Surface plasmon polariton modulator with optimized active layer

Viktoriia Babicheva, Andrei Lavrinenko

    Research output: Contribution to journalConference articleResearchpeer-review

    Abstract

    A multilayered waveguide, which supports surface plasmon polaritons, is considered as an absorption modulator. The waveguide core consists of a silicon nitride layer and ultrathin layer with the varied carrier density embedded between two silver plates, which also serve as electrodes. Under applying voltage to electrodes the carrier density in the transparent conducting oxide layer (we study indium tin oxide - ITO) changes according to the Thomas-Fermi screening theory. We employ analytical solutions for a multilayered system as well as numerical simulations with the commercial software package CST Microwave Studio in the frequency domain. We explore different permittivities of the ITO layer, which can be achieved by utilizing different anneal conditions. To increase transmittance and enhance modulation depth or efficiency, we propose to pattern the continuous active layer. Dependence from the pattern size and filling factor of the active material are analyzed for tuned permittivity of the ITO layer. Direct simulation of the device functionality validates optimization design.
    Original languageEnglish
    JournalProceedings of SPIE - The International Society for Optical Engineering
    Volume8424
    Pages (from-to)842413
    Number of pages7
    ISSN0277-786X
    DOIs
    Publication statusPublished - 2012
    EventSPIE Photonics Europe 2012 - The Square Conference Ctr., Brussels, Belgium
    Duration: 16 Apr 201219 Apr 2012
    http://spie.org/x12290.xml
    http://spie.org/x12295.xml

    Conference

    ConferenceSPIE Photonics Europe 2012
    LocationThe Square Conference Ctr.
    Country/TerritoryBelgium
    CityBrussels
    Period16/04/201219/04/2012
    Internet address

    Keywords

    • Modulators
    • Surface plasmons
    • Plasmonic waveguides
    • Metal-insulator-metal waveguides
    • Semiconductor optical devices
    • Electro-optical devices
    • Switching applications
    • Integrated circuits
    • Photonic interconnects

    Fingerprint

    Dive into the research topics of 'Surface plasmon polariton modulator with optimized active layer'. Together they form a unique fingerprint.

    Cite this