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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 12 — Jun. 4, 2012
  • pp: 13189–13194

Effect of index contrasts in the wide spectral-range control of slot waveguide dispersion

Hyungsuk Ryu, Jaehun Kim, Young Min Jhon, Seok Lee, and Namkyoo Park  »View Author Affiliations

Optics Express, Vol. 20, Issue 12, pp. 13189-13194 (2012)

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Here we examine the waveguide dispersion property of slot waveguides, approaching/analyzing the given problem with respect to the normalized index contrast, Δnslot-core/ncore and Δncore-clad/ncore between adjacent layers. For two index contrasts of concern, it is found that their contributions to slot waveguide dispersions are substantially different, with Δnslot-core and Δncore-clad each acting preferentially on short- and long-wavelength regions. Additional degrees of freedom in the waveguide design, such as the effect of absolute refractive index and waveguide geometry are also investigated to enable flexible tuning of the waveguide dispersion. Focusing on the unexplored regime of slot waveguides design in short wavelength (<1 μm), we also study the feasibility of low-threshold super-continuum sources using a Ta2O5/TiO2/silica slot, either of two-octave spectral width (0.467–1.581 μm), or of one-octave, near unity coherence |g12(1)| = 1.

© 2012 OSA

OCIS Codes
(000.4430) General : Numerical approximation and analysis
(190.4390) Nonlinear optics : Nonlinear optics, integrated optics
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons
(230.3120) Optical devices : Integrated optics devices
(320.7110) Ultrafast optics : Ultrafast nonlinear optics

ToC Category:
Nonlinear Optics

Original Manuscript: April 5, 2012
Revised Manuscript: May 15, 2012
Manuscript Accepted: May 15, 2012
Published: May 25, 2012

Hyungsuk Ryu, Jaehun Kim, Young Min Jhon, Seok Lee, and Namkyoo Park, "Effect of index contrasts in the wide spectral-range control of slot waveguide dispersion," Opt. Express 20, 13189-13194 (2012)

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