Highly sensitive fiber Bragg grating based gas sensor integrating polyaniline nanofiber for remote monitoring

Mohammed, Husam Abduldaem; Esttaifan, Bashar Adel; Yaacob, Mohd Hanif

doi:10.1016/j.yofte.2022.102901

Cited by 9 publications

(3 citation statements)

References 36 publications

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“…Various types of NH 3 sensors have been reported during the last decades [ 5 , 6 , 7 ]. Among them, due to the merits of small size, resistance to electromagnetic interference, and high sensitivity [ 8 ], optical fiber sensors have been widely studied in the field of gas sensing [ 9 , 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Polyacrylic Acid/Polyaniline-Coated Multimode Interferometer for Ammonia Detection

et al. 2023

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A coaxial optical fiber interferometer (COFI) is proposed here for ammonia sensing, which comprises two light-carrying single-mode fibers (SMF) fused to a section of no-core fiber (NCF), thus forming an optical interferometer. The outer surface of the COFI is coated with a layer of polyacrylic acid (PAA)/polyaniline (PAni) film. The refractive index (RI) of the sensitive layer varies when PAA/PAni interacts with ammonia, which leads to the resonance wavelength shift. The surface morphology and structure of the PAA/PAni composites were characterized by using a scanning electron microscope (SEM) and Fourier-transform infrared (FTIR) spectroscopy. When the sensor was exposed to an ammonia atmosphere of different concentrations at room temperature, the sensing performance of the PAA/PAni composite film was superior to that of a sensitive film formed by single-component PAA or PAni. According to the experimental results, the composite film formed by 5 wt% PAA mixed with 2 wt% PAni shows better performance when used for ammonia sensing. A maximum sensitivity of 9.8 pm/ppm was obtained under the ammonia concentration of 50 ppm. In addition, the sensor shows good performance in response time (100 s) and recovery time (180 s) and has good stability and selectivity. The proposed optical fiber ammonia sensor is adapted to monitor leakage in its production, storage, transportation, and application.

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Section: Introductionmentioning

confidence: 99%

Polyacrylic Acid/Polyaniline-Coated Multimode Interferometer for Ammonia Detection

et al. 2023

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“…In addition to their high sensitivity, they are also largely immune to high-voltage electrical fields, favouring their deployment in conditions where traditional electronic sensors would fail 1 . From material strain monitoring to sonar, FBGs have already been demonstrated to be extremely versatile and cost-effective solutions [2][3][4] . Of recent interest is their growing use in chemical monitoring, where they offer a low-cost, compact, yet highly sensitive options in the development of new gas detectors [4][5][6] .…”

Section: Introductionmentioning

confidence: 99%

“…From material strain monitoring to sonar, FBGs have already been demonstrated to be extremely versatile and cost-effective solutions [2][3][4] . Of recent interest is their growing use in chemical monitoring, where they offer a low-cost, compact, yet highly sensitive options in the development of new gas detectors [4][5][6] .…”

Section: Introductionmentioning

confidence: 99%

Cross-Correlation Using a Complex Aperiodic FBG: A New Technique for Gas Detection

Rahme,

Tuthill,

Betters

et al. 2023

Preprint

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Optical cross-correlation is a technique that can achieve both high specificity and high sensitivity when deployed as the basis for a sensing technology. Offering significant gains in cost, size and complexity, it can also deliver significantly higher signal-to-noise ratios than traditional approaches such as absorption methodologies. In this paper, we present an optical cross-correlation technology constructed around a bespoke customised Fiber Bragg Grating (FBG). Exploiting the remarkable flexibility in design enabled by multiple aperiodic Bragg gratings, optical filters are devised that exactly mimic the absorption features of a target gas species (for this paper, acetylene C2H2) over some waveband of interest. This grating forms the heart of the sensor architecture described here that employs modulated optical cross-correlation for gas detection. An experimental demonstration of this approach is presented, and shown to be capable of differentiating between different concentrations of the C2H2 target gas.Furthermore these measurements are shown to be robust against interloper species, with minimal impact on the detection signal-to-noise arising from the introduction of contaminant gases. This represents is a significant step toward the use of customised FBGs as low-cost, compact, and highly customisable photonic devices for deployment in gas detection.

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Low-concentration ammonia gas sensing using polyaniline nanofiber thin film grown by rapid polymerization technique

Upadhye

Dive²,

Birajadar

et al. 2022

J Mater Sci: Mater Electron

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Highly sensitive fiber Bragg grating based gas sensor integrating polyaniline nanofiber for remote monitoring

Cited by 9 publications

References 36 publications

Polyacrylic Acid/Polyaniline-Coated Multimode Interferometer for Ammonia Detection

Polyacrylic Acid/Polyaniline-Coated Multimode Interferometer for Ammonia Detection

Cross-Correlation Using a Complex Aperiodic FBG: A New Technique for Gas Detection

Low-concentration ammonia gas sensing using polyaniline nanofiber thin film grown by rapid polymerization technique

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