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In this article, we optimize the coupling efficiency from a GaAs microdisk resonator into a single mode spiral waveguide. A classical microdisk resonator coupling light into a nonevanescent straight waveguide reaches a typical coupling efficiency of 67%. We show that the introduction of a spiral waveguide that works both as a waveguide and circular Bragg reflector can improve such efficiency to almost 90%. The same structure with the addition of a taper can couple up to 80% of the generated power into a slot waveguide.
Published in:
Journal of Applied Physics
(Volume:107
,
Issue:
4
)
Date of Publication: Feb 2010
- Page(s):
- 043105 - 043105-8
- ISSN :
- 0021-8979
- Digital Object Identifier :
- 10.1063/1.3309748
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 25 February 2010
- Issue Date :
- Feb 2010
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