We experimentally and numerically study the dynamics of whispering gallery modes slowly propagating within the cladding of an optical fiber near its end facet. We demonstrated that modes reflect from the fiber cleave. The reflection coefficient appears to reach 70% for the sample under study. Use of a facet provides a simple method to confine the axial propagation of the modes.

Original languageEnglish
Pages (from-to)34530-34535
Number of pages6
JournalOptics Express
Issue number23
Publication statusPublished - 9 Nov 2020

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