Enhanced coupling to microsphere resonances with optical fibers

A. Serpengüzel, S. Arnold, G. Griffel, J. A. Lock

Research output: Contribution to journalArticlepeer-review


Morphology-dependent resonances (MDR's) of polystyrene microspheres were excited by an optical fiber coupler. For optical elimination of the air-cladding interface at the optical fiber coupler surface, the microsphere was immersed in an index-matching oil. MDR's were observed, even though the relative refractive index between the microsphere and the oil was only 1.09. The observed MDR spectra are in good agreement with the generalized Lorenz-Mie theory and the localization principle. The scattering efficiency into each MDR is estimated as a function of the impact parameter by means of generalized Lorenz-Mie theory.

Original languageEnglish (US)
Pages (from-to)790-795
Number of pages6
JournalJournal of the Optical Society of America B: Optical Physics
Issue number4
StatePublished - Apr 1997


  • Generalized Lorenz-Mie theory
  • Guided waves
  • Impact parameter
  • Localization
  • Microparticle
  • Morphology-dependent resonances
  • Photonic atom
  • Scattering
  • Whispering-gallery modes

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics


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