Characterization of high index microsphere resonators in fiber-integrated microfluidic platforms

Oleksiy Svitelskiy, Dongning Sun, Arash Darafsheh, Mikhail Sumetsky, Anatoly Lupu, Maria Tchernycheva, Vasily N. Astratov

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

4 Scopus citations


We investigate high-Q microsphere resonators with whispering gallery modes using a tapered optical microfiber immersed in a liquid inside a microfluidic platform. The strength of the coupling between the cavity and the microfiber taper is shown to depend on the contact position of the microsphere along the taper and on the refractive index contrast between the microsphere and the liquid environment. We demonstrate that barium titanate glass beads with index around 1.9 are promising candidates for developing sensor and optomechanical applications of such resonator systems.

Original languageEnglish
Title of host publicationLaser Resonators and Beam Control XIII
StatePublished - 2011
EventLaser Resonators and Beam Control XIII - San Francisco, CA, United States
Duration: Jan 23 2011Jan 25 2011

Publication series

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


ConferenceLaser Resonators and Beam Control XIII
Country/TerritoryUnited States
CitySan Francisco, CA


  • Optical coupling
  • Optical resonators
  • Whispering gallery modes


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