Directional coupling in long-range dielectric-loaded plasmonic waveguides

Volodymyr Zenin; Zhanghua Han; Valentyn S. Volkov; Kristjan Leosson; Ilya P. Radko; Sergey I. Bozhevolnyi

doi:10.1364/OE.21.008799

Directional coupling in long-range dielectric-loaded plasmonic waveguides

Volodymyr Zenin, Zhanghua Han, Valentyn S. Volkov, Kristjan Leosson, Ilya P. Radko, Sergey I. Bozhevolnyi

Department of Technology and Innovation

University of Iceland

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Directional couplers (DCs) based on long-range dielectric-loaded surface plasmon-polariton waveguides (LR-DLSPPWs) operating at telecom wavelengths are studied both numerically and experimentally. The investigated LR-DLSPPWs are formed by ~1.2-μm-high and 1-μm-wide polymer ridges fabricated atop of 15-nm-thick and 500-nm-wide gold stripes supported by a 288-nm-thick Ormoclear polymer deposited on a low-index (ns ≈1.34) layer of Cytop. DC structures consisting of sineshaped S-bends (having an offset of ~10 μm over a distance of ~20 μm) and ~100-μm-long parallel LR-DLSPPWs with a center-to-center separation of 2 μm are characterized using scanning near-field microscopy. The experimentally obtained values of the propagation length (~400 μm), S-bend loss (~4 dB) and coupling length (~100 μm) are found in good
agreement with the numerical simulations, indicating a significant potential of LR-DLSPPWs for the realization of various plasmonic components.

Original language	English
Journal	Optics Express
Volume	21
Issue number	7
Pages (from-to)	8799-8807
ISSN	1094-4087
DOIs	https://doi.org/10.1364/OE.21.008799
Publication status	Published - 2013

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10.1364/OE.21.008799

http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-21-7-8799

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@article{2b33bc9c86664427b760980187a74159,

title = "Directional coupling in long-range dielectric-loaded plasmonic waveguides",

abstract = "Directional couplers (DCs) based on long-range dielectric-loaded surface plasmon-polariton waveguides (LR-DLSPPWs) operating at telecom wavelengths are studied both numerically and experimentally. The investigated LR-DLSPPWs are formed by ~1.2-μm-high and 1-μm-wide polymer ridges fabricated atop of 15-nm-thick and 500-nm-wide gold stripes supported by a 288-nm-thick Ormoclear polymer deposited on a low-index (ns ≈1.34) layer of Cytop. DC structures consisting of sineshaped S-bends (having an offset of ~10 μm over a distance of ~20 μm) and ~100-μm-long parallel LR-DLSPPWs with a center-to-center separation of 2 μm are characterized using scanning near-field microscopy. The experimentally obtained values of the propagation length (~400 μm), S-bend loss (~4 dB) and coupling length (~100 μm) are found in goodagreement with the numerical simulations, indicating a significant potential of LR-DLSPPWs for the realization of various plasmonic components.",

author = "Volodymyr Zenin and Zhanghua Han and Volkov, {Valentyn S.} and Kristjan Leosson and Radko, {Ilya P.} and Bozhevolnyi, {Sergey I.}",

year = "2013",

doi = "10.1364/OE.21.008799",

language = "English",

volume = "21",

pages = "8799--8807",

journal = "Optics Express",

issn = "1094-4087",

publisher = "The Optical Society",

number = "7",

}

TY - JOUR

T1 - Directional coupling in long-range dielectric-loaded plasmonic waveguides

AU - Zenin, Volodymyr

AU - Han, Zhanghua

AU - Volkov, Valentyn S.

AU - Leosson, Kristjan

AU - Radko, Ilya P.

AU - Bozhevolnyi, Sergey I.

PY - 2013

Y1 - 2013

N2 - Directional couplers (DCs) based on long-range dielectric-loaded surface plasmon-polariton waveguides (LR-DLSPPWs) operating at telecom wavelengths are studied both numerically and experimentally. The investigated LR-DLSPPWs are formed by ~1.2-μm-high and 1-μm-wide polymer ridges fabricated atop of 15-nm-thick and 500-nm-wide gold stripes supported by a 288-nm-thick Ormoclear polymer deposited on a low-index (ns ≈1.34) layer of Cytop. DC structures consisting of sineshaped S-bends (having an offset of ~10 μm over a distance of ~20 μm) and ~100-μm-long parallel LR-DLSPPWs with a center-to-center separation of 2 μm are characterized using scanning near-field microscopy. The experimentally obtained values of the propagation length (~400 μm), S-bend loss (~4 dB) and coupling length (~100 μm) are found in goodagreement with the numerical simulations, indicating a significant potential of LR-DLSPPWs for the realization of various plasmonic components.

AB - Directional couplers (DCs) based on long-range dielectric-loaded surface plasmon-polariton waveguides (LR-DLSPPWs) operating at telecom wavelengths are studied both numerically and experimentally. The investigated LR-DLSPPWs are formed by ~1.2-μm-high and 1-μm-wide polymer ridges fabricated atop of 15-nm-thick and 500-nm-wide gold stripes supported by a 288-nm-thick Ormoclear polymer deposited on a low-index (ns ≈1.34) layer of Cytop. DC structures consisting of sineshaped S-bends (having an offset of ~10 μm over a distance of ~20 μm) and ~100-μm-long parallel LR-DLSPPWs with a center-to-center separation of 2 μm are characterized using scanning near-field microscopy. The experimentally obtained values of the propagation length (~400 μm), S-bend loss (~4 dB) and coupling length (~100 μm) are found in goodagreement with the numerical simulations, indicating a significant potential of LR-DLSPPWs for the realization of various plasmonic components.

U2 - 10.1364/OE.21.008799

DO - 10.1364/OE.21.008799

M3 - Journal article

VL - 21

SP - 8799

EP - 8807

JO - Optics Express

JF - Optics Express

SN - 1094-4087

IS - 7

ER -

Directional coupling in long-range dielectric-loaded plasmonic waveguides

Abstract

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