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Detuned-resonator induced transparency in dielectric-loaded plasmonic waveguides
Zhanghua Han1, Cesar E Garcia-Ortiz, Ilya P Radko
1Department of Technology and Innovation, University of Southern Denmark, Odense, Denmark. zhh@iti.sdu.dk
Optics Letters
|March 19, 2013
Summary
We demonstrated detuned-resonator induced transparency using plasmonic waveguides. This technique achieved near-infrared light control with asymmetric transmission profiles, matching simulations.
Area of Science:
- Optics and Photonics
- Plasmonics
- Waveguide Engineering
Background:
- Resonator-induced transparency (RIT) is a quantum interference effect.
- Dielectric-loaded surface plasmon polariton (DLSPP) waveguides offer subwavelength light confinement.
- Controlling light propagation in waveguides is crucial for integrated photonics.
Purpose of the Study:
- To experimentally demonstrate detuned-resonator induced transparency (DRIT).
- To investigate DRIT in the near-infrared spectrum using DLSPP waveguides.
- To analyze the transmission spectra and profiles of the DRIT system.
Main Methods:
- Fabrication of DLSPP waveguides with side-coupled racetrack resonators.
- Experimental measurement of transmission spectra using leakage radiation microscopy.
- Full-wave numerical simulations for comparison with experimental data.
Main Results:
- Successful experimental demonstration of DRIT at ~800 nm.
- Observed transmission spectra with local maxima and asymmetric profiles.
- Experimental results showed good agreement with numerical simulations.
Conclusions:
- DRIT is achievable in near-infrared DLSPP waveguide systems.
- The asymmetric transmission profiles provide a method for light manipulation.
- The findings support the potential of DLSPP waveguides for integrated optical devices.
