide a powerful tool for designing efficient phase change optical devices.
    • Optimized microheater designs are key to unlocking the full potential of materials like Ge2Sb2Te5 for next-generation photonics.