Whispering gallery resonator based on index profiling

• المؤلفون الرئيسيون: Luan, Feng, Zhu, Di, Yu, Xia, Zhou, Yanyan
• مؤلفون آخرون: School of Electrical and Electronic Engineering
• التنسيق: Conference or Workshop Item
• اللغة: English
• منشور في: 2013
• الوصول للمادة أونلاين: https://hdl.handle.net/10356/97997; http://hdl.handle.net/10220/12198
• المؤسسة: Nanyang Technological University

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.