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Publications (10 of 11) Show all publications
Pereira, J. M., Spegel-Lexne, D., Alarcón, A., Tarasenko, O., Claesson, Å., Hey Tow, K., . . . Xavier, G. B. (2024). All-fiber Optical Pulse Storage Using Poled Fiber Modulators. In: CLEO: Science and Innovations, CLEO: S and I 2024 in Proceedings CLEO 2024, Part of Conference on Lasers and Electro-Optics: . Paper presented at CLEO: Science and Innovations in CLEO 2024, CLEO: S and I 2024 - Part of Conference on Lasers and Electro-Optics. Charlotte. 5 May 2024 through 10 May 2024. Optical Society of America
Open this publication in new window or tab >>All-fiber Optical Pulse Storage Using Poled Fiber Modulators
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2024 (English)In: CLEO: Science and Innovations, CLEO: S and I 2024 in Proceedings CLEO 2024, Part of Conference on Lasers and Electro-Optics, Optical Society of America , 2024Conference paper, Published paper (Refereed)
Abstract [en]

An all-fiber setup to store and retrieve light pulses using electric control is presented. The experiment is based on a Sagnac interferometer with a phase modulator fabricated using a poled fiber with internal electrodes.

Place, publisher, year, edition, pages
Optical Society of America, 2024
Keywords
Fiber optics; Interferometers; Light modulation; Optical fiber fabrication; Optical fibers; Optical signal processing; Phase modulation; All fiber; Electric control; Fiber-optical; Internal electrodes; Light pulse; Phase modulator; Poled fibers; Sagnac interferometer; Light modulators
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:ri:diva-76048 (URN)10.1364/CLEO_SI.2024.SM1B.1 (DOI)2-s2.0-85205106683 (Scopus ID)
Conference
CLEO: Science and Innovations in CLEO 2024, CLEO: S and I 2024 - Part of Conference on Lasers and Electro-Optics. Charlotte. 5 May 2024 through 10 May 2024
Funder
Vinnova
Note

The authors acknowledge financial support of VINNOVA in the project All-Optical fiber devices for quantum technologies, the Wallenberg Center and Sebastian Etcheverry for earlier discussions in the subject.

Available from: 2024-10-30 Created: 2024-10-30 Last updated: 2024-11-04Bibliographically approved
Hey Tow, K., Alomari, S., Pereira, J., Neves, T. & Claesson, A. (2024). Graphene-material based nanocomposite-coated optical fibres: a multi-functional optical fibre for improved distributed sensing performance in harsh environment. Journal of Lightwave Technology
Open this publication in new window or tab >>Graphene-material based nanocomposite-coated optical fibres: a multi-functional optical fibre for improved distributed sensing performance in harsh environment
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2024 (English)In: Journal of Lightwave Technology, ISSN 0733-8724, E-ISSN 1558-2213Article in journal (Refereed) Epub ahead of print
Abstract [en]

The optical fibre coating is essential to ensure high performance and reliability of the optical fibre. Out of all polymer-coated fibres, polyimide coatings provide the highest temperature rating, typically rated for use in optical fibre sensing applications at 300˚C (in air), with short excursion to 350˚C. In this communication, we assess whether the inclusion of graphene-based nanoparticles, such as graphene and graphene oxide, in a polyimide coating can enhance the durability of optical fibres at high temperatures. Draw tower fabrication of optical fibres with nanocomposite polymer coating is described. Tensile strength tests, performed on aged nanocomposite-coated optical fibres, are used as an indication of their performance at harsh conditions. The results are validated and quantified by distributed temperature and humidity sensing tests performed using these fibres. The results show that this novel class of fibre is more robust to high-temperature ageing and moisture-induced strain than standard polyimide-coated fibres, when used for distributed sensing. The electrical conductivity of the nanocomposite coating is also used in a multi-sensing approach, together with distributed optical fibre sensing, to measure temperature in a reliable way using the same optical fibre. 

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers Inc., 2024
Keywords
Graphene; Humidity sensors; Nanocomposites; Optical communication; Optical fibers; Plastic coatings; Polyimides; Temperature sensors; Tensile strength; Coated optical fibers; Distributed sensing; Graphene oxides; Harsh environment; Highest temperature; Material-based; Multi-functional; Polyimide coating; Sensing performance; Specialty optical fibers; Temperature measurement
National Category
Materials Engineering
Identifiers
urn:nbn:se:ri:diva-73948 (URN)10.1109/JLT.2024.3405891 (DOI)2-s2.0-85194872848 (Scopus ID)
Note

This work was supported (2021-05094) by Sweden’s Strategic Innovation Programme for Graphene, SIO Grafen, funded by the national innovation agency Vinnova. 

Available from: 2024-06-28 Created: 2024-06-28 Last updated: 2024-07-01Bibliographically approved
Lindblom, M., Patzauer, M., Vogt, U., Wilbur, S., Safari Yazd, N., Hey Tow, K., . . . Ebenhag, S.-C. (2023). Flexible Liquid-Filled Scintillating Fibers for X-Ray Detection. In: 2023 IEEE SENSORS: . Paper presented at 2023 IEEE SENSORS.29 October 2023 - 01 November 2023. Vienna, Austria.. Institute of Electrical and Electronics Engineers (IEEE)
Open this publication in new window or tab >>Flexible Liquid-Filled Scintillating Fibers for X-Ray Detection
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2023 (English)In: 2023 IEEE SENSORS, Institute of Electrical and Electronics Engineers (IEEE), 2023Conference paper, Published paper (Refereed)
Abstract [en]

We present the design and fabrication of flexible, liquid-filled scintillating fibers for X-ray detection made from silica fibers and silica capillaries. The scintillating fibers were characterized using ultraviolet light exposure and we also performed an experiment demonstrating X-ray detection.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2023
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:ri:diva-68522 (URN)10.1109/SENSORS56945.2023.10325072 (DOI)
Conference
2023 IEEE SENSORS.29 October 2023 - 01 November 2023. Vienna, Austria.
Note

This project has received funding from the European Union's Horizon 2020 Research and Innovation Program under Grant Agreement No. 899634.

Available from: 2023-12-13 Created: 2023-12-13 Last updated: 2024-04-03Bibliographically approved
Hey Tow, K., Pereira, J., Lindblom, M., Fernández-Ruiz, M., Martins, H. F., Rossi, M., . . . van den Berg, H. (2023). Monitoring mining induced seismicity using optical fibre sensors during mine exploitation. In: Proc SPIE Int Soc Opt Eng: . Paper presented at 2023 European Workshop on Optical Fibre Sensors, EWOFS 2023. Mons. 23 May through 26 May, 2023.. SPIE, 643, Article ID 1264324.
Open this publication in new window or tab >>Monitoring mining induced seismicity using optical fibre sensors during mine exploitation
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2023 (English)In: Proc SPIE Int Soc Opt Eng, SPIE , 2023, Vol. 643, article id 1264324Conference paper, Published paper (Refereed)
Abstract [en]

Fibre-optic based sensing technologies are becoming popular in the field of geophysics since enable long range and high spatial resolution acoustic measurements. In this work, we present preliminary results obtained using quasi-distributed Fibre-Bragg grating sensing and Distributed Acoustic Sensing (DAS) to monitor seismic activities in an operational underground mine. 12 FBGs and 800 metres of fiber optic cable was installed in the tunnel lining an operational mine and recorded mine seismicity such as production blasts and a small seismic activity of magnitude 1.41 in September 2022. 

Place, publisher, year, edition, pages
SPIE, 2023
Keywords
Distributed acoustic sensing, Fibre-optic sensing, geophone, mine, seismicity, Fiber optic sensors, Fiber optics, Mining, Acoustic measurements, Acoustic sensing, Fiber-optic sensing, Fiber-optics, High spatial resolution, Mining-induced seismicity, Seismic activity, Sensing technology, Fiber Bragg gratings
National Category
Civil Engineering
Identifiers
urn:nbn:se:ri:diva-65710 (URN)10.1117/12.2678296 (DOI)2-s2.0-85163038565 (Scopus ID)9781510665002 (ISBN)
Conference
2023 European Workshop on Optical Fibre Sensors, EWOFS 2023. Mons. 23 May through 26 May, 2023.
Note

The authors would like to acknowledge LKAB and BeFo (Stiftelsen Bergteknisk Forsking, project id: 444) for their support. The work of M.R.F-R. and HFM was supported by MCIN/AEI/10.13039/501100011033 and European Union «NextGenerationEU»/PRTR under grants RYC2021-032167-I and RYC2021-035009-I.

Available from: 2023-08-11 Created: 2023-08-11 Last updated: 2023-10-31Bibliographically approved
Hey Tow, K., Alomari, S., Claesson, Å. & Neves, T. (2023). Nanocomposite-coated optical fibres for improved distributed sensing performance in harsh environment. In: Proceedings - 28th International Conference on Optical Fiber Sensors, OFS 2023: . Paper presented at 28th International Conference on Optical Fiber Sensors, OFS 2023. Optical Society of America
Open this publication in new window or tab >>Nanocomposite-coated optical fibres for improved distributed sensing performance in harsh environment
2023 (English)In: Proceedings - 28th International Conference on Optical Fiber Sensors, OFS 2023, Optical Society of America , 2023Conference paper, Published paper (Refereed)
Abstract [en]

Draw tower fabrication of a novel optical fibre with nanocomposite polymer coating is reported. Preliminary results show it is more robust to high-temperature ageing, and moisture-induced strain than standard polymer fibres when used for distributed sensing. 

Place, publisher, year, edition, pages
Optical Society of America, 2023
Keywords
Optical fibers; Plastic coatings; %moisture; Coated optical fibers; Distributed sensing; Harsh environment; High-temperature ageing; Induced strain; Nanocomposite polymers; Polymer Coating; Polymer fiber; Sensing performance; Nanocomposites
National Category
Materials Engineering
Identifiers
urn:nbn:se:ri:diva-73255 (URN)10.1364/OFS.2023.Th5.3 (DOI)2-s2.0-85192215788 (Scopus ID)
Conference
28th International Conference on Optical Fiber Sensors, OFS 2023
Note

This work was supported (2021-05094) by Sweden's Strategic Innovation Programme for Graphene, SIO Grafen, funded by the national innovation agency Vinnova.

Available from: 2024-05-23 Created: 2024-05-23 Last updated: 2024-07-01Bibliographically approved
Lindblom, M., Patzauer, M., Hey Tow, K., Claesson, Å., Fogelberg, O., Jonsäter, T. & Warne, M. (2023). Refractory Lining Health Monitoring Based on Raman Optical Time Domain Reflectometry. In: Proceedings of SPIE - The International Society for Optical Engineering: . Paper presented at 2023 European Workshop on Optical Fibre Sensors, EWOFS 2023 Mons23. May 2023 through 26 May 2023. SPIE, 12643, Article ID 1264327.
Open this publication in new window or tab >>Refractory Lining Health Monitoring Based on Raman Optical Time Domain Reflectometry
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2023 (English)In: Proceedings of SPIE - The International Society for Optical Engineering, SPIE , 2023, Vol. 12643, article id 1264327Conference paper, Published paper (Refereed)
Abstract [en]

A fiber optic health-monitoring system for refractory lining in steel-making processes is presented. Its applicability as an early-warning system for lining damage is demonstrated by the results obtained in a field trial, in which 240 m of fiber was embedded in the lining of an electric arc furnace. The system is based on Raman distributed sensing and polyimide coated fibers in metal tube. The results presented from temperature cycling and calibration at temperatures up to 600 °C show that adequate accuracy and stability for the application can be attained.

Place, publisher, year, edition, pages
SPIE, 2023
Keywords
fiber optics for harsh environments, high-temperature fiber-optic sensing, Raman distributed temperature sensing, refractory lining monitoring, Electric arcs, Electric furnaces, Fiber optic sensors, Linings, Refractory materials, Steel fibers, Steelmaking, Steelmaking furnaces, Temperature sensors, Distributed temperature sensing, Fiber optic for harsh environment, Fiber-optic sensing, Fiber-optics, Harsh environment, High-temperature fibers, Refractory lining, Fiber optics
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:ri:diva-65743 (URN)10.1117/12.2679296 (DOI)2-s2.0-85163042599 (Scopus ID)9781510665002 (ISBN)
Conference
2023 European Workshop on Optical Fibre Sensors, EWOFS 2023 Mons23. May 2023 through 26 May 2023
Note

The authors would like to acknowledge Vinnova, Sweden's innovation agency, and the Strategic innovation programme for process industrial IT and automation, for their financial support.

Available from: 2023-08-10 Created: 2023-08-10 Last updated: 2023-10-31Bibliographically approved
Neves, T., Scherino, L., Da Silva, J., Bernard, R., Bouet, M., Hey Tow, K., . . . Thevenaz, L. (2022). Distributed Fibre Optic Thermo-hygrometer for Monitoring the Concrete Curing. In: Optics InfoBase Conference Papers: . Paper presented at 27th International Conference on Optical Fiber Sensors, OFS 2022, 29 August 2022 through 2 September 2022. Optica Publishing Group (formerly OSA)
Open this publication in new window or tab >>Distributed Fibre Optic Thermo-hygrometer for Monitoring the Concrete Curing
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2022 (English)In: Optics InfoBase Conference Papers, Optica Publishing Group (formerly OSA) , 2022Conference paper, Published paper (Refereed)
Abstract [en]

The moisture content in concrete is a critical parameter for most of the degradation processes such as shrinkage and cracking. In this paper, we present the first kilometrerange thermo-hygrometer for monitoring the concrete curing. © 2022 The Author(s).

Place, publisher, year, edition, pages
Optica Publishing Group (formerly OSA), 2022
Keywords
Concretes, Curing, Moisture meters, Photosensitivity, Shrinkage, Concrete curing, Degradation process, Fiber-optics, Hygrometers
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-64007 (URN)10.1364/OFS.2022.W4.30 (DOI)2-s2.0-85146688960 (Scopus ID)9781557528209 (ISBN)
Conference
27th International Conference on Optical Fiber Sensors, OFS 2022, 29 August 2022 through 2 September 2022
Note

Funding details: İslam Tarih, Sanat ve Kültür Araştırma Merkezi, IRCICA, USR 3380; Funding details: Ministère de l'Education Nationale, de l'Enseignement Superieur et de la Recherche, MESR; Funding details: European Regional Development Fund, ERDF; Funding details: Conseil Régional Hauts-de-France; Funding text 1: Acknowledgements: The authors would like to thank M. Medeiros for the support in the reference setup and M. Morais for the support in the concrete pouring process. The authors would like to thank Karen Delplace and Andy Cassez for support in the realization of optical fibres and Rémi Habert and Stéphane Plus for the characterization of obtained fibres. The authors would like to acknowledge the French Ministry of Higher Education and Research, the Hauts de-France Regional Council and the European Regional Development Fund (ERDF) through the Contrat de Projets Etat-Region (CPER Photonics for Society, P4S) for financial support. This work has been partially supported by IRCICA, USR 3380, CNRS-Univ, F-59000 Lille, France (https://ircica.univ-lille.fr). The authors would like to thank Fiberlab at RISE Research Institutes of Sweden for supplying the polyimide-coated fibres used in this work.

Available from: 2023-02-22 Created: 2023-02-22 Last updated: 2023-10-31Bibliographically approved
Claesson, Å., Franciscangelis, C., Pereira, J., Weldehawariat, T. & Hey Tow, K. (2022). FBG Applications in 25um Diameter Fibers. In: Optics InfoBase Conference Papers: . Paper presented at Bragg Gratings, Photosensitivity and Poling in Glass Waveguides and Materials, BGPP 2022, 24 July 2022 through 28 July 2022. Optica Publishing Group (formerly OSA)
Open this publication in new window or tab >>FBG Applications in 25um Diameter Fibers
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2022 (English)In: Optics InfoBase Conference Papers, Optica Publishing Group (formerly OSA) , 2022Conference paper, Published paper (Refereed)
Abstract [en]

Ultrathin 25μm optical fibers with FBG sensors are manufactured and used as vibration sensors in glass-fiber reinforced composites. The use of ultrathin fibers is discussed, and their manufacture is described. © 2022 The Authors.

Place, publisher, year, edition, pages
Optica Publishing Group (formerly OSA), 2022
Keywords
Fiber reinforced plastics, FBG sensor, Glass-fibre reinforced composites, Ultra-thin, Vibration sensors, Fiber Bragg gratings
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:ri:diva-62616 (URN)2-s2.0-85144238430 (Scopus ID)9781557528209 (ISBN)
Conference
Bragg Gratings, Photosensitivity and Poling in Glass Waveguides and Materials, BGPP 2022, 24 July 2022 through 28 July 2022
Available from: 2023-01-24 Created: 2023-01-24 Last updated: 2023-10-31Bibliographically approved
Neves, T., Zhang, L., Yang, F., Hey Tow, K., Petagna, P. & Thévenaz, L. (2019). A kilometre-range distributed relative humidity sensor. In: Proceedings of SPIE - The International Society for Optical Engineering: . Paper presented at 7th European Workshop on Optical Fibre Sensors, EWOFS 2019, 1 October 2019 through 4 October 2019. SPIE
Open this publication in new window or tab >>A kilometre-range distributed relative humidity sensor
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2019 (English)In: Proceedings of SPIE - The International Society for Optical Engineering, SPIE , 2019Conference paper, Published paper (Refereed)
Abstract [en]

Fibre optics sensors have been identified as very good candidates for environmental monitoring inside the silicon detectors operated at CERN's Large Hadron Collider. In this study, we present the results from the first highly sensitive relative humidity distributed sensor with kilometres sensing range. The setup is a 70 cm spatial resolution phase-sensitive Optical Time Domain Reflectometry (OTDR) and is able to monitor fibre lengths up to 10 km. The coating effect is also evaluated, analysing different coating thicknesses, number of coating layers, different manufacturing and different materials. Relative humidity tests were performed at two different temperatures (25°C and 42°C). Polyimide coated fibres show in general a higher humidity sensitivity then a standard acrylate coated fibre, while acrylate fibres offer the fastest response and settling time. The system is able to resolve 0.1% RH and all tested fibres proved to be good candidates to be employed in a distributed relative humidity sensor. If the requirements are a fast time response and short settling time at room temperature, the standard acrylate coated fibres are the best candidates. However, if the requirements are high sensitivity and measurement stability at different temperatures, the polyimide-coated fibres offer advantages on several aspects.

Place, publisher, year, edition, pages
SPIE, 2019
Keywords
Acrylate, CERN, Coating, Continuous, Distributed, Fibre, Humidity, Phase-OTDR, Polyimide, Rayleigh, Sensing, Temperature, Atmospheric humidity, Fibers, Humidity sensors, Optical fibers, Polyimides, Silicon detectors, Thickness measurement, Coatings
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-40637 (URN)10.1117/12.2540007 (DOI)2-s2.0-85073353926 (Scopus ID)9781510631236 (ISBN)
Conference
7th European Workshop on Optical Fibre Sensors, EWOFS 2019, 1 October 2019 through 4 October 2019
Available from: 2019-11-13 Created: 2019-11-13 Last updated: 2023-10-31Bibliographically approved
Hey Tow, K., Forsberg, F. & Margulis, W. (2019). Carbon dioxide and carbon monoxide concentration monitoring for improved carbon capture and storage: From laboratory to a field test in a cement plant. In: Proceedings of SPIE - The International Society for Optical Engineering: . Paper presented at 7th European Workshop on Optical Fibre Sensors, EWOFS 2019, 1 October 2019 through 4 October 2019. SPIE
Open this publication in new window or tab >>Carbon dioxide and carbon monoxide concentration monitoring for improved carbon capture and storage: From laboratory to a field test in a cement plant
2019 (English)In: Proceedings of SPIE - The International Society for Optical Engineering, SPIE , 2019Conference paper, Published paper (Refereed)
Abstract [en]

The cement industry is facing pressure to find technological solutions in reducing greenhouse gas emissions owing to the large amount of process emissions originating from the calcination of limestone. In this communication, an all-fibre gas monitoring system based on anti-resonant hollow-core fibres is proposed. An on-field test was performed in the harsh environment of a cement factory and it demonstrated the feasibility of using this system for low-concentration carbon dioxide and carbon monoxide monitoring in exhaust fumes

Place, publisher, year, edition, pages
SPIE, 2019
Keywords
Carbon capture and storage, Carbon dioxide, Carbon monoxide, Gas sensor, Hollow-core fibre, Carbon capture, Cement industry, Cements, Chemical sensors, Gas detectors, Gas emissions, Greenhouse gases, Lime, Optical fibers, Carbon monoxide concentration, Exhaust fumes, Gas monitoring systems, Harsh environment, Hollow cores, Low concentrations, Process emissions, Technological solution
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-40623 (URN)10.1117/12.2539811 (DOI)2-s2.0-85073349674 (Scopus ID)9781510631236 (ISBN)
Conference
7th European Workshop on Optical Fibre Sensors, EWOFS 2019, 1 October 2019 through 4 October 2019
Available from: 2019-11-25 Created: 2019-11-25 Last updated: 2023-10-31Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-9591-3958

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