Mr. Ricardo X. Ferreira Profile

Ricardo X. Ferreira

at Univ. de Aveiro

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Author

Publications (7)

Proceedings Article | 22 August 2014 Paper

Clock and carrier recovery in high-speed coherent optical communication systems

Sofia Amado, Ricardo Ferreira, Pedro Costa, Fernando Guiomar, Somayeh Ziaie, António Teixeira, Nelson Muga, Armando Pinto

Proceedings Volume 9286, 92864M (2014) https://doi.org/10.1117/12.2063761

KEYWORDS: Clocks, Error analysis, Digital signal processing, Phase shift keying, Field programmable gate arrays, Receivers, Telecommunications, Statistical analysis, Optical communications, Signal detection

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Proceedings Article | 22 August 2014 Paper

Free space optical communications for ultra high-capacity PON system

Ali Shahpari, Artur Sousa, Ricardo Ferreira, Mário Lima, António Teixeira

Proceedings Volume 9286, 92861Y (2014) https://doi.org/10.1117/12.2063776

KEYWORDS: Free space optics, Orthogonal frequency division multiplexing, Modulation, Receivers, Mirrors, Free space optical communications, Telecommunications, Nyquist pulse, Channel projecting optics, Free space

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Proceedings Article | 22 August 2014 Paper

Use of laser speckle and entropy computation to segment images of diffuse objects with longitudinal motion

Pedro Vaz, Diana Capela, Tânia Pereira, Carlos Correia, Requicha Ferreira, Anne Humeau-Heurtier, João Cardoso

Proceedings Volume 9286, 92861H (2014) https://doi.org/10.1117/12.2060845

KEYWORDS: Image segmentation, Speckle, Video, Speckle pattern, Binary data, Silicon, Data processing, Detection and tracking algorithms, Image processing, Cameras

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Proceedings Article | 22 August 2014 Paper

Photonic integrated transmitter and receiver for NG-PON2

Ana Tavares, Ana Lopes, Cláudio Rodrigues, Paulo Mãocheia, Tiago Mendes, Simão Brandão, Francisco Rodrigues, Ricardo Ferreira, António Teixeira

Proceedings Volume 9286, 928605 (2014) https://doi.org/10.1117/12.2064174

KEYWORDS: Receivers, Transmitters, Photonic integrated circuits, Laser resonators, Optical amplifiers, Reflectors, Passive optical networks, Optical filters, Video, Integrated optics

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Proceedings Article | 2 June 2014 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 | 18 November 2013 Paper

Optical fibre monitoring of Madeira wine estufagem process

C. Novo, L. Bilro, R. Ferreira, N. Alberto, P. Antunes, R. Nogueira, J. Pinto

Proceedings Volume 8785, 8785EX (2013) https://doi.org/10.1117/12.2025397

KEYWORDS: Sensors, Optical fibers, Phase only filters, Absorbance, Neodymium, Optical sensing, Liquids, Absorption, Infrared radiation, Data acquisition

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Proceedings Article | 20 May 2013 Paper

Plastic optical fibre sensor for quality control in food industry

C. Novo, L. Bilro, R. Ferreira, N. Alberto, P. Antunes, C. Leitão, R. Nogueira, J. Pinto

Proceedings Volume 8794, 879411 (2013) https://doi.org/10.1117/12.2025489

KEYWORDS: Sensors, Refractive index, Optical fibers, Bioalcohols, Water, Liquids, Infrared radiation, Light emitting diodes, Absorption, Control systems

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Showing 5 of 7 publications

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