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Published September 11, 2013 | Supplemental Material + Submitted + Published
Journal Article Open

Functional plasmonic nanocircuits with low insertion and propagation losses

Abstract

We experimentally demonstrate plasmonic nanocircuits operating as subdiffraction directional couplers optically excited with high efficiency from free-space using optical Yagi-Uda style antennas at λ_0 = 1550 nm. The optical Yagi-Uda style antennas are designed to feed channel plasmon waveguides with high efficiency (45% in coupling, 60% total emission), narrow angular directivity (<40°), and low insertion loss. SPP channel waveguides exhibit propagation lengths as large as 34 μm with adiabatically tuned confinement and are integrated with ultracompact (5 × 10 μm^2), highly dispersive directional couplers, which enable 30 dB discrimination over Δλ = 200 nm with only 0.3 dB device loss.

Additional Information

© 2013 American Chemical Society. ACS AuthorChoice. Published In Issue: September 11, 2013. Article ASAP: August 23, 2013. Just Accepted Manuscript: August 20, 2013. Received: July 13, 2013. Revised: August 14, 2013. The authors thank P. Banzer, T. Bauer, S. Dobmann, J. S. Fakonas, and H. W. Lee for inspiring discussions and help with a new optical setup. This work was supported by the Cluster of Excellence Engineering of Advanced Materials (EAM), Erlangen and the Multidisciplinary University Research Initiative Grant (Air Force Office of Scientific Research FA9550-10-1-0264). A.K. and D.P. also acknowledge funding from the Erlangen Graduate School in Advanced Optical Technologies (SAOT) by the German Research Foundation (DFG) in the framework of the German excellence initiative, A.K. by Friedrich Naumann Foundation, and S.P.B. by the National Science Foundation. We acknowledge use of facilities of the Kavli Nanoscience Institute (KNI) at Caltech and the Max Planck Institute for the Science of Light (MPL), Erlangen. Author Contributions: A.K. and S.P.B. conceived the experiments and developed the device design, A.K. performed numerical simulations and S.P.B. fabricated the samples. A.K., D.P., H.P., and S.P.B. performed the optical and FIB/SEM measurements. A.K., S.P.B., U.P., and H.A.A. analyzed the data and wrote the first draft of the manuscript. All authors contributed to the final version of the manuscript. The authors declare no competing financial interest.

Attached Files

Published - nl402580c.pdf

Submitted - 1308.3261.pdf

Supplemental Material - nl402580c_si_002.pdf

Supplemental Material - nl402580c_si_003.mov

Supplemental Material - nl402580c_si_004.pptx

Supplemental Material - nl402580c_si_005.avi

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Created:
August 22, 2023
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