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Experimental characterization of dielectric-loaded plasmonic waveguide-racetrack resonators at near-infrared wavelengths

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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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Acknowledgements

Two of us (C.G. and V.C.) acknowledge financial support from the Facultad de Ciencias Fisico-Matematicas-UANL as well as from CONACyT project CB-2009-01, 127589 and scholarship 228959. The authors also appreciate the support of the Danish Council for Independent Research (FTP Project No. 09-072949 ANAP). Z.H would like to acknowledge the support from the National Natural Science Foundation of China (Grant No. 61107042).

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Authors and Affiliations

  1. Doctorado en Ingeniería Física Industrial, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo León, 66450, Mexico

    C. Garcia

  2. Institute of Technology and Innovation (ITI), University of Southern Denmark, Niels Bohrs Allé 1, 5230, Odense M, Denmark

    C. Garcia, Z. Han, I. P. Radko & S. I. Bozhevolnyi

  3. Centro de Investigación Científica y Educación Superior de Ensenada, PIIT, Apodaca, Nuevo León, 66600, Mexico

    V. Coello

  4. Center for THz Research, China Jiliang University, Hangzhou, 310018, China

    Z. Han

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  1. C. Garcia
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  2. V. Coello
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  3. Z. Han
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  4. I. P. Radko
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  5. S. I. Bozhevolnyi
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Correspondence to C. Garcia.

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Garcia, C., Coello, V., Han, Z. et al. Experimental characterization of dielectric-loaded plasmonic waveguide-racetrack resonators at near-infrared wavelengths. Appl. Phys. B 107, 401–407 (2012). https://doi.org/10.1007/s00340-012-4974-0

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  • DOI: https://doi.org/10.1007/s00340-012-4974-0

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