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Proceedings Paper

Optical fiber sensor toward pyridine vapors detection
Author(s): Cesar Elosua; Candido Bariain; Ignacio R. Matias; Antonio Rodriguez; Enrique Colacio; Alfonso Salinas; Antonio Segura; Alberto Fernandez
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Paper Abstract

A novel vapochromic complex has been used to develop an optical fiber device sensitive to pyridine vapors. In solid state, this material is blue, and in the presence of pyridine vapors, its color changes to pink-white. The vapochromic material is solved in tetrahydrofuran (THF) and immobilized in a plasticized polymeric, fixing it onto a cleaved ended optical fiber pigtail by dip coating. The fabrication process was optimized in terms of number of dips and dipping speed, evaluating the final devices by dynamic range. Employing a reflection set up, the response of the sensors was registered in terms of absorbance spectrum and changes in reflected optical power. Devices showing a linear response with different vapors concentrations were obtained, with a detection limit of 1 PPM (v/v).

Paper Details

Date Published: 16 May 2008
PDF: 4 pages
Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70042Y (16 May 2008); doi: 10.1117/12.786036
Show Author Affiliations
Cesar Elosua, Univ. Pública de Navarra (Spain)
Candido Bariain, Univ. Pública de Navarra (Spain)
Ignacio R. Matias, Univ. Pública de Navarra (Spain)
Antonio Rodriguez, Univ. de Granada (Spain)
Enrique Colacio, Univ. de Granada (Spain)
Alfonso Salinas, Univ. de Granada (Spain)
Antonio Segura, Univ. de Granada (Spain)
Alberto Fernandez, Univ. de Granada (Spain)


Published in SPIE Proceedings Vol. 7004:
19th International Conference on Optical Fibre Sensors

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