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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 34 — Dec. 1, 2009
  • pp: 6547–6552

Control of optical mode properties in cross-slot waveguides

Amit Khanna, Antti Säynätjoki, Ari Tervonen, and Seppo Honkanen  »View Author Affiliations

Applied Optics, Vol. 48, Issue 34, pp. 6547-6552 (2009)

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A cross-slot waveguide geometry provides high confinement of the mode field of both fundamental quasi-TE and quasi-TM modes in geometrically perpendicular slots. A unique possibility to tailor optical mode characteristics such as effective index and confinement factor quite independently for the two polarizations with geometric and material parameters is shown. Nonbirefringent cross-slot geometries are presented. Fabrication related tolerances of the cross-slot geometry for low birefringence operation are studied. Means to externally tune the birefringence by a thermo-optic effect is also analyzed. Fabrication of a cross-slot waveguide test structure is demonstrated.

© 2009 Optical Society of America

OCIS Codes
(030.4070) Coherence and statistical optics : Modes
(130.2790) Integrated optics : Guided waves
(130.3120) Integrated optics : Integrated optics devices
(230.7390) Optical devices : Waveguides, planar
(260.1440) Physical optics : Birefringence
(080.2208) Geometric optics : Fabrication, tolerancing

ToC Category:
Integrated Optics

Original Manuscript: August 10, 2009
Revised Manuscript: October 27, 2009
Manuscript Accepted: October 30, 2009
Published: November 20, 2009

Amit Khanna, Antti Säynätjoki, Ari Tervonen, and Seppo Honkanen, "Control of optical mode properties in cross-slot waveguides," Appl. Opt. 48, 6547-6552 (2009)

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