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Metal-clad waveguide sensor using a left-handed material as a core layer |
JOSA B, Vol. 29, Issue 5, pp. 959-964 (2012)
http://dx.doi.org/10.1364/JOSAB.29.000959
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Abstract
A four-layer waveguide structure comprising a dielectric substrate, a metal layer, a left-handed material (LHM) as a guiding layer, and a cladding is investigated as a metal-clad waveguide sensor. Fresnel reflection coefficients are used to study the resonance dips at which the reflectance minimizes. Our calculations show that the proposed structure has a preference over the surface-plasmon resonance structure since it gives a much sharper reflectance dip and can achieve considerable sensitivity improvement. The effects of the LHM permittivity, permeability, and thickness on the reflectance curves is studied.
© 2012 Optical Society of America
OCIS Codes
(120.5700) Instrumentation, measurement, and metrology : Reflection
(230.7400) Optical devices : Waveguides, slab
(280.1415) Remote sensing and sensors : Biological sensing and sensors
(350.3618) Other areas of optics : Left-handed materials
ToC Category:
Optical Devices
History
Original Manuscript: November 14, 2011
Revised Manuscript: January 10, 2012
Manuscript Accepted: January 12, 2012
Published: April 11, 2012
Virtual Issues
Vol. 7, Iss. 7 Virtual Journal for Biomedical Optics
Citation
Hani M. Kullab, Sofyan A. Taya, and Taher M. El-Agez, "Metal-clad waveguide sensor using a left-handed material as a core layer," J. Opt. Soc. Am. B 29, 959-964 (2012)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=josab-29-5-959
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