60%) can be achieved using an ultrashort (few microns) non adiabatic tapered gap plasmon waveguide. Same mechanism may be used to harvest impinging light waves and direct them into a nano hole or slit,
Abstract. We found that metal-dielectric-metal plasmon waveguides with a stub structure, i.e. a branch of the waveguide with a finite length, can function as wavelength selective filters of a submicron size. It was found that the transmission characteristics of such structures depend on the phase relationship between the
In this example, we analyze a gap surface plasmon waveguide, and determine the propagation loss of that structure at a wavelength of 1550 nm for different waveguide widths using the FDE solver in MODE Solutions. We also investigate end-fire coupling efficiency with high NA beams
Here, we demonstrate that efficient nano-optical couplers can be developed using closely spaced gap plasmon waveguides in the form of two parallel nano-sized rectangular slots in a thin metal film or
Adiabatic and nonadiabatic nanofocusing of plasmons in tapered gap plasmon waveguides is analyzed using the finite-difference time-domain algorithm. Optimal adaptors between two different subwavelength waveguides and conditions for maximal local field enhancement are determined, investigated, and explained on
Opt Express. 2008 Oct 13;16(21):16314-25. Characteristics of gap plasmon waveguide with stub structures. Matsuzaki Y(1), Okamoto T, Haraguchi M, Fukui M, Nakagaki M. Author information: (1)Department of Optical Science and Technology, Faculty of Engineering, The University of Tokushima, Minamijosanjima 2-1,
15 Jan 2016 We present an experimental demonstration of a new class of hybrid gap plasmon waveguides on the silicon-on-insulator (SOI) platform. Created by the hybridization of the plasmonic mode of a gap in a thin metal sheet and the transverse-electric (TE) photonic mode of an SOI slab, this waveguide is
The experimental observation is conducted by the end-fire excitation of the proposed gap plasmon waveguides and detection of the generated modes using their edge scattering and charge coupled device camera imaging. Physical interpretation of the obtained results is presented and origins of the described modes are
11 Jul 2016 Gap plasmon excitation in plasmonic waveguide using Si waveguide. Koji Okuda, Shun Kamada, Toshihiro Okamoto, and Masanobu Haraguchi. Department of Optical Science and Technology, Faculty of Engineering, Tokushima University, Tokushima 770-8506, Japan. E-mail:
18 Nov 2012 Here, we demonstrate experimentally the achievement of highly efficient nanofocusing in an Au–SiO2–Au gap plasmon waveguide using a carefully engineered three-dimensional taper. The dimensions of the SiO2 layer, perpendicular to the direction of wave propagation, taper linearly below 100 nm.

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March 2018