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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 1 — Jan. 1, 2012
  • pp: 28–30

Optical fiber refractometers based on indium tin oxide coatings fabricated by sputtering

S. Lopez, I. del Villar, C. Ruiz Zamarreño, M. Hernaez, F. J. Arregui, and I. R. Matias  »View Author Affiliations


Optics Letters, Vol. 37, Issue 1, pp. 28-30 (2012)
http://dx.doi.org/10.1364/OL.37.000028


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Abstract

This Letter presents the fabrication of optical fiber refractometers based on indium tin oxide (ITO) coatings deposited by sputtering with response in the visible region. ITO thin films have been sputtered by means of a rotating mechanism that enables the fabrication of smooth and homogeneous coatings onto the optical fiber core. The ITO coating acts as a resonance supporting layer. This permits us to couple light from the waveguide to the ITO-coating/external medium region at specific wavelength ranges. The device is sensitive to external medium refractive index, which allows its utilization as a refractometer. The sensitivity is dependent on the coating thickness, ranging from 523.21 to 1221nm/refractive index unit in the explored sensors. The sensor development process is time effective compared to other techniques such as dip coating or layer-by-layer self-assembly, which is interesting in terms of mass production.

© 2012 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(240.0310) Optics at surfaces : Thin films
(260.5740) Physical optics : Resonance
(300.1030) Spectroscopy : Absorption
(230.2285) Optical devices : Fiber devices and optical amplifiers
(310.7005) Thin films : Transparent conductive coatings

ToC Category:
Optical Devices

History
Original Manuscript: September 29, 2011
Revised Manuscript: November 8, 2011
Manuscript Accepted: November 8, 2011
Published: December 22, 2011

Citation
S. Lopez, I. del Villar, C. Ruiz Zamarreño, M. Hernaez, F. J. Arregui, and I. R. Matias, "Optical fiber refractometers based on indium tin oxide coatings fabricated by sputtering," Opt. Lett. 37, 28-30 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-1-28


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