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Related Experiment Video

Updated: Jun 22, 2026

Fabrication and Characterization of High-Q Silicon Nitride Membrane Resonators
09:46

Fabrication and Characterization of High-Q Silicon Nitride Membrane Resonators

Published on: August 8, 2025

Energy harvesting in silicon optical modulators.

Sasan Fathpour, Bahram Jalali

    Optics Express
    |June 17, 2009
    PubMed
    Summary

    This study introduces an electro-optic silicon modulator that achieves negative electrical power dissipation. It innovatively uses two-photon absorption and a nonlinear photovoltaic effect for efficient optical modulation and power recovery.

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    Area of Science:

    • Photonics
    • Optoelectronics
    • Materials Science

    Background:

    • Silicon photonics enables advanced optical devices.
    • Optical modulators are crucial for optical communication.
    • Energy efficiency in photonic devices is a significant challenge.

    Purpose of the Study:

    • To propose a novel electro-optic silicon modulator.
    • To achieve negative electrical power dissipation in an optical modulator.
    • To enhance energy efficiency in silicon photonic devices.

    Main Methods:

    • Utilizing electrical control of losses via two-photon absorption.
    • Exploiting the nonlinear photovoltaic effect for power recovery.
    • Designing and simulating an electro-optic silicon modulator.

    Main Results:

    • Demonstrated optical modulation through controlled optical losses.
    • Achieved negative electrical power dissipation in the modulator's on-state.
    • Recovered dissipated optical power using the photovoltaic effect.

    Conclusions:

    • The proposed silicon modulator offers a pathway to energy-efficient optical modulation.
    • This design overcomes traditional power dissipation limitations in electro-optic devices.
    • The integration of nonlinear effects presents new opportunities in photonic device design.

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