IEEE Photonics Technology Letters
Optical Mode Splitting in Ring-Shaped Hollow Bragg Cavity
Jiangfeng Xu
Abstract
We investigate the optical modes of hollow ring resonator with omnidirectional reflector cladding by numerical method. We demonstrate that each TM0mlmode (or TE0mlmode) can split into two modes whose wavelengths are very close. The doublet effect is caused by the symmetry breaking at circular cross section when a straight waveguide is curled into a ring shape. The ring-shaped hollow Bragg cavity provides a platform to research the interaction of Rydberg atoms and light mode.