A hybrid fiber-optic sensing system for down-hole pressure and distributed temperature measurements

Chen, Ke; Zhou, Xin; Yang, Biye; Peng, Wei; Yu, Qingxu

doi:10.1016/j.optlastec.2015.04.001

Cited by 25 publications

(5 citation statements)

References 21 publications

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“…In a first scenario, both the FBG and the FPI sensors are subjected to relatively large variations. This is a common framework in oil and gas and geothermal engineering, whereas the FBG/FPI operates for detection of high temperature (–20°C to >200°C) and high pressure (up to 100 bar) [ 26 , 56 ], as well as in structural engineering, whereas the FBG/FPI structure detects strain and forces [ 6 ].…”

Section: Interrogation Of Hybrid Fbg/fpi Sensorsmentioning

confidence: 99%

“…These include chirped gratings [ 14 , 15 ], that allow temperature and strain detection on a distributed length; tilted gratings [ 2 , 16 , 17 ], particularly suited for biochemical sensing; and long-period gratings (LPGs) [ 18 , 19 ], which are transmission gratings with a broadband response. A second class of sensors is represented by Fabry-Perot interferometry (FPI) [ 20 , 21 , 22 , 23 , 24 , 25 , 26 ]: FPI sensors are based on a short cavity within the optical fiber, which generates a broadband spectral variation with a periodic pattern. Extrinsic FPI sensors are one of the main architectures for pressure sensing in medical devices [ 22 , 23 , 24 ], as well as pressure and temperature sensing in pipelines [ 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

“…A second class of sensors is represented by Fabry-Perot interferometry (FPI) [ 20 , 21 , 22 , 23 , 24 , 25 , 26 ]: FPI sensors are based on a short cavity within the optical fiber, which generates a broadband spectral variation with a periodic pattern. Extrinsic FPI sensors are one of the main architectures for pressure sensing in medical devices [ 22 , 23 , 24 ], as well as pressure and temperature sensing in pipelines [ 25 , 26 ]. A third class of wavelength-encoded sensors features architectures for biochemical sensors: most notably, fiber-optic sensors based on surface plasmon resonance (SPR) [ 27 ], single-multi-single mode (SMS) structures, tapered fibers [ 28 ] produce spectral absorption peaks at a specific wavelength.…”

Section: Introductionmentioning

confidence: 99%

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Advanced Interrogation of Fiber-Optic Bragg Grating and Fabry-Perot Sensors with KLT Analysis

Tosi

2015

Sensors

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The Karhunen-Loeve Transform (KLT) is applied to accurate detection of optical fiber sensors in the spectral domain. By processing an optical spectrum, although coarsely sampled, through the KLT, and subsequently processing the obtained eigenvalues, it is possible to decode a plurality of optical sensor results. The KLT returns higher accuracy than other demodulation techniques, despite coarse sampling, and exhibits higher resilience to noise. Three case studies of KLT-based processing are presented, representing most of the current challenges in optical fiber sensing: (1) demodulation of individual sensors, such as Fiber Bragg Gratings (FBGs) and Fabry-Perot Interferometers (FPIs); (2) demodulation of dual (FBG/FPI) sensors; (3) application of reverse KLT to isolate different sensors operating on the same spectrum. A simulative outline is provided to demonstrate the KLT operation and estimate performance; a brief experimental section is also provided to validate accurate FBG and FPI decoding.

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Section: Interrogation Of Hybrid Fbg/fpi Sensorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Advanced Interrogation of Fiber-Optic Bragg Grating and Fabry-Perot Sensors with KLT Analysis

Tosi

2015

Sensors

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“…The EFPI can be regarded as a dual-beam interferometer. Therefore, when the intensity of incident light with a wavelength of λ is I 0 , the reflected light intensity (I r ) can be expressed as [22,23] ( )…”

Section: Principle Of the Efpi Based Cantilever Microphonementioning

confidence: 99%

Trace Ammonia Detection Based on Near-Infrared Fiber-Optic Cantilever-Enhanced Photoacoustic Spectroscopy

et al. 2019

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A trace ammonia (NH 3) detection system based on the near-infrared fiber-optic cantilever-enhanced photoacoustic spectroscopy (CEPAS) is proposed. A fiber-optic extrinsic Fabry-Perot interferometer (EFPI) based cantilever microphone has been designed to detect the photoacoustic pressure signal. The microphone has many advantages, such as small size and high sensitivity. A near-infrared tunable erbium-doped fiber laser (EDFL) amplified by an erbium-doped fiber amplifier (EDFA) is used as a photoacoustic excitation light source. To improve the sensitivity, the photoacoustic signal is enhanced by a photoacoustic cell with a resonant frequency of 1624 Hz. When the wavelength modulation spectroscopy (WMS) technique is applied, the weak photoacoustic signal is detected by the second-harmonic detection technique. Trace NH 3 measurement experiments demonstrate that the designed fiber-optic CEPAS system has a linear response to concentrations in the range of 0 ppm-20 ppm at the wavelength of 1522.448 nm. Moreover, the detection limit is estimated to be 3.2 ppb for a lock-in integration time of 30 s.

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“…Among them, all fiber-optic sensors stand out and, as a consequence, their development has been steadily progressing throughout the years thanks to the ease of use of these devices, their high durability, low fabrication cost, and chemical inertness [ 20 , 21 , 22 ]. Over the last decade, researchers gained new measurement techniques using fiber-optic sensors, such as: hybrid fiber-optic sensing, GOD-complex-based (glucose oxidase complex) sensors, multi-parameter sensors, deformable micro-mirror sensors or core-offset splicing [ 23 , 24 , 25 , 26 , 27 , 28 ]. The requirement for the long-term monitoring of temperature in severe, remote conditions caused fiber-optic sensors application in many fields, including industry, e.g., building applications, oil leakage railway infrastructure [ 29 , 30 , 31 , 32 , 33 ], but also they are used in biochemistry [ 34 ].…”

Section: Introductionmentioning

confidence: 99%

ZnO ALD-Coated Microsphere-Based Sensors for Temperature Measurements

Listewnik

Bechelany

Jasiński

et al. 2020

Sensors

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In this paper, the application of a microsphere-based fiber-optic sensor with a 200 nm zinc oxide (ZnO) coating, deposited by the Atomic Layer Deposition (ALD) method, for temperature measurements between 100 and 300 °C, is presented. The main advantage of integrating a fiber-optic microsphere with a sensing device is the possibility of monitoring the integrity of the sensor head in real-time, which allows for higher accuracy during measurements. The study has demonstrated that ZnO ALD-coated microsphere-based sensors can be successfully used for temperature measurements. The sensitivity of the tested device was found to be 103.5 nW/°C when the sensor was coupled with a light source of 1300 nm central wavelength. The measured coefficient R2 of the sensor head was over 0.99, indicating a good fit of the theoretical linear model to the measured experimental data.

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A hybrid fiber-optic sensing system for down-hole pressure and distributed temperature measurements

Cited by 25 publications

References 21 publications

Advanced Interrogation of Fiber-Optic Bragg Grating and Fabry-Perot Sensors with KLT Analysis

Advanced Interrogation of Fiber-Optic Bragg Grating and Fabry-Perot Sensors with KLT Analysis

Trace Ammonia Detection Based on Near-Infrared Fiber-Optic Cantilever-Enhanced Photoacoustic Spectroscopy

ZnO ALD-Coated Microsphere-Based Sensors for Temperature Measurements

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