Highly efficient optical coupling and transport phenomena in chains of dielectric microspheres
Optics Letters, Vol. 31, Issue 3, pp. 389-391 (2006)
http://dx.doi.org/10.1364/OL.31.000389
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Abstract
Using the generalized multiparticle Mie theory, we investigate optical coupling and transport through chains of dielectric microspheres. We identify two distinct coupling mechanisms of optical transport in terms of the coupling efficiency between neighboring microspheres, namely, evanescent coupling and nanojet coupling. We demonstrate that perfect whispering gallery mode propagation through a chain of evanescently coupled microspheres can be achieved. However, optical coupling and transport through a chain of nanojet-inducing microspheres is less efficient due to the radiative nature of photonic nanojets. Understanding these two optical coupling mechanisms is critical for selecting appropriate microspheres to build coupled resonator optical waveguides and other photon-manipulation devices for effective and low-loss guiding of photons.
© 2006 Optical Society of America
OCIS Codes
(230.3990) Optical devices : Micro-optical devices
(230.5750) Optical devices : Resonators
(230.7370) Optical devices : Waveguides
(290.4020) Scattering : Mie theory
(290.4210) Scattering : Multiple scattering
ToC Category:
Optical Devices
History
Original Manuscript: September 6, 2005
Revised Manuscript: October 9, 2005
Manuscript Accepted: October 11, 2005
Citation
Zhigang Chen, Allen Taflove, and Vadim Backman, "Highly efficient optical coupling and transport phenomena in chains of dielectric microspheres," Opt. Lett. 31, 389-391 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-3-389
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