Plasmonic directional couplers using channel waveguides in random arrays of metal nanoparticles

C. E. Garcia-Ortiz*, V. Coello, E. Pisano, Y. Chen, S. I. Bozhevolnyi

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Resumé

Plasmonic directional couplers based on channel waveguides embedded in random arrays of metal nanoparticles (NPs) operating in near-infrared are fabricated using electron-beam lithography and investigated experimentally characterizing their performance with leakage-radiation microscopy. The power exchange between coupled waveguides, its spatial period and efficiency, along with the overall power transmission, are determined in the wavelength range from 700 to 800 nm. We introduce a simple coupled-mode approach based on three coupled waveguides. The composite system considers a waveguide consisting of NP-filled stripe with characteristics distinctly different from those of the channel waveguides. Using this model, we describe the performance of investigated composite plasmonic configurations and obtain good qualitative agreement with experimental observations.

OriginalsprogEngelsk
TidsskriftOptics Express
Vol/bind27
Udgave nummer16
Sider (fra-til)22753-22763
ISSN1094-4087
DOI
StatusUdgivet - 2019

Fingeraftryk

directional couplers
waveguides
nanoparticles
metals
composite materials
power transmission
coupled modes
leakage
lithography
electron beams
microscopy
radiation
configurations
wavelengths

Citer dette

Garcia-Ortiz, C. E. ; Coello, V. ; Pisano, E. ; Chen, Y. ; Bozhevolnyi, S. I. / Plasmonic directional couplers using channel waveguides in random arrays of metal nanoparticles. I: Optics Express. 2019 ; Bind 27, Nr. 16. s. 22753-22763.
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Plasmonic directional couplers using channel waveguides in random arrays of metal nanoparticles. / Garcia-Ortiz, C. E.; Coello, V.; Pisano, E.; Chen, Y.; Bozhevolnyi, S. I.

I: Optics Express, Bind 27, Nr. 16, 2019, s. 22753-22763.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Plasmonic directional couplers using channel waveguides in random arrays of metal nanoparticles

AU - Garcia-Ortiz, C. E.

AU - Coello, V.

AU - Pisano, E.

AU - Chen, Y.

AU - Bozhevolnyi, S. I.

PY - 2019

Y1 - 2019

N2 - Plasmonic directional couplers based on channel waveguides embedded in random arrays of metal nanoparticles (NPs) operating in near-infrared are fabricated using electron-beam lithography and investigated experimentally characterizing their performance with leakage-radiation microscopy. The power exchange between coupled waveguides, its spatial period and efficiency, along with the overall power transmission, are determined in the wavelength range from 700 to 800 nm. We introduce a simple coupled-mode approach based on three coupled waveguides. The composite system considers a waveguide consisting of NP-filled stripe with characteristics distinctly different from those of the channel waveguides. Using this model, we describe the performance of investigated composite plasmonic configurations and obtain good qualitative agreement with experimental observations.

AB - Plasmonic directional couplers based on channel waveguides embedded in random arrays of metal nanoparticles (NPs) operating in near-infrared are fabricated using electron-beam lithography and investigated experimentally characterizing their performance with leakage-radiation microscopy. The power exchange between coupled waveguides, its spatial period and efficiency, along with the overall power transmission, are determined in the wavelength range from 700 to 800 nm. We introduce a simple coupled-mode approach based on three coupled waveguides. The composite system considers a waveguide consisting of NP-filled stripe with characteristics distinctly different from those of the channel waveguides. Using this model, we describe the performance of investigated composite plasmonic configurations and obtain good qualitative agreement with experimental observations.

U2 - 10.1364/OE.27.022753

DO - 10.1364/OE.27.022753

M3 - Journal article

VL - 27

SP - 22753

EP - 22763

JO - Optics Express

JF - Optics Express

SN - 1094-4087

IS - 16

ER -