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Optics Letters

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  • Editor: Anthony J. Campilo
  • Vol. 32, Iss. 17 — Sep. 1, 2007
  • pp: 2523–2525

Volatile organic compound sensing using a surface-relief D-shaped fiber Bragg grating and a polydimethylsiloxane layer

Tyson L. Lowder, John D. Gordon, Stephen M. Schultz, and Richard H. Selfridge  »View Author Affiliations


Optics Letters, Vol. 32, Issue 17, pp. 2523-2525 (2007)
http://dx.doi.org/10.1364/OL.32.002523


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Abstract

The authors use a surface-relief fiber Bragg grating with a polydimethylsiloxane (PDMS) layer as a volatile organic compound chemical sensor. A PDMS layer is used because it is compatible with the optical properties of the grating and exhibits good chemical selectivity. As the analyte is absorbed the refractive index of the PDMS changes, causing the Bragg wavelength to shift, and this shift is correlated to chemical type and concentration. The direction and amount of the Bragg wavelength shift is dependent on the absorbed chemical. The authors demonstrate chemical differentiation between dichloromethane and acetone in gaseous states.

© 2007 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(160.5470) Materials : Polymers
(230.1480) Optical devices : Bragg reflectors

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: May 31, 2007
Manuscript Accepted: July 18, 2007
Published: August 17, 2007

Citation
Tyson L. Lowder, John D. Gordon, Stephen M. Schultz, and Richard H. Selfridge, "Volatile organic compound sensing using a surface-relief D-shaped fiber Bragg grating and a polydimethylsiloxane layer," Opt. Lett. 32, 2523-2525 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-17-2523


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References

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