title: Vertically coupled whispering-gallery-mode resonator waveguide.
abstract: We theoretically describe a novel configuration of a vertically coupled whispering-gallery-mode resonator waveguide. The waveguide is formed as a chain of doughnut-shaped low-contrast ripples on the surface of a vertical cylinder made from an optically transparent material. One can manipulate the properties of the waveguide by changing the shape of the resonators and the separation distance between them. Application of the structure as an optical delay line is discussed.
authors.affiliation: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109-8099, USA. Andry.Matsko@jpl.nasa.gov
authors.forename: Andrey B
authors.initials: AB
authors.lastname: Matsko
authors.forename: Anatoliy A
authors.initials: AA
authors.lastname: Savchenkov
authors.forename: Lute
authors.initials: L
authors.lastname: Maleki