Using iterative methods we demonstrate that, for a structure consisting of <i>N</i>-coupled microspheres or ring resonators, the morphology-dependent resonances split into <i>N</i> higher-<i>Q</i> modes, in direct analogy with other types of oscillators. Moreover, for odd numbers of identical lossless coupled rings, the circulating intensity in the innermost ring increases exponentially with <i>N</i> when there is strong coupling to even-numbered rings and weak coupling to odd-numbered rings.
© 2003 Optical Society of America
(130.2790) Integrated optics : Guided waves
(190.3970) Nonlinear optics : Microparticle nonlinear optics
(230.4170) Optical devices : Multilayers
(230.5750) Optical devices : Resonators
(290.4020) Scattering : Mie theory
David D. Smith, Hongrok Chang, and Kirk A. Fuller, "Whispering-gallery mode splitting in coupled microresonators," J. Opt. Soc. Am. B 20, 1967-1974 (2003)