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Nanoscale metamaterial optical waveguides with ultrahigh refractive indices |
JOSA B, Vol. 29, Issue 9, pp. 2559-2566 (2012)
http://dx.doi.org/10.1364/JOSAB.29.002559
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Abstract
We propose deep-subwavelength optical waveguides based on metal–dielectric multilayer indefinite metamaterials with ultrahigh effective refractive indices. Waveguide modes with different mode orders are systematically analyzed with numerical simulations based on both metal–dielectric multilayer structures and the effective medium approach. The dependences of waveguide mode indices, propagation lengths, and mode areas on different mode orders, free-space wavelengths, and sizes of waveguide cross sections are studied. Furthermore, waveguide modes are also illustrated with iso-frequency contours in the wave vector space in order to investigate the mechanism of waveguide mode cutoff for high-order modes. The deep-subwavelength optical waveguide with a size smaller than
© 2012 Optical Society of America
OCIS Codes
(230.7370) Optical devices : Waveguides
(160.3918) Materials : Metamaterials
(250.5403) Optoelectronics : Plasmonics
(310.6628) Thin films : Subwavelength structures, nanostructures
ToC Category:
Optical Devices
History
Original Manuscript: June 4, 2012
Revised Manuscript: July 16, 2012
Manuscript Accepted: August 1, 2012
Published: August 29, 2012
Citation
Yingran He, Sailing He, Jie Gao, and Xiaodong Yang, "Nanoscale metamaterial optical waveguides with ultrahigh refractive indices," J. Opt. Soc. Am. B 29, 2559-2566 (2012)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-29-9-2559
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