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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 20 — Oct. 3, 2005
  • pp: 7748–7759

Nonuniform photonic crystal taper for high-efficiency mode coupling

E. H. Khoo, A. Q. Liu, and J. H. Wu  »View Author Affiliations

Optics Express, Vol. 13, Issue 20, pp. 7748-7759 (2005)

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A nonuniform-shape photonic crystal taper integrated with a single-mode optical fiber and a photonic crystal waveguide for high-efficiency mode coupling is presented. The curvature of the tapering section is varied by the parameter α. For values of α set to 2 and 0.5, concave and convex tapers are obtained, respectively. Numerical calculations yield an average coupling efficiency greater than 97% at a short taper length of 20.52 μm for the convex-shape taper. Subsequently, the value of the parameter α is varied for investigating the effects of curvature on coupling efficiency and compactness of different types of taper.

© 2005 Optical Society of America

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(230.7380) Optical devices : Waveguides, channeled
(250.5300) Optoelectronics : Photonic integrated circuits

ToC Category:
Research Papers

Original Manuscript: August 23, 2005
Revised Manuscript: September 8, 2005
Published: October 3, 2005

E. Khoo, A. Liu, and J. Wu, "Nonuniform photonic crystal taper for high-efficiency mode coupling," Opt. Express 13, 7748-7759 (2005)

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