Distributed fiber-optic sensors

Hartog, Arthur H.

doi:10.1007/978-94-011-1210-9_11

Cited by 13 publications

(6 citation statements)

References 33 publications

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“…Distributed fibre sensors 1 2 exploit specific optical effects activated along optical fibres, to obtain a spatially distributed profile of environmental quantities such as temperature, strain, pressure, electromagnetic fields and so on. This feature offers unique attributes and capabilities compared with conventional discrete sensing methods 1 2 . Conventional distributed fibre sensors can be classified in a wide range of types 2 based on the nature of the exploited optical effect.…”

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confidence: 99%

“…This feature offers unique attributes and capabilities compared with conventional discrete sensing methods 1 2 . Conventional distributed fibre sensors can be classified in a wide range of types 2 based on the nature of the exploited optical effect. There exist types based on optical absorption, fluorescence, evanescent field or interferometers, among others 1 2 ; however, most of the distributed sensors use natural scattering processes 3 4 present in optical fibres along with interrogating methods based on time-domain 5 or frequency-domain 6 reflectometry.…”

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confidence: 99%

“…Conventional distributed fibre sensors can be classified in a wide range of types 2 based on the nature of the exploited optical effect. There exist types based on optical absorption, fluorescence, evanescent field or interferometers, among others 1 2 ; however, most of the distributed sensors use natural scattering processes 3 4 present in optical fibres along with interrogating methods based on time-domain 5 or frequency-domain 6 reflectometry. These are sensors essentially based on Rayleigh scattering 7 8 9 10 11 , spontaneous Raman scattering 12 13 14 and spontaneous or stimulated Brillouin scattering 15 16 17 18 19 20 21 22 23 24 .…”

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confidence: 99%

“…Therefore, to ensure a given measurement quality (defined by the measurand resolution), a minimum SNR has to be secured in the system 24 25 . This imposes an important tradeoff between spatial resolution and sensing range, which affects all kinds of distributed fibre sensors 1 2 25 26 27 . Sensors with high (that is, sharp) spatial resolution are inherently limited by the short interaction time and low energy involved in the scattering process (locally activated at each fibre position), enabling measurements only along short ranges 19 20 (typically below 1 km).…”

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Intensifying the response of distributed optical fibre sensors using 2D and 3D image restoration

2016

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Distributed optical fibre sensors possess the unique capability of measuring the spatial and temporal map of environmental quantities that can be of great interest for several field applications. Although existing methods for performance enhancement have enabled important progresses in the field, they do not take full advantage of all information present in the measured data, still giving room for substantial improvement over the state-of-the-art. Here we propose and experimentally demonstrate an approach for performance enhancement that exploits the high level of similitude and redundancy contained on the multidimensional information measured by distributed fibre sensors. Exploiting conventional image and video processing, an unprecedented boost in signal-to-noise ratio and measurement contrast is experimentally demonstrated. The method can be applied to any white-noise-limited distributed fibre sensor and can remarkably provide a 100-fold improvement in the sensor performance with no hardware modification.

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Intensifying the response of distributed optical fibre sensors using 2D and 3D image restoration

2016

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“…3,4,5 In the early 1990s, developers began installing fibers for DTS into oil wells to map thermal profiles.…”

Section: Applications For Dts Systemsmentioning

confidence: 99%

Downhole fiber optic sensing: the oilfield service provider's perspective: from the cradle to the grave

Skinner

Maida

2014

SPIE Proceedings

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For almost three decades, interest has continued to increase with respect to the application of fiber-optic sensing techniques for the upstream oil and gas industry. This paper reviews optical sensing technologies that have been and are being adopted downhole, as well as their drivers. A brief description of the life of a well, from the cradle to the grave, and the roles fiber-optic sensing can play in optimizing production, safety, and protection of the environment are also presented. The performance expectations (accuracy, resolution, stability, and operational lifetime) that oil companies and oil service companies have for fiber-optic sensing systems is described. Additionally, the environmental conditions (high hydrostatic pressures, high temperatures, shock, vibration, crush, and chemical exposure) that these systems must tolerate to provide reliable and economically attractive oilfield monitoring solutions are described.

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‘Many hands make light work’ — a perspective on optical fiber from communications to measurement and sensing

Grattan¹

1998

Optical Fiber Sensor Technology

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Distributed fiber-optic sensors

Cited by 13 publications

References 33 publications

Intensifying the response of distributed optical fibre sensors using 2D and 3D image restoration

Intensifying the response of distributed optical fibre sensors using 2D and 3D image restoration

Downhole fiber optic sensing: the oilfield service provider's perspective: from the cradle to the grave

‘Many hands make light work’ — a perspective on optical fiber from communications to measurement and sensing

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