Impact of Pulse Width on the Sensitivity and Range of a Raman-based Distributed Fiberoptic Temperature Sensor

Silva, Marianne S. P. e; Alves, Henrique Patriota; Nascimento, Jehan Fonsêca do; Martins-Filho, Joaquim F.

doi:10.1590/2179-10742018v17i41542

Cited by 9 publications

(3 citation statements)

References 15 publications

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“…They can measure temperatures of up to 300 degrees Celsius per meter [90]. Using conventional OTDRs, a range of approximately 15 kilometres can be obtained for the DTS [91]. The DTS resolves both its temporal and spatial temperatures at 0.1 degrees Celsius.…”

Section: Distributed Temperature Sensing (Dts)mentioning

confidence: 99%

Optical Fibre-Based Sensors for Oil and Gas Applications

Johny

Amos

Prabhu

2021

Sensors

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Oil and gas (O&G) explorations moving into deeper zones for enhanced oil and gas recovery are causing serious safety concerns across the world. The sensing of critical multiple parameters like high pressure, high temperature (HPHT), chemicals, etc., are required at longer distances in real-time. Traditional electrical sensors operate less effectively under these extreme environmental conditions and are susceptible to electromagnetic interference (EMI). Hence, there is a growing demand for improved sensors with enhanced measurement capabilities and also sensors that generates reliable data for enhanced oil and gas production. In addition to enhanced oil and gas recovery, the sensing technology should also be capable of monitoring the well bore integrity and safety. The sensing requirements of the O&G industry for improved sensing in deeper zones include increased transmission length, improved spatial coverage and integration of multiple sensors with multimodal sensing capability. This imposes problems like signal attenuation, crosstalks and cross sensitivities. Optical fibre-based sensors are expected to provide superior sensing capabilities compared to electrical sensors. This review paper covers a detailed review of different fibre-optic sensing technologies to identify a feasible sensing solution for the O&G industry.

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Section: Distributed Temperature Sensing (Dts)mentioning

confidence: 99%

Optical Fibre-Based Sensors for Oil and Gas Applications

Johny

Amos

Prabhu

2021

Sensors

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“…As such, it is suitable for use in highly controlled environments such as nuclear or chemical plants [7]. Currently, optical fiberbased sensors are used to monitor various physical and chemical properties such as humidity [8], microbends [9], [10], electric field [11], [12], temperature [13], [14], pressure [ 15], magnetic field [16], gas [17], [18], corrosion [19]- [21] among others.…”

Section: Corrosion Sensor Using Metallic Doublementioning

confidence: 99%

Corrosion Sensor Using Metallic Double Layer in Optical Fiber

Oliveira

Silva

Alves

et al. 2021

J. Microw. Optoelectron. Electromagn. Appl.

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In this paper, a new optical fiber corrosion sensor based on metallic bilayers is described. The detection region is located at a fiber end facet and we present simulations as well as experimental results in controlled lab conditions for Ti(10 nm)/Al(10 nm) and Ni(5 nm)/Al(5 nm) bilayers. We perform the characterization of the device by numerical simulations using the COMSOL Multiphysics software, and with an analytical model, which makes use of the Fresnel equations. According to the simulations, the change in the reflected optical signal over time is related to variations in the thickness of the metallic films by the corrosive process and, consequently, the corrosion rate in each metal of the bilayer can be obtained. Upon the simulation results, sensor devices were fabricated by depositing thin metallic films on the cleaved facet of the optical fiber using the sputtering method. We show that the use of a metallic bilayer as a transducer, instead of a monolayer, improves the sensor measuring interval (20 ± 1 nm) and provides information about the corrosion rate along the corrosion process.

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“…Low phase-noise lasers [1]- [4] have relevant applications in optical fiber communications [5], temperature and pressure sensing [6], medical ultrasound devices [7], [8], temperature monitoring [9,10], wide-band fiber optic systems [11], monitoring of power grids [12], fiber optic interferometric sensors [13], low-phase-noise photonic oscillator fiber sensors [1], and fiber acoustic sensors [14]- [17].…”

Section: Introductionmentioning

confidence: 99%