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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 46, Iss. 13 — May. 1, 2007
  • pp: 2481–2485

Pulsed laser deposited ZnO film on side-polished fiber as a gas sensing element

Anna Og. Dikovska, Petar A. Atanasov, Toshko R. Stoyanchov, Andrey T. Andreev, Elka I. Karakoleva, and Blagovesta S. Zafirova  »View Author Affiliations

Applied Optics, Vol. 46, Issue 13, pp. 2481-2485 (2007)

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A simple sensor element consisting of a side-polished single-mode fiber and a planar metal oxide waveguide is described. The thin ZnO planar waveguide was produced on the polished fiber surface by pulsed laser deposition at optimized processing parameters. A measurement scheme for in situ control of the film thickness during the deposition process was developed and used. X-ray diffraction measurements and scanning electron microscopy were used to characterize the structure and the surface morphology of the planar waveguide, respectively. The numerical evaluation of the sensor sensitivity predicts the possibility to detect refractive index changes of less than 10 4 . Furthermore, preliminary gas sensor tests were performed by using a mixture of 1.5% butane diluted in N 2 and pure butane. A shift of the spectral position of the resonance points was observed from 3 to 5 s after gas exposure, which corresponds to refractive index changes of 3 × 10 5 and 1.2 × 10 3 for 1.5% butane and for pure butane, respectively.

© 2007 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(310.6860) Thin films : Thin films, optical properties

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: August 11, 2006
Revised Manuscript: December 16, 2006
Manuscript Accepted: December 19, 2006
Published: April 9, 2007

Virtual Issues
Vol. 2, Iss. 6 Virtual Journal for Biomedical Optics

Anna Og. Dikovska, Petar A. Atanasov, Toshko R. Stoyanchov, Andrey T. Andreev, Elka I. Karakoleva, and Blagovesta S. Zafirova, "Pulsed laser deposited ZnO film on side-polished fiber as a gas sensing element," Appl. Opt. 46, 2481-2485 (2007)

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