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Multiple-Wavelength Focusing and Demultiplexing Plasmonic Lens Based on Asymmetric Nanoslit Arrays

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Abstract

A multiple-wavelength focusing and demultiplexing plasmonic lens based on asymmetric nanoslit arrays is designed. The nanoslit arrays are perforated in a gold film and act as metal–insulator–metal plasmonic waveguides. By manipulating the widths of the slit arrays, the plasmonic lens can concentrate two incident plane wave beams to two separated focal points corresponding to their wavelengths. The full wave simulation is performed to verify the designed lens. This work provides a way to design more compact and integrated wavelength-division multiplexing plasmonic devices for nanophotonic communication and spectral imaging.

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Acknowledgments

This work was supported by the 973 Program of China (no. 2013CBA01702), the National Natural Science Foundation of China (nos. 11204188, 61205097, 91233202, and 11174211), the National High Technology Research and Development Program of China (no. 2012AA101608-6), the Beijing Natural Science Foundation (no. KZ201110028035), and the Program for New Century Excellent Talents in University.

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Authors and Affiliations

  1. Department of Physics, Harbin Institute of Technology, Harbin, 150001, China

    Bo Wang & Yan Zhang

  2. Beijing Key Lab for Terahertz Spectroscopy and Imaging, Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Capital Normal University, Beijing, 100048, China

    Bo Wang, Xue Wu & Yan Zhang

  3. Department of Physics, Capital Normal University, Beijing, 100048, China

    Bo Wang, Xue Wu & Yan Zhang

Authors
  1. Bo Wang
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  2. Xue Wu
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  3. Yan Zhang
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Correspondence to Yan Zhang.

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Wang, B., Wu, X. & Zhang, Y. Multiple-Wavelength Focusing and Demultiplexing Plasmonic Lens Based on Asymmetric Nanoslit Arrays. Plasmonics 8, 1535–1541 (2013). https://doi.org/10.1007/s11468-013-9569-z

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  • DOI: https://doi.org/10.1007/s11468-013-9569-z

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