Suppression of higher-order radial whispering gallery modes in waveguide-coupled microcavity disk resonators

Susan C. Hagness*, Deana Rafizadeh, Seng-Tiong Ho, Allen Taflove

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Methods for higher-order radial whispering gallery modes (WGM) suppression in a microdisk coupled to two straight adjacent waveguides are investigated using finite difference time domain (FDTD) simulations. As the radial order of the WGM increases, the mode width increases and the peak of the mode shifts toward the center of disk. The simulation showed that the disk and the waveguides have a refractive index of 3.2. Once the optimum waveguide width is determined, the gap size can be readjusted to give the best fundamental mode transmission characteristics.

Original languageEnglish (US)
Pages (from-to)160-161
Number of pages2
JournalConference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS
Volume2
StatePublished - Dec 1 1997

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Industrial and Manufacturing Engineering

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