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Related Experiment Video

Updated: Jun 22, 2026

Fabrication and Characterization of High-Q Silicon Nitride Membrane Resonators
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Silicon electro-optic modulators using p-i-n diodes embedded 10-micron-diameter microdisk resonators.

Linjie Zhou, Andrew W Poon

    Optics Express
    |June 12, 2009
    PubMed
    Summary

    We developed a silicon electro-optic modulator with a microdisk resonator and p-i-n diode. It achieved a 510 MHz modulation bandwidth with high Q factor and low drive voltage.

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    Area of Science:

    • Photonics
    • Materials Science
    • Electrical Engineering

    Background:

    • Silicon photonics enables integrated optical circuits.
    • Electro-optic modulators are key components for optical communication.
    • Microdisk resonators offer high Q factors for enhanced light-matter interaction.

    Purpose of the Study:

    • To demonstrate a novel silicon electro-optic modulator.
    • To investigate the performance of a microdisk resonator-based modulator.
    • To achieve high modulation bandwidth with low driving voltage.

    Main Methods:

    • Fabrication of a 10-micron-diameter silicon microdisk resonator.
    • Lateral integration of a p-i-n diode around the microdisk.
    • Experimental characterization of modulation bandwidth and Q factor.

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    Last Updated: Jun 22, 2026

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    Main Results:

    • Achieved a modulation bandwidth of 510 MHz.
    • Utilized a Q ~ 16,900 resonance mode.
    • Operated with a square-wave drive voltage of ~0.9 V forward bias and ~-6 V reverse bias.

    Conclusions:

    • The demonstrated silicon electro-optic modulator shows promising performance for integrated photonics.
    • The microdisk resonator design enhances modulation efficiency.
    • This device is suitable for high-speed optical modulation applications.