Light wheel confined in a purely dielectric composite waveguide | Zendy

Yu Qian Ye | Zendy; Yi Jin | Zendy; Sailing He | Zendy

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Light wheel confined in a purely dielectric composite waveguide

Author(s) -

Yu Qian Ye,

Yi Jin,

Sailing He

Publication year - 2009

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.17.004348

Subject(s) - delocalized electron , waveguide , optics , photonic crystal , materials science , dielectric , stopband , optoelectronics , slow light , physics , resonator , quantum mechanics

A properly designed composite waveguide consisting of a one-dimensional photonic crystal waveguide and a conventional dielectric waveguide is proposed for the realization of a localized "light wheel". Light confinedly rotating between the two waveguides is numerically demonstrated and explained physically in detail. A delocalized "light wheel" is found at the band gap edge caused by contra-directional coupling between the two waveguides. Because of this delocalized "light wheel" , the composite waveguide can be used to trap light as a cavity, and a quality factor of 9 x 10(3) is achieved as an example. The present structure is completely dielectric and thus easy to realize with a low loss.

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