Dr. Luís C. Coelho Profile

Dr. Luís C. Coelho

Researcher at INESC TEC

SPIE Involvement:

Author

Publications (27)

Proceedings Article | 1 April 2020 Presentation + Paper

Femtosecond laser-written long period fibre gratings coated with titanium dioxide for improved sensitivity

Duarte Viveiros, José M. M. M. de Almeida, Luís Coelho, Helena Vasconcelos, Vítor Amorim, João Maia, Pedro A. S. Jorge, Paulo V. Marques

Proceedings Volume 11354, 113540C (2020) https://doi.org/10.1117/12.2555686

KEYWORDS: Cladding, Optical fibers, Refractive index, Titanium dioxide, Femtosecond phenomena, Fiber coatings, Fiber lasers, Coating, Thin films

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Proceedings Article | 1 April 2020 Presentation + Paper

Preliminary assessment on the detection of putrescine using long period fiber gratings coated with titanium dioxide and poly(ethylene-co-vinyl acetate)

Helena Vasconcelos, Jose M. M. Almeida, Cristina Saraiva, Duarte Viveiros, P. A. S. Jorge, L. Coelho

Proceedings Volume 11354, 113540B (2020) https://doi.org/10.1117/12.2555397

KEYWORDS: Refractive index, Fiber coatings, Titanium dioxide, Calibration, Signal attenuation, Liquids, Water, Polymers, Cladding, Fiber optics sensors

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Proceedings Article | 1 April 2020 Presentation

Femtosecond laser micromachining of Fabry-Perot interferometers in SMF-28 fiber for pressure sensing (Conference Presentation)

Duarte Viveiros, José M. M. Almeida, Luís Coelho, João Maia, Vítor Amorim, Helena Vasconcelos, Pedro A. Jorge, Paulo V. Marques

Proceedings Volume 11354, 113540R (2020) https://doi.org/10.1117/12.2554415

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Proceedings Article | 3 October 2019 Paper

Optimization of interrogation methods for sensors based on optical microbubble resonators

P. S. dos Santos, L. Coelho, P. A. Jorge

Proceedings Volume 11207, 112072S (2019) https://doi.org/10.1117/12.2530919

KEYWORDS: Resonators, Tunable lasers, Sensors, Laser stabilization, Laser scanners, Absorption, Laser sources, Modulation, Feedback loops

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Proceedings Article | 16 May 2017 Paper

Low temperature oxidation in air of iron thin films monitored with long period fiber gratings

L. Coelho, J. L. Santos, P. A. S. Jorge, J. M. M. de Almeida

Proceedings Volume 10231, 102310Y (2017) https://doi.org/10.1117/12.2266324

KEYWORDS: Iron, Corrosion, Signal attenuation, Metals, Fiber optics sensors, Cladding, Oxides, Agriculture, Mining, Contamination, Oxidation, Thin films, Scanning electron microscopy, Electron microscopes, Sensors

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Proceedings Article | 23 April 2017 Paper

LPFG based fiber optic sensor for magnetic field measurement

Carlos A. J. Gouveia, Luís Coelho, Marcos A. Franco

Proceedings Volume 10323, 103233P (2017) https://doi.org/10.1117/12.2265303

KEYWORDS: Cladding, Zinc oxide, Coating, Optical fibers, Sensors, Magnetism, Fiber optics sensors, Magnetic sensors, Refractive index, Thin films

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Proceedings Article | 23 April 2017 Paper

Study of corrosion using long period fiber gratings coated with iron exposed to salty water

L. Coelho, J. Santos, P. A. S. Jorge, J. M. M. de Almeida

Proceedings Volume 10323, 103234Z (2017) https://doi.org/10.1117/12.2266400

KEYWORDS: Iron, Corrosion, Sensors, Oxidation, Signal attenuation, Metals, Fiber coatings, Oxides, Sodium, Water

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SPIE Journal Paper | 18 August 2016 Open Access

Aptamer-based fiber sensor for thrombin detection

Luís Coelho, José Manuel Marques Martins de Almeida, José Luís Santos, Pedro Alberto da Silva Jorge, Maria Cristina L. Martins, Diana Viegas, Raquel Queirós

JBO, Vol. 21, Issue 08, 087005, (August 2016) https://doi.org/10.1117/12.10.1117/1.JBO.21.8.087005

KEYWORDS: Titanium dioxide, Sensors, Fiber optics sensors, Fiber Bragg gratings, Optical fibers, Signal attenuation, Proteins, Gold, Refractive index, Biosensing

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Proceedings Article | 29 April 2016 Paper

Zinc oxide coated optical fiber long period gratings for sensing of volatile organic compounds

L. Coelho, D. Viegas, J. Santos, José Manuel Marques Martins de Almeida

Proceedings Volume 9899, 989918 (2016) https://doi.org/10.1117/12.2219630

KEYWORDS: Zinc oxide, Sensors, Bioalcohols, Thin films, Zinc, Fiber optics sensors, Gas sensors, Gases, Metals, Oxides, Signal attenuation, Silicon, X-ray diffraction, Glasses, Coating

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Proceedings Article | 28 September 2015 Paper

Real time monitoring oxidation of transition metals with long period fiber gratings

L. Coelho, D. Viegas, J. Santos, J. de Almeida

Proceedings Volume 9634, 96340N (2015) https://doi.org/10.1117/12.2195199

KEYWORDS: Signal attenuation, Metals, Oxides, Transition metals, Coating, Copper, Nickel, Titanium, Zinc, Oxidation

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Proceedings Article | 28 September 2015 Paper

Phase interrogated plasmonic optical fiber optrode with bimetallic layers

H. Moayyed, I. Leite, L. Coelho, J. L. Santos, D. Viegas

Proceedings Volume 9634, 96346B (2015) https://doi.org/10.1117/12.2195090

KEYWORDS: Refractive index, Optical fibers, Plasmonics, Silver, Gold, Reflection, Sensors, Biological and chemical sensing, Sensing systems, Structural sensing

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Proceedings Article | 5 May 2015 Paper

Monitoring of high refractive index edible oils using coated long period fiber grating sensors

Luis Coelho, Diana Viegas, José Luís Campos Oliveira Santos, Jose Manuel de Almeida

Proceedings Volume 9506, 95061A (2015) https://doi.org/10.1117/12.2178811

KEYWORDS: Refractive index, Sensors, Cladding, Fiber optics sensors, Fiber coatings, Thin films, Coating, Spectrum analysis, Titanium dioxide, Oxidation

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Proceedings Article | 22 August 2014 Paper

Analysis of phase interrogated SPR fiber optic sensors with different bimetallic combinations

H. Moayyed, I. Leite, L. Coelho, J. Santos, A. Guerreiro, D. Viegas

Proceedings Volume 9286, 92864A (2014) https://doi.org/10.1117/12.2064315

KEYWORDS: Refractive index, Fiber optics sensors, Sensors, Metals, Silver, Gold, Plasmonics, Copper, Structural sensing, Aluminum

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Proceedings Article | 2 June 2014 Paper

Analysis of phase interrogation of SPR fiber optic sensors with characteristics tailored by the application of different metal-dielectric overlays

H. Moayyed, I. Leite, L. Coelho, J. Santos, A. Guerreiro, D. Viegas

Proceedings Volume 9157, 91575E (2014) https://doi.org/10.1117/12.2059768

KEYWORDS: Fiber optics sensors, Sensors, Refractive index, Oxides, Plasmonics, Silver, Optical fibers, Structural sensing, Fiber optics, Titanium dioxide

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Proceedings Article | 2 June 2014 Paper

SPR sensors in POF: a new experimental configuration for extended refractive index range and better SNR

N. Cennamo, L. Coelho, A. Guerreiro, P. A. Jorge, L. Zeni

Proceedings Volume 9157, 915759 (2014) https://doi.org/10.1117/12.2059653

KEYWORDS: Phase only filters, Sensors, Refractive index, Signal to noise ratio, Cladding, Polymer optical fibers, Optical filters, Photoresist materials, Gold, Spectrum analysis

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Proceedings Article | 3 March 2014 Paper

DNA-Aptamer optical biosensors based on a LPG-SPR optical fiber platform for point-of-care diagnostic

L. Coelho, R. Queirós, J. Santos, M. Cristina Martins, D. Viegas, P. A. Jorge

Proceedings Volume 8957, 89570K (2014) https://doi.org/10.1117/12.2040892

KEYWORDS: Sensors, Coating, Refractive index, Optical fibers, Cladding, Biosensors, Diagnostics, Proteins, Sodium, Titanium dioxide

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Proceedings Article | 18 November 2013 Paper

SPR sensing with bimetallic layers in optical fibers and phase interrogation

H. Moayyed, I. Leite, L. Coelho, J. Santos, D. Viegas

Proceedings Volume 8785, 8785FK (2013) https://doi.org/10.1117/12.2027614

KEYWORDS: Optical fibers, Sensors, Refractive index, Geometrical optics, Tapered optical fibers, Gold, Surface plasmons, Metals, Head, Interfaces

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Proceedings Article | 20 May 2013 Paper

Pressure sensor based on an all-fiber Fabry-Pérot interferometer for different gaseous environments

Susana Silva, L. Coelho, O. Frazão

Proceedings Volume 8794, 87940H (2013) https://doi.org/10.1117/12.2025394

KEYWORDS: Single mode fibers, Sensors, Silica, Interferometers, Oxygen, Environmental sensing, Refractive index, Head, Optical fibers, Nitrogen

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Proceedings Article | 20 May 2013 Paper

Sensing structure based on surface plasmonic resonance in single mode optical fibers chemically etched

L. Coelho, J. Almeida, J. Santos, R. Ferreira, P. André, D. Viegas

Proceedings Volume 8794, 87940E (2013) https://doi.org/10.1117/12.2026809

KEYWORDS: Sensors, Refractive index, Dielectrics, Cladding, Gold, Biological and chemical sensing, Optical fibers, Single mode fibers, Plasmonics, Surface plasmons

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Proceedings Article | 20 May 2013 Paper

Analysis of phase interrogation in SPR-based sensing supported by tapered optical fibres

H. Moayyed, I. Leite, L. Coelho, J. Santos, D. Viegas

Proceedings Volume 8794, 879426 (2013) https://doi.org/10.1117/12.2026824

KEYWORDS: Sensors, Plasmonics, Optical fibers, Plasmons, Refractive index, Tapered optical fibers, Head, Metals, Near field optics, Gold

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Proceedings Article | 17 October 2012 Paper

Simultaneous measurement of partial pressure of O2 and CO2 using hybrid interferometer

Paula Tafulo, L. Coelho, P. Jorge, J. Santos, Kay Schuster, Jens Kobelke, O. Frazão

Proceedings Volume 8421, 84212W (2012) https://doi.org/10.1117/12.970474

KEYWORDS: Interferometers, Carbon dioxide, Head, Sensors, Oxygen, Silica, Single mode fibers, Fabry–Perot interferometers, Refractive index, Carbon monoxide

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Proceedings Article | 17 October 2012 Paper

New spatial optical filters for gas refractometry

Susana Silva, L. Coelho, R. André, O. Frazão

Proceedings Volume 8421, 842137 (2012) https://doi.org/10.1117/12.974991

KEYWORDS: Optical filters, Bandpass filters, Head, Optical fibers, Structured optical fibers, Refractive index, Refractometry, Silica, Cladding, Nitrogen

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SPIE Journal Paper | 1 October 2011

Optical refractometer based on multimode interference in a pure silica tube

Luís Coelho, Orlando Frazão, Jens Kobelke, Kay Schuster, José Santos

OE, Vol. 50, Issue 10, 100504, (October 2011) https://doi.org/10.1117/12.10.1117/1.3646393

KEYWORDS: Silica, Refractive index, Head, Single mode fibers, Multimode fibers, Liquids, Waveguides, Sensors, Fusion splicing, Temperature metrology

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Proceedings Article | 26 July 2011 Paper

Optical fibre hydrogen sensors based on palladium coatings

L. Coelho, S. F. O. Silva, Paula Tafulo, J. Santos, O. Frazão, F. Malcata

Proceedings Volume 8001, 80013Z (2011) https://doi.org/10.1117/12.892014

KEYWORDS: Hydrogen, Palladium, Sensors, Head, Fiber Bragg gratings, Optical fibers, Fabry–Perot interferometers, Cladding, Interferometers, Fiber optics sensors

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Proceedings Article | 26 July 2011 Paper

Optical fibre pressure sensors for small scale studies of groundwater flow

L. Coelho, N. Freitas, J. Baptista, O. Frazão, J. Santos, T. Restivo, J. Marques

Proceedings Volume 8001, 80013V (2011) https://doi.org/10.1117/12.891913

KEYWORDS: Sensors, Mirrors, Optical fibers, Prototyping, Head, Reflectivity, GRIN lenses, Multiplexing, Soil science, Reflectometry

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Proceedings Article | 9 September 2010 Paper

Fibre optic remote sensing based on long period gratings with in situ optical source

D. Viegas, J. Carvalho, L. Coelho, J. Santos, L. Ferreira, F. Araújo, O. Frazão

Proceedings Volume 7653, 76532F (2010) https://doi.org/10.1117/12.866445

KEYWORDS: Sensors, Fiber Bragg gratings, Remote sensing, Head, Geometrical optics, Optical fibers, Sensing systems, Erbium, Fiber optics, In situ remote sensing

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Proceedings Article | 9 September 2010 Paper

Dynamic interrogation of long period gratings with modulated fibre Bragg gratings

J. Carvalho, L. Coelho, L. Correia, O. Frazão, P. A. S. Jorge, J. Baptista, I. Dias, J. Santos, J. Weyl, M. Pontes, M. Martinez, A. Barbero, R. Ribeiro, A. J. G. Abelém, M. T. R. Giraldi

Proceedings Volume 7653, 76532C (2010) https://doi.org/10.1117/12.866444

KEYWORDS: Fiber Bragg gratings, Modulation, Refractive index, Erbium, Head, Optical amplifiers, Raman spectroscopy, Fiber amplifiers, Electronics, Sensors

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Showing 5 of 27 publications

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