Multi-directional plasmonic surface-wave splitters with full bandwidth isolation

Journal Article · Mon Mar 14 04:00:00 EDT 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4944461· OSTI ID:22591432

Gao, Zhen; Gao, Fei ^[1]; Zhang, Baile ^[1]

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1. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 (Singapore)

We present a multidirectional plasmonic surface-wave splitter with full bandwidth isolation experimentally based on coupled defect surface modes in a surface-wave photonic crystal. In contrast to conventional plasmonic surface-wave frequency splitters with polaritonic dispersion relations that overlap at low frequencies, this multidirectional plasmonic surface-wave splitter based on coupled defect surface modes can split different frequency bands into different waveguide branches without bandwidth overlap. Transmission spectra and near-field imaging measurements have been implemented in the microwave frequencies to verify the performance of the multidirectional plasmonic surface-wave splitter. This surface wave structure can be used as a plasmonic wavelength-division multiplexer that may find potential applications in the surface-wave integrated circuits from microwave to terahertz frequencies.

• OSTI ID: 22591432
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 11 Vol. 108; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CRYSTALS
DISPERSION RELATIONS
INTEGRATED CIRCUITS
MICROWAVE RADIATION
MULTIPLEXERS
PERFORMANCE
SPECTRA
SURFACES
WAVE PROPAGATION
WAVEGUIDES
WAVELENGTHS