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Optical fiber sensor based on oblique angle deposition |
Applied Optics, Vol. 50, Issue 2, pp. 155-162 (2011)
http://dx.doi.org/10.1364/AO.50.000155
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Abstract
The technique of oblique angle deposition has been extended to the fabrication of nanostructured metal coatings on the tips of standard silica optical fibers by thermal evaporation. The coatings are initiated as metal island films, which grow into extended rodlike structures as the deposition continues. The nanorod coatings demonstrate excellent surface-enhanced Raman scattering performance with variability of less than 10% as shown by direct measurements off the fiber tip with thiophenol as a test analyte. However, in the remote sensing configuration, the nanorod structures perform no better than thin metal island films. This appears to be mainly due to reduced transmission when nanorod lengths exceed
© 2011 Optical Society of America
OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(240.6680) Optics at surfaces : Surface plasmons
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(300.6450) Spectroscopy : Spectroscopy, Raman
(220.4241) Optical design and fabrication : Nanostructure fabrication
(280.4788) Remote sensing and sensors : Optical sensing and sensors
ToC Category:
Remote Sensing and Sensors
History
Original Manuscript: September 7, 2010
Revised Manuscript: October 29, 2010
Manuscript Accepted: November 16, 2010
Published: January 6, 2011
Citation
Sasani Jayawardhana, Gorgi Kostovski, Alex P. Mazzolini, and Paul R. Stoddart, "Optical fiber sensor based on oblique angle deposition," Appl. Opt. 50, 155-162 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-2-155
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