Journal
ACS NANO
Volume 4, Issue 11, Pages 6433-6438Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn101334a
Keywords
surface plasmon polaritons; plasmonics; demultiplexers; strip waveguides; spectroscopy
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Funding
- National Natural Science Foundation of China [61036005, 11074015]
- Research Fund for the Doctoral Program of Higher Education [20090001110010]
- National Basic Research Program of China [2009CB623703, 2007CB307001]
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Two dimensional plasmonic demultiplexers for surface plasmon polaritons (SPPs), Which consist of concentric grooves on a gold film, are proposed and experimentally demonstrated to realize light-SPP coupling, effective dispersion, and multiple-channel SPP guiding A resolution as high as 10 nm is obtained The leakage radiation microscopy imaging shows that the SPPs of different wavelengths are focused and routed into different SPP strip waveguides The plasmonic demultiplexer can thus serve as a wavelength division multiplexing element for an integrated plasmonic circuit and also a plasmonic spectroscopy or filter
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