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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 33, Iss. 17 — Sep. 1, 2008
  • pp: 2008–2010

Reduced lateral leakage losses of TM-like modes in silicon-on-insulator ridge waveguides

Masanori Koshiba, Kuniaki Kakihara, and Kunimasa Saitoh  »View Author Affiliations


Optics Letters, Vol. 33, Issue 17, pp. 2008-2010 (2008)
http://dx.doi.org/10.1364/OL.33.002008


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Abstract

We numerically investigate the lateral leakage loss behavior for TM-like modes in silicon-on-insulator ridge waveguides. In order to improve the leakage loss properties, we propose a novel ridge waveguide structure where a dimple is introduced at the ridge center. It is shown that the ridge waveguide with a dimple is both low loss and fabrication tolerant. This behavior is predicted by not only an accurate finite-element-based analysis but also a simple, phenomenological effective-index-based analysis.

© 2008 Optical Society of America

OCIS Codes
(000.4430) General : Numerical approximation and analysis
(130.0130) Integrated optics : Integrated optics
(230.3120) Optical devices : Integrated optics devices
(230.7390) Optical devices : Waveguides, planar

ToC Category:
Optical Devices

History
Original Manuscript: June 5, 2008
Revised Manuscript: July 23, 2008
Manuscript Accepted: July 23, 2008
Published: August 29, 2008

Citation
Masanori Koshiba, Kuniaki Kakihara, and Kunimasa Saitoh, "Reduced lateral leakage losses of TM-like modes in silicon-on-insulator ridge waveguides," Opt. Lett. 33, 2008-2010 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-17-2008


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References

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