Direct Characterization of Plasmonic Slot Waveguides and Nanocouplers

Andrei Andryieuski; Vladimir A. Zenin; Radu Malureanu; Valentyn S. Volkov; Sergey I. Bozhevolnyi; Andrei Lavrinenko

doi:10.1021/nl501207u

Direct Characterization of Plasmonic Slot Waveguides and Nanocouplers

Andrei Andryieuski, Vladimir A. Zenin, Radu Malureanu, Valentyn S. Volkov, Sergey I. Bozhevolnyi, Andrei Lavrinenko

University of Southern Denmark

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Abstract

We demonstrate the use of amplitude- and phase-resolved near-field mapping for direct characterization of plasmonic slot waveguide mode propagation and excitation with nanocouplers in the telecom wavelength range. We measure mode’s propagation length, effective index and field distribution and directly evaluate the relative coupling efficiencies for various couplers configurations. We report 26- and 15-fold improvements in the coupling efficiency with two serially connected dipole and modified bow-tie antennas, respectively, as compared to that of the short-circuited waveguide termination.

Original language	English
Journal	Nano Letters
Volume	14
Issue number	7
Pages (from-to)	3925–3929
ISSN	1530-6984
DOIs	https://doi.org/10.1021/nl501207u
Publication status	Published - 2014

Keywords

Nanocoupler
Surface plasmon
Slot waveguide
Nanoantenna
s-SNOM
Near-field microscopy

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title = "Direct Characterization of Plasmonic Slot Waveguides and Nanocouplers",

abstract = "We demonstrate the use of amplitude- and phase-resolved near-field mapping for direct characterization of plasmonic slot waveguide mode propagation and excitation with nanocouplers in the telecom wavelength range. We measure mode{\textquoteright}s propagation length, effective index and field distribution and directly evaluate the relative coupling efficiencies for various couplers configurations. We report 26- and 15-fold improvements in the coupling efficiency with two serially connected dipole and modified bow-tie antennas, respectively, as compared to that of the short-circuited waveguide termination.",

keywords = "Nanocoupler, Surface plasmon, Slot waveguide, Nanoantenna, s-SNOM, Near-field microscopy",

author = "Andrei Andryieuski and Zenin, {Vladimir A.} and Radu Malureanu and Volkov, {Valentyn S.} and Bozhevolnyi, {Sergey I.} and Andrei Lavrinenko",

year = "2014",

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T1 - Direct Characterization of Plasmonic Slot Waveguides and Nanocouplers

AU - Andryieuski, Andrei

AU - Zenin, Vladimir A.

AU - Malureanu, Radu

AU - Volkov, Valentyn S.

AU - Bozhevolnyi, Sergey I.

AU - Lavrinenko, Andrei

PY - 2014

Y1 - 2014

N2 - We demonstrate the use of amplitude- and phase-resolved near-field mapping for direct characterization of plasmonic slot waveguide mode propagation and excitation with nanocouplers in the telecom wavelength range. We measure mode’s propagation length, effective index and field distribution and directly evaluate the relative coupling efficiencies for various couplers configurations. We report 26- and 15-fold improvements in the coupling efficiency with two serially connected dipole and modified bow-tie antennas, respectively, as compared to that of the short-circuited waveguide termination.

AB - We demonstrate the use of amplitude- and phase-resolved near-field mapping for direct characterization of plasmonic slot waveguide mode propagation and excitation with nanocouplers in the telecom wavelength range. We measure mode’s propagation length, effective index and field distribution and directly evaluate the relative coupling efficiencies for various couplers configurations. We report 26- and 15-fold improvements in the coupling efficiency with two serially connected dipole and modified bow-tie antennas, respectively, as compared to that of the short-circuited waveguide termination.

KW - Nanocoupler

KW - Surface plasmon

KW - Slot waveguide

KW - Nanoantenna

KW - s-SNOM

KW - Near-field microscopy

U2 - 10.1021/nl501207u

DO - 10.1021/nl501207u

M3 - Journal article

C2 - 24884442

SN - 1530-6984

VL - 14

SP - 3925

EP - 3929

JO - Nano Letters

JF - Nano Letters

IS - 7

ER -

Direct Characterization of Plasmonic Slot Waveguides and Nanocouplers

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