Dr. Maria J. Pontes Profile

Dr. Maria J. Pontes

at Univ Federal do Espirito Santo

SPIE Involvement:

Author

Publications (28)

Proceedings Article | 1 April 2020 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 | 28 August 2019 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 | 27 February 2019 Paper

Temperature cross-sensitivity compensation in liquid level sensor using Mach-Zehnder interferometers

Camilo A. Díaz, Arnaldo Leal, Anselmo Frizera, Maria Pontes, Paulo F. Antunes, Paulo S. André, Moisés R. Ribeiro

Proceedings Volume 10914, 1091425 (2019) https://doi.org/10.1117/12.2507065

KEYWORDS: Liquids, Sensors, Optical fibers, Temperature metrology, Mach-Zehnder interferometers, Fiber optics sensors, Sensor performance, Single mode fibers, Interferometers

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Proceedings Article | 22 February 2018 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 | 23 April 2017 Paper

Hysteresis compensation technique for POF curvature sensors

Arnaldo Leal, Anselmo Frizera, Maria José Pontes

Proceedings Volume 10323, 103232U (2017) https://doi.org/10.1117/12.2263528

KEYWORDS: Sensors, Phase only filters, Polymer optical fibers, Glasses, Optical fibers, Polymers, Calibration, Prototyping, Light sources, Photodiodes

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SPIE Journal Paper | 8 August 2016

Performance analysis and comparison of multipump Raman and hybrid erbium-doped fiber amplifier + Raman amplifiers using nondominated sorting genetic algorithm optimization

Helder de O. Rocha, Matheus O. Benincá, Carlos E. Castellani, Maria Pontes, Marcelo E. Segatto, Jair A. Silva

OE, Vol. 55, Issue 08, 086103, (August 2016) https://doi.org/10.1117/12.10.1117/1.OE.55.8.086103

KEYWORDS: Optical amplifiers, Raman spectroscopy, Fiber amplifiers, Single mode fibers, Optimization (mathematics), Wavelength division multiplexing, Genetic algorithms, Signal attenuation, Neptunium, Signal to noise ratio

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Proceedings Article | 28 September 2015 Paper

Unobtrusive heart rate monitor based on a fiber specklegram sensor and a single-board computer

Alessandro Benevides, Anselmo Frizera, Anibal Cotrina, Moisés Ribeiro, Marcelo Segatto, Maria José Pontes

Proceedings Volume 9634, 963468 (2015) https://doi.org/10.1117/12.2194618

KEYWORDS: Heart, Beam propagation method, Speckle, Sensors, Polymer optical fibers, Fiber optics sensors, Image acquisition, Cameras, Geometrical optics, Oximeters

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Proceedings Article | 28 September 2015 Paper

A new optical pressure sensor interrogated by speckles pattern for oil industry

Vinicius Sperandio, Maria Pontes, Anselmo Neto, Lucas Webster

Proceedings Volume 9634, 96347W (2015) https://doi.org/10.1117/12.2185464

KEYWORDS: Speckle pattern, CCD cameras, Speckle, Sensors, Photography, Phase only filters, Speckle analysis, Surface plasmons, Safety, Optical filters

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SPIE Journal Paper | 20 January 2015

Fast optimization of multipump Raman amplifiers based on a simplified wavelength and power budget heuristic

Helder de O. Rocha, Carlos E. Castellani, Jair A. Silva, Maria Pontes, Marcelo E. Segatto

OE, Vol. 54, Issue 01, 015105, (January 2015) https://doi.org/10.1117/12.10.1117/1.OE.54.1.015105

KEYWORDS: Raman spectroscopy, Optical amplifiers, Single mode fibers, Optimization (mathematics), Fiber amplifiers, Genetic algorithms, Wavelength division multiplexing, Neptunium, Optical fibers, Optical engineering

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Proceedings Article | 22 August 2014 Paper

Ultrasensitive nanosensor based on silver nanoparticles to detect hydrogen peroxide

J. Oliveira, A. Prado, R. Volkers, M. Pontes, M. Ribeiro, B. Nogueira, M. C. Guimãraes

Proceedings Volume 9286, 928641 (2014) https://doi.org/10.1117/12.2063849

KEYWORDS: Silver, Nanoparticles, Hydrogen, Nanosensors, Sodium, Statistical analysis, Absorption, Oxygen, Fiber optics sensors, Electron microscopes

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Proceedings Article | 22 August 2014 Paper

Performance analysis of multi-pump Raman+EDFA hybrid amplifiers for WDM systems

Márcia Jardim Martini, Maria José Pontes, Moisés R. Ribeiro, Hypolito José Kalinowski

Proceedings Volume 9286, 92864K (2014) https://doi.org/10.1117/12.2063555

KEYWORDS: Wavelength division multiplexing, Amplifiers, Optical amplifiers, Raman spectroscopy, Fiber amplifiers, Optical isolators, Erbium, Picosecond phenomena, Signal attenuation, Laser applications

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Proceedings Article | 22 August 2014 Paper

Synthesis of gold nanoparticles for application as biosensors in engineering

Adilson Prado, Jairo Oliveira, Bárbara Milaneze, Breno Nogueira, Marco C. Guimarães, Luiz C. Almeida, Anselmo Frizera Neto, Maria Pontes, Moisés R. Ribeiro

Proceedings Volume 9286, 92863T (2014) https://doi.org/10.1117/12.2063775

KEYWORDS: Nanoparticles, Gold, Biosensors, Surface plasmons, Absorption, Electromagnetic radiation, Transmission electron microscopy, Dielectrics, Metals, Ions

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Proceedings Article | 18 November 2013 Paper

Gain flattening analysis for Raman+EDFA hybrid amplifiers using recycled pump power for WDM systems

Márcia Jardim Martini, Carlos Eduardo Castellani, Maria José Pontes, Moisés R. Ribeiro, Hypolito José Kalinowski

Proceedings Volume 8785, 8785C2 (2013) https://doi.org/10.1117/12.2030438

KEYWORDS: Optical amplifiers, Raman spectroscopy, Wavelength division multiplexing, Fiber amplifiers, Amplifiers, Erbium, Picosecond phenomena, Optical pumping, Interference (communication), Laser optics

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Proceedings Article | 18 November 2013 Paper

Remote fiber sensors and optical amplification

M. Pontes, Thiago V. Coelho, Joel Carvalho, J. Santos, A. Guerreiro

Proceedings Volume 8785, 8785BZ (2013) https://doi.org/10.1117/12.2026191

KEYWORDS: Sensors, Remote sensing, Raman spectroscopy, Fiber Bragg gratings, Sensing systems, Refractive index, Head, Numerical modeling, Diffraction gratings, Signal attenuation

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Proceedings Article | 9 May 2012 Paper

Remote optical fiber sensor based on an LPG sensor head with Raman amplification optimized by numerical methods

Thiago Nogueira Coelho, Joel Carvalho, M. J. Pontes, J. Santos, A. Guerreiro

Proceedings Volume 8439, 84392A (2012) https://doi.org/10.1117/12.923002

KEYWORDS: Raman spectroscopy, Sensors, Fiber optics sensors, Fiber Bragg gratings, Optical fibers, Optical amplifiers, Head, Temperature metrology, Signal processing, Fiber amplifiers

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Proceedings Article | 20 March 2012 Paper

Optimization in Raman+EDFA hybrid amplifiers for WDM systems

Márcia Jardim Martini, Carlos Eduardo Castellani, Maria José Pontes, Moisés R. Ribeiro, Hypolito Kalinowski

Proceedings Volume 8257, 82570Z (2012) https://doi.org/10.1117/12.905830

KEYWORDS: Optical amplifiers, Raman spectroscopy, Amplifiers, Wavelength division multiplexing, Fiber amplifiers, Picosecond phenomena, Raman scattering, Hybrid optics, Dense wavelength division multiplexing, Systems modeling

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Proceedings Article | 26 July 2011 Paper

Remote optical fiber sensor with Raman amplification

Thiago Coelho, A. Guerreiro, Pedro Jorge, M. J. Pontes

Proceedings Volume 8001, 800146 (2011) https://doi.org/10.1117/12.892187

KEYWORDS: Sensors, Fiber Bragg gratings, Refractive index, Raman spectroscopy, Head, Environmental sensing, Remote sensing, Fiber optics sensors, Optical fibers, Raman scattering

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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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Proceedings Article | 17 May 2010 Paper

A study of the quantitative impact of pump-pump interaction in wide-band Raman amplifiers in the S, C and L bands

R. F. de Farias, P. H. Belisario, M. A. Martinez, M. T. M. R. Giraldi, M. Pontes

Proceedings Volume 7721, 77210S (2010) https://doi.org/10.1117/12.854621

KEYWORDS: Raman spectroscopy, Amplifiers, Optical amplifiers, Wave propagation, L band, Fiber amplifiers, Signal attenuation, Single mode fibers, Nonlinear optics, High power fiber amplifiers

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Proceedings Article | 17 May 2010 Paper

Analysis of a multi-pump optimization in Raman+EDFA hybrid amplifiers with pump recycling for WDM systems

Marcia da Morta Jardim Martini, Hypolito José Kalinowski, Carlos Eduardo Castellani, Maria José Pontes, Moises Renato Nunes Ribeiro

Proceedings Volume 7721, 77210R (2010) https://doi.org/10.1117/12.853457

KEYWORDS: Raman spectroscopy, Optical amplifiers, Amplifiers, Wavelength division multiplexing, Fiber amplifiers, Erbium, Picosecond phenomena, Dense wavelength division multiplexing, Testing and analysis, Raman scattering

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Proceedings Article | 1 May 2008 Paper

Studies of different modulation techniques in the integration of SCM optical communication system

Diogo Vieira Nogueira Coelho, Maria Thereza Miranda Rocco Giraldi, Daniel J. C. Coura, Marcelo Eduardo Vieira Segatto, Maria José Pontes, João Crisóstomo Weyl Albuquerque Costa

Proceedings Volume 6996, 69961W (2008) https://doi.org/10.1117/12.781500

KEYWORDS: Modulation, Particle filters, Optical fibers, Eye, Multiplexing, Amplitude shift keying, Intermodulation, Transmitters, Dispersion, Receivers

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Proceedings Article | 1 May 2008 Paper

Performance of a free space optics subsystem boosted by SCM implementation

Diogo Vieira Nogueira Coelho, Thiago V. N. Coelho, Maria Thereza Miranda Rocco Giraldi, Maria José Pontes, Marcelo Eduardo Vieira Segatto, João Crisóstomo Weyl Albuquerque Costa

Proceedings Volume 6996, 69961I (2008) https://doi.org/10.1117/12.781584

KEYWORDS: Free space optics, Particle filters, Modulation, Multiplexing, Amplitude shift keying, Transmitters, Eye, Telecommunications, Receivers, Intermodulation

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Proceedings Article | 24 May 2006 Paper

Influence of fiber parameters on the performance of a SCM_QPSK transmission system

Arnaldo Togneri, Marcelo Segatto, Maria José Pontes, Maria Thereza Giraldi, J.C.W.A. Costa

Proceedings Volume 6193, 619316 (2006) https://doi.org/10.1117/12.662826

KEYWORDS: Modulation, Particle filters, Dispersion, Eye, Quadrature amplitude modulation, Modulators, Optical fibers, Receivers, Nonlinear optics, Phase shift keying

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Proceedings Article | 24 May 2006 Paper

Upgrading the transmission capacity of local area networks by improving the receiver performance

Daniel Naves de Luces Fortes, Maria José Pontes, Maria Thereza Miranda Rocco Giraldi

Proceedings Volume 6193, 619319 (2006) https://doi.org/10.1117/12.662045

KEYWORDS: Receivers, Optical amplifiers, Local area networks, Photodetectors, Optical filters, Telecommunications, Dispersion, Computer simulations, Calibration, Modulation

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Proceedings Article | 14 August 2001 Paper

High-gain EDFA using ASE suppression: numerical simulation and experimental characterization

Eudes Woellner, Meire Fugihara, Marcio Vendramin, Edson Chitz, Hypolito Kalinowski, Maria Pontes

Proceedings Volume 4419, (2001) https://doi.org/10.1117/12.437248

KEYWORDS: Optical amplifiers, Fiber amplifiers, Polarization, Erbium, Ions, Numerical simulations, Stochastic processes, Televisions, Fiber optics, Optical simulations

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Proceedings Article | 28 April 1999 Paper

Multiplexed fiber optic Bragg grating sensors for strain and temperature measurements in power systems

Hypolito Kalinowski, Roberta Chaves, Ilda Abe, Manoel Diogo dos Santos, Maria Pontes, Murilo Romero, Carlos de Francisco

Proceedings Volume 3666, (1999) https://doi.org/10.1117/12.347974

KEYWORDS: Fiber Bragg gratings, Temperature metrology, Fiber optics sensors, Sensors, Optical filters, Interferometers, Multiplexing, Transducers, Optical fibers, Spectrum analysis

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Proceedings Article | 7 October 1998 Paper

Fiber ring laser optimization as an optical source for WDM transmission systems

Maria Pontes, Hypolito Kalinowski, Maria Rocco Giraldi

Proceedings Volume 3531, (1998) https://doi.org/10.1117/12.327046

KEYWORDS: Optical filters, Fiber lasers, Wavelength division multiplexing, Erbium, Erbium lasers, Spectrum analysis, Laser resonators, Mechanics, Telecommunications, Optical isolators

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Proceedings Article | 1 September 1996 Paper

Optimization of the pump power distribution in a two-stages erbium-doped fiber amplifier

M. Pontes

Proceedings Volume 2778, 2778D2 (1996) https://doi.org/10.1117/12.2316159

KEYWORDS: Fiber amplifiers, Optical amplifiers, Signal attenuation, Integrated optics, Microwave radiation, Electrical engineering, Quantum electronics, Physics, Surface plasmons

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Showing 5 of 28 publications

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