Whispering gallery resonator based on index profiling
Date of Issue2012
Photonics Global Conference (2012 : Singapore)
School of Electrical and Electronic Engineering
Singapore Institute of Manufacturing Technology
A novel whispering gallery mode (WGM) resonator that relies on index profiling instead of shape variation to confine light is proposed and theoretically studied. Analytical derivations show that a parabolic index profile along the resonator axial direction is able to confine light within its two caustics. This enables efficient coupling of WGM by applying evanescent couplers at the caustics.
© 2012 IEEE.