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Proceedings Article

Theory and numerical design of coupled-resonator optical waveguide sections with bends

[+] Author Affiliations
Svetlana V. Pishko, Svetlana V. Boriskina

V. Karazin Kharkov National Univ. (Ukraine)

Proc. SPIE 6645, Nanoengineering: Fabrication, Properties, Optics, and Devices IV, 664521 (September 11, 2007); doi:10.1117/12.734150
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From Conference Volume 6645

  • Nanoengineering: Fabrication, Properties, Optics, and Devices IV
  • Elizabeth A. Dobisz; Louay A. Eldada
  • San Diego, California, USA | August 26, 2007

abstract

We present a theoretical analysis and numerical design of bent and branched sections of coupled resonator optical waveguides (CROWs) composed of side-coupled whispering-gallery (WG) mode microdisk resonators. Our analysis is based on a rigorous Muller boundary integral equations method that enables accurate treatment of CROWs consisting of both identical and different microdisks as well as studying CROW finite-size effects. Differences in WG modes coupling in the vicinity of bends in CROWs composed of optically-large and wavelength-scale microcavities are revealed and discussed. We propose possible ways of pre- and post-fabrication tuning of bent CROW sections. At the pre-fabrication design stage, adjusting the radius of the microdisk positioned at the CROW bend may yield significant reduction of bend losses for any chosen CROW bend angle. Post-fabrication tuning capability of the designed structures is also discussed.

© (2007) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Svetlana V. Pishko and Svetlana V. Boriskina
"Theory and numerical design of coupled-resonator optical waveguide sections with bends", Proc. SPIE 6645, Nanoengineering: Fabrication, Properties, Optics, and Devices IV, 664521 (September 11, 2007); doi:10.1117/12.734150; http://dx.doi.org/10.1117/12.734150


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