Observation of light propagation across a 90° corner in chains of microspheres on a patterned substrate

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

    Research output: Contribution to journalArticlepeer-review

    34 Citations (Scopus)

    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. The spectra of propagation light within the CROWs were directly measured by guide-collection-mode near-field scanning optical microscopy. The spectra revealed that the propagation light through the CROWs has a larger transverse-magnetic polarization mode than a transverse-electric (TE) one. The most plausible cause of the lower intensity in the TE mode is that light leaks out to the Si substrate.

    Original languageEnglish
    Pages (from-to)1189-1191
    Number of pages3
    JournalOptics Letters
    Volume33
    Issue number11
    DOIs
    Publication statusPublished - 2008 Jun 1

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

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