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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 1 — Jan. 7, 2008
  • pp: 287–294

Optics InfoBase > Optics Express > Volume 16 > Issue 1 > Page 287

Lateral leakage in symmetric SOI rib-type slot waveguides

Paul Muellner, Norman Finger, and Rainer Hainberger  »View Author Affiliations


Optics Express, Vol. 16, Issue 1, pp. 287-294 (2008)
http://dx.doi.org/10.1364/OE.16.000287


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Abstract

We theoretically investigate the lateral leakage in fully symmetric horizontal rib-type slot waveguides caused by coupling between the TM-like slot mode and a TE slab mode. The leakage mechanism is described and the dependence on the geometry parameters is studied using the variational mode-matching method. In addition, the effective-index method to solve the transcendent eigenmode equation of rib-type slot waveguides is applied and compared with the aforementioned rigorous numerical method. We show that this semi-analytical approach yields results with sufficiently high accuracy. For design purposes the influence of structural deviations caused by the fabrication process is studied. We show that the usable range of the geometry parameters can be widely extended by exploiting leakage suppressing mechanisms.

© 2008 Optical Society of America

OCIS Codes
(000.4430) General : Numerical approximation and analysis
(130.3120) Integrated optics : Integrated optics devices
(230.7390) Optical devices : Waveguides, planar

ToC Category:
Integrated Optics

History
Original Manuscript: November 15, 2007
Revised Manuscript: December 20, 2007
Manuscript Accepted: December 23, 2007
Published: January 4, 2008

Citation
Paul Muellner, Norman Finger, and Rainer Hainberger, "Lateral leakage in symmetric SOI rib-type slot waveguides," Opt. Express 16, 287-294 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-1-287


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