Transmittance and near-field characterization of sub-wavelength tapered optical fibers

We have produced high transmission sub-wavelength tapered optical fibers for the purpose of whispering gallery mode coupling in fused silica microcavities at 780 nm. A detailed analysis of the fiber transmittance evolution during tapering is demonstrated to reflect precisely the mode coupling and cu...

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Bibliographic Details
Published inarXiv.org
Main Authors Orucevic, Fedja, Lefèvre-Seguin, Valérie, Hare, Jean
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 20.02.2008
Subjects
Coupling
Evanescent waves
Fused silica
Mapping
Microcavities
Optical fibers
Silicon dioxide
Tapering
Transmittance
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Summary:We have produced high transmission sub-wavelength tapered optical fibers for the purpose of whispering gallery mode coupling in fused silica microcavities at 780 nm. A detailed analysis of the fiber transmittance evolution during tapering is demonstrated to reflect precisely the mode coupling and cutoff in the fiber. This allows to control the final size, the number of guided modes and their effective index. These results are checked by evanescent wave mapping measurements on the resulting taper.
ISSN:2331-8422