Title :
Whispering gallery resonator based on index profiling
Author :
Yanyan Zhou ; Feng Luan ; Di Zhu ; Xia Yu
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
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.
Keywords :
optical couplers; optical resonators; whispering gallery modes; evanescent couplers; light confinement; parabolic index profiling; resonator axial direction; shape variation; whispering gallery mode resonator; Cavity resonators; Equations; Indexes; Nonlinear optics; Optical fiber sensors; Optical resonators; gradient index profile; resonating cavity; whispering gallery mode;
Conference_Titel :
Photonics Global Conference (PGC), 2012
Conference_Location :
Singapore
Print_ISBN :
978-1-4673-2513-4
DOI :
10.1109/PGC.2012.6457986
