Research to reality: bringing fibre optic sensors into applications

Culshaw, Brian

doi:10.1117/12.622272

Cited by 6 publications

(4 citation statements)

References 7 publications

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“…During the last decades, there has been a rising interest in the development of sensors based on optical fibers for many different applications, including chemical and gas sensing 1,2 . Numerous transduction techniques were studied [3][4][5] .…”

Section: Introductionmentioning

confidence: 99%

Volatile organic compounds detection with tilted fiber Bragg gratings coated by ZnO nanoparticles

et al. 2012

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This paper presents a sensor based on a Tilted Fiber Bragg Grating (TFBG) covered with a mesoporous coating consisting of ZnO nanoparticles for the detection of volatile organic compounds. TFBGs are Bragg gratings that are tilted by a small angle inducing a coupling between the forward-going fundamental core mode and the backward-going cladding modes. They present a transmission amplitude spectrum consisting of several tens of resonances, which present their own sensitivity to the surrounding refractive index. Specific sensors can be built by using TFBGs covered with a dedicated coating that changes its refractive index when in contact with target chemical species. This concept was illustrated with ethanol and a mesoporous ZnO coating whose refractive index changes due to the gas adsorption on the ZnO particles. The exposure to ethanol vapors of the covered TFBG yields important modifications of the transmission amplitude spectrum in the range 1510-1590 nm. All cladding mode resonances show a red shift while their peak-to-peak amplitude decreases with increasing ethanol concentration in air. The response, defined as the amplitude or the wavelength change of a resonance peak, is fast (1s), linear, reversible and without hysteresis (red shift of 60 pm/vol% ethanol and -3.3 dB/vol% at 1550 nm).

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Section: Introductionmentioning

confidence: 99%

Volatile organic compounds detection with tilted fiber Bragg gratings coated by ZnO nanoparticles

et al. 2012

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“…During the last decades, there has been a rising interest in the development of sensors based on optical fibers for many different applications, including chemical and gas sensing [1,2]. Numerous transduction techniques were studied and fiber Bragg gratings (FBGs) appeared to be very attractive candidates [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

7.5.3 pH sensor based on tilted fiber Bragg gratings covered by a sol-gel

Debliquy¹,

Renoit²,

Olivier³

et al. 2012

Proceedings IMCS 2012

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“…Besides, there were other types of competing sensors, such as mechanical ones, which had shown promising new developments, even though they were based on even more mature technologies [2]. Optical fiber sensors experienced a great development with the advances in telecommunication technology [3], and found application niches where the advantages that optical fiber offers make them an option to be taken into account with respect to other technologies [4]. Some of these advantages are electromagnetic immunity, remote sensing, multiplexation capacity, passive nature, on line monitoring, distributed sensing or low weight and size, just to mention a few.…”

Section: Introductionmentioning

confidence: 99%

Volatile Organic Compound Optical Fiber Sensors: A Review

Elosúa

Matı́as

Bariain

et al. 2006

Sensors

173

103

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Volatile organic compound (VOC) detection is a topic of growing interest with applications in diverse fields, ranging from environmental uses to the food or chemical industries. Optical fiber VOC sensors offering new and interesting properties which overcame some of the inconveniences found on traditional gas sensors appeared over two decades ago. Thanks to its minimum invasive nature and the advantages that optical fiber offers such as light weight, passive nature, low attenuation and the possibility of multiplexing, among others, these sensors are a real alternative to electronic ones in electrically noisy environments where electronic sensors cannot operate correctly. In the present work, a classification of these devices has been made according to the sensing mechanism and taking also into account the sensing materials or the different methods of fabrication. In addition, some solutions already implemented for the detection of VOCs using optical fiber sensors will be described with detail.

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Research to reality: bringing fibre optic sensors into applications

Cited by 6 publications

References 7 publications

Volatile organic compounds detection with tilted fiber Bragg gratings coated by ZnO nanoparticles

Volatile organic compounds detection with tilted fiber Bragg gratings coated by ZnO nanoparticles

7.5.3 pH sensor based on tilted fiber Bragg gratings covered by a sol-gel

Volatile Organic Compound Optical Fiber Sensors: A Review

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