Radially graded index whispering gallery mode resonator for penetration enhancement

• Main Authors: Zhu, Di, Zhou, Yanyan, Yu, Xia, Shum, Perry Ping, Luan, Feng
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2013
• Subjects: DRNTU::Engineering::Electrical and electronic engineering
• Online Access: https://hdl.handle.net/10356/99602; http://hdl.handle.net/10220/11023
• Institution: Nanyang Technological University

This paper theoretically analyzes a hollow cylindrical whispering gallery mode resonator with radially inhomogeneous cladding. We propose an index profile of n(r) = b/r to enhance field penetration towards the resonator core. With such index profile, externally coupled evanescent wave can easily pen...