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Updated: May 6, 2026

Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics
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Towards CMOS-compatible nanophotonics: ultra-compact modulators using alternative plasmonic materials.

Viktoriia E Babicheva, Nathaniel Kinsey, Gururaj V Naik

    Optics Express
    |November 13, 2013
    PubMed
    Summary

    We developed ultra-compact plasmonic modulators using transparent conducting oxides. These modulators achieve high extinction ratios for efficient optical signal modulation at telecommunication wavelengths.

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    Area of Science:

    • Photonics and Plasmonics
    • Materials Science
    • Optical Communications

    Background:

    • Plasmonic modulators are crucial for optical communication systems.
    • Existing modulators face challenges in achieving high performance and miniaturization.
    • Novel materials are needed to overcome current limitations.

    Purpose of the Study:

    • To propose and analyze ultra-compact plasmonic modulators.
    • To utilize alternative plasmonic materials like transparent conducting oxides (TCOs) and titanium nitride.
    • To achieve high modulation depth and extinction ratios.

    Main Methods:

    • Designing planar layouts for plasmonic modulators.
    • Employing electric field tuning of carrier concentration in TCOs to control plasmon resonance.

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  • Simulating and analyzing modulator performance at telecommunication wavelengths.

    • Main Results:

    • Achieved an extinction ratio of 46 dB/µm.
    • Demonstrated a 3-dB modulation depth in sub-micron structures.
    • Showcased the potential for large modulation depth due to resonance-enhanced absorption.

    Conclusions:

    • The proposed TCO-based plasmonic modulators offer ultra-compact and high-performance solutions.
    • These modulators can be integrated with existing photonic and electronic circuits.
    • The technology holds promise for advanced optical communication and computing applications.