Abstract
Vertical plasmonic Mach-Zehnder Interferometers are investigated theoretically and experimentally, and their potential for ultrasensitive optical sensing is discussed. Plasmonic interferences arise from coherently coupled pairs of subwavelength slits, illuminated by a broadband optical source, and this interference modulates the intensity of the far-field scattering spectrum. Experimental results, obtained using a simple experimental setup, are presented to validate theoretically predicted interferences introduced by the surface plasmon modes on top and bottom surfaces of a metal film. By observing the wavelength shift of the peaks or valleys of the interference pattern, this highly compact device has the potential to achieve a very high sensitivity relative to other nanoplasmonic architectures reported. © 2009 Optical Society of America.
Original language | English (US) |
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Pages (from-to) | 20747-20755 |
Number of pages | 9 |
Journal | Optics Express |
Volume | 17 |
Issue number | 23 |
DOIs | |
State | Published - Jan 1 2009 |
Externally published | Yes |
Bibliographical note
Generated from Scopus record by KAUST IRTS on 2022-09-13ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics