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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
Nonlinear plasmonic slot waveguides.
Arthur R Davoyan1, Ilya V Shadrivov, Yuri S Kivshar
1Nonlinear Physics Center, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200, Australia. ard124@rsphysse.anu.edu.au
Optics Express
|December 24, 2008
Summary
We investigated nonlinear modes in subwavelength slot waveguides. The symmetric mode breaks symmetry, localizing to one interface, while antisymmetric modes split into new families.
Area of Science:
- Nonlinear optics
- Condensed matter physics
- Photonics
Background:
- Subwavelength slot waveguides confine light to nanoscale dimensions.
- Nonlinear dielectric materials offer unique light-matter interaction possibilities.
- Understanding nonlinear guided modes is crucial for advanced optical devices.
Purpose of the Study:
- To investigate the behavior of nonlinear modes in a subwavelength slot waveguide.
- To analyze the symmetry-breaking bifurcations of these modes.
- To explore the formation of new families of nonlinear guided modes.
Main Methods:
- Numerical analysis of dispersion diagrams for nonlinear guided modes.
- Theoretical modeling of light propagation in nonlinear dielectric structures.
- Simulation of mode localization and splitting phenomena.
Main Results:
- The symmetric nonlinear guided mode undergoes symmetry breaking, localizing to one metal-dielectric interface.
- Antisymmetric nonlinear guided modes can split into two distinct families.
- Dispersion diagrams reveal complex mode structures arising from nonlinearity.
Conclusions:
- Nonlinearity in subwavelength slot waveguides leads to rich mode phenomena, including symmetry breaking and mode splitting.
- These findings are significant for designing novel nonlinear photonic devices.
- The study provides insights into controlling light localization at interfaces.
