Title :
Restoring whispering gallery modes with transformation optics
Author :
Yushin Kim;Soo-Young Lee;Jung-Wan Ryu;Inbo Kim;Jae-Hyung Han;Heung-Sik Tae;Muhan Choi;Bumki Min
Author_Institution :
Korea Advanced Institute of Science and Technology, Department of mechanical engineering, 291 Daehak-ro Yuseong-gu, 305-338, Daejeon, South Korea
Abstract :
Whispering gallery modes (WGMs) have ultra-high quality factor but only non-directional light emission property. We suggest a novel way to restore WGM in resonant cavity of deformed boundary shape with Transformation optics. Conformal mapping make it possible with only density controlled isotropic material. FEM and microwave near-field scanning result prove that our idea is working. It is expected to be applied to wide range of optical cavity.
Keywords :
"Cavity resonators","Optics","Refractive index","Q-factor","Conformal mapping","Shape","Microwave theory and techniques"
Conference_Titel :
Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), 2015 9th International Congress on
DOI :
10.1109/MetaMaterials.2015.7342554
