Dipole-fiber systems: Radiation field patterns, effective magnetic dipoles, and induced cavity modes

Shaghik Atakaramians*, Andrey E. Miroshnichenko, Ilya V. Shadrivov, Tanya M. Monro, Yuri S. Kivshar, Shahraam V. Afshar

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    1 Citation (Scopus)

    Abstract

    We study the radiation patterns produced by a dipole placed at the surface of a nanofiber and oriented perpendicular to it, either along the radial (r-oriented) or azimuthal (Φ-oriented) directions. We find that the dipole induces an effective circular cavity-like leaky mode in the nanofiber. The first radiation peak of the Φ-oriented dipole contributes only to TE radiation modes, while the radiation of the r-oriented dipole is composed of both TE and TM radiation modes, with relative contribution depending on the refractive index of the nanofiber. We reveal that the field pattern of the first resonance of a Φ-oriented dipole is associated with a magnetic dipole mode and strong magnetic response of an optical nanofiber.

    Original languageEnglish
    Title of host publicationMicro+Nano Materials, Devices, and Systems
    EditorsStefano Palomba, Benjamin J. Eggleton
    PublisherSPIE
    ISBN (Electronic)9781628418903
    DOIs
    Publication statusPublished - 2015
    EventSPIE Micro+Nano Materials, Devices, and Applications Symposium - Sydney, Australia
    Duration: 6 Dec 20159 Dec 2015

    Publication series

    NameProceedings of SPIE - The International Society for Optical Engineering
    Volume9668
    ISSN (Print)0277-786X
    ISSN (Electronic)1996-756X

    Conference

    ConferenceSPIE Micro+Nano Materials, Devices, and Applications Symposium
    Country/TerritoryAustralia
    CitySydney
    Period6/12/159/12/15

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