✦ LIBER ✦

Ammonia gas fiber sensor based on poly-aniline sensing film coated on superstructure fiber Bragg gratings

✍ Scribed by Lung Ai; Jiang-Chiou Mau; Wen-Fung Liu; Ming-Yue Fu; Tzu-Chiang Chen

Publisher: John Wiley and Sons
Year: 2007
Tongue: English
Weight: 246 KB
Volume: 49
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.22948

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✦ Synopsis

Abstract

In this study, we experimentally demonstrated that the concentrations of ammonia (NH~3~) gas can be detected by a fiber sensor based on the poly‐aniline (PANI) sensing film coated on the surface of an etched superstructure fiber Bragg grating (SFBG). This sensing mechanism is based on the NH~3~ gas to interact with the PANI‐coating film to cause the film index change and then to result in the Bragg wavelength shift. The sensitivity of this sensor is around 0.073 pm/ppm, which requires to be improved in the future for achieving a simple, reliable, repeatable, and nondestructive chemical‐gas fiber sensor. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 3063–3066, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22948

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