Polyaniline deposition on tilted fiber Bragg grating for pH sensing

A. Lopez Aldaba; Á. González-Vila; M. Debliquy; M. Lopez-Amo; C. Caucheteur; D. Lahem

doi:10.1117/12.2267524

23 April 2017 Polyaniline deposition on tilted fiber Bragg grating for pH sensing

A. Lopez Aldaba, Á. González-Vila, M. Debliquy, M. Lopez-Amo, C. Caucheteur, D. Lahem

Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103235F (2017) https://doi.org/10.1117/12.2267524
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

Abstract

In this paper, we present the results of a new pH sensor based on a polyaniline (PAni) coating on the surface of a tilted fiber Bragg grating. The pH-sensitive PAni was deposited by in situ chemical oxidative polymerization. The performance of the fabricated pH sensor was tested and the obtained pH values were compared with the results obtained using a pH meter device. It was found that the sensor exhibits response to pH changes in the range of 2-12, achieving a sensitivity of 46 pm/pH with a maximum error due to the hysteresis effect of ±1.14 pH. The main advantages of this PAni-TFBG pH sensor are biochemical compatibility, temperature independence, long-term stability and remote realtime multipoint sensing features. This type of sensor could be used for biochemical applications, pipeline corrosion monitoring or remote-multipoint measurements.

Citation Download Citation

A. Lopez Aldaba, Á. González-Vila, M. Debliquy, M. Lopez-Amo, C. Caucheteur, and D. Lahem "Polyaniline deposition on tilted fiber Bragg grating for pH sensing", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103235F (23 April 2017); https://doi.org/10.1117/12.2267524

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