Nano-optical waveguide modes in gaps embedded in left-handed metamaterial
JOSA B, Vol. 24, Issue 10, pp. A62-A68 (2007)
http://dx.doi.org/10.1364/JOSAB.24.000A62
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Abstract
We explored backward waves propagating predominantly in a regular dielectric or even a vacuum. These modes emerge when a dielectric gap is made in a left-handed material, also known as a negative index material. As the gap becomes nanometric in size, the modal pattern conforms with surface waves distribution and can exhibit either (or both) right-handed or left-handed characteristics. Interestingly, the details of the modal field in the gap is reminiscent of the plasmon polariton solutions of either a gap in metals (forward propagating) or a metal slab in a dielectric bulk (backward propagating). Subsequently, we examined a specific metamaterial realization of the left-handed optical medium by use of elongated nanometallic inclusions to generate positive–negative waveguide anisotropy. We used this metamaterial embedded between dielectric layers as the cladding layer of a gap and verified that the important results predicted above, namely nanometric-size backward waves, are obtained for this specific implementation.
© 2007 Optical Society of America
OCIS Codes
(130.2790) Integrated optics : Guided waves
(160.1190) Materials : Anisotropic optical materials
(240.6690) Optics at surfaces : Surface waves
History
Original Manuscript: January 3, 2007
Manuscript Accepted: April 11, 2007
Published: August 8, 2007
Virtual Issues
Photonic Metamaterials (2007) JOSA A
Citation
Yinon Satuby, Noam Kaminsky, and Meir Orenstein, "Nano-optical waveguide modes in gaps embedded in left-handed metamaterial," J. Opt. Soc. Am. B 24, A62-A68 (2007)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-24-10-A62
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