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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 28, Iss. 3 — Mar. 1, 2011
  • pp: 495–501

Highly efficient and broadband light transmission in 90 ° nanophotonic wire waveguide bends

H. Kurt, I. H. Giden, and K. Ustun  »View Author Affiliations


JOSA B, Vol. 28, Issue 3, pp. 495-501 (2011)
http://dx.doi.org/10.1364/JOSAB.28.000495


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Abstract

Nanophotonic wire silicon waveguides are indispensable components of integrated photonic circuits. Because of the inherent nature of these waveguides, such as narrow width and high-index contrast, corners with large bending radii are inevitable for efficient light transmission with small loss values, which, in turn, impedes the miniaturization of photonic components. To alleviate huge bending losses of a right angle waveguide, we designed a structure incorporating a two-dimensional (2D) photonic crystal, along with careful engineering of the individual cell at the corner. The low transmission efficiency of around 55% can be increased to 99% by implementing 2D analysis. The implementation of the computationally heavy three-dimensional finite-difference time domain method, on the other hand, produces power transmission efficiencies of approximately 52% and 92% for a regular wire bend and optimized structure, respectively. The method asserts compact size and guarantees broadband operation, which, in turn, may assist the implementation of optical interconnects to distribute effectively optical clock signals through the chip.

© 2011 Optical Society of America

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(130.2790) Integrated optics : Guided waves
(130.5296) Integrated optics : Photonic crystal waveguides

ToC Category:
Integrated Optics

History
Original Manuscript: July 19, 2010
Revised Manuscript: December 2, 2010
Manuscript Accepted: December 24, 2010
Published: February 25, 2011

Citation
H. Kurt, I. H. Giden, and K. Ustun, "Highly efficient and broadband light transmission in 90° nanophotonic wire waveguide bends," J. Opt. Soc. Am. B 28, 495-501 (2011)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-28-3-495

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