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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 15 — Jul. 23, 2007
  • pp: 9450–9457

Photonic crystal circular-shaped microcavity and its uniform cavity-waveguide coupling property due to presence of whispering gallery mode

Po-Tsung Lee, Tsan-Wen Lu, Chia-Ming Yu, and Chung-Chuan Tseng  »View Author Affiliations


Optics Express, Vol. 15, Issue 15, pp. 9450-9457 (2007)
http://dx.doi.org/10.1364/OE.15.009450


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Abstract

In this report, we investigate a photonic crystal circular-shaped microcavity (removing seven air holes) sustaining whispering-gallery mode (WGM) by shifting the 12 nearest air holes according to the concept of cavity-shaping in micro-disk and micro-gear lasers. The WGM modal characteristics are investigated by three-dimensional (3D) finite-difference time-domain (FDTD) simulations. From well-fabricated devices and simulated results, we obtain and identify WGM single-mode lasing with low threshold and high measured quality factor. By inserting additional waveguides, we also investigate its uniform coupling behaviors in different waveguide-cavity-waveguide geometries in both FDTD simulations and experiments.

© 2007 Optical Society of America

OCIS Codes
(140.5960) Lasers and laser optics : Semiconductor lasers
(140.3945) Lasers and laser optics : Microcavities
(050.5298) Diffraction and gratings : Photonic crystals

ToC Category:
Photonic Crystals

History
Original Manuscript: May 31, 2007
Revised Manuscript: July 12, 2007
Manuscript Accepted: July 12, 2007
Published: July 16, 2007

Citation
Po-Tsung Lee, Tsan-Wen Lu, Chia-Min Yu, and Chung-Chuan Tseng, "Photonic crystal circular-shaped microcavity and its uniform cavity-waveguide coupling property due to presence of whispering gallery mode," Opt. Express 15, 9450-9457 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-15-9450


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References

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