Prof. Mário Fernando S. Ferreira Profile

Prof. Mário Fernando S. Ferreira

Professor at Univ de Aveiro

SPIE Involvement:

Conference Chair | Editor | Author

Publications (50)

Proceedings Article | 28 September 2015 Paper

Acetone evaporation monitoring using a caterpillar-like microstructured fiber

A. Gomes, M. Ferreira, J. Moura, R. André, S. Silva, J. Kobelke, J. Bierlich, K. Wondraczek, K. Schuster, O. Frazão

Proceedings Volume 9634, 96342R (2015) https://doi.org/10.1117/12.2194932

KEYWORDS: Sensors, Head, Liquids, Microfluidics, Micro optical fluidics, Signal processing, Single mode fibers, Structured optical fibers, Ion beams, Signal detection

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Proceedings Article | 22 August 2014 Paper

Experimental setup for electromagnetically induced transparency observation in hollow-core fibers

Bruno Tiburcio, Gil Fernandes, Jorge Monteiro, Silvia Rodrigues, M. Inês Carvalho, Margarida Facão, Mario Ferreira, Armando Pinto

Proceedings Volume 9286, 92860H (2014) https://doi.org/10.1117/12.2063625

KEYWORDS: Transparency, Single mode fibers, Telecommunications, Fusion splicing, Absorption, Beam controllers, Electroluminescent displays, Optical fibers, Molecules, Geometrical optics

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Proceedings Article | 18 November 2013 Paper

Design and characterization of a plastic optical fiber pH sensor

Licínio Ferreira, Pedro Simões, Rui Carvalho, Paulo Lopes, Mário Ferreira

Proceedings Volume 8785, 8785FA (2013) https://doi.org/10.1117/12.2027505

KEYWORDS: Sensors, Phase only filters, Photodiodes, Polymer optical fibers, Sol-gels, Molecules, Optical fibers, Light emitting diodes, Silica, Visible radiation

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Proceedings Article | 18 November 2013 Paper

Pump and filtering optimization in Mamyshev regenerator

Andis Supe, Gil Fernandes, Nelson Muga, Armando Pinto, Mario F. Ferreira

Proceedings Volume 8785, 8785CI (2013) https://doi.org/10.1117/12.2026288

KEYWORDS: Optical filters, Electronic filtering, Tunable filters, Signal to noise ratio, Interference (communication), Scanning probe microscopy, Nonlinear filtering, Optical amplifiers, Signal attenuation, Nonlinear optics

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Proceedings Article | 18 November 2013 Paper

Design of microstructured optical fibers for supercontinuum generation

Silvia Rodrigues, Margarida Facão, Sofia Latas, Mário F. Ferreira

Proceedings Volume 8785, 87854H (2013) https://doi.org/10.1117/12.2026189

KEYWORDS: Optical fibers, Supercontinuum generation, Micro optical fluidics, Structured optical fibers, Dispersion, Optical design, Cladding, Silica, Solitons, Nonlinear optics

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Proceedings Article | 18 November 2013 Paper

Experimental characterization of a highlly nonlinear fiber

Andis Supe, Gil Fernandes, Nelson Muga, Armando Pinto, Mário Ferreira

Proceedings Volume 8785, 87854D (2013) https://doi.org/10.1117/12.2026182

KEYWORDS: Raman spectroscopy, Raman scattering, Terahertz radiation, Optical amplifiers, Polarization, Scattering, Fiber amplifiers, Four wave mixing, Nonlinear optics, Optical fibers

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Proceedings Article | 16 May 2012 Paper

Propagation of pulsating, erupting, and creeping solitons in the presence of higher order effects

Sofia C. Latas, Mário F. Ferreira

Proceedings Volume 8434, 84340L (2012) https://doi.org/10.1117/12.922065

KEYWORDS: Solitons, Solids, Raman scattering, Nonlinear optics, Nonlinear filtering, Composites, Complex systems, Laser systems engineering, Numerical simulations, Optical filters

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Proceedings Article | 11 May 2012 Paper

Continuous wave supercontinuum generation aided by a weaker pulse laser

G. Fernandes, M. Facão, M. Carvalho, S. Rodrigues, J. Heidarialamdarloo, A. Pinto, M. Ferreira

Proceedings Volume 8434, 843413 (2012) https://doi.org/10.1117/12.922715

KEYWORDS: Fiber lasers, Continuous wave operation, Dispersion, Raman spectroscopy, Picosecond phenomena, Supercontinuum generation, Solitons, Optical fibers, Pulsed laser operation

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Proceedings Article | 26 July 2011 Paper

Optimization of polarization control schemes for QKD systems

Nelson Muga, Álvaro Almeida, Mário F. Ferreira, Armando Pinto

Proceedings Volume 8001, 80013N (2011) https://doi.org/10.1117/12.892221

KEYWORDS: Photons, Polarization control, Polarization, Quantum key distribution, Sensors, Control systems, Time division multiplexing, Wavelength division multiplexing, Systems modeling, Single photon detectors

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Proceedings Article | 26 July 2011 Paper

Modelling of tapered and microstructured fibers

S. R. Carneiro, M. V. Facão, S. C. Latas, M. Ferreira

Proceedings Volume 8001, 80014J (2011) https://doi.org/10.1117/12.892247

KEYWORDS: Optical fibers, Dispersion, Finite element methods, Silica, Cladding, Wave propagation, Radio propagation, Optical properties, Refractive index, Modeling

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Proceedings Article | 18 February 2010 Paper

Dynamics of ultrashort pulse solutions of the complex Ginzburg-Landau equation

Sofia C. Latas, Mário F. Ferreira, Margarida Facão

Proceedings Volume 7582, 758217 (2010) https://doi.org/10.1117/12.841634

KEYWORDS: Solitons, Solids, Holographic optical elements, Raman scattering, Numerical simulations, Ultrafast phenomena, Complex systems, Laser systems engineering, Optical filters, Nonlinear filtering

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Proceedings Article | 18 February 2010 Paper

Bound states of dissipative solitons in optical fiber systems

Sofia C. Latas, Mário F. Ferreira

Proceedings Volume 7582, 75820P (2010) https://doi.org/10.1117/12.841644

KEYWORDS: Solitons, Nonlinear filtering, Raman scattering, Optical filters, Linear filtering, Optical fibers, Surface plasmons, Nonlinear optics, Numerical simulations, Complex systems

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Proceedings Article | 3 April 2008 Paper

Nonlinear effects in optical fibers: limitations and benefits

Mário F. S. Ferreira

Proceedings Volume 6793, 679302 (2008) https://doi.org/10.1117/12.798948

KEYWORDS: Raman scattering, Nonlinear optics, Dispersion, Optical fibers, Refractive index, Scattering, Acoustics, Raman spectroscopy, Modulation, Scanning probe microscopy

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Proceedings Article | 8 May 2007 Paper

Perturbation theory of dispersion-managed fiber solitons

Mário Ferreira, Mayra Sousa

Proceedings Volume 6582, 658212 (2007) https://doi.org/10.1117/12.722898

KEYWORDS: Solitons, Dispersion, Optical amplifiers, Modulation, Fiber amplifiers, Complex systems, Nonlinear optics, Telecommunications, Signal to noise ratio, Birefringence

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Proceedings Article | 24 May 2006 Paper

Evaluation of higher order PMD effects using Jones matrix analytical models: a comparative study

M. Ferreira

Proceedings Volume 6193, 619308 (2006) https://doi.org/10.1117/12.662776

KEYWORDS: Optical fibers, Polarization, Statistical modeling, Statistical analysis, Systems modeling, Birefringence, Differential equations, Optical communications, Telecommunications, Matrices

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Proceedings Article | 20 April 2006 Paper

Variational approach to dispersion-managed solitons

M. Ferreira, M. Sousa

Proceedings Volume 6183, 61830C (2006) https://doi.org/10.1117/12.662870

KEYWORDS: Solitons, Optical fibers, Dispersion, Polarization, Telecommunications, Nonlinear optics, Complex systems, Optical communications, Optical amplifiers, Modulation

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Proceedings Article | 28 February 2006 Paper

Timing jitter in dispersion-managed soliton transmission systems

Mário Ferreira, Mayra Sousa

Proceedings Volume 6115, 61152I (2006) https://doi.org/10.1117/12.646289

KEYWORDS: Solitons, Modulators, Optical filters, Chemical elements, Modulation, Amplifiers, Linear filtering, Nonlinear filtering, Telecommunications, Optical communications

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Proceedings Article | 1 October 2005 Paper

Theory of dispersion-managed optical solitons

M. Sousa, M. Ferreira

Proceedings Volume 5971, 59710Q (2005) https://doi.org/10.1117/12.628278

KEYWORDS: Solitons, Dispersion, Optical solitons, Signal to noise ratio, Telecommunications, Optical amplifiers, Optical communications, Complex systems, Nonlinear optics, Data transmission

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Proceedings Article | 21 October 2004 Paper

Analytic description of dispersion-managed fiber systems

M. de Sousa, Mario Ferreira, E. Marti-Panameno

Proceedings Volume 5622, (2004) https://doi.org/10.1117/12.591612

KEYWORDS: Solitons, Dispersion, Ordinary differential equations, Telecommunications, Optical amplifiers, Complex systems, Multiplexing, Laser optics, Phase shifts, Physics

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Proceedings Article | 21 October 2004 Paper

A simplified averaging method for finding the true dispersion-managed solution

M. H. de Sousa, Mario Ferreira, E. Marti-Panameno

Proceedings Volume 5622, (2004) https://doi.org/10.1117/12.590935

KEYWORDS: Algorithm development, Solitons, Optical fibers, Dispersion, Telecommunications, Gaussian pulse, Iterative methods, Laser optics, Nonlinear optics, Physics

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Proceedings Article | 17 February 2003 Paper

Bound states of plain and composite pulses in optical transmission lines and fiber lasers

Mario Ferreira, Sofia Latas

Proceedings Volume 4833, (2003) https://doi.org/10.1117/12.474291

KEYWORDS: Solitons, Composites, Dynamical systems, Transmittance, Fiber lasers, Nonlinear filtering, Optical amplifiers, Optical filters, Nonlinear optics, Mode locking

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Proceedings Article | 17 February 2003 Paper

Transmission control of dispersion-managed solitons

Mario Ferreira, Mayra de Sousa

Proceedings Volume 4833, (2003) https://doi.org/10.1117/12.474366

KEYWORDS: Solitons, Modulators, Dispersion, Modulation, Amplifiers, Optical filters, Complex systems, Polonium, Optical communications, Control systems

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SPIE Journal Paper | 1 July 2002

Soliton stability and compression in a system with nonlinear gain

Mario Ferreira, Sofia Latas

OE, Vol. 41, Issue 07, (July 2002) https://doi.org/10.1117/12.10.1117/1.1480428

KEYWORDS: Solitons, Nonlinear filtering, Optical filters, Complex systems, Linear filtering, Wave propagation, Dispersion, Optical communications, Telecommunications, Nonlinear optics

Proceedings Article | 17 October 2001 Paper

Dispersion-managed solitons with average normal dispersion

Mayra de Sousa, Mario Ferreira

Proceedings Volume 4581, (2001) https://doi.org/10.1117/12.445029

KEYWORDS: Solitons, Optical fibers, Dispersion, Radio propagation, Chemical elements, Optical communications, Telecommunications, Wave propagation, Multiplexing, Wavelength division multiplexing

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Proceedings Article | 12 April 2001 Paper

Design and optimization of dispersion-managed soliton communication systems

Mayra de Sousa, Mario Ferreira

Proceedings Volume 4271, (2001) https://doi.org/10.1117/12.424701

KEYWORDS: Solitons, Optical fibers, Dispersion, Telecommunications, Nonlinear optics, Optical amplifiers, Radio propagation, Differential equations, Numerical simulations, Optical communications

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Proceedings Article | 12 April 2001 Paper

Interaction and bound states of pulses in the Ginzburg-Landau equations

Mario Ferreira, Sofia Latas

Proceedings Volume 4271, (2001) https://doi.org/10.1117/12.424704

KEYWORDS: Solitons, Nonlinear filtering, Optical filters, Linear filtering, Optical amplifiers, Nonlinear optics, Numerical simulations, Complex systems, Bandpass filters, Dynamical systems

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Proceedings Article | 19 October 2000 Paper

Spatial photorefractive solitons: properties and potential applications

Mario Ferreira

Proceedings Volume 4110, (2000) https://doi.org/10.1117/12.404808

KEYWORDS: Solitons, Waveguides, Refractive index, Spatial solitons, Crystals, Nonlinear optics, Electro optics, Electrons, Near field optics, Beam propagation method

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Proceedings Article | 14 July 2000 Paper

Stability and compression of bandwidth-limited amplified fiber solitons

Sofia Latas, Mario Ferreira

Proceedings Volume 3944, (2000) https://doi.org/10.1117/12.391485

KEYWORDS: Solitons, Wave propagation, Optical filters, Nonlinear filtering, Nonlinear optics, Fiber amplifiers, Complex systems, Linear filtering, Physics, Absorption filters

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Proceedings Article | 14 April 2000 Paper

Soliton transmission control in a system with up- and down-sliding filters

Mario Ferreira, Sofia Latas, Margarida Facao

Proceedings Volume 3927, (2000) https://doi.org/10.1117/12.382080

KEYWORDS: Solitons, Control systems, Nonlinear filtering, Optical filters, Amplifiers, Optical amplifiers, Optical fibers, Modulation, Nonlinear optics, Complex systems

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Proceedings Article | 9 November 1999 Paper

Soliton stability and compression in a system with nonlinear gain

Sofia Latas, Mario Ferreira

Proceedings Volume 3899, (1999) https://doi.org/10.1117/12.369426

KEYWORDS: Solitons, Complex systems, Wave propagation, Nonlinear filtering, Optical filters, Linear filtering, Nonlinear optics, Physics, Optical communications, Telecommunications

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Proceedings Article | 5 October 1999 Paper

Design constraints of high-bit-rate soliton communication systems

Mario Ferreira

Proceedings Volume 3779, (1999) https://doi.org/10.1117/12.368211

KEYWORDS: Solitons, Optical amplifiers, Telecommunications, Dispersion, Fiber amplifiers, Amplifiers, Raman scattering, Optical proximity correction, Acoustics, Phase conjugation

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Proceedings Article | 19 July 1999 Paper

Design aspects of soliton communication systems

Mario Ferreira

Proceedings Volume 3749, (1999) https://doi.org/10.1117/12.355057

KEYWORDS: Solitons, Telecommunications, Optical amplifiers, Fiber amplifiers, Dispersion, Phase conjugation, Optical communications, Modulation, Optical proximity correction, Raman spectroscopy

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Proceedings Article | 6 July 1999 Paper

Optical communication groups at University of Aveiro and Institute of Telecommunications--Aveiro pole

Jose da Rocha, Pedro Tavares, Orlando Frazao, Paulo Monteiro, Paulo Andre, Antonio Teixeira, M. Lima, Armando Pinto, Atilio Gameiro, R. Ribeiro, L. Ribeiro, Antonio Cunha, Joao Pinto, Mario Ferreira, M. Pousa

Proceedings Volume 3572, (1999) https://doi.org/10.1117/12.358435

KEYWORDS: Solitons, Optical filters, Receivers, Clocks, Optical amplifiers, Optical communications, Telecommunications, Modulation, Dispersion, Wavelength division multiplexing

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Proceedings Article | 6 August 1998 Paper

Limitations on the design of high-bit-rate soliton communication systems

Mario Ferreira, Atilio Gameiro

Proceedings Volume 3552, (1998) https://doi.org/10.1117/12.318052

KEYWORDS: Solitons, Optical amplifiers, Fiber amplifiers, Telecommunications, Dispersion, Amplifiers, Signal to noise ratio, Optical proximity correction, Phase conjugation, Modulation

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Proceedings Article | 31 July 1998 Paper

Soliton propagation and stability in a system with nonlinear amplifiers

Mario Ferreira, Margarida Facao

Proceedings Volume 3384, (1998) https://doi.org/10.1117/12.317652

KEYWORDS: Solitons, Optical filters, Nonlinear filtering, Complex systems, Nonlinear optics, Linear filtering, Optical amplifiers, Fiber amplifiers, Amplifiers, Wave propagation

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Proceedings Article | 19 May 1998 Paper

Timing jitter of ultrashort optical solitons

Mario Ferreira, Margarida Facao

Proceedings Volume 3263, (1998) https://doi.org/10.1117/12.308360

KEYWORDS: Solitons, Dispersion, Optical fibers, Amplifiers, Optical amplifiers, Picosecond phenomena, Raman scattering, Fiber amplifiers, Raman spectroscopy, Optical solitons

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Proceedings Article | 1 April 1998 Paper

Timing jitter in soliton transmission with up- and down-sliding-frequency-guiding filters

Mario Ferreira, Atilio Gameiro

Proceedings Volume 3402, (1998) https://doi.org/10.1117/12.304943

KEYWORDS: Solitons, Optical amplifiers, Francium, Nonlinear filtering, Modulation, Amplifiers, Optical solitons, Nonlinear optics, Optical fibers, Diffusion

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Proceedings Article | 6 June 1997 Paper

Analysis of soliton stability and interactions in a system with nonlinear gain

Mario Ferreira

Proceedings Volume 2994, (1997) https://doi.org/10.1117/12.275581

KEYWORDS: Solitons, Nonlinear filtering, Linear filtering, Complex systems, Optical filters, Optical amplifiers, Bandpass filters, Polarization, Amplifiers, Superposition

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Proceedings Article | 30 January 1997 Paper

Stability conditions for soliton fiber lasers with nonlinear gain

Mario Ferreira

Proceedings Volume 2918, (1997) https://doi.org/10.1117/12.265373

KEYWORDS: Solitons, Fiber lasers, Mode locking, Dispersion, Absorption, Linear filtering, Optical filters, Fiber optic communications, Optical communications, Pulsed laser operation

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Proceedings Article | 13 December 1996 Paper

Solitary pulses in a system with two-photon absorption and nonlinear gain

Mario Ferreira

Proceedings Volume 2953, (1996) https://doi.org/10.1117/12.261232

KEYWORDS: Solitons, Optical filters, Nonlinear filtering, Absorption, Linear filtering, Complex systems, Absorption filters, Fiber amplifiers, Optical amplifiers, Nonlinear optics

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Proceedings Article | 20 November 1996 Paper

Subpicosecond-femtosecond optical soliton transmission characteristics in an ultralong active fiber

Mario Ferreira, Margarida Facao

Proceedings Volume 2841, (1996) https://doi.org/10.1117/12.258968

KEYWORDS: Solitons, Optical solitons, Nonlinear filtering, Nonlinear optics, Fiber amplifiers, Optical amplifiers, Fiber optic communications, Optical fibers, Linear filtering, Femtosecond phenomena

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Proceedings Article | 1 September 1996 Paper

Soliton propagation in a system with bandwidth-limited and nonlinear gain

Mário F. S. Ferreira

Proceedings Volume 2778, 277837 (1996) https://doi.org/10.1117/12.2298997

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Proceedings Article | 1 April 1996 Paper

Small-signal response of a lamba/4-shifted MQW DFB laser as a three-level system

Alberto de Deus Sarmento, Mario Ferreira

Proceedings Volume 2684, (1996) https://doi.org/10.1117/12.236943

KEYWORDS: Modulation, Sodium, Semiconductor lasers, Electroluminescence, Quantum wells, Optical communications, Telecommunications, Waveguides, Light sources, Laser damage threshold

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Proceedings Article | 5 February 1996 Paper

Design optimization of tunable multi-electrode DBR lasers

Mario Ferreira

Proceedings Volume 2730, (1996) https://doi.org/10.1117/12.231072

KEYWORDS: Frequency modulation, Fermium, Modulation, Tunable lasers, Frequency shift keying, Thermal effects, Waveguides, Refractive index, Transmitters, Phase shift keying

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Proceedings Article | 27 December 1995 Paper

Stimulated Brillouin scattering in active optical fibers: implications for uni and bidirectional transmission systems

Mario Ferreira

Proceedings Volume 2613, (1995) https://doi.org/10.1117/12.228868

KEYWORDS: Optical fibers, Scattering, Fiber amplifiers, Optical amplifiers, Signal attenuation, Nonlinear optics, Interference (communication), Optical communications, Light scattering, Nonlinear dynamics

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Proceedings Article | 19 June 1995 Paper

Dynamic response of a multiple quantum well laser as a three-level system

Alberto de Deus Sarmento, Mario Ferreira

Proceedings Volume 2399, (1995) https://doi.org/10.1117/12.212500

KEYWORDS: Sodium, Modulation, Quantum wells, Electroluminescence, Electron holes, Semiconductor lasers, Physics, Waveguides, Reflectivity, Mirrors

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Proceedings Article | 17 February 1995 Paper

Cost effective FITL technologies for small business and residential customers

Niels Andersen, Peter Woolnough, Juergen Seidenberg, Mario Ferreira

Proceedings Volume 2450, (1995) https://doi.org/10.1117/12.201288

KEYWORDS: Video, Modulation, Optical amplifiers, Optical networks, Analog electronics, Transmitters, Fiber amplifiers, Signal to noise ratio, Copper, Optics manufacturing

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FIRST is a RACE project where 5 main European telecoms operators, 4 equipment manufacturers and one university have joined up to define and test in a field trial in Portugal a cost effective Optical Access Network. The main design target has been a system which gives cost effective provision of wideband services for small and medium business customers. The system however, incorporates provision of telephone, ISDN and analog and digital video for residential customers as well. Technologies have been chosen with the objective of providing a simple, robust and flexible system where initial deployment costs are low and closely related to the service take up. The paper describes the main technical features of the system and network applications which shows how the system may be introduced in network planning. The system is based on Passive Optical Network technology where video is distributed in the 1550 nm window and telecoms services transmitted at 1300 nm in full duplex mode. The telecoms system provides high capacity, flexibility in loop length and robustness towards outside plant performance. The Subcarrier Multiple Access (SCMA) method is used for upstream transmission of bi-directional telecoms services. SCMA has advantages compared to the Time Division Multiple Access technology used in other systems. Bandwidth/cost tradeoff is better and the lower requirements to the outside plant increases the overall cost benefit. Optical beat noise due to overlapping of laser spectra which may be a problem for this technology has been addressed with success through the use of a suitable modulation and control technique. This technology is further validated in the field trial. The video system provides cost effective long distance transmission on standard fiber with externally modulated lasers and cascaded amplifiers. Coexistence of analog and digital video on one fiber with different modulation schemes i.e. BPSK, QPSK and 64 QAM have been validated. Total life cycle cost evaluations based on availability data, maintenance requirements and expectations for service development have been made. The field trial will be running for two years.

Proceedings Article | 2 May 1994 Paper

Lasing characteristics of tunable four-section distributed-Bragg reflector lasers

Mario Ferreira, Jose da Rocha, Joao Pinto

Proceedings Volume 2150, (1994) https://doi.org/10.1117/12.174979

KEYWORDS: Frequency modulation, Fermium, Modulation, Tunable lasers, Reflectors, Refractive index, Waveguides, Absorption, Wavelength tuning, Laser resonators

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Proceedings Article | 1 February 1992 Paper

Noise and chirp of tunable multisection DBR lasers

Mario Ferreira, Jose Rocha, Joao Pinto

Proceedings Volume 1580, (1992) https://doi.org/10.1117/12.135384

KEYWORDS: Tunable lasers, Modulation, Fiber optic components, Semiconductor lasers, Reflectivity, Coherent optics, Semiconductors, Laser sources, Telecommunications, Refractive index

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