Journal
PLASMONICS
Volume 8, Issue 4, Pages 1535-1541Publisher
SPRINGER
DOI: 10.1007/s11468-013-9569-z
Keywords
Surface plasmons; Plasmonic lens; Wavelength multiplexing; Spectral imaging
Funding
- 973 Program of China [2013CBA01702]
- National Natural Science Foundation of China [11204188, 61205097, 91233202, 11174211]
- National High Technology Research and Development Program of China [2012AA101608-6]
- Beijing Natural Science Foundation [KZ201110028035]
- Program for New Century Excellent Talents in University
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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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