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Radiation loss of coupled-resonator waveguides in photonic-crystal slabs

Appl. Phys. Lett. 89, 191114 (2006); doi:10.1063/1.2387131

Published 8 November 2006

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M. L. Povinelli and Shanhui Fan
Ginzton Laboratory, Stanford University, Stanford, California 94305 and Department of Electrical Engineering, Stanford University, Stanford, California 94305
The authors characterize the intrinsic radiation loss of coupled-resonator optical waveguides by defining a waveguide-quality factor Q. They find that tuning an isolated resonator in a photonic-crystal slab to maximize its Q can also increase the waveguide Q. Due to interference between different resonators, the waveguide can have far lower loss than the isolated cavity; in other cases it can have far greater loss. They show that the dependence of waveguide Q on wave vector can largely be predicted by the shifting of the light cone within a tight-binding model. ©2006 American Institute of Physics
History: Received 29 August 2006; accepted 30 September 2006; published 8 November 2006
Permalink: http://link.aip.org/link/?APPLAB/89/191114/1
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KEYWORDS and PACS

Keywords
PACS
  • 42.79.Gn
    Optical waveguides and couplers
  • 42.70.Qs
    Photonic bandgap materials
  • YEAR: 2006

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ISSN:
0003-6951 (print)   1077-3118 (online)
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