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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 27 — Dec. 19, 2011
  • pp: 26827–26838

Design of T-shaped nanophotonic wire waveguide for optical interconnection in H-tree network

H. Kurt, I. H. Giden, and D. S. Citrin  »View Author Affiliations

Optics Express, Vol. 19, Issue 27, pp. 26827-26838 (2011)

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Nanophotonic wire waveguides play an important role for the realization of highly dense integrated photonic circuits. The miniaturization of optoelectronic devices and realization of ultra-small integrated circuits strongly demand compact waveguide branches. T-shaped versions of nanophotonic wires are the first stage of both power splitting and optical-interconnection systems based on guided-wave optics; however, the acute transitions at the waveguide junctions typically induce huge bending losses in terms of radiated modes. Both 2D and 3D finite-difference time-domain methods are employed to monitor the efficient light propagation. By introducing appropriate combinations of dielectric posts around the dielectric-waveguide junctions within the 4.096μm× 4.096μm region, we are able to reduce the bending losses dramatically and increase the transmission efficiency from low values of 18% in the absence of the dielectric posts to approximately 49% and 43% in 2D and 3D cases, respectively. These findings may lead to the implementation of such T-junctions in near-future high-density integrated photonics to deliver optical-clock signals via H-tree network.

© 2011 OSA

OCIS Codes
(130.2790) Integrated optics : Guided waves
(130.3120) Integrated optics : Integrated optics devices
(200.4650) Optics in computing : Optical interconnects
(250.5300) Optoelectronics : Photonic integrated circuits
(130.5296) Integrated optics : Photonic crystal waveguides

ToC Category:
Integrated Optics

Original Manuscript: September 6, 2011
Revised Manuscript: November 18, 2011
Manuscript Accepted: December 1, 2011
Published: December 15, 2011

H. Kurt, I. H. Giden, and D. S. Citrin, "Design of T-shaped nanophotonic wire waveguide for optical interconnection in H-tree network," Opt. Express 19, 26827-26838 (2011)

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