Dr. Carlos F. Marques Profile

Dr. Carlos F. Marques

Research Scientist at Univ de Aveiro

SPIE Involvement:

Conference Program Committee | Author

Area of Expertise:

fiber Bragg gratings , biosensing , polymer optical fibers , data processing , optical sensing solutions , nanophotonics devices

Websites:

Personal Website | Company Website

Profile Summary

Carlos Marques received the M.S. degree and the Ph.D. degree in Physics Engineering from the University of Aveiro, Portugal, in 2008 and 2013, respectively. From 2007 to March 2014, he was a Research Fellow at Instituto de Telecomunicações, Aveiro, Portugal. Then, he was a Marie Curie Fellow in the Aston Institute of Photonics Technologies, Aston University, Birmingham, U.K until March 2016. Currently, he is a Research Scientist in the Physics Department & I3N, University of Aveiro, Portugal. His main interests include photonics devices and fabrication of short/long period gratings for optical communications and sensing applications. He authored or co-authored more than 90 journals and 85 conference technical papers with emphasis on optical communications and sensing applications. He participated in more than 15 research projects and he also acts as referee of several high level international journals from IEEE, Elsevier, OSA, Nature, AIP, IOP, SPIE, MDPI, Wiley, among others. He is also an Associate Editor of IEEE Sensors Journal and Optical Fiber Technology (Elsevier), and an Editorial Member of MDPI Sensors and Journal of Sensors.

Publications (45)

Proceedings Article | 20 June 2024 Paper

Paper

New approach for speed and direction measurement by fiber optic sensor

Jakub Cubik, Jan Nedoma, Marcel Fajkus, Stanislav Hejduk, Daniel Krizan, Carlos Marques

Proceedings Volume 13001, 130010K (2024) https://doi.org/10.1117/12.3016970

KEYWORDS: Michelson interferometers, Vibration, Sensors, Interferometers, Fiber optics sensors, Design, Roads, Photodetectors, Optical testing, Mirrors

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Proceedings Article | 20 June 2024 Poster + Paper

Poster + Paper

Design and measurement of fiber optic VLC transmitter based on POF

Stanislav Hejduk, Ales Vanderka, Lukas Hajek, Jan Nedoma, Jan Latal, Petr Siska, Daniel Krizan, Jakub Cubik, Carlos Marques

Proceedings Volume 13001, 130010J (2024) https://doi.org/10.1117/12.3017451

KEYWORDS: Transmitters, Visible light communication, Optical spheres, Design, Optical fibers, Polydimethylsiloxane, Light sources and illumination, Telecommunications

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Proceedings Article | 20 June 2024 Poster + Paper

Poster + Paper

Non-invasive fiber-optic wrist sensor for monitoring heart rate of the human body

Daniel Krizan, Michael Fridrich, Jiri Stipal, Marcel Fajkus, Jan Nedoma, Radek Martinek, Daniela Lo Presti, Carlos Marques

Proceedings Volume 12999, 129992F (2024) https://doi.org/10.1117/12.3017475

KEYWORDS: Fiber optics sensors, Fiber Bragg gratings, Sensors, Fiber optics, Bragg wavelengths, Heart, Electrocardiography, Reflection, Optical fibers

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Proceedings Article | 31 May 2023 Presentation

Presentation

Liquid crystal-based polarization immunosensor for Escherichia coli detection (Conference Presentation)

Simone Soares, Rita Sobral, Carlos Marques, Pedro Almeida

Proceedings Volume 12572, 125720N (2023) https://doi.org/10.1117/12.2667964

KEYWORDS: Liquid crystals, Bacteria, Polarization, Liquids, Crystals, Glasses, Industry, Antibodies, Water, Visualization

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Proceedings Article | 23 May 2023 Paper

Paper

Dual parameters discrimination comparison between two types of optical fiber sensors during the operation of a Li-ion battery

Lucca Matuck, João Pinto, Carlos A. Marques, Micael Nascimento

Proceedings Volume 12643, 126431A (2023) https://doi.org/10.1117/12.2678091

KEYWORDS: Sensors, Fiber Bragg gratings, Batteries, Laser induced breakdown spectroscopy, Spectral response, Temperature metrology, Fiber optics sensors, Reflection, Single mode fibers, Optical fibers

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Proceedings Article | 23 May 2023 Paper

Paper

Gait monitoring system based on plastic optical fiber integrated with smartphone

Jun Chen, Chuanxin Teng, Renfei Kuang, Zhuo Wang, Xuehao Hu, Beatriz Ortega, Carlos Marques, Xiaoli Li, Rui Min

Proceedings Volume 12643, 126430I (2023) https://doi.org/10.1117/12.2678155

KEYWORDS: Sensors, Gait analysis, Phase only filters, Optical sensing, Sensing systems, Intelligence systems, Polymer optical fibers, Image segmentation, Data processing, Cameras

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Proceedings Article | 23 May 2023 Paper

Paper

Concrete curing monitoring using polymer optical fibre Bragg grating sensors

A. Pospori, A. Ioannou, J. Melo, P. Antunes, H. Varum, C. A. Marques, K. Kalli

Proceedings Volume 12643, 126430H (2023) https://doi.org/10.1117/12.2678107

KEYWORDS: Civil engineering, Sensors, Optical fibers, Prototyping, Polymers, Polymeric sensors, Bragg gratings, Optical sensing, Moisture, Bragg wavelengths

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Proceedings Article | 19 May 2022 Presentation + Paper

Presentation + Paper

Study of bare and plasmonic tilted fiber Bragg gratings in the detection of a heart failure biomarker: relevance of different spectral demodulation methods

Miguel Vidal, M. Simone Soares, Maxime Lobry, Christophe Caucheteur, Florinda Costa, Carlos Marques, Sónia Pereira, Cátia Leitão, Médéric Loyez

Proceedings Volume 12140, 121400L (2022) https://doi.org/10.1117/12.2623932

KEYWORDS: Plasmonics, Fiber Bragg gratings, Biosensors, Spectrum analysis, Optical fibers

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Proceedings Article | 19 May 2022 Presentation + Paper

Presentation + Paper

D-shape optical fiber immunosensors based on SPR for cortisol detection: simulation and experimental procedure

M. Soares, D. Rodrigues, M. Vidal, M. Facão, N. Cennamo, L. Zeni, C. Caucheteur, F. Costa, C. Leitão, S. Pereira, N. Santos, C. Marques

Proceedings Volume 12140, 121400C (2022) https://doi.org/10.1117/12.2620806

KEYWORDS: Optical fibers, Sensors, Glucose, Gold, Phase only filters, Transmittance, Ocean optics, Blood, Point-of-care devices, Cladding

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Stress is a normal physiological and behavioral response to a stimulus that somehow disturbs the maintenance of homeostasis, leading to changes in cortisol levels. When stress is persistent and uncontrolled, it can severely affect several areas, such as human health and some marine biology sectors, including aquaculture production. Currently, the detection of cortisol is performed in laboratories using conventional techniques with several disadvantages, one of them being the long waiting time for a response. Therefore, it is essential the development of miniaturized analytical devices capable of monitoring in real-time, detecting and quantifying cortisol in point of care (POC). Special optical fiber structure, in this case, D-shape in silica optical fibers (SOF) and polymeric optical fibers (POF) coated with gold (Au) were used in this work for the development of immunosensors based on surface plasmon resonance (SPR) for cortisol (stress hormone) detection. In the laboratory, Au coated SOF (Au-SOF) and Au coated POF (Au-POF) were initially characterized at refractive index (RI) with eight glucose concentrations ranging from 1.333 to 1.386 RI units (RIU). The obtained sensitivities were, respectively, 1646.67 ± 91.66 nm/RIU, being lower than the simulated one with 2138.95 ± 142.65 nm/RIU, and 1566.81 ± 96.87 nm/RIU. Subsequently, the fibers were functionalized with anti-cortisol antibodies using cysteamine as the intermediate linker to allow the immobilization of the antibodies to the Au surface. After this procedure, both immunosensors were tested for cortisol concentrations ranging from 0.1 to 100 ng/ml to compare the performances, in which the Au-SOF and Au-POF immunosensors presented a total resonance wavelength shift of 3.22 and 2.10 nm, and sensitivities of 1.08 ± 0.21 nm/log(ng/mL) and 0.52 ± 0.03 nm/log(ng/mL), respectively. Different limits of detection (LODs) were calculated using different methods for each type of immunosensor. One method consisted in performing a Hill fitting to the results and another considering the response of the control interferents. For Au-SOF and Au-POF, the LODs attained through the first method were 0.12 and 0.13 ng/mL (considering the resonance wavelength shift), respectively, and 0.14 ng/mL considering the intensity variation of Au-POF. The second method enabled a LOD of 1.75 and 1.97 ng/mL for Au-SOF and Au-POF, respectively.

Proceedings Article | 18 April 2021 Presentation + Paper

Presentation + Paper

Radiation induced effects on FBGs using different femtosecond laser inscription methods

A. Theodosiou, A. Leal-Junior, C. Marques, A. Frizera, A. J. Fernandes, A. Stancalie, A. Ioannou, D. Negut, K. Kalli

Proceedings Volume 11773, 117730P (2021) https://doi.org/10.1117/12.2592376

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Proceedings Article | 1 April 2020 Paper

Paper

Detection of water, oil and oil contamination in water using chirped fiber Bragg gratings inscribed in CYTOP fibers

Arnaldo Leal, Vinicius Campos, Antreas Theodosiou, Anselmo Frizera, Kyriacos Kalli, Carlos Marques

Proceedings Volume 11355, 1135513 (2020) https://doi.org/10.1117/12.2558483

KEYWORDS: Sensors, Contamination, Fiber Bragg gratings, Minerals, Polymer optical fibers, Absorption, Femtosecond phenomena, Temperature metrology, Optical fibers, Polymers

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Proceedings Article | 1 April 2020 Paper

Paper

Femtosecond laser written long period grating in a multimode CYTOP polymer fibre

Antreas Theodosiou, Rui Min, Arnaldo Leal, Andreas Ioannou, Anselmo Frizera-Neto, Maria Jose Pontes, Carlos Marques, Kyriacos Kalli

Proceedings Volume 11355, 1135502 (2020) https://doi.org/10.1117/12.2557804

KEYWORDS: Polymers, Humidity, Femtosecond phenomena, Sensors, Cladding, Temperature metrology, Fiber Bragg gratings, Gradient-index optics, Polymeric sensors, Optical sensors

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Proceedings Article | 1 April 2020 Presentation + Paper

Presentation + Paper

Adhesive assisted fabrication of chirped POF Bragg grating

Rui Min, Luís Pereira, Tiago Paixão, Getinet Woyessa, Paulo André, Ole Bang, Anselmo Frizera, Paulo Antunes, Joao Pinto, Zhaohui Li, Beatriz Ortega, Carlos Marques

Proceedings Volume 11355, 1135510 (2020) https://doi.org/10.1117/12.2555432

KEYWORDS: Fiber Bragg gratings, Refractive index, Bragg gratings, Polymer optical fibers, Adhesives, Sensors, Ultraviolet radiation

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Proceedings Article | 1 April 2020 Presentation + Paper

Presentation + Paper

Simulation study on fluoride fiber SPR sensor with multilayer arrangements of graphene under thermal variation of radiation damping in NIR

Anuj Sharma, Baljinder Kaur, Carlos Marques

Proceedings Volume 11354, 113542F (2020) https://doi.org/10.1117/12.2555698

KEYWORDS: Sensors, Graphene, Fiber optics sensors, Near infrared, Silver, Bioalcohols, Multilayers, ZBLAN, Fiber optics, Metals

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Proceedings Article | 28 August 2019 Paper

Paper

Proof-of-concept of a carpet-embedded heterogeneous optical fiber sensor system for gait analysis

Arnaldo Leal, Letícia Avellar, Maria José Pontes, Carmilo Díaz, Carlos Marques, Anselmo Frizera

Proceedings Volume 11199, 111990R (2019) https://doi.org/10.1117/12.2541308

KEYWORDS: Sensors, Fiber Bragg gratings, Polymer optical fibers, Gait analysis, Fiber optics sensors, Optical fibers

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Proceedings Article | 28 August 2019 Paper

Paper

Utilising thermal annealing for multiplexing and sensitivity enhancement of polymer optical fibre sensors

A. Pospori, C. A. Marques, G. Sagias, H. Lamela-Rivera, D. Sáez-Rodríguezd, K. Nielsen, O. Bang, D. Webb

Proceedings Volume 11199, 111993E (2019) https://doi.org/10.1117/12.2541767

KEYWORDS: Annealing, Sensors, Polymers, Polymer optical fibers, Multiplexing, Optical fibers, Bragg gratings, Polymeric sensors, Humidity, Polymethylmethacrylate

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Proceedings Article | 11 April 2019 Paper

Paper

Optical fibre fuse effect based sensor for magnetic field monitoring

Nélia Alberto, M. Fátima Domingues, João Belo, Carlos Marques, Paulo Antunes, Vitor Amaral, Paulo André

Proceedings Volume 11028, 110281S (2019) https://doi.org/10.1117/12.2520759

KEYWORDS: Magnetism, Magnetic sensors, Sensors, Optical fibers, Refractive index, Fabry–Perot interferometers, Microfluidics, Electromagnetism, Electromagnetic interference, Head

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Proceedings Article | 17 May 2018 Paper

Paper

Arterial pulses assessed with FBG based films: a smart skin approach

C. Leitão, M. Fátima Domingues, S. Novais, C. Tavares, J. Pinto, C. Marques, P. Antunes

Proceedings Volume 10685, 106852S (2018) https://doi.org/10.1117/12.2307458

KEYWORDS: Fiber Bragg gratings, Arteries, Optical fibers, Sensors

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Proceedings Article | 9 May 2018 Presentation + Paper

Presentation + Paper

LPG inscription in mPOF for optical sensing

Rui Min, Carlos Marques, Ole Bang, Beatriz Ortega

Proceedings Volume 10681, 1068108 (2018) https://doi.org/10.1117/12.2306451

KEYWORDS: Fiber Bragg gratings, Temperature metrology, Ultraviolet radiation, Optical sensing, Polymer optical fibers, Polymers, Silica, Phase only filters, Pulsed laser operation, Fiber lasers

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Proceedings Article | 9 May 2018 Paper

Paper

Biaxial optical fiber sensor based in two multiplexed Bragg gratings for simultaneous shear stress and vertical pressure monitoring

C. Tavares, M. Domingues, A. Frizera-Neto, C. Leitão, N. Alberto, C. Marques, A. Radwan, E. Rocon, P. André, P. Antunes

Proceedings Volume 10680, 106802R (2018) https://doi.org/10.1117/12.2306889

KEYWORDS: Sensors, Fiber Bragg gratings, Fiber optics sensors, Optical fibers, Optical sensors, Multiplexing, Calibration, Bragg gratings, Data acquisition, Epoxies

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Proceedings Article | 22 February 2018 Paper

Paper

A cost-effective edge-filter-based FBG strain interrogator using catastrophic fuse effect microcavity interferometers

Camilo A. Díaz, Carlos A. Marques, M. Fátima Domingues, Moisés R. Ribeiro, Anselmo Neto, Maria Pontes, Paulo André, Paulo F. Antunes

Proceedings Volume 10528, 105281W (2018) https://doi.org/10.1117/12.2291042

KEYWORDS: Fiber Bragg gratings, Sensors, Interferometers, Optical microcavities, Optical fibers, Temperature metrology, Optical filters, Fiber optics sensors

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Proceedings Article | 16 May 2017 Paper

Paper

Acoustic waves in tilted fiber Bragg gratings for sensing applications

Carlos A. Marques, Nélia Alberto, Fátima Domingues, Cátia Leitão, Paulo Antunes, João Pinto, Paulo André

Proceedings Volume 10231, 1023116 (2017) https://doi.org/10.1117/12.2264230

KEYWORDS: Acoustics, Fiber Bragg gratings, Acousto-optics, Optical sensing, Optical sensors, Cladding, Fiber optics sensors, Sensor technology, Silica, Polymer optical fibers, Ferroelectric materials, Phase matching, Refractive index, Modulation

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Proceedings Article | 16 May 2017 Presentation + Paper

Presentation + Paper

Impact of thermal pre-treatment on preforms for fast Bragg gratings inscription using undoped PMMA POFs

Carlos Marques, Andreas Pospori, Pawel Mergo, Paulo André, David Webb

Proceedings Volume 10232, 102320A (2017) https://doi.org/10.1117/12.2264229

KEYWORDS: Ultraviolet radiation, Pulsed laser operation, Humidity, Helium cadmium lasers, Laser systems engineering, Fiber Bragg gratings, Polymer optical fibers, Annealing, Sensors, Polymethylmethacrylate, Optical components, Materials processing, Optical fabrication

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Proceedings Article | 16 May 2017 Paper

Paper

Chirped polymer optical fiber Bragg grating sensors

Carlos Marques, L. Pereira, P. Antunes, P. Mergo, D. Webb, J. Pinto, P. André

Proceedings Volume 10232, 102320N (2017) https://doi.org/10.1117/12.2264902

KEYWORDS: Polymer optical fibers, Fiber Bragg gratings, Sensors, Phase only filters, Polymethylmethacrylate, Polymers, Optical fibers, Ultraviolet radiation, Excimer lasers, Silica, Structural health monitoring

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SPIE Journal Paper | 28 February 2017 Open Access

Open Access

Insole optical fiber Bragg grating sensors network for dynamic vertical force monitoring

Maria Fátima Domingues, Cátia Tavares, Cátia Leitão, Anselmo Neto, Nélia Alberto, Carlos Marques, Ayman Radwan, Jonathan Rodriguez, Octavian Postolache, Eduardo Rocon, Paulo André, Paulo Antunes

JBO, Vol. 22, Issue 09, 091507, (February 2017) https://doi.org/10.1117/12.10.1117/1.JBO.22.9.091507

KEYWORDS: Fiber Bragg gratings, Gait analysis, Sensors, Optical fibers, Sensor networks, Calibration, Sensing systems, Chemical elements, Optical sensing, Pathology

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Proceedings Article | 30 May 2016 Paper

Paper

Sensitivity enhancement using annealed polymer optical-fibre-based sensors for pressure sensing applications

A. Pospori, C. Marques, D. Sáez-Rodríguez, K. Nielsen, O. Bang, D. Webb

Proceedings Volume 9916, 99160E (2016) https://doi.org/10.1117/12.2236877

KEYWORDS: Polymeric sensors, Polymers, Sensors, Annealing, Fiber Bragg gratings, Mechanical sensors, Multiplexing, Optical fibers, Liquids, Humidity, Polymethylmethacrylate

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Proceedings Article | 29 April 2016 Paper

Paper

Recycling optical fibers for sensing

Paulo André, Fátima Domingues, Nélia Alberto, Carlos Marques, Paulo Antunes

Proceedings Volume 9899, 98991F (2016) https://doi.org/10.1117/12.2225245

KEYWORDS: Sensors, Optical fibers, Modulation, Refractive index, Humidity, Optical sensing, Fiber optics sensors, Head, Water, Environmental sensing

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Proceedings Article | 27 April 2016 Paper

Paper

Annealing effects on strain and stress sensitivity of polymer optical fibre based sensors

A. Pospori, C. Marques, M. Zubel, D. Sáez-Rodríguez, K. Nielsen, O. Bang, D. Webb

Proceedings Volume 9886, 98860V (2016) https://doi.org/10.1117/12.2227473

KEYWORDS: Annealing, Sensors, Optical fibers, Polymers, Fiber Bragg gratings, Polymethylmethacrylate

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Proceedings Article | 27 April 2016 Paper

Paper

Fuel level sensor based on polymer optical fiber Bragg gratings for aircraft applications

C. Marques, A. Pospori, D. Sáez-Rodríguez, K. Nielsen, O. Bang, D. Webb

Proceedings Volume 9886, 98860W (2016) https://doi.org/10.1117/12.2225918

KEYWORDS: Sensors, Polymer optical fibers, Liquids, Fiber Bragg gratings, Polyurethane, Polymethylmethacrylate, Optical fibers, Silicon, Reflectivity, Safety

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Proceedings Article | 28 September 2015 Paper

Paper

Fiber optic liquid level monitoring system using microstructured polymer fiber Bragg grating array sensors: performance analysis

C. Marques, A. Pospori, D. Sáez-Rodríguez, K. Nielsen, O. Bang, D. Webb

Proceedings Volume 9634, 96345V (2015) https://doi.org/10.1117/12.2193898

KEYWORDS: Sensors, Liquids, Fiber Bragg gratings, Optical fibers, Sensor performance, Polymer optical fibers, Temperature metrology, Polymers, Silicon, Fiber optics

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Proceedings Article | 7 May 2015 Paper

Paper

High performance liquid level monitoring system based on polymer fiber Bragg gratings embedded in silicone rubber diaphragms

Carlos A. Marques, Gang-Ding Peng, David Webb

Proceedings Volume 9507, 95070N (2015) https://doi.org/10.1117/12.2180563

KEYWORDS: Sensors, Liquids, Fiber Bragg gratings, Optical fibers, Silicon, Phase only filters, Temperature metrology, Environmental sensing, Silica, Polymers

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Liquid-level sensing technologies have attracted great prominence, because such measurements are essential to industrial applications, such as fuel storage, flood warning and in the biochemical industry. Traditional liquid level sensors are based on electromechanical techniques; however they suffer from intrinsic safety concerns in explosive environments. In recent years, given that optical fiber sensors have lots of well-established advantages such as high accuracy, costeffectiveness, compact size, and ease of multiplexing, several optical fiber liquid level sensors have been investigated which are based on different operating principles such as side-polishing the cladding and a portion of core, using a spiral side-emitting optical fiber or using silica fiber gratings. The present work proposes a novel and highly sensitive liquid level sensor making use of polymer optical fiber Bragg gratings (POFBGs). The key elements of the system are a set of POFBGs embedded in silicone rubber diaphragms. This is a new development building on the idea of determining liquid level by measuring the pressure at the bottom of a liquid container, however it has a number of critical advantages. The system features several FBG-based pressure sensors as described above placed at different depths. Any sensor above the surface of the liquid will read the same ambient pressure. Sensors below the surface of the liquid will read pressures that increase linearly with depth. The position of the liquid surface can therefore be approximately identified as lying between the first sensor to read an above-ambient pressure and the next higher sensor. This level of precision would not in general be sufficient for most liquid level monitoring applications; however a much more precise determination of liquid level can be made by linear regression to the pressure readings from the sub-surface sensors. There are numerous advantages to this multi-sensor approach. First, the use of linear regression using multiple sensors is inherently more accurate than using a single pressure reading to estimate depth. Second, common mode temperature induced wavelength shifts in the individual sensors are automatically compensated. Thirdly, temperature induced changes in the sensor pressure sensitivity are also compensated. Fourthly, the approach provides the possibility to detect and compensate for malfunctioning sensors. Finally, the system is immune to changes in the density of the monitored fluid and even to changes in the effective force of gravity, as might be obtained in an aerospace application. The performance of an individual sensor was characterized and displays a sensitivity (54 pm/cm), enhanced by more than a factor of 2 when compared to a sensor head configuration based on a silica FBG published in the literature, resulting from the much lower elastic modulus of POF. Furthermore, the temperature/humidity behavior and measurement resolution were also studied in detail. The proposed configuration also displays a highly linear response, high resolution and good repeatability. The results suggest the new configuration can be a useful tool in many different applications, such as aircraft fuel monitoring, and biochemical and environmental sensing, where accuracy and stability are fundamental.

Proceedings Article | 4 March 2015 Paper

Paper

Yellow laser light generation by frequency doubling of the output from a master oscillator fiber power amplifier system

Manuel Ryser, Carlos Marques, Rogério Nogueira, Valerio Romano

Proceedings Volume 9344, 934410 (2015) https://doi.org/10.1117/12.2080203

KEYWORDS: Second-harmonic generation, Optical fibers, Fiber Bragg gratings, Optical amplifiers, Optical filters, Crystals, Electronic filtering, Amplifiers, Fiber lasers, Oscillators

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Proceedings Article | 2 June 2014 Paper

Paper

Production and characterization of Bragg gratings in polymer optical fibers for sensors and optical communications

R. Oliveira, C. A. Marques, L. Bilro, R. Nogueira

Proceedings Volume 9157, 915794 (2014) https://doi.org/10.1117/12.2058861

KEYWORDS: Fiber Bragg gratings, Polymer optical fibers, Annealing, Sensors, Optical communications, Polymers, Optical components, Optical fibers, Near infrared, Signal attenuation

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Proceedings Article | 2 June 2014 Paper

Paper

Refractive index and viscosity: dual sensing with plastic fibre gratings

Ricardo Ferreira, Lúcia Bilro, Carlos Marques, Ricardo Oliveira, Rogério Nogueira

Proceedings Volume 9157, 915793 (2014) https://doi.org/10.1117/12.2058833

KEYWORDS: Refractive index, Sensors, Calibration, Fiber Bragg gratings, Modulation, Acousto-optics, Glucose, Silica, Bragg cells, Optical fibers

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Proceedings Article | 20 May 2013 Paper

Paper

Inscription of narrow bandwidth Bragg gratings in polymer optical fibers

Carlos A. Marques, Lúcia Bilro, David Webb, Rogério Nogueira

Proceedings Volume 8794, 879423 (2013) https://doi.org/10.1117/12.2026089

KEYWORDS: Fiber Bragg gratings, Polymer optical fibers, Optical fibers, Ocean optics, CMOS technology, Fiber lasers, Wavelength division multiplexing, Sensing systems, Signal attenuation, Polymers

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Proceedings Article | 17 October 2012 Paper

Paper

Acousto-optic modulation in a microstructured plastic optical fibre Bragg grating

L. Bilro, C. A. Marques, L. Khan, R. Oliveira, D. Webb, R. Nogueira

Proceedings Volume 8421, 842156 (2012) https://doi.org/10.1117/12.975197

KEYWORDS: Fiber Bragg gratings, Acoustics, Acousto-optics, Ferroelectric materials, Silica, Modulation, Optical fibers, Phase only filters, Polymers, Polymethylmethacrylate

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Proceedings Article | 17 October 2012 Paper

Paper

Nanodiamond coated Bragg gratings for sensing applications

N. Alberto, J. Santos, C. A. Marques, V. F. Neto, R. Nogueira

Proceedings Volume 8421, 842120 (2012) https://doi.org/10.1117/12.974993

KEYWORDS: Fiber Bragg gratings, Diamond, Coating, Sensors, Optical fibers, Resistance, Raman spectroscopy, Reflection, Fiber optics sensors, Scanning electron microscopy

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Proceedings Article | 26 July 2011 Paper

Paper

Multichannel dispersion compensation using a simplified approach SFBG design

Luís Sá, Carlos Marques, Nélia Alberto, Rogério Nogueira, Paulo André

Proceedings Volume 8001, 800143 (2011) https://doi.org/10.1117/12.892100

KEYWORDS: Picosecond phenomena, Phase modulation, Modulation, Optical design, Fiber Bragg gratings, Apodization, Phase shift keying, Reflectivity, Dispersion, Refractive index

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Proceedings Article | 26 July 2011 Paper

Paper

Photonic instantaneous RF frequency measurement system based on complementary modulation

Miguel Drummond, Carlos Marques, Paulo Monteiro, Rogério Nogueira

Proceedings Volume 8001, 80012H (2011) https://doi.org/10.1117/12.891887

KEYWORDS: Modulation, Modulators, Optical filters, Fiber Bragg gratings, RF photonics, Electrodes, Signal detection, Electro optics, Electromagnetism, Microwave photonic filters

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Proceedings Article | 26 July 2011 Paper

Paper

Comparative study of different parameters of fibre Bragg gratings and long period gratings sensors for high-temperature measurements

Luis Melo, Nara Ângelo, Nelia Aberto, Carlos Marques, José Monteiro, Gaspar Rego, Paulo Caldas, Rogério Nogueira

Proceedings Volume 8001, 800123 (2011) https://doi.org/10.1117/12.892166

KEYWORDS: Fiber Bragg gratings, Ultraviolet radiation, Sensors, Temperature metrology, Hydrogen, Optical fibers, Resistance, Refractive index, Cladding, Phase shift keying

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Proceedings Article | 26 July 2011 Paper

Paper

Integrated optics structures on sol-gel derived organic-inorganic hybrids for optical communications

P. André, C. M. S. Vicente, V. Fernandes, C. Marques, E. Pecoraro, R. Nogueira, N. Wada, L. Carlos, P. Marques, R. A. S. Ferreira

Proceedings Volume 8001, 800120 (2011) https://doi.org/10.1117/12.894538

KEYWORDS: Refractive index, Integrated optics, Optical filters, Sol-gels, Planar waveguides, Fiber Bragg gratings, Waveguides, Scanning electron microscopy, Dielectrics, Optical communications

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Proceedings Article | 26 July 2011 Paper

Paper

Simultaneous temperature and refractive index sensor based on a tilted fibre Bragg grating

Nélia Alberto, Carlos Marques, João L. Pinto, Rogério N. Nogueira

Proceedings Volume 8001, 800124 (2011) https://doi.org/10.1117/12.892217

KEYWORDS: Sensors, Temperature metrology, Refractive index, Cladding, Fiber Bragg gratings, Error analysis, Biosensing, Optical components, Environmental sensing, Etching

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Proceedings Article | 18 May 2011 Paper

Paper

Acousto-optic control of the LPG spectrum for sensing applications

Roberson Oliveira, Gustavo R. Possetti, Carlos A. Marques, Paulo Neves, Carlos Bavastri, Ricardo Kamikawachi, José Fabris, Marcia Muller, Rogério Nogueira, John Canning, Alexandre A. Pohl

Proceedings Volume 7753, 77538Y (2011) https://doi.org/10.1117/12.885101

KEYWORDS: Acoustics, Acousto-optics, Refractive index, Cladding, Modulation, Ferroelectric materials, Signal attenuation, Tunable filters, Laser resonators, Switching

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Proceedings Article | 18 May 2011 Paper

Paper

Three parameters simultaneous measurement with a single TFBG

Nélia Alberto, Carlos Marques, Paulo Antunes, João Pinto, Rogério Nogueira

Proceedings Volume 7753, 77537Z (2011) https://doi.org/10.1117/12.885117

KEYWORDS: Sensors, Cladding, Temperature metrology, Refractive index, Fiber Bragg gratings, Environmental monitoring, Environmental sensing, Light wave propagation, Optical resolution, Biomedical optics

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Proceedings Article | 9 September 2010 Paper

Paper

Simultaneous strain and refractive index sensor based on a TFBG

Nélia Alberto, Carlos Marques, João Pinto, Rogério Nogueira

Proceedings Volume 7653, 765324 (2010) https://doi.org/10.1117/12.866344

KEYWORDS: Sensors, Refractive index, Cladding, Fiber Bragg gratings, Temperature metrology, Light wave propagation, Fiber optics sensors, Modulation, Optical fibers, Current controlled current source

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Showing 5 of 45 publications

Conference Committee Involvement (6)

Specialty Optical Fibres VIII

9 April 2024 | Strasbourg, France

Micro-Structured and Specialty Optical Fibres VII

6 April 2022 | Strasbourg, France

Micro-Structured and Specialty Optical Fibres VI

6 April 2020 | Online Only, France

18th edition of the SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)

10 November 2019 |

POF2016

12 September 2016 |

Showing 5 of 6 Conference Committees

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