Optimization of coupling condition in distance between the sphere and the tapered fiber for diameter measurement of microsphere by using WGM resonance

Atsushi Adachi, Masaki Michihata, Terutake Hayashi, Yasuhiro Takaya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study, it was proposed that whispering gallery mode (WGM) resonances was applied for diameter measurement of microsphere. WGM resonances were excited in a microsphere by introducing light through tapered fiber that thinned optical fiber to a few micrometers. Resonance wavelengths could be measured by monitoring intensity of the transmitted light of tapered fiber, since the light is strongly coupled to the microsphere at the resonance wavelengths. Therefore it is important to address the coupling conditions in order to measure WGM resonances accurately. Thus, optimization of the coupling is key issue to determine the diameter of a microsphere. Numerical analysis was implemented to estimate the coupling coefficients of each modes of WGM. Then the coupling was conducted experimentally as parameter was distance between the sphere and the tapered fiber.

Original languageEnglish
Title of host publicationProgress in Optomechatronic Technologies - Proceedings of the 2013 International Symposium on Optomechatronic Technologies
PublisherSpringer Verlag
Pages63-72
Number of pages10
Volume306 LNEE
ISBN (Print)9783319057101
DOIs
Publication statusPublished - 2014
Externally publishedYes
Event2013 International Symposium on Optomechatronic Technologies - Jeju Island, Korea, Republic of
Duration: Oct 28 2013Oct 30 2013

Publication series

NameLecture Notes in Electrical Engineering
Volume306 LNEE
ISSN (Print)18761100
ISSN (Electronic)18761119

Other

Other2013 International Symposium on Optomechatronic Technologies
CountryKorea, Republic of
CityJeju Island
Period10/28/1310/30/13

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering

Cite this

Adachi, A., Michihata, M., Hayashi, T., & Takaya, Y. (2014). Optimization of coupling condition in distance between the sphere and the tapered fiber for diameter measurement of microsphere by using WGM resonance. In Progress in Optomechatronic Technologies - Proceedings of the 2013 International Symposium on Optomechatronic Technologies (Vol. 306 LNEE, pp. 63-72). (Lecture Notes in Electrical Engineering; Vol. 306 LNEE). Springer Verlag. https://doi.org/10.1007/978-3-319-05711-8_7