Abstract
Plasmonic waveguides can transport light while still confining it beyond the diffraction limit. Recently, crossing plasmonic waveguides have been suggested for the implementation of higher-density optical networks. However, suppressing undesirable scattering at their crossing point is still a challenging task because waveguides in these structures are physically connected. Here, we present an experimental demonstration of surface plasmon propagation on an overcrossing metallic waveguide fabricated by a pick-and-place method. By spatially separating the waveguides, the undesirable interaction at the interconnection can be suppressed. Our approach could be a powerful platform to achieve high-density integration of optical waveguides.
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Acknowledgments
This work was supported by Grant-in-Aid for Scientific Research B (no. 25286007) from the Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT). M. M. is supported by Research Fellowships of Japan Society for the Promotion of Science (JSPS) for Young Scientists. Y. N. is supported by Interactive Materials Science Cadet Program of Osaka University.
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Nagasaki, Y., Miyata, M., Higuchi, M. et al. Surface plasmon propagation on overcrossing metallic waveguides fabricated by a pick-and-place method. MRS Communications 5, 587–591 (2015). https://doi.org/10.1557/mrc.2015.80
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DOI: https://doi.org/10.1557/mrc.2015.80