Guiding and nanofocusing of a two-dimensional (2D) optical beam in a negative-dielectric-gap waveguide is studied theoretically. An index-guiding method along the dielectric core embedded in the negative-dielectric-gap is proposed and the confinement properties of the 2D optical beam are studied by the effective-refractive-index method and FDTD simulations. We have shown that the lateral beam width of the 2D optical beam can be shrunk to zero beyond the diffraction limit. A tapered negative-dielectric-gap waveguide using adiabatic propagation achieves nano-focusing and can be applied to nano-optical couplers. This is a gateway from conventional dielectric waveguides to nano-optical integrated circuits.
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Junichi TAKAHARA, Fuminori KUSUNOKI, "Guiding and Nanofocusing of Two-Dimensional Optical Beam for Nanooptical Integrated Circuits" in IEICE TRANSACTIONS on Electronics,
vol. E90-C, no. 1, pp. 87-94, January 2007, doi: 10.1093/ietele/e90-c.1.87.
Abstract: Guiding and nanofocusing of a two-dimensional (2D) optical beam in a negative-dielectric-gap waveguide is studied theoretically. An index-guiding method along the dielectric core embedded in the negative-dielectric-gap is proposed and the confinement properties of the 2D optical beam are studied by the effective-refractive-index method and FDTD simulations. We have shown that the lateral beam width of the 2D optical beam can be shrunk to zero beyond the diffraction limit. A tapered negative-dielectric-gap waveguide using adiabatic propagation achieves nano-focusing and can be applied to nano-optical couplers. This is a gateway from conventional dielectric waveguides to nano-optical integrated circuits.
URL: https://global.ieice.org/en_transactions/electronics/10.1093/ietele/e90-c.1.87/_p
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@ARTICLE{e90-c_1_87,
author={Junichi TAKAHARA, Fuminori KUSUNOKI, },
journal={IEICE TRANSACTIONS on Electronics},
title={Guiding and Nanofocusing of Two-Dimensional Optical Beam for Nanooptical Integrated Circuits},
year={2007},
volume={E90-C},
number={1},
pages={87-94},
abstract={Guiding and nanofocusing of a two-dimensional (2D) optical beam in a negative-dielectric-gap waveguide is studied theoretically. An index-guiding method along the dielectric core embedded in the negative-dielectric-gap is proposed and the confinement properties of the 2D optical beam are studied by the effective-refractive-index method and FDTD simulations. We have shown that the lateral beam width of the 2D optical beam can be shrunk to zero beyond the diffraction limit. A tapered negative-dielectric-gap waveguide using adiabatic propagation achieves nano-focusing and can be applied to nano-optical couplers. This is a gateway from conventional dielectric waveguides to nano-optical integrated circuits.},
keywords={},
doi={10.1093/ietele/e90-c.1.87},
ISSN={1745-1353},
month={January},}
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TY - JOUR
TI - Guiding and Nanofocusing of Two-Dimensional Optical Beam for Nanooptical Integrated Circuits
T2 - IEICE TRANSACTIONS on Electronics
SP - 87
EP - 94
AU - Junichi TAKAHARA
AU - Fuminori KUSUNOKI
PY - 2007
DO - 10.1093/ietele/e90-c.1.87
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E90-C
IS - 1
JA - IEICE TRANSACTIONS on Electronics
Y1 - January 2007
AB - Guiding and nanofocusing of a two-dimensional (2D) optical beam in a negative-dielectric-gap waveguide is studied theoretically. An index-guiding method along the dielectric core embedded in the negative-dielectric-gap is proposed and the confinement properties of the 2D optical beam are studied by the effective-refractive-index method and FDTD simulations. We have shown that the lateral beam width of the 2D optical beam can be shrunk to zero beyond the diffraction limit. A tapered negative-dielectric-gap waveguide using adiabatic propagation achieves nano-focusing and can be applied to nano-optical couplers. This is a gateway from conventional dielectric waveguides to nano-optical integrated circuits.
ER -