Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
Journal Home About Issues in Progress Current Issue All Issues Feature Issues

Surface plasmon polariton propagation and combination in Y-shaped metallic channels

Hongtao Gao, Haofei Shi, Changtao Wang, Chunlei Du, Xiangang Luo, Qiling Deng, Yaoguang Lv, Xiangdi Lin, and Hanmin Yao

Open Access Open Access

Abstract

The propagation and combination of surface plasmon polaritons (SPPs) in Y-shaped metallic nanochannels are investigated numerically via finite difference time domain (FDTD). It is shown that the behavior of SPPs in nano-size channels resembles that of light guiding in conventional waveguides, and SPPs can also be combined effectively with appropriately designed structures. The loss associated with metal absorption and scattering with the multiple reflections between slit openings on the bend angle are analyzed numerically. The Fabry–Perot cavity effect displayed by SPPs traveling in channels with finite length is discussed as well.

©2005 Optical Society of America

Full Article  |  PDF Article
More Like This
Beam manipulating by metallic nano-slits with variant widths

Haofei Shi, Changtao Wang, Chunlei Du, Xiangang Luo, Xiaochun Dong, and Hongtao Gao
Opt. Express 13(18) 6815-6820 (2005)

Propagation of long-range surface plasmon polaritons in photonic crystals

Alexandra Boltasseva, Thomas Søndergaard, Thomas Nikolajsen, Kristjan Leosson, Sergey I. Bozhevolnyi, and Jørn M. Hvam
J. Opt. Soc. Am. B 22(9) 2027-2038 (2005)

Surface plasmon polariton propagation in nanoscale metal gap waveguides

Bing Wang and Guo Ping Wang
Opt. Lett. 29(17) 1992-1994 (2004)

View More...

Cited By

Optica participates in Crossref's Cited-By Linking service. Citing articles from Optica Publishing Group journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (6)
Fig. 1.
Fig. 1. Dependence of complex propagation constant of SPPs in metallic channels on the channel width at the wavelength of 650 nm. The solid and dashed curves represent real and imaginary parts, respectively. The dotted curve corresponds to the propagation constant for the electromagnetic wave in a vacuum.

Download Full Size | PDF

Fig. 2.
Fig. 2. The schematic of the Y-shaped metallic channel for SPP combination.

Download Full Size | PDF

Fig. 3.
Fig. 3. Schematic of the cascaded Y-shaped metallic channels structure for four SPPs combined into one.

Download Full Size | PDF

Fig. 4.
Fig. 4. FDTD simulation result of Poynting vector Sz of the combination structure shown in Fig. 3 for λ = 650 nm and w= 30 nm.

Download Full Size | PDF

Fig. 5.
Fig. 5. Output intensity of the Y combiner of 2 to 1 with a different bend angle. The two arms are 150 nm long and the total length of the combiner is set to 400 nm. Channel width and wavelength are the same as in Fig. 4.

Download Full Size | PDF

Fig. 6.
Fig. 6. Output intensity for the Y combiner of 2 to 1 with different length of the stem channel. The bend angle here is 60° and arms length is 150 nm. Channels width and wavelength are as stated in Fig. 4.

Download Full Size | PDF

Select as filters
Select Topics Cancel
Top
       
© Copyright 2024 | Optica Publishing Group. All rights reserved, including rights for text and data mining and training of artificial technologies or similar technologies.
Privacy | Terms of Use