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Opt Lett

Title:		Volatile organic compound sensing using a surface-relief D-shaped fiber Bragg grating and a polydimethylsiloxane layer
Author(s):		Lowder TL; Gordon JD; Schultz SM; Selfridge RH;
Address:		"Department of Electrical and Computer Engineering, Brigham Young University, Provo, Utah 84602, USA.tll32@et.byu.edu"
Journal Title:		Opt Lett
Year:		2007
Volume:		32
Issue:		17
Page Number:		2523 - 2525
DOI:		10.1364/ol.32.002523
ISSN/ISBN:		0146-9592 (Print) 0146-9592 (Linking)
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"
Keywords:
Notes:		"PubMed-not-MEDLINELowder, Tyson L Gordon, John D Schultz, Stephen M Selfridge, Richard H eng 2007/09/04 Opt Lett. 2007 Sep 1; 32(17):2523-5. doi: 10.1364/ol.32.002523"