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Experimental characterization of dielectric-loaded plasmonic waveguide-racetrack resonators at near-infrared wavelengths |
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| Authors: | C. Garcia V. Coello Z. Han I. P. Radko S. I. Bozhevolnyi |
| Affiliation: | 1. Doctorado en Ingeniería Física Industrial, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo León, 66450, Mexico 2. Institute of Technology and Innovation (ITI), University of Southern Denmark, Niels Bohrs Allé 1, 5230, Odense M, Denmark 3. Centro de Investigación Científica y Educación Superior de Ensenada, PIIT, Apodaca, Nuevo León, 66600, Mexico 4. Center for THz Research, China Jiliang University, Hangzhou, 310018, China |
| Abstract: | Dielectric-loaded plasmonic waveguide-racetrack resonators (WRTRs) were designed and fabricated for operating at near-infrared wavelengths (750–850 nm) and characterized using leakage radiation microscopy. The transmission spectra of the WRTRs are found experimentally and compared to the calculated analytical expression. The wavelength-dependent parameters of the analytical expression, i.e. the propagation length and effective-index dispersion, were also estimated experimentally by leakage radiation imaging of direct and Fourier space, respectively. The fabricated structures exhibited high extinction ratio (～20 dB) and good agreement between calculated and measured transmission values. |
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