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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 21 — Jul. 20, 2004
  • pp: 4244–4249

Three-dimensional analysis of a hybrid photonic crystal-conventional waveguide 90° bend

Jingbo Cai, Gregory P. Nordin, Seunghyun Kim, and Jianhua Jiang  »View Author Affiliations


Applied Optics, Vol. 43, Issue 21, pp. 4244-4249 (2004)
http://dx.doi.org/10.1364/AO.43.004244


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Abstract

We present a three-dimensional (3D) analysis of a hybrid photonic crystal-conventional waveguide 90° bend proposed previously [Opt. Express 10, 1334 (2002)] as an ultracompact component for large-scale planar lightwave circuit integration. Both rigorous 3D finite-difference time-domain modeling and a simple perfect mirror model analysis were carried out for different Si post heights in the photonic crystal region. Results show that the bend efficiency increases rapidly with Si post height. For a post height of 6.5 μm, this structure yields a bend efficiency of 97.3% at a wavelength of 1.55 μm for 90° bends in 2 μm × 2 μm square channel conventional waveguides with a refractive index contrast of 3.55%, which is very close to the bend efficiency of 98.2% for the corresponding two-dimensional problem. Our 3D analysis permits the examination of issues such as out-of-plane scattering loss and the effects of finite Si post height that are not considered in two dimensions.

© 2004 Optical Society of America

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(130.1750) Integrated optics : Components
(130.2790) Integrated optics : Guided waves
(130.3120) Integrated optics : Integrated optics devices
(250.5300) Optoelectronics : Photonic integrated circuits

History
Original Manuscript: September 2, 2003
Revised Manuscript: March 17, 2004
Published: July 20, 2004

Citation
Jingbo Cai, Gregory P. Nordin, Seunghyun Kim, and Jianhua Jiang, "Three-dimensional analysis of a hybrid photonic crystal-conventional waveguide 90° bend," Appl. Opt. 43, 4244-4249 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-21-4244

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