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Proceedings Paper

High-sensitivity photonic crystal fiber interferometer for chemical vapors detection
Author(s): Joel Villatoro; Mark P. Kreuzer; Rajan Jha; Vladimir P. Minkovich; Vittoria Finazzi; Gonçal Badenes; Valerio Pruneri
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Paper 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 very regular 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 around 500 picoliters whereas the detectable levels are in the nanomole range.

Paper Details

Date Published: 27 April 2009
PDF: 6 pages
Proc. SPIE 7316, Fiber Optic Sensors and Applications VI, 73161A (27 April 2009); doi: 10.1117/12.818265
Show Author Affiliations
Joel Villatoro, Institut de Ciències Fotòniques (Spain)
Mark P. Kreuzer, Institut de Ciències Fotòniques (Spain)
Rajan Jha, Institut de Ciències Fotòniques (Spain)
Vladimir P. Minkovich, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
Vittoria Finazzi, Institut de Ciències Fotòniques (Spain)
Gonçal Badenes, Institut de Ciències Fotòniques (Spain)
Valerio Pruneri, Institut de Ciències Fotòniques (Spain)
Institució Catalana de Recerca i Estudis Avançats (Spain)

Published in SPIE Proceedings Vol. 7316:
Fiber Optic Sensors and Applications VI
Eric Udd; Henry H. Du; Anbo Wang, Editor(s)

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