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Rainbow trapping of guided waves

Authors :
Tamara A. Leskova
Javier Polanco
Alexei A. Maradudin
Rosa M. Fitzgerald
Source :
Polanco, Javier; Fitzgerald, Rosa M; Leskova, Tamara A; & Maradudin, Alexei A. (2011). Rainbow trapping of guided waves. Low Temperature Physics, 37(11), 933. doi: 10.1063/1.3672159. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/3pq4s1g4
Publication Year :
2011
Publisher :
AIP Publishing, 2011.

Abstract

We study theoretically the propagation of a wave packet that is a superposition of three s-polarized guided waves with different frequencies in a planar waveguide consisting of a dielectric medium with a graded index of refraction, sandwiched between perfectly conducting walls. The electric field at each point within the waveguide is calculated, and it is shown that each of the constituent modes ceases to propagate at a specific distance along the waveguide that depends on its frequency and on the geometrical and material parameters defining the waveguide. This simple model displays the phenomenon of rainbow trapping of guided waves in an explicit fashion, without the use of a negative index metamaterial.

Details

ISSN :
10906517 and 1063777X
Volume :
37
Database :
OpenAIRE
Journal :
Low Temperature Physics
Accession number :
edsair.doi.dedup.....5a239344d148c76814b12daa21da4fd9
Full Text :
https://doi.org/10.1063/1.3672159