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Publications (10 of 47) Show all publications
Del Rosso, T., Margulis, W., Fontana, J. & Carvalho, I. C. .. (2019). 10 - Plasmonics for the Characterization of Metal Organic Films and Nanoparticles. In: Metal Nanostructures for Photonics: (pp. 223-259). Elsevier
Open this publication in new window or tab >>10 - Plasmonics for the Characterization of Metal Organic Films and Nanoparticles
2019 (English)In: Metal Nanostructures for Photonics, Elsevier , 2019, p. 223-259Chapter in book (Other academic)
Abstract [en]

Here, we present an overview of the ellipsometric characterization of hybrid thin films and metal nanoparticles by surface plasmon resonance (SPR) spectroscopy, together with the dynamic control of the optical properties of the latter for applications in optoelectronic devices. A description of traditional techniques used for the determination of the thickness and refractive index of organic thin films deposited over the SPR planar sensing platforms is presented, with a discussion of the most recent applications in the ellipsometric characterization of thin film of metal nanoparticles and graphene layers. We conclude by describing recent results developing a dynamically tunable plasmonic pixel, where the electric-field-controlled alignment of gold nanorods in a colloidal suspension can enable optical switching at frequencies greater than megahertz.

Place, publisher, year, edition, pages
Elsevier, 2019
Keywords
Surface plasmon resonance spectroscopy, Organic thin films, Metal nanoparticles, Graphene, Liquid crystals, Plasmonics, Electric field, Alignment, Display, Electro-optical switching, Optical fibers
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-36357 (URN)
Available from: 2018-12-14 Created: 2018-12-14 Last updated: 2018-12-14Bibliographically approved
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: 2019-11-25Bibliographically approved
Magalhães, R., Pereira, J., Garcia-Ruiz, A., Margulis, W., Martin-Lopez, S., Gonzalez-Herraez, M. & Martins, H. (2019). Distributed detection of quadratic Kerr effect in silica fibers using chirped-pulse φoTDR. 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 >>Distributed detection of quadratic Kerr effect in silica fibers using chirped-pulse φoTDR
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2019 (English)In: Proceedings of SPIE - The International Society for Optical Engineering, SPIE , 2019Conference paper, Published paper (Refereed)
Abstract [en]

Monitoring the presence of external electric fields over large distances and detecting losses along power transmission networks, is of extreme importance nowadays due to concerns with environment, efficiency, cost and safety. In this work, we evaluate a method to achieve distributed measurements of the quadratic electro-optic Kerr effect in silica fibers in a distributed way. For this purpose, we integrate a twin-hole fiber filled with BiSn alloy electrodes and monitor its electric-field induced refractive index (RI) change Δn by using a chirped-pulse phase-sensitive OTDR (CP-ΦOTDR). By exploiting its high sensitivity (RI changes of the order of 10-9), we demonstrate that the proposed system is able to detect the intrinsic quadratic electrooptic nonlinearity (the electric Kerr effect) in the fiber, an effect that is usually considered to be too weak to be exploited for practical applications. Additionally, we show that the CP-ΦOTDR is sufficiently sensitive to measure the electric Kerr effect with untreated standard telecommunication fibers under realistic fields.

Place, publisher, year, edition, pages
SPIE, 2019
Keywords
Distributed sensing, Kerr effect, Optical sensors, optical time domain reflectometry, Rayleigh scattering, Binary alloys, Bismuth alloys, Chirp modulation, Electric fields, Electric losses, Electric power transmission networks, Optical fibers, Refractive index, Silica, Tin alloys, Distributed detection, Distributed measurements, Electric field induced, Electrooptic nonlinearities, External electric field, Telecommunication fibers, Optical Kerr effect
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-40635 (URN)10.1117/12.2540755 (DOI)2-s2.0-85073362612 (Scopus ID)9781510631236 (ISBN)
Conference
7th European Workshop on Optical Fibre Sensors, EWOFS 2019, 1 October 2019 through 4 October 2019
Note

Funding details: Ministerio de Ciencia, Innovación y Universidades; Funding details: European Commission, EC, MSCA-ITN-ETN-722509; Funding details: Horizon 2020, 2020; Funding details: RTI2018-097957-B-C31; Funding details: Comunidad de Madrid; Funding details: Ministerio de Economía y Competitividad, MINECO, TEC2015-71127-C2-2-R; Funding text 1: This work was supported in part by: the European Commission through project MSCA-ITN-ETN-722509; the DOMINO Water JPI project, under the WaterWorks2014 cofounded call by EC Horizon 2020 and Spanish MINECO; the Spanish MINECO through project TEC2015-71127-C2-2-R; Comunidad de Madrid and FEDER Program under grant SINFOTON2-CM: P2018/NMT-4326; the Spanish Government under projects TEC2015-71127-C2-2-R and RTI2018-097957-B-C31. H.F.M. acknowledges financial support from the Spanish Ministerio de Ciencia, Innovación y Universidades (CIENCIA) under contract no. IJCI-2017-33856.

Available from: 2019-11-25 Created: 2019-11-25 Last updated: 2019-11-25Bibliographically approved
Magalhaes, R., Garcia-Ruiz, A., Martins, H., Pereira, J., Margulis, W., Martin-Lopez, S. & Gonzalez-Herraez, M. (2019). Fiber-based distributed bolometry. Optics Express, 27(4), 4317-4328
Open this publication in new window or tab >>Fiber-based distributed bolometry
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2019 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 27, no 4, p. 4317-4328Article in journal (Refereed) Published
Abstract [en]

Optical fibers are inherently designed to allow no interaction between the guided light and the surrounding optical radiation. Thus, very few optical fiber-based technologies exist in the field of optical radiation sensing. Accomplishing fully-distributed optical radiation sensing appears then as even more challenging since, on top of the lack of sensitivity explained above, we should add the need of addressing thousands of measurement points in a single, continuous optical cable. Nevertheless, it is clear that there exist a number of applications which could benefit from such a distributed sensing scheme, particularly if the sensitivity was sufficiently high to be able to measure correctly variations in optical radiation levels compatible with the earth surface. Distributed optical radiation sensing over large distances could be employed in applications such as Dynamic Line Rating (DLR), where it is known that solar radiation can be an important limiting factor in energy transmission through overhead power cables, and also in other applications such as thermo-solar energy. In this work, we present the proof-of-concept of the first distributed bolometer based on optical fiber technology and capable of detecting absolute changes of irradiance. The core idea of the system is the use of a special fiber coating with high emissivity (e.g., carbon coating or black paint). The high absorption of these coatings translates into a temperature change that can be read with sufficiently high sensitivity using phase-sensitive reflectometry. To demonstrate the concept, we interrogate distinct black-coated optical fibers using a chirped-pulse ÖOTDR, and we readily demonstrate the detection of light with resolutions in the order of 1% of the reference solar irradiance, offering a high-potential technology for integration in the aforementioned applications.

Keywords
Bolometers, Cables, Coatings, Optical fibers, Sensitivity analysis, Solar energy, Solar radiation, Textile fibers, Coated optical fibers, Distributed sensing, Dynamic line rating(DLR), Energy transmission, Fiber-based technology, Measurement points, Optical radiations, Temperature changes, Optical cables
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-38242 (URN)10.1364/OE.27.004317 (DOI)2-s2.0-85062047306 (Scopus ID)
Note

 Funding details: European Commission, EC, MSCA-ITN-ETN-722509; Funding text 1: H2020 European Research Council through project U FINE (307441); European Commission (MSCA-ITN-ETN-722509); DOMINO Water JPI project, under the WaterWorks2014 cofounded call by Horizon 2020 Framework Programme (European Union) and Ministerio de Economia y Competitividad, Spain; Ministerio de Economía y Competitividad, Spain (TEC2015-71127-C2-2-R, "Ramón y Cajal" contract); Sensores e INstrumentación en tecnologías FOTÓNicas (S2013/MIT-2790).

Available from: 2019-03-29 Created: 2019-03-29 Last updated: 2019-03-29Bibliographically approved
Garcia-Ruiz, A., Martins, H., Magalhães, R., Pereira, J., Tarasenko, O., Norin, L., . . . Gonzalez-Herraez, M. (2019). Hermetic carbon coatings for electro-thermal all-fiber phase modulators. Journal of Lightwave Technology, 37(18), 4567-4572
Open this publication in new window or tab >>Hermetic carbon coatings for electro-thermal all-fiber phase modulators
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2019 (English)In: Journal of Lightwave Technology, ISSN 0733-8724, E-ISSN 1558-2213, Vol. 37, no 18, p. 4567-4572Article in journal (Refereed) Published
Abstract [en]

Joule effect and thermal response of several carbon coated fibers are modelled and analysed. An electro thermally driven all-fiber phase modulator based on these principles is proposed and a proof of concept of it is characterized. This kind of fibers could be the basis for developing all fiber components aimed to operate in environments where the strength increase and impermeability to hydrogen diffusion guaranteed by the carbon coating is crucial.

Keywords
Carbon, Electrothermal effects, Optical fiber protective covering, Optical time domain reflectometry, Phase modulation, Rayleigh scattering
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-38592 (URN)10.1109/JLT.2019.2911426 (DOI)2-s2.0-85072563303 (Scopus ID)
Available from: 2019-05-09 Created: 2019-05-09 Last updated: 2020-01-10Bibliographically approved
Pereira, J., Hervás, J., Barrera, D., Madrigal, J., Sales, S., Laurell, F., . . . Margulis, W. (2019). High-voltage fiber sensor based on fiber Bragg grating in poled fiber. 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 >>High-voltage fiber sensor based on fiber Bragg grating in poled fiber
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2019 (English)In: Proceedings of SPIE - The International Society for Optical Engineering, SPIE , 2019Conference paper, Published paper (Refereed)
Abstract [en]

Fiber Bragg gratings (FBGs) in a poled silicate fiber are used to detect external voltage applied to the fiber's internal electrodes. This work shows a basic proof-of-concept of a single-ended, fiber-based voltage sensor that can be used to measure periodic high-voltage signals. The setup can be extended to a multiplexed e-field interrogation system and used in the electric power industry for remote sensing of transmission lines and power plants..

Place, publisher, year, edition, pages
SPIE, 2019
Keywords
E-field fiber sensor, FBG based sensors., Poling, Voltage fiber sensor, Electric industry, Electric lines, Electric power plants, Fibers, Remote sensing, Silicates, Electric power industries, External voltages, Fiber Bragg gratings (FBGs), Fiber Sensor, High-voltage signals, Internal electrodes, Interrogation system, Fiber Bragg gratings
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-40636 (URN)10.1117/12.2540628 (DOI)2-s2.0-85073387369 (Scopus ID)9781510631236 (ISBN)
Conference
7th European Workshop on Optical Fibre Sensors, EWOFS 2019, 1 October 2019 through 4 October 2019
Note

Conference code: 152312; Export Date: 4 November 2019; Conference Paper; CODEN: PSISD; Correspondence Address: Pereira, J.M.B.; Fiber Optics, RISE Acreo, Electrum 236, Sweden; email: joao.pereira@ri.se; Funding details: Marie Curie, 722509; Funding text 1: The authors acknowledge financial support from the FINESSE project. FINESSE is funded by the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska Curie grant agreement n° 722509. Partial funding from K. A. Wallenberg Foundation and the Swedish Science Council is gratefully acknowledged.

Available from: 2019-11-25 Created: 2019-11-25 Last updated: 2019-11-25Bibliographically approved
Pereira, J., Camara, A., Laurell, F., Tarasenko, O. & Margulis, W. (2019). Linear electro-optical effect in silica fibers poled with ultraviolet lamp. Optics Express, 27(10), 14893-14902
Open this publication in new window or tab >>Linear electro-optical effect in silica fibers poled with ultraviolet lamp
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2019 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 27, no 10, p. 14893-14902Article in journal (Refereed) Published
Abstract [en]

A second-order nonlinearity was induced in silica fibers poled by exposure to ultraviolet (UV) radiation and simultaneous high voltage applied to internal electrodes. The UV light source was a tubular lamp with spectral peak at 254 nm. The highest second-order nonlinear coefficient measured through the linear electro-optic effect was 0.062 pm/V. The erasure of the recorded voltage with UV excitation was studied, and the stability of the poled fiber at a temperature exceeding ~400 K was investigated. By eliminating the use of a focused laser beam as excitation source, the technique enables poling many pieces of fiber in parallel.

Place, publisher, year, edition, pages
OSA - The Optical Society, 2019
Keywords
Electrooptical effects, Laser beams, Laser excitation, Light sources, Silica, Excitation sources, Focused laser beams, Internal electrodes, Linear electro-optic effect, Nonlinear coefficient, Second orders, Second-order nonlinearity, UV excitation, Fibers
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-38914 (URN)10.1364/OE.27.014893 (DOI)2-s2.0-85065813577 (Scopus ID)
Note

Funding details: Marianne and Marcus Wallenberg Foundation, 2016.0104; Funding details: 2015.04346; Funding text 1: H2020 ITN FINESSE. (722509), K. A. Wallenberg Foundation (2016.0104), the Swedish Research Concil (2015.04346).

Available from: 2019-06-03 Created: 2019-06-03 Last updated: 2019-06-03Bibliographically approved
Franciscangelis, C., Lindblom, M., Margulis, W., Tow, K., Sjölander, O., Kahlman, L. & Bankeström, O. (2019). On-field validation of real-Time phase-OTDR for roller bearing monitoring. 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 >>On-field validation of real-Time phase-OTDR for roller bearing monitoring
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2019 (English)In: Proceedings of SPIE - The International Society for Optical Engineering, SPIE , 2019Conference paper, Published paper (Refereed)
Abstract [en]

This work presents an on-field validation of an in-house built real-Time phase-OTDR for monitoring the status of roller bearings. The acoustic sensor prototype was designed and assembled at RISE and evaluated on a 1 m diameter bearing at SKF AB facilities in Göteborg, Sweden. A 0.24 numerical aperture single-mode optical fiber was installed in the bearing lubrication groove, which is 50 mm large and 5 mm deep. Tests were performed to verify the response of the phaseOTDR to acoustic emissions in the bearing such as hammer hits and running the rollers at different loads. The fiber optic sensor results agree with the measurements performed by a standard industrial high sensitivity electronic accelerometer used for comparison. Moreover, as opposed to the reference electronic sensor, the phase-OTDR proved to be insensitive to electrical disturbances present on the environment.

Place, publisher, year, edition, pages
SPIE, 2019
Keywords
Acoustic sensing, Phase-OTDR, Roller bearing, Vibration, Acoustic emission testing, Fiber optic sensors, Optical fibers, Rollers (machine components), Bearing monitoring, Electrical disturbances, Electronic sensors, Numerical aperture, Single-mode optical fiber, Roller bearings
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-40628 (URN)10.1117/12.2541266 (DOI)2-s2.0-85073345258 (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: 2019-11-25Bibliographically approved
Pereira, J., Camara, A., Laurell, F., Tarasenko, O. & Margulis, W. (2019). Poling optical fibers with UV lamp. In: Conference on Lasers and Electro-Optics OSA Technical Digest (Optical Society of America, 2019), paper SM2L.5: . Paper presented at CLEO: Science and Innovations 2019 San Jose, California United States 5–10 May 2019. OSA - The Optical Society, Article ID SM2L.5.
Open this publication in new window or tab >>Poling optical fibers with UV lamp
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2019 (English)In: Conference on Lasers and Electro-Optics OSA Technical Digest (Optical Society of America, 2019), paper SM2L.5, OSA - The Optical Society , 2019, article id SM2L.5Conference paper, Published paper (Refereed)
Abstract [en]

Silicate fibers with internal electrodes are optically poled without a laser by side-exposure to radiation from a UV tubular lamp. Electrooptic coefficients χ(2) ~ 0.04 pm/V and Vπ = 810 V are obtained.

Place, publisher, year, edition, pages
OSA - The Optical Society, 2019
Keywords
Optical fibers, Electro optic coefficient, Internal electrodes, Silicate fibers, Silicates
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-39379 (URN)10.1364/CLEO_SI.2019.SM2L.5 (DOI)2-s2.0-85068138254 (Scopus ID)9781557528209 (ISBN)
Conference
CLEO: Science and Innovations 2019 San Jose, California United States 5–10 May 2019
Note

Conference code: 141098; Export Date: 8 July 2019; Conference Paper; Funding details: Horizon 2020, 722509; Funding text 1: The authors acknowledge financial support from the FINESSE project. FINESSE is funded by the European Union's Horizon 2020 research and innovation programme under the Marie Slodowska - Curie grant agreement n° 722509. Partial funding from K. A. Wallenberg Foundation and the Swedish Science Council is gratefully acknowledged. We also thank Prof. I. C. S. Carvalho (PUC-Rio, Brazil) for useful discussions.

Available from: 2019-07-08 Created: 2019-07-08 Last updated: 2019-07-08Bibliographically approved
Pereira, J. M., Camara, A. R., Laurell, F., Tarasenko, O. & Margulis, W. (2019). Poling Optical Fibers with UV Lamp. In: 2019 Conference on Lasers and Electro-Optics, CLEO 2019 - Proceedings: . Paper presented at 2019 Conference on Lasers and Electro-Optics, CLEO 2019, 5 May 2019 through 10 May 2019. Institute of Electrical and Electronics Engineers Inc.
Open this publication in new window or tab >>Poling Optical Fibers with UV Lamp
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2019 (English)In: 2019 Conference on Lasers and Electro-Optics, CLEO 2019 - Proceedings, Institute of Electrical and Electronics Engineers Inc. , 2019Conference paper, Published paper (Refereed)
Abstract [en]

Silicate fibers with internal electrodes are optically poled without a laser by side-exposure to radiation from a UV tubular lamp. Electrooptic coefficients κ(2)∼ 0.04 pm/V and Vπ = 810 V are obtained

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers Inc., 2019
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-39665 (URN)10.23919/CLEO.2019.8750132 (DOI)2-s2.0-85069214949 (Scopus ID)9781943580576 (ISBN)
Conference
2019 Conference on Lasers and Electro-Optics, CLEO 2019, 5 May 2019 through 10 May 2019
Note

Funding details: 722509; Funding text 1: The authors acknowledge financial support from the FINESSE project. FINESSE is funded by the European Union’s Horizon 2020 research and innovation programme under the Marie Slodowska - Curie grant agreement n° 722509. Partial funding from K. A. Wallenberg Foundation and the Swedish Science Council is gratefully acknowledged. We also thank Prof. I. C. S. Carvalho (PUC-Rio, Brazil) for useful discussions.

Available from: 2019-08-07 Created: 2019-08-07 Last updated: 2019-08-07Bibliographically approved
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-8058-2140

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