Abstract
Whispering gallery modes in a microsphere coated with three layers of high, low, and high refractive indices (RIs) are considered. Coastal modes and inland modes, centered on the outer and inner high-RI layers, exist as different radial modes. At right values of RI and thickness of the three layers, an inland mode and a coastal mode couple to produce a radial distribution of the photonic field that resembles bonding and antibonding orbitals. The coupling occurs across a layer of the middle low-RI layer, much thicker than the wave-length of light. The coupling is analyzed in a quantum-mechanical analog of a one-dimensional particle in a double-well potential.
Original language | English (US) |
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Pages (from-to) | 1147-1149 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 32 |
Issue number | 9 |
DOIs | |
State | Published - May 1 2007 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics