Mr. Paulo Jorge Passos Sério Lourenço Profile

Paulo Jorge Passos Sério Lourenço

Research Associate at NOVA School of Science and Technology

SPIE Involvement:

Author

Publications (19)

Proceedings Article | 13 March 2024 Poster + Paper

Traffic signals and cooperative trajectories at urban intersections: leveraging visible light communication for implementation

G. Galvão, M. Vieira, P. Vieira, P. Louro, M. Vestias, P. Lourenço

Proceedings Volume 12906, 129060O (2024) https://doi.org/10.1117/12.3000529

KEYWORDS: Visible light communication, Roads, Safety, Telecommunications, Transmitters, Receivers, Education and training, Control systems, Multiplexers, Light emitting diodes

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Proceedings Article | 13 March 2024 Poster + Paper

Leveraging visible light communication for enhanced indoor wayfinding in unfamiliar buildings

P. Louro, M. Vieira, P. Vieira, A. Fantoni, P. Lourenço

Proceedings Volume 12906, 129060N (2024) https://doi.org/10.1117/12.3000462

KEYWORDS: Visible light communication, Buildings, Receivers, Telecommunications, Transmitters, Calibration, Data transmission, Light emitting diodes, Light sources and illumination

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Proceedings Article | 11 March 2024 Presentation + Paper

Multimode interference reflectors and output tuning using neural networks

P. Lourenço, M. Véstias, A. Fantoni, M. Vieira

Proceedings Volume 12880, 128800K (2024) https://doi.org/10.1117/12.3001779

KEYWORDS: Simulations, Waveguides, Refractive index, Gallium nitride, Matrices, Reflectors, Education and training, Design, Neural networks, Reflection

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Proceedings Article | 11 March 2024 Presentation + Paper

Amorphous silicon grating couplers based on random and quadratic variation of the refractive index

Daniel Almeida, Marco De'Rossi, Paulo Lourenço, Alessandro Fantoni, João Costa, Manuela Vieira

Proceedings Volume 12880, 128800J (2024) https://doi.org/10.1117/12.3002858

KEYWORDS: Refractive index, Optical gratings, Waveguides, Design, Optical fibers, Diffraction gratings, Amorphous silicon, Silicon, Lithography, Simulations

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Proceedings Article | 10 March 2023 Presentation + Paper

Amorphous silicon photonic optical phased array for beam steering

A. Fantoni, P. Lourenço, J. Costa, M. Vieira

Proceedings Volume 12415, 124150G (2023) https://doi.org/10.1117/12.2649224

KEYWORDS: Waveguides, Phased array optics, Beam steering, Amorphous silicon, Photonic integrated circuits, Silicon photonics, Semiconductors, LIDAR, Finite-difference time-domain method, Beam divergence

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Proceedings Article | 4 March 2022 Presentation + Paper

Metamaterials in waveguide to fiber couplers

Paulo Lourenço, Alessandro Fantoni, João Costa, Miguel Fernandes, Manuela Vieira

Proceedings Volume 11995, 1199509 (2022) https://doi.org/10.1117/12.2610335

KEYWORDS: Waveguides, Refractive index, Wave propagation, Metamaterials, GRIN lenses, Optical fibers, Diffraction gratings, Structural design, Photonic crystals, Modulation

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Proceedings Article | 2 March 2022 Poster + Paper

Multichannel detector system for surface plasmon resonance biosensors

Miguel Fernandes, Alessandro Fantoni, Paulo Soares, Paulo Lourenço, Manuela Vieira

Proceedings Volume 11953, 119530J (2022) https://doi.org/10.1117/12.2610194

KEYWORDS: Sensors, Image sensors, Surface plasmons, Analog electronics, Indium gallium arsenide, Biosensors, Video, Charge-coupled devices, Waveguides

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Proceedings Article | 2 March 2022 Poster + Presentation + Paper

Colour and image processing for output extraction of a LSPR sensor

Rima Mansour, Vladan Stojkovic, Yuri Vygranenko, Paulo Lourenço, Rui Jusus, Alessandro Fantoni

Proceedings Volume 11950, 119500B (2022) https://doi.org/10.1117/12.2607463

KEYWORDS: Plasmonic sensors, Image segmentation, RGB color model, Sensors, Image processing, Refractive index, Color difference, Image processing algorithms and systems, Image sensors, Water

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Proceedings Article | 5 March 2021 Presentation + Paper

Performance of an a-Si:H MMI multichannel beam splitter analyzed by computer simulation

João Costa, Daniel Almeida, Alessandro Fantoni, Paulo Lourenço, Miguel Fernandes, Manuela Vieira

Proceedings Volume 11691, 1169106 (2021) https://doi.org/10.1117/12.2583028

KEYWORDS: Brain-machine interfaces, Waveguides, Computer simulations, Beam splitters, Beam analyzers, Beam propagation method, Point-of-care devices, Photomasks, Multimode interference devices, Lithography

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Proceedings Article | 5 March 2021 Presentation + Paper

Design and optimization of a waveguide/fibre coupler in the visible range

Paulo Lourenço, Alessandro Fantoni, João Costa, Miguel Fernandes, Manuela Vieira

Proceedings Volume 11680, 1168019 (2021) https://doi.org/10.1117/12.2582938

KEYWORDS: Waveguides, Wave propagation, Visible radiation, Radio propagation, Optical fibers, Diffraction gratings, Beam propagation method, Waveguide modes, Structured optical fibers, Structural engineering

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Proceedings Article | 13 April 2020 Presentation + Paper

Optimisation of a plasmonic parallel waveguide sensor based on amorphous silicon compounds

João Costa, Alessandro Fantoni, Paulo Lourenço, Manuela Vieira

Proceedings Volume 11354, 113542K (2020) https://doi.org/10.1117/12.2555842

KEYWORDS: Plasmonic sensors, Waveguides, Interferometers, Amorphous silicon

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Proceedings Article | 2 April 2020 Presentation + Paper

Silicon nitride based devices: lithographic mask roughness mitigation

Paulo Lourenço, Alessandro Fantoni, João Costa, Manuela Vieira

Proceedings Volume 11364, 113641Q (2020) https://doi.org/10.1117/12.2555564

KEYWORDS: Waveguides, Graphene, Lithography, Silicon, Wave propagation, Refractive index, Multimode interference devices, Optical simulations

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Proceedings Article | 2 March 2020 Paper

Simulation of a parallel waveguide array structure suitable for interrogation scheme in a plasmonic biosensor

João Costa, Alessandro Fantoni, Paulo Lourenço, Manuela Vieira

Proceedings Volume 11274, 112742B (2020) https://doi.org/10.1117/12.2546178

KEYWORDS: Waveguides, Interferometers, Refractive index, Wave propagation, Sensors, Plasmons, Interfaces, Plasmonics, Gold

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Proceedings Article | 2 March 2020 Presentation + Paper

Surface plasmon resonance sensing structure

Paulo Lourenço, Alessandro Fantoni, Paula Louro, João Costa, Manuela Vieira

Proceedings Volume 11274, 1127415 (2020) https://doi.org/10.1117/12.2546231

KEYWORDS: Refractive index, Metals, Sensors, Surface plasmons, Aluminum, Waveguides, Structural sensing, Gold, Silver, Interfaces

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Proceedings Article | 3 October 2019 Paper

Simulation analysis of a thin film semiconductor MMI 3dB splitter operating in the visible range

Paulo Lourenço, Alessandro Fantoni, Manuela Vieira

Proceedings Volume 11207, 112070J (2019) https://doi.org/10.1117/12.2526656

KEYWORDS: Brain-machine interfaces, Multimode interference devices, Waveguides, Tolerancing, Manufacturing, Refractive index, Wave propagation, Lithography, Thin films, Semiconductors

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SPIE Journal Paper | 20 July 2018

Finite-difference time-domain analysis of hydrogenated amorphous silicon and aluminum surface plasmon waveguides

Paulo Lourenço, Alessandro Fantoni, Miguel Fernandes, Yuri Vygranenko, Manuela Vieira

OE, Vol. 57, Issue 07, 077103, (July 2018) https://doi.org/10.1117/12.10.1117/1.OE.57.7.077103

KEYWORDS: Silver, Aluminum, Gold, Metals, Sensors, Refractive index, Surface plasmons, Waveguides, Finite-difference time-domain method, Structural sensing

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Proceedings Article | 23 February 2018 Paper

FDTD analysis of Aluminum/a-Si:H surface plasmon waveguides

Paulo Lourenço, Alessandro Fantoni, Miguel Fernandes, Yuri Vygranenko, Manuela Vieira

Proceedings Volume 10526, 105262D (2018) https://doi.org/10.1117/12.2290721

KEYWORDS: Gold, Silver, Sensors, Metals, Refractive index, Aluminum, Waveguides, Surface plasmons, Finite-difference time-domain method, Photonics

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Proceedings Article | 22 August 2017 Paper

Electromagnetic simulation of amorphous silicon waveguides

Paulo Lourenço, Alessandro Fantoni, Pedro Pinho

Proceedings Volume 10453, 104530Z (2017) https://doi.org/10.1117/12.2272000

KEYWORDS: Waveguides, Amorphous silicon, Finite-difference time-domain method, Transmittance, Silicon photonics, Integrated optics, Integrated circuits, Optical interconnects, Clocks, Refractive index

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Proceedings Article | 17 May 2017 Presentation + Paper

FDTD simulation of amorphous silicon waveguides for microphotonics applications

A. Fantoni, P. Lourenço, P. Pinho, M, Vieira

Proceedings Volume 10242, 102420U (2017) https://doi.org/10.1117/12.2265571

KEYWORDS: Cladding, Solar cells, Near infrared, Thermal modeling, Waveguides, Amorphous silicon, Refractive index, Finite-difference time-domain method, Absorption, Signal attenuation, Photonic integrated circuits, Plasma enhanced chemical vapor deposition

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Showing 5 of 19 publications

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