Micro demultiplexer fabricated by self-assembly of microspheres on a patterned substrate

Tadashi Mitsui, Yutaka Wakayama, Tsunenobu Onodera, Yosuke Takaya, Hidetoshi Oikawa

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    To demonstrate light-path manipulation in arbitrary shapes, we fabricated coupled-resonator optical waveguides (CROWs) having a 90°-corner structure on a lithographically patterned substrate using a simple selforganization process. The spectra of propagation light within the CROWs were directly measured by guidecollection-mode near-field scanning optical microscopy (NSOM) techniques. The spectra revealed that the propagation light through the CROWs has a larger relative intensity of transverse-magnetic (TM) polarization mode than that of transverse-electric (TE) one, whereas Mie theory predicts the intensities of both to be nearly equal. The most plausible cause of the lower intensity in the TE modes is that light leaks out to, and is absorbed by, the patterned Si substrate, because the observable TE light in our setup goes around the microspheres in the vertical plane.

    Original languageEnglish
    Title of host publicationICTON 2009
    Subtitle of host publication11th International Conference on Transparent Optical Networks
    DOIs
    Publication statusPublished - 2009 Nov 18
    EventICTON 2009: 11th International Conference on Transparent Optical Networks - Ponta Delgada, Portugal
    Duration: 2009 Jun 282009 Jul 2

    Publication series

    NameICTON 2009: 11th International Conference on Transparent Optical Networks

    Other

    OtherICTON 2009: 11th International Conference on Transparent Optical Networks
    Country/TerritoryPortugal
    CityPonta Delgada
    Period09/6/2809/7/2

    Keywords

    • CROWs
    • Microsphere
    • NSOM
    • Patterned substrate
    • Self-assembly
    • Whispering-gallery modes

    ASJC Scopus subject areas

    • Computer Networks and Communications
    • Electrical and Electronic Engineering
    • Electronic, Optical and Magnetic Materials

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