Influence of micro-joints formed between spheres in coupled-resonator optical waveguide

Tadashi Mitsui, Tsunenobu Onodera, Yutaka Wakayama, Takeru Hayashi, Naoki Ikeda, Yoshimasa Sugimoto, Tadashi Takamasu, Hidetoshi Oikawa

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Light propagation is simulated through coupled-resonator optical waveguides (CROWs) composed of seven transparent polystyrene microspheres, including micro-joints formed between the spheres. In nanojet-induced mode (NIM) light propagation, the micro-joints increased the optical coupling between microspheres drastically, and the light confinement by individual microspheres weakened as the micro-joint diameter increases. These results suggest that we can control NIM light propagation by changing the micro-joint diameter; this amounts to a nanojet throttle valve.

Original languageEnglish
Pages (from-to)22258-22267
Number of pages10
JournalOptics Express
Issue number22
Publication statusPublished - 2011 Oct 24


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