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Opt Express

Title:		Photonic crystal fiber interferometer for chemical vapor detection with high sensitivity
Author(s):		Villatoro J; Kreuzer MP; Jha R; Minkovich VP; Finazzi V; Badenes G; Pruneri V;
Address:		"ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, Barcelona, Spain. joel.villatoro@icfo.es"
Journal Title:		Opt Express
Year:		2009
Volume:		17
Issue:		3
Page Number:		1447 - 1453
DOI:		10.1364/oe.17.001447
ISSN/ISBN:		1094-4087 (Electronic) 1094-4087 (Linking)
Abstract:		"We report an in-reflection photonic crystal fiber (PCF) interferometer which exhibits high sensitivity to different volatile organic compounds (VOCs), without the need of any permeable material. The interferometer is compact, robust, and consists of a stub of PCF spliced to standard optical fiber. In the splice the voids of the PCF are fully collapsed, thus allowing the excitation and recombination of two core modes. The device reflection spectrum exhibits sinusoidal interference pattern which shifts differently when the voids of the PCF are infiltrated with VOC molecules. The volume of voids responsible for the shift is less than 600 picoliters whereas the detectable levels are in the nanomole range"
Keywords:
Notes:		"PubMed-not-MEDLINEVillatoro, Joel Kreuzer, Mark P Jha, Rajan Minkovich, Vladimir P Finazzi, Vittoria Badenes, Goncal Pruneri, Valerio eng Research Support, Non-U.S. Gov't 2009/02/04 Opt Express. 2009 Feb 2; 17(3):1447-53. doi: 10.1364/oe.17.001447"