Tuning of zero group velocity dispersion in infiltrated vertical silicon slot waveguides

In this work the design of Si / hybrid waveguides which contain a vertical infiltrated slot is studied. The case of slots infiltrated with a χ³ nonlinear material of relatively high refractive index (e.g. chalcogenide glasses) is specifically discussed. An optimized waveguide geometry with periodic...

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Bibliographic Details
Published in:Optics express 2013-01, Vol.21 (2), p.1741-1750
Main Authors: Nolte, Peter W, Bohley, Christian, Schilling, Jörg
Format: Article
Language:English
Subjects:
Computer-Aided Design
Equipment Design
Equipment Failure Analysis
Light
Refractometry - instrumentation
Scattering, Radiation
Silicon - chemistry
Surface Plasmon Resonance - instrumentation
Surface Plasmon Resonance - methods
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Summary:In this work the design of Si / hybrid waveguides which contain a vertical infiltrated slot is studied. The case of slots infiltrated with a χ³ nonlinear material of relatively high refractive index (e.g. chalcogenide glasses) is specifically discussed. An optimized waveguide geometry with periodic refractive index modulation, a nonlinear figure of merit > 1 and minimum effective mode cross section is presented. Introducing a periodic refractive index variation along the waveguide allows the adjustment of the group velocity dispersion (GVD). Choosing the period accordingly, the phase matching condition for degenerate four wave mixing (GVD = 0) can be fulfilled at virtually any desired frequency and independently from the fixed optimized waveguide cross section.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.21.001741