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MOSFET: Enhancement Mode01:22

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Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
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Tunable electromagnetically induced transparency in integrated silicon photonics circuit.

Ang Li, Wim Bogaerts

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    |December 17, 2017
    PubMed
    Summary

    We demonstrate tunable electromagnetically induced transparency (EIT) and fast/slow light in silicon photonics. A novel integrated circuit with an embedded Fabry-Perot cavity achieves this, offering tunable optical properties.

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    Area of Science:

    • Photonics
    • Integrated Optics
    • Quantum Optics

    Background:

    • Electromagnetically induced transparency (EIT) enables significant light-matter interaction.
    • Silicon photonics offers a scalable platform for integrated optical devices.
    • Controlling light propagation speed is crucial for optical buffering and signal processing.

    Purpose of the Study:

    • To develop a novel silicon photonics circuit for tunable EIT.
    • To demonstrate the generation of tunable fast and slow light.
    • To investigate the underlying Fano resonance mechanism.

    Main Methods:

    • Comprehensive simulation and experimental demonstration of a silicon photonics circuit.
    • Integration of a Fabry-Perot (FP) cavity within a single ring resonator.
    • Utilizing thermo-optic tuners to control FP cavity modes and reflections.

    Main Results:

    • Achieved tunable EIT and Fano resonance through the interaction of ring and FP cavity modes.
    • Demonstrated tunable extinction ratio and bandwidth of EIT.
    • Experimentally verified generation of both fast and slow light, with a maximum group delay of 1100 ps and pulse advance of 1200 ps.

    Conclusions:

    • The proposed integrated silicon photonics circuit enables tunable EIT and control over light propagation speed.
    • This platform provides a new avenue for developing advanced optical signal processing components.
    • The demonstrated capabilities are significant for future integrated photonic applications.