Relevant bibliographies by topics / Optical fibre gas sensor

Academic literature on the topic 'Optical fibre gas sensor'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Optical fibre gas sensor"

1

Farahi, F., P. Akhavan Leilabady, J. D. C. Jones, and D. A. Jackson. "Optical-fibre flammable gas sensor." Journal of Physics E: Scientific Instruments 20, no. 4 (April 1987): 435–36. http://dx.doi.org/10.1088/0022-3735/20/4/019.

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Austin, Ed, Adriaan van Brakel, Marco N. Petrovich, and David J. Richardson. "Fibre optical sensor for C2H2 gas using gas-filled photonic bandgap fibre reference cell." Sensors and Actuators B: Chemical 139, no. 1 (May 2009): 30–34. http://dx.doi.org/10.1016/j.snb.2008.07.028.

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Carvalho, J. P., H. Lehmann, H. Bartelt, F. Magalhães, R. Amezcua-Correa, J. L. Santos, J. Van Roosbroeck, F. M. Araújo, L. A. Ferreira, and J. C. Knight. "Remote System for Detection of Low-Levels of Methane Based on Photonic Crystal Fibres and Wavelength Modulation Spectroscopy." Journal of Sensors 2009 (2009): 1–10. http://dx.doi.org/10.1155/2009/398403.

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In this work we described an optical fibre sensing system for detecting low levels of methane. The properties of hollow-core photonic crystal fibres are explored to have a sensing head with favourable characteristics for gas sensing, particularly in what concerns intrinsic readout sensitivity and gas diffusion time in the sensing structure. The sensor interrogation was performed applying the Wavelength Modulation Spectroscopy technique, and a portable measurement unit was developed with performance suitable for remote detection of low levels of methane. This portable system has the capacity to simultaneously interrogate four remote photonic crystal fibre sensing heads.
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Chambers, P., W. B. Lyons, E. Lewis, T. Sun, and K. T. V. Grattan. "The potential for development of an NH3 optical fibre gas sensor." Journal of Physics: Conference Series 85 (October 1, 2007): 012015. http://dx.doi.org/10.1088/1742-6596/85/1/012015.

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Maciak, Erwin. "Palladium thin films for plasmonic hydrogen gas sensing." Photonics Letters of Poland 11, no. 2 (July 1, 2019): 56. http://dx.doi.org/10.4302/plp.v11i2.914.

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In this study, I prepared BK7 glass slides coated by palladium (Pd) layer by PVD technique. These samples have been employed as plasmon active structures in classic Kretschmann-based SPR set-up. The application of H2 sensing structures based on palladium plasmonic active thin films have been tested and investigated. Hydrogen sensing properties of Pd films were investigated at room temperature The reflectances of p-polarized light from Pd thin films as a function of angle of incidence and wavelength were measured in synthetic air (or nitrogen) and in gas mixtures including hydrogen. Variations of the reflectance in the presence of hydrogen gas at room temperature revealed that the samples can sense hydrogen in a wide range of concentration (0–2% vol/vol) without saturation behavior. The dynamic properties with various concentration of H2 at low temperature and dry gas mixtures was investigated and the effects of these factors on the hydrogen sensing properties were analyzed. Full Text: PDF ReferencesG. Korotcenkov, Handbook of Gas Sensor Materials: Properties, Advantages, and Shortcomings for Applications (Springer, New York 2013). CrossRef W. Jakubik, M. Urbanczyk, E. Maciak, "SAW hydrogen gas sensor based on WO3 and Pd nanostructures", Procedia Chemistry 1 (1), 200 (2009). CrossRef W. Jakubik, M. Urbanczyk, E. Maciak, T. Pustelny, "Bilayer Structures of NiOx and Pd in Surface Acoustic Wave and Electrical Gas Sensor Systems", Acta Physica Polonica A 116(3), 315 (2009). CrossRef E. Maciak, Z. Opilski, "Pd/V2O5 fiber optic hydrogen gas sensor", J. Phys. France IV 129, 137 (2005). CrossRef E. Maciak,. "Fiber optic sensor for H2 gas detection in the presence of methane based on Pd/WO3 low-coherence interferometric structure", Proc. SPIE 10455, UNSP 104550W (2017). CrossRef X. Bevenot, A. Truillet, C. Veillas, H. Gagnaire, M. Clement, "Hydrogen leak detection using an optical fibre sensor for aerospace applications", Sens. Actuators B 67, 57 (2000). CrossRef J. Homola, S.S. Yee, G. Gauglitz, "Surface plasmon resonance sensors: review", Sensors and Actuators B 54, 3 (1999). CrossRef H. Raether, Surface plasmons on smooth and rough surfaces and on gratings (Springer-Verlag, Berlin-Heidelberg 1988). CrossRef P. Tobiska, O. Hugon, A. Trouillet, H.Gagnarie, "An integrated optic hydrogen sensor based on SPR on palladium", Sensors and Actuators, B 74, 168 (2001). CrossRef Z. Opilski, E. Maciak, "Optical hydrogen sensor employing the phenomenon of the surface plasmons resonance in the palladium layer", Proc. SPIE 5576, 202 (2004). CrossRef T. Pustelny, E. Maciak, Z. Opilski, A. Piotrowska, E. Papis, K. Golaszewska, "Investigation of the ZnO sensing structure on NH3 action by means of the surface plasmon resonance method", European Physical Journal-Special Topics 154, 165 (2008). CrossRef E. Maciak, M. Procek, K. Kępska, A. Stolarczyk, "Study of optical and electrical properties of thin films of the conducting comb-like graft copolymer of polymethylsiloxane with poly(3-hexyltiophene) and poly(ethylene) glycol side chains for low temperature NO2 sensing", Thin Solid Films 618, 277 (2016). CrossRef
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Cheng, Tai Hong, Seong Hyun Lim, Chang Doo Kee, and Il Kwon Oh. "Development of Fiber-PZT Array Sensor System." Advanced Materials Research 79-82 (August 2009): 263–66. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.263.

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In this study, array type fiber-PZT senor systems were newly developed with capabilities of detecting both damage location and monitoring of gas or liquid leakage by applying time-frequency analyses. The system consists of two piezoelectric transducers for the signal receiver and generator applications and three optical fibers for wave propagation. The results showed developed fiber-PZT array sensor can accurately measure the position of crack and its intensity. Also the fluid leakage of methyl alcohol as test specimen, on the plate structure has also been investigated employing the fiber-PZT sensors. The ultrasonic wave optical fiber sensor can be used effectively to monitor changes in structural and chemical properties.
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Deng, Xian Ling, Chuan De Zhou, Liang Li, and Kang Cheng. "Research on Gas Chamber of Reflective Optical Fiber Hydrogen Sensor." Applied Mechanics and Materials 563 (May 2014): 145–48. http://dx.doi.org/10.4028/www.scientific.net/amm.563.145.

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Gas chamber is one of the most important problems of the optical fiber hydrogen sensor, which directly affects the quality of the sensor sensitivity. For reflective optical fiber hydrogen sensor, the gas chamber was researched in this paper. First, the gas chamber structure and optical loss for reflective optical fiber hydrogen sensor was analyzed. Then design requirements to the gas chamber were discussed, including isolation the gas flow of reference part and measurement part, distance of the probe and the reflector, the tilt angle of the reflector. By using the gas chamber in the reflective optical fiber hydrogen sensor, it illustrates better effect.
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Allsop, Thomas, and Ronald Neal. "A Review: Application and Implementation of Optic Fibre Sensors for Gas Detection." Sensors 21, no. 20 (October 12, 2021): 6755. http://dx.doi.org/10.3390/s21206755.

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At the present time, there are major concerns regarding global warming and the possible catastrophic influence of greenhouse gases on climate change has spurred the research community to investigate and develop new gas-sensing methods and devices for remote and continuous sensing. Furthermore, there are a myriad of workplaces, such as petrochemical and pharmacological industries, where reliable remote gas tests are needed so that operatives have a safe working environment. The authors have concentrated their efforts on optical fibre sensing of gases, as we became aware of their increasing range of applications. Optical fibre gas sensors are capable of remote sensing, working in various environments, and have the potential to outperform conventional metal oxide semiconductor (MOS) gas sensors. Researchers are studying a number of configurations and mechanisms to detect specific gases and ways to enhance their performances. Evidence is growing that optical fibre gas sensors are superior in a number of ways, and are likely to replace MOS gas sensors in some application areas. All sensors use a transducer to produce chemical selectivity by means of an overlay coating material that yields a binding reaction. A number of different structural designs have been, and are, under investigation. Examples include tilted Bragg gratings and long period gratings embedded in optical fibres, as well as surface plasmon resonance and intra-cavity absorption. The authors believe that a review of optical fibre gas sensing is now timely and appropriate, as it will assist current researchers and encourage research into new photonic methods and techniques.
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Alimagham, Farah, Max Platkov, Joshua Prestage, Svetlana Basov, Gregory Izakson, Abraham Katzir, Stephen R. Elliott, and Tanya Hutter. "Mid-IR evanescent-field fiber sensor with enhanced sensitivity for volatile organic compounds." RSC Advances 9, no. 37 (2019): 21186–91. http://dx.doi.org/10.1039/c9ra04104d.

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Cui, Lujun, Huichao Shang, Yan-long Cao, and Gao-feng Zhou. "Experimental research on a reflective optical fiber bundle hydrogen gas sensor." Sensor Review 37, no. 2 (March 20, 2017): 180–86. http://dx.doi.org/10.1108/sr-09-2016-0193.

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Purpose Long life and high hydrogen sensitivity are the crucial performance parameters for an optical fiber hydrogen sensing membrane, and these are the fundamental areas of study for an optical fiber hydrogen sensor. Considering that a traditional optical fiber hydrogen sensor based on pure palladium cannot meet the expectations for long life and rapid sensitivity simultaneously, the experiment in this paper designed a kind of reflective optical fiber bundle hydrogen gas sensor based on a Pd0.75–Ag0.25 alloy to achieve a hydrogen sensing system. This paper aims to discuss the issues with this system. Design/methodology/approach A reflective optical fiber bundle hydrogen sensor was made up of an optical fiber bundle and a Pd0.75–Ag0.25 alloy hydrogen membrane. A combination of optical fiber light intensity measurements and the reference calculation method were used to extract the hydrogen concentration information from within the optical fiber, and the relationship between the hydrogen concentration changes and the reflective light intensity in the optical fiber was established. Findings The reflective optical fiber bundle hydrogen gas sensor based on a Pd–Ag alloy membrane was shown to provide an effective way to detect hydrogen concentrations. The experimental results showed that a 20-30-nm-thick Pd0.75–Ag0.25 alloy membrane could reach high hydrogen absorption and sensitivity. Key preparation parameters which included sputtering time and substrate temperature were used to prepare the hydrogen membrane during the DC sputtering process, and the reflectivity of the Pd–Ag alloy membrane was enough to meet the requirements of long life and high hydrogen sensitivity for the optical fiber hydrogen sensor. Originality/value This paper seeks to establish a foundation for optimizing and testing the performance of the Pd–Ag alloy hydrogen sensing membrane for an optical fiber bundle hydrogen sensor. To this end, the optimal thickness and key preparation parameters for the Pd–Ag alloy hydrogen sensing membrane were discussed. The results of this research have proved that the reflective optical fiber hydrogen sensor based on a Pd0.75–Ag0.25 alloy is an effective approach and precisely enough for hydrogen gas monitoring in practical engineering measurements.
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Dissertations / Theses on the topic "Optical fibre gas sensor"

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Davies, Edward. "Optical fibre sensors with applications in gas and biological sensing." Thesis, Aston University, 2011. http://publications.aston.ac.uk/15800/.

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This thesis describes the study of various grating based optical fibre sensors for applications in refractive index sensing. The sensitivity of these sensors has been studied and in some cases enhanced using novel techniques. The major areas of development are as follows. The sensitivity of long period gratings (LPGs) to surrounding medium refractive index (SRI) for various periods was investigated. The most sensitive period of LPG was found to be around 160 µm and this was due to the core mode coupling to a single cladding mode but phase matching at two wavelength locations, creating two attenuation peaks, close to the waveguide dispersion turning point. Large angle tilted fibre gratings (TFGs) have similar behaviour to LPGs, in that they couple to the co-propagating cladding modes. The tilted structure of the index modulation within the core of the fibre gives rise to a polarisation dependency, differing the large angle TFG from a LPG. Since the large angle TFG couple to the cladding mode they are SRI sensitive, the sensitivity to SRI can be further increased through cladding etching using HF acid. The thinning of the cladding layer caused a reordering of the cladding modes and shifted to more SRI sensitive cladding modes as the investigation discovered. In a SRI range of 1.36 to 1.40 a sensitivity of 506.9 nm/URI was achieved for the etched large angle TFG, which is greater than the dual resonance LPG. UV inscribed LPGs were coated with sol-gel materials with high RIs. The high RI of the coating caused an increase in cladding mode effective index which in turn caused an increase in the LPG sensitivity to SRI. LPGs of various periods of LPG were coated with sol-gel TiO2 and the optimal thickness was found to vary for each period. By coating of the already highly SRI sensitive 160µm period LPG (which is a dual resonance) with a sol-gel TiO2, the SRI sensitivity was further increased with a peak value of 1458 nm/URI, which was an almost 3 fold increase compared to the uncoated LPG. LPGs were also inscribed using a femtosecond laser which produced a highly focused index change which was no uniform throughout the core of the optical fibre. The inscription technique gave rise to a large polarisation sensitivity and the ability to couple to multiple azimuthal cladding mode sets, not seen with uniform UV inscribed gratings. Through coupling of the core mode to multiple sets of cladding modes, attenuation peaks with opposite wavelength shifts for increasing SRI was observed. Through combining this opposite wavelength shifts, a SRI sensitivity was achieved greater than any single observed attenuations peak. The maximum SRI achieved was 1680 nm/URI for a femtosecond inscribed LPG of period 400 µm. Three different types of surface plasmon resonance (SPR) sensors with a multilayer metal top coating were investigated in D shape optical fibre. The sensors could be separated into two types, utilized a pre UV inscribed tilted Bragg grating and the other employed a post UV exposure to generate surface relief grating structure. This surface perturbation aided the out coupling of light from the core but also changed the sensing mechanism from SPR to localised surface plasmon resonance (LSPR). This greatly increased the SRI sensitivity, compared to the SPR sensors; with the gold coated top layer surface relief sensor producing the largest SRI sensitivity of 2111.5nm/URI was achieved. While, the platinum and silver coated top layer surface relief sensors also gave high SRI sensitivities but also the ability to produce resonances in air (not previously seen with the SPR sensors). These properties were employed in two applications. The silver and platinum surface relief devices were used as gas sensors and were shown to be capable of detecting the minute RI change of different gases. The calculated maximum sensitivities produced were 1882.1dB/URI and 1493.5nm/URI for silver and platinum, respectively. Using a DFB laser and power meter a cheap alternative approach was investigated which showed the ability of the sensors to distinguish between different gases and flow rates of those gases. The gold surface relief sensor was coated in a with a bio compound called an aptamer and it was able to detect various concentrations of a biological compound called Thrombin, ranging from 1mM to as low as 10fM. A solution of 2M NaCl was found to give the best stripping results for Thrombin from the aptamer and showed the reusability of the sensor. The association and disassociation constants were calculated to be 1.0638×106Ms-1 and 0.2482s-1, respectively, showing the high affinity of the Aptamer to thrombin. This supports existing working stating that aptamers could be alternative to enzymes for chemical detection and also helps to explain the low detection limit of the gold surface relief sensor.
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Overby, Alan Bland. "Dissolved Gas Analysis of Insulating Transformer Oil Using Optical Fiber." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/48598.

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The power industry relies on high voltage transformers as the backbone of power distribution networks. High voltage transformers are designed to handle immense electrical loads in hostile environments. Long term placement is desired, however by being under constant heavy load transformers face mechanical, thermal, and electrical stresses which lead to failures of the protection systems in place. The service life of a transformer is often limited by the life time of its insulation system. Insulation failures most often develop from thermal faults, or hotspots, and electrical faults, or partial discharges. Detecting hotspots and partial discharges to predict transformer life times is imperative and much research is focused towards these topics. As these protection systems fail they often generate gas or acoustic signals signifying a problem. Research has already been performed discovering new ways integrate optical fiber sensors into high voltage transformers. This thesis is a continuation of that research by attempting to improve sensor sensitivity for hydrogen and acetylene gasses. Of note is the fabrication of new hydrogen sensing fiber for operation around a larger absorption peak and also the improvement of the acetylene sensor's light source stability. Also detailed is the manufacturing of a field testable prototype and the non-sensitivity testing of several other gasses. The developed sensors are capable but still could be improved with the use of more powerful and stable light sources.
Master of Science
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Scott, Brian Lee. "Fabrication and Characterization of a Porous Clad Optical Fiber Gas Sensor." Thesis, Virginia Tech, 2008. http://hdl.handle.net/10919/30906.

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An optical fiber has been developed that can be used as a chemical gas sensor. Fabrication of the optical fiber produces a fiber that has a solid core with a porous cladding. The porous cladding region is made from a spinodally phase separable glass where the secondary phase is removed through dilute acid leaching. A non-phase separable glass composition is used for the core region. The properties of the phase separable glass are dependent on the processing conditions and the thermal history of the glass after the porosity has been achieved. Investigation of how processing conditions affected the pore structure was conducted to determine what pore characteristics are achievable for the glass composition used. Phase separation temperature, removal of silica gel deposited in the pores, and the post fabrication heat treating were used as experimental processing conditions. A maximum useable average pore size of approximately 29 nm was achieved. Maximum pore volume in the experimental groups was 0.4399 cc/g. Most heat treatments of the porous glass caused consolidation of the pore structure, with some conditions producing pore coarsening.
Master of Science
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Ibrahim, Sallehuddin. "Measurement of gas bubbles in a vertical water column using optical tomography." Thesis, Sheffield Hallam University, 2000. http://shura.shu.ac.uk/19852/.

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This thesis presents an investigation into the application of optical fibre sensors to a tomographic imaging system for use with gas/water mixtures. Several sensing techniques for measurement of two component flow using non-intrusive techniques are discussed and their relevance to tomographic applications considered. Optical systems are shown to be worthy of investigation. The interaction between a collimated beam of light and a spherical bubble is described. Modelling of different arrangements of projections of optical sensing arrays is carried out to predict the expected sensor output voltage profiles due to different flow regimes represented by four models. The four flow models investigated are: a single pixel flow, two pixels flow, half flow and full flow models. The response of the sensors is based on three models: optical path length, optical attenuation and a combination of optical attenuation model and signal conditioning. In the optical path length model, opaque solids or small bubbles, which are conveyed, may totally or partially interrupt the optical beams within the sensing volume. In the optical attenuation model, the Lambert-Beer's Law is applied to model optical attenuation due to the different optical densities of the fluids being conveyed. The combination of optical attenuation model and signal conditioning is designed to improve the visual contrast of the tomograms compared with those based on the optical attenuation model. Layergram back-projection (LYGBP) is used to reconstruct the image. A hybrid reconstruction algorithm combining knowledge of sensors reading zero flow with LYGBP is tested and shown to improve the image reconstruction. The combination of a two orthogonal and two rectilinear projections system based on optical fibres is used to obtain the concentration profiles and velocity of gas bubbles in a vertical column. The optical fibre lens is modelled to determine the relationships between fibre parameters and collimation of light into the receiver circuit. Modelling of the flow pipe is also carried out to investigate which method of mounting the fibres minimises refraction of the collimated light entering the pipe and the measurement cross-section. The preparation of the ends of the optical fibre and design of the electronics, which process the tomographic data, are described. Concentration profiles obtained from experiments on small bubbles and large bubbles flowing in a hydraulic conveyor are presented. Concentration profiles are generated using the hybrid reconstruction algorithm. The optical tomographic system is shown to be sensitive to small bubbles in water of diameter 1-10 mm and volumetric flow rates up to 1 1/min, and large bubbles in water of diameter 15-20 mm and volumetric flow rates up to 3 1/min. Velocity measurements are obtained directly from cross correlation of upstream and downstream sensors' signals as well as from upstream and downstream pixel concentration values. Suggestions for further work on optical tomographic measurements are made.
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Tipparaju, Venkata Satya Sai Sarma. "An active core fiber optic gas sensor using a photonic crystal hollow core fiber as a transducer." Master's thesis, Mississippi State : Mississippi State University, 2007. http://sun.library.msstate.edu/ETD-db/theses/available/etd-06262007-164352/.

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Shillig, Tyler. "Multi-point temperature sensing in gas turbines using fiber-based intrinsic Fabry-Perot interferometers." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/33612.

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Due to their compact size, sensitivity, and ability to be multiplexed, intrinsic Fabry-Perot interferometers (IFPIs) are excellent candidates for almost any multi-point temperature or strain application, and it is well-known that using a single-mode lead-in fiber, a multi-mode fiber section as the Fabry-Perot cavity, and an additional single-mode fiber as the tail results in a structure that generates strong interference fringes while remaining robust. Though the basic principles behind these sensors are understood, to the best of the authorâ s knowledge there hasnâ t been a thorough investigation into the design and fabrication of a chain of multiplexed IFPI sensors for industrial use in an environment where serious issues associated with the size of the test coupon, sensor placement, and mechanical reinforcement of the fiber could arise. This thesis details the preparation and results of this investigation. It turns out that fabricating a sensor chain with appropriate sensor spacing and excellent temperature response characteristics proved a significant challenge, and issues addressed include inter-sensor interference, high-temperature mechanical reinforcement for bare fiber sections, and high bending losses. After overcoming these problems, a final sensor chain was fabricated and characterized. This chain was then subjected to a battery of tests at the National Energy Technology Laboratory (NETL), where four multiplexed sensors were installed on a 2â x2â coupon in a simulated gas turbine environment. Final results are presented and analyzed. The work that went into developing this chain lays the foundation for future efforts in developing quasi-distributed temperature sensors by identifying potential obstacles and fundamental limitations for certain approaches.
Master of Science
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Allsop, Thomas David Paul. "A fibre optical strain sensor." Thesis, University of Plymouth, 1999. http://hdl.handle.net/10026.1/2779.

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Strain-sensing elements, fabricated in standard communications-grade single mode optical fibre, are increasingly being considered for application in structural health monitoring. The reason for this is the numerous advantages demonstrated by these devices compared with traditional indicators. This thesis describes work carried out on optical sensors at the University of Plymouth. The aim of this work was to achieve an optical fibre strain sensing system capable of measuring absolute strain with good resolution and having wide dynamic range, without bulky optical equipment and not susceptible to misalignment due to handling. Earlier work was devoted to study on an intrinsic Fabry-Perot interferometric sensor and an optical phase-shift detection technique. The sensing element investigated relied on the end face of an optical fibre as one mirror and the second mirror being a layer of Titanium Dioxide (TO2). Although some results are included, it was soon realised that this sensor had a number of problems, particularly with fabrication. As no simple solution presented itself, consideration was given to a sensor that made use of the change in reflectance of an intra-core fibre Bragg grating when the grating was subjected to strain. The bulk of work described in this thesis is concerned with this type of sensing element. The grating structure is inherently flexible and a number of structural formats were studied and investigated. The first and simplest grating considered was two linearly chirped Bragg gratings used in a Fabry-Perot configuration (a grating resonator). The sensor was tested using the sensing detection system and although the fabrication problems were overcome absolute strain measurement was unattainable. To achieve this end, a theoretical study of a number of grating structures was carried out using the T-matrix Formalism. Confidence in using this approach was gained by comparing the spectral behaviour of a proposed grating with results, which were given by another theoretical model for the same proposed grating. The outcome of this study was that two structures in particular showed promise with regard to absolutism (the measure of true strain) and linearity. Discussions held with the department of Applied Physics at Aston University about fabrication resulted in one of the proposed designs being abandoned due to difficulties of fabrication. The second structure showed more promise and fabrication attempts were put in hand. This grating is linearly-chirped with a Top-hat function and a sinusoidal perturbation as a taper function of the refractive index modulation. Experiments were performed, data were acquired and system performance for this sensor is presented. The thesis concludes that using such a fibre Bragg grating as the sensing element of a strain sensing system enables it to measure absolute strain without using bulky optical equipment. At present, the resolution of strain is limited by the quality of the grating being fabricated (anomalies on profile), this should improve once the fabrication technique is refined.
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Ludden, Brendan Patrick. "A distributed optical fibre sensor." Thesis, University of Cambridge, 1997. https://www.repository.cam.ac.uk/handle/1810/272327.

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Moss, Steven E. "Wavelength division multiplexed optical fibre sensor networks." Thesis, Manchester Metropolitan University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334635.

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MacLean, Alistair. "A distributed fibre optic water sensor." Thesis, University of Strathclyde, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248853.

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Books on the topic "Optical fibre gas sensor"

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1948-, Pal Bishnu P., ed. Fundamentals of fibre optics in telecommunication and sensor systems. New York: Wiley, 1992.

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Ahmad, A. Development of a portable optical fibre chemical sensor measuring instrument. Manchester: UMIST, 1994.

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Love, Adrian. Hollow Core Optical Fibre Based Gas Discharge Laser Systems. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-93970-4.

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Fouchal, Farid. Composite cure assessment using spectral analysis: (via an embedded optical fibre sensor). Leicester: De Montfort University, 2001.

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Morin, André. Feasibility of a modulating grid optical pressure sensor. [Montréal]: Transportation Development Centre, Transport Canada, 2002.

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Dubois, Stephane. Research towards the development of a structurally integrated optical fibre sensor system for impact detection in aircraft composite leading edge. Ottawa: National Library of Canada, 1990.

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L, Tuma Margaret, and United States. National Aeronautics and Space Administration., eds. Fabry-Perot fiber-optic temperature sensor system. [Washington, D.C: National Aeronautics and Space Administration, 1997.

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Radi, Haidar M. Frequency hopping spread spectrum multiplexing for interforometric optical fibre sensor networks. 1997.

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Love, Adrian. Hollow Core Optical Fibre Based Gas Discharge Laser Systems. Springer, 2018.

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Love, Adrian. Hollow Core Optical Fibre Based Gas Discharge Laser Systems. Springer, 2019.

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Book chapters on the topic "Optical fibre gas sensor"

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Spindler, Klaus, and Erich Hahne. "Fibre Optical Sensors for Measuring Local Quantities in Gas Liquid Two-Phase Flows." In Applied Optical Measurements, 217–32. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-642-58496-1_14.

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Culshaw, Brian. "Distributed and Multiplexed Fibre Optic Sensor Systems." In Optical Fiber Sensors, 165–84. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3611-9_8.

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Chakari, A., N. Mancier, L. F. Massoumu, and P. Meyrueis. "Polarimetric Sensor Using Multimode Optical Fibre." In Laser in der Technik / Laser in Engineering, 746–49. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-662-08251-5_161.

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Ioannides, N., D. Kalymnios, and I. W. Rogers. "Plastic Optical Fibre (POF) Displacement Sensor." In Trends in Optical Fibre Metrology and Standards, 827–28. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0035-9_45.

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Jackson, D. A. "Fiber Sensor Review." In Trends in Optical Fibre Metrology and Standards, 629–46. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0035-9_32.

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Götz, R., B. Mizaikoff, and R. Kellner. "Application of Sapphire Fibres to IR Fibre-optic Evanescent Field Gas Sensors." In Progress in Fourier Transform Spectroscopy, 833–35. Vienna: Springer Vienna, 1997. http://dx.doi.org/10.1007/978-3-7091-6840-0_222.

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Lenka, Archita, Bandita Panda, Chinmaya Kumar Sahu, Narayan Panda, and Sandip Kumar Dash. "Optical Sensor-Based Hydrogen Gas Detection." In Sensors for Stretchable Electronics in Nanotechnology, 105–41. New York: CRC Press, 2021. http://dx.doi.org/10.1201/9781003123781-8.

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Paulicka, I., V. Sochor, and J. Stulpa. "Fibre-Optic Fabry-Perot Sensor for Vibration and Profile Measurements." In Trends in Optical Fibre Metrology and Standards, 838. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0035-9_58.

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Dekhtyar, Yuri, Maksims Komars, and Maksims Sneiders. "Optical Metrology of Novel Optically Stimulated Semiconductor Gas Sensor." In IFMBE Proceedings, 462–68. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-31635-8_56.

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Yanbing, Liu, and Zhang Jinru. "An Optical Fibre Magnetic Field Sensor System for Measuring Low Frequency Fields." In Laser/Optoelektronik in der Technik / Laser/Optoelectronics in Engineering, 770–73. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-48372-1_163.

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Conference papers on the topic "Optical fibre gas sensor"

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Pichery, T., and N. Katcharov. "Optical Fibre Gas Detection." In Optical Fiber Sensors. Washington, D.C.: OSA, 1996. http://dx.doi.org/10.1364/ofs.1996.th313.

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Mohebati, Arman, and Terence A. King. "Differential Absorption Fibre-Optic Gas Sensor." In 1988 International Congress on Optical Science and Engineering, edited by Ralf T. Kersten. SPIE, 1989. http://dx.doi.org/10.1117/12.949312.

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Mishra, Satyendra K., Charul Varshney, and Banshi D. Gupta. "Fibre Optic Hydrogen Sulphide Gas Sensor Utilizing Cu/ZnO Nanoparticles." In Optical Sensors. Washington, D.C.: OSA, 2014. http://dx.doi.org/10.1364/sensors.2014.sew3c.7.

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Sheridan, Eoin, Mohammad Amanzadeh, Saiied M. Aminossadati, Mehmet S. Kizil, and Warwick P. Bowen. "Fibre Microfabrication and Characterization for Gas Sensing." In Optical Sensors. Washington, D.C.: OSA, 2012. http://dx.doi.org/10.1364/sensors.2012.stu2f.3.

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van Brakel, A., E. Austin, C. Grivas, M. N. Petrovich, and D. J. Richardson. "Photonic bandgap fiber optical correlation spectroscopy gas sensor." In 19th International Conference on Optical Fibre Sensors, edited by David D. Sampson. SPIE, 2008. http://dx.doi.org/10.1117/12.786114.

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Paliwal, Ayushi, Monika Tomar, and Vinay Gupta. "Surface Plasmon Resonance Based Optical NOx Gas Sensor." In International Conference on Fibre Optics and Photonics. Washington, D.C.: OSA, 2012. http://dx.doi.org/10.1364/photonics.2012.m3a.5.

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Wysokiński, Karol, Michał Szymański, Tomasz Stańczyk, Michał Murawski, Tadeusz Tenderenda, Marek Napierała, and Tomasz Nasiłowski. "Fiber optic gas sensor for on-line CO2monitoring." In International Conference on Optical Fibre Sensors (OFS24), edited by Hypolito J. Kalinowski, José Luís Fabris, and Wojtek J. Bock. SPIE, 2015. http://dx.doi.org/10.1117/12.2194807.

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Jin, Wei, George Stewart, and Brian Culshaw. "Monitoring of surface contamination in an evanescent-wave gas sensor using white light interferometry." In 10th Optical Fibre Sensors Conference. SPIE, 1994. http://dx.doi.org/10.1117/12.184959.

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Pawlat, Joanna, Takahiro Matsuo, Xuefeng Li, Tadashi Sugiyama, and Toshitsugu Ueda. "Gas sensor based on PBG fiber: possibilities and limitations." In 19th International Conference on Optical Fibre Sensors, edited by David D. Sampson. SPIE, 2008. http://dx.doi.org/10.1117/12.786133.

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Mulrooney, Jim, Colin Fitzpatrick, and Elfred Lewis. "Toward a mid-infrared optical fibre sensor for exhaust gas emissions." In Second European Workshop on Optical Fibre Sensors. SPIE, 2004. http://dx.doi.org/10.1117/12.566545.

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Reports on the topic "Optical fibre gas sensor"

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Shiquan Tao. Optical Fiber Chemical Sensor with Sol-Gel Derived Refractive Material as Transducer for High Temperature Gas Sensing in Clean Coal Technology. Office of Scientific and Technical Information (OSTI), December 2006. http://dx.doi.org/10.2172/901089.

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Junhang Dong, Hai Xiao, Xiling Tang, Hongmin Jiang, Kurtis Remmel, and Amardeep Kaur. DEVELOPMENT OF NOVEL CERAMIC NANOFILM-FIBER INTEGRATED OPTICAL SENSORS FOR RAPID DETECTION OF COAL DERIVED SYNTHESIS GAS. Office of Scientific and Technical Information (OSTI), September 2012. http://dx.doi.org/10.2172/1060495.

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Fielder, Robert, Matthew Palmer, Wing Ng, Matthew Davis, and Aditya Ringshia. High-Temperature, High-Bandwidth Fiber Optic Pressure and Temperature Sensors for Gas Turbine Applications. Fort Belvoir, VA: Defense Technical Information Center, December 2004. http://dx.doi.org/10.21236/ada429586.

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Quinn, Meghan. Geotechnical effects on fiber optic distributed acoustic sensing performance. Engineer Research and Development Center (U.S.), July 2021. http://dx.doi.org/10.21079/11681/41325.

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Abstract:
Distributed Acoustic Sensing (DAS) is a fiber optic sensing system that is used for vibration monitoring. At a minimum, DAS is composed of a fiber optic cable and an optic analyzer called an interrogator. The oil and gas industry has used DAS for over a decade to monitor infrastructure such as pipelines for leaks, and in recent years changes in DAS performance over time have been observed for DAS arrays that are buried in the ground. This dissertation investigates the effect that soil type, soil temperature, soil moisture, time in-situ, and vehicle loading have on DAS performance for fiber optic cables buried in soil. This was accomplished through a field testing program involving two newly installed DAS arrays. For the first installation, a new portion of DAS array was added to an existing DAS array installed a decade prior. The new portion of the DAS array was installed in four different soil types: native fill, sand, gravel, and an excavatable flowable fill. Soil moisture and temperature sensors were buried adjacent to the fiber optic cable to monitor seasonal environmental changes over time. Periodic impact testing was performed at set locations along the DAS array for over one year. A second, temporary DAS array was installed to test the effect of vehicle loading on DAS performance. Signal to Noise Ratio (SNR) of the DAS response was used for all the tests to evaluate the system performance. The results of the impact testing program indicated that the portions of the array in gravel performed more consistently over time. Changes in soil moisture or soil temperature did not appear to affect DAS performance. The results also indicated that time DAS performance does change somewhat over time. Performance variance increased in new portions of array in all material types through time. The SNR in portions of the DAS array in native silty sand material dropped slightly, while the SNR in portions of the array in sand fill and flowable fill material decreased significantly over time. This significant change in performance occurred while testing halted from March 2020 to August 2020 due to the Covid-19 pandemic. These significant changes in performance were observed in the new portion of test bed, while the performance of the prior installation remained consistent. It may be that, after some time in-situ, SNR in a DAS array will reach a steady state. Though it is unfortunate that testing was on pause while changes in DAS performance developed, the observed changes emphasize the potential of DAS to be used for infrastructure change-detection monitoring. In the temporary test bed, increasing vehicle loads were observed to increase DAS performance, although there was considerable variability in the measured SNR. The significant variation in DAS response is likely due to various industrial activities on-site and some disturbance to the array while on-boarding and off-boarding vehicles. The results of this experiment indicated that the presence of load on less than 10% of an array channel length may improve DAS performance. Overall, this dissertation provides guidance that can help inform the civil engineering community with respect to installation design recommendations related to DAS used for infrastructure monitoring.
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