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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 20 — Jul. 10, 2006
  • pp: 4941–4946

Characteristic analysis of nanosilicon rectangular waveguides for planar light-wave circuits of high integration

Daoxin Dai, Yaocheng Shi, and Sailing He  »View Author Affiliations


Applied Optics, Vol. 45, Issue 20, pp. 4941-4946 (2006)
http://dx.doi.org/10.1364/AO.45.004941


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Abstract

When a full-vectorial finite-difference method is used, rectangular Si waveguides can be characterized for planar light-wave circuits of high integration. The single-mode condition for a rectangular Si waveguide is obtained first. The birefringence, which can be adjusted by modifying the thickness of the cladding layer, is also studied. For a nano-Si rectangular waveguide the pure bending loss is very small even for an ultrasmall bending radius (e.g., a few micrometers), and the transition loss becomes dominant. The width and height are optimized to minimize the bending radius for the requirement that the bending loss is smaller than 0.1 dB. Finally the coupling between two parallel straight waveguides is analyzed, and it is shown that there is an optimal width for the maximal coupling length.

© 2006 Optical Society of America

OCIS Codes
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(130.3120) Integrated optics : Integrated optics devices

History
Original Manuscript: August 24, 2005
Revised Manuscript: November 11, 2005
Manuscript Accepted: November 19, 2005

Citation
Daoxin Dai, Yaocheng Shi, and Sailing He, "Characteristic analysis of nanosilicon rectangular waveguides for planar light-wave circuits of high integration," Appl. Opt. 45, 4941-4946 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-20-4941

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