Optical absorption characteristics and polarization dependence of single-layer graphene on silicon waveguide

Kaori Warabiy, Rai Kou, Shinichi Tanabe, Tai Tsuchizawa, Satoru Suzuki, Hiroki Hibino, Hirochika Nakajima, Koji Yamada

    Research output: Contribution to journalArticle

    Abstract

    Graphene is attracting attention in electrical and optical research fields recently. We measured the optical absorption characteristics and polarization dependence of single-layer graphene (SLG) on submicrometer Si waveguide. The results for graphene lengths ranging from 2.5 to 200 μm reveal that the optical absorption by graphene is 0.09 dB/μm with the TE mode and 0.05 dB/μm with the TM mode. The absorption in the TE mode is 1.8 times higher than that in the TM mode. An optical spectrum, theoretical analysis and Raman spectrum indicate that surfaceplasmon polaritons in graphene support TM mode light propagation.

    Original languageEnglish
    Pages (from-to)736-743
    Number of pages8
    JournalIEICE Transactions on Electronics
    VolumeE97-C
    Issue number7
    DOIs
    Publication statusPublished - 2014

    Keywords

    • Graphene
    • Optical absorption
    • Polarizer
    • Silicon photonics

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Electronic, Optical and Magnetic Materials

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  • Cite this

    Warabiy, K., Kou, R., Tanabe, S., Tsuchizawa, T., Suzuki, S., Hibino, H., Nakajima, H., & Yamada, K. (2014). Optical absorption characteristics and polarization dependence of single-layer graphene on silicon waveguide. IEICE Transactions on Electronics, E97-C(7), 736-743. https://doi.org/10.1587/transele.E97.C.736