Academic position:
Assistant Professor
Joining date:
01-01-1999
Role in IT: Researcher Scientific Area: Optical Communications
Group: Optical Communications and Photonics – Av
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Implementação numa FPGA de Técnicas MIMO para os futuros sistemas de transmissão wireless-(Sistemas de 4G/LTE), MSc, HUGO FILIPE ORFAO DA SILVA, 01-07-2013
Publications
Papers in Journals [13]
- Liu, Z.; Violas, M.; Carvalho, N.B.C.; "Modeling and Simulation of a Reflective Semiconductor Optical Amplifier Modulator Using X-Parameters® ", IEEE Photonics Technology Letters, Vol. 25, No. 3, pp. 272 - 274, February, 2013.
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- Liu, Z.; Violas, M.; Carvalho, N.B.C.; "Wideband Dynamic Behavioral Modeling of Reflective Semiconductor Optical Amplifiers Using a Tapped-Delay Multilayer Perceptron", Optics Express, Vol. 21, No. 3, pp. 3354 - 3362, February, 2013.
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- Liu, Z.; Violas, M.; Carvalho, N.B.C.; "Analysis on Dynamic Characteristics of Reflective Semiconductor Optical Amplifier Based on a Memory Polynomial Model", Microwave and Optical Tech. Letters, Vol. 54, No. 3, pp. 805 - 808, March, 2012. Abstract
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- D. Wake; A. Nkansah; P. Assimakopoulos ; N. J. G. Gomes; Violas, M.; Liu, Z.; Pato, S.; Ferreira, F. M.; G. Valicourt; R. Brenot; "Rádio sobre Fibra", Revista RTI - Redes, Telecom e Instalações, Vol. -, No. -, pp. 52 - 63, November, 2011.
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- Liu, Z.; Violas, M.; Carvalho, N.B.C.; "Digital Predistortion for RSOAs as External Modulators in Radio over Fiber Systems", Optics Express, Vol. 19, No. 18, pp. 17641 - 17646, August, 2011. Abstract
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- Liu, Z.; M. Sadeghi; G. Valicourt; R. Brenot; Violas, M.; "Experimental Validation of a Reflective Semiconductor Optical Amplifier Model Used as a Modulator in Radio Over Fiber Systems", IEEE Photonics Technology Letters, Vol. 23, No. 9, pp. 576 - 578, May, 2011. Abstract
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- Violas, M.; D. Wake; F. Van Dijk; F. Van Dijk; C. Ware; A. Enard; D. Make; Liu, Z.; M. Lamponi; R. Brenot; "Radio-Over-Fiber Access Network Architecture Based on New Optimized RSOA Devices With Large Modulation Bandwidth and High Linearity", IEEE Trans. on Microwave Theory and Tech., Vol. 58, No. 11 , pp. 3248 - 3258, November, 2010. Abstract
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- G. Valicourt; F. Pommereau; F. Poingt; M. Lamponi; G. H. Duan; Violas, M.; R. Brenot; "Chirp Reduction in Directly Modulated Multi-Electrode RSOA Devices in Passive Optical Networks", IEEE Photonics Technology Letters, Vol. 22, No. 19, pp. 1425 - 1427, October, 2010. Abstract
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- D. Wake; A. Nkansah; N. J. G. Gomes; G. Valicourt; R. Brenot; Violas, M.; Liu, Z.; Ferreira, F. M.; Pato, S.; "A Comparison of Radio over Fiber Link Types for the Support of Wideband Radio Channels", IEEE/OSA Journal of Lightwave Tech., Vol. 28, No. 16, pp. 2416 - 2422, August, 2010. Abstract
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- Drummond, M. V.; Nogueira, R.N. ; Violas, M.; Monteiro, P.; C. Sterner; P.-Y. Fonjallaz; "All-Optical generation of 40 Gb/s Single Sideband Signals Using a Fiber Bragg Grating", Optics Communications, Vol. 283, No. 12, pp. 2492 - 2495, June, 2010. Abstract
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- Drummond, M. V.; Nogueira, R.N. ; Monteiro, P.; Violas, M.; C. Sterner; P.-Y. Fonjallaz; "Tunable Optical Dispersion Compensator based on Power Splitting between Two Dispersive Media", IEEE/OSA Journal of Lightwave Tech., Vol. 28, No. 8, pp. 1164 - 1175, April, 2010. Abstract
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- Luís M. R. Teixeira; Monteiro, P.; Violas, M.; Teixeira, A.; Santos, J. M.; "Adaptive Chromatic Dispersion Compensation Using Electrical Transversal Filters", Revista do Departamento de Electrónica e de Telecomunicações, Universidade de Aveiro, Vol. 4, No. 2, pp. 186 - 190, January, 2004.
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Papers in Conference Proceedings [28]
- Liu, Z.; Violas, M.; Carvalho, N.B.C.; "Transmission of Four Channels SCM Over Fiber and Nonlinear Compensation for RSOA External Modulators", Proc IEEE GLOBECOM Workshops: Distributed Antenna Systems for Broadband Mobile Communication, Houston, United States, Vol. -, pp. 1 - 5, December, 2011.
Abstract
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- Liu, Z.; Violas, M.; M. Sadeghi; G. Valicourt; "4 Channels Subcarrier Multiplexing Optical Link Using an RSOA Modulator", Proc IEEE International Topical Meeting on Microwave Photonics, Montreal, Canada, Vol. --, pp. 128 - 130, October, 2010.
Abstract
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- D. Wake; A. Nkansah; N. J. G. Gomes; Violas, M.; Liu, Z.; Pato, S.; Ferreira, F. M.; G. Valicourt; R. Brenot; "Design and Performance of Radio over Fibre Links for Next Generation Wireless Systems using Distributed Antennas", Proc Future Network and Mobile Summit, Florence, Italy, Vol. --, pp. -- - --, June, 2010.
Abstract
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- Drummond, M. V.; Nogueira, R.N. ; Monteiro, P.; Violas, M.; P.-Y. Fonjallaz; "Novel Opto-Electrical Tunable Dispersion Compensator for IM Signals", Proc European Conf. on Optical Communications - ECOC, Vienna, Austria, Vol. P3.06, pp. 1 - 2, September, 2009.
Abstract
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- Nogueira, R.N. ; Drummond, M. V.; Violas, M.; Monteiro, P.; "Tunable Passive Compensating Devices for High Bit Rate Optical Systems", Proc International Conf. on Transparent Networks – ICTON , Athens, Greece, Vol. Th.B1.2, pp. 266 - 269, July, 2008.
Abstract
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- Monteiro, P.; Madureira, M.; D. Fonseca; Aguiar, R. L.; Cartaxo, A.; Violas, M.; "Optical Channel Impairments Mitigation on 40 Gb/s Systems Resorting to Post-Detection Adjustable Electrical Compensation", Proc International Conf. on Transparent Networks – ICTON , Rome, Italy, Vol. 1, pp. 20 - 23, July, 2007.
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- Aguiar, R. L.; Monteiro, P.; Madureira, M.; D. Fonseca; Cartaxo, A.; R. Sousa ; Violas, M.; "Electronic dispersion compensation solution for high-speed optical fiber communications", Proc Symp. on Innovative Lightwave Technology Evolution for 100GbE Services, 0, Japan, Vol. 0, pp. 0 - 0, March, 2007.
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- Fonseca, D.F.; Cartaxo, A.; Monteiro, P.; Silveira, T.; A. Ferreira; Violas, M.; "40 Gbit/s OSSB-NRZ transmitter for high capacity systems", Proc European Conf. on Optical Communications - ECOC, Glasgow, United Kingdom, Vol. 4, pp. 787 - 788, September, 2005.
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- P. Montero; Violas, M.; Ribeiro, R. F. S.; Luís M. R. Teixeira; Madureira, M.; Aguiar, R. L.; Rocha, R. F.; "Adaptive Electronic Equalizers for Very High Speed Optical Communication Systems", Proc Symp. on Enabling Optical Networks - SEON, Aveiro, Portugal, Vol. 1, pp. 2 - 3, June, 2005.
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- Aguiar, R. L.; Madureira, M.; Violas, M.; Monteiro, P.; "An Electrically Adjustable Distributed Pulse Shaping Filter for 40-Gbit/s Optical Links", Proc IEEE International Symp. on Circuits and Systems - ISCAS, Kobe, Japan, Vol. 1, pp. 1 - 1, May, 2005.
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- Aguiar, R. L.; Madureira, M.; Monteiro, P.; Violas, M.; "Practical Implementations Of Monolithic Transversal Filters For Electric Dispersion Compensation On High-Speed Optical Links", Proc Conf. on Telecommunications - ConfTele, Tomar, Portugal, Vol. 0, pp. 0 - 0, May, 2005.
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- Luís M. R. Teixeira; P. Monteiro; Violas, M.; "Feasibility of Transversal Filters for Adaptive Chromatic Dispersion Compensators in Multigigabit Optical Communication Systems", Proc Conf. on Telecommunications - ConfTele, Tomar, Portugal, Vol. 1, pp. - - -, April, 2005.
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- Madureira, M.; Monteiro, P.; Aguiar, R. L.; Violas, M.; "Practical implementaions of monolithic transversal filters for electric dispersion compensation on high-speed optical links", Proc Conf. on Telecommunications - ConfTele, Tomar, Portugal, Vol. 0, pp. 0 - 0, April, 2005.
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- J. Machado; Luís M. R. Teixeira; Madureira, M.; Santos, J. M.; Monteiro, P.; Pinto, A. N.; Violas, M.; "Dynamic Electronic Dispersion Compensation for Efficient Micro & Millimetre Wave Optical Transceivers", Proc Photonic Signal Processing for Defence Applications, Rome, Italy, Vol. -, pp. - - -, March, 2005.
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- Silveira, T.; Monteiro, P.; Ferreira , A.P.S.; Violas, M.; Ribeiro, R. F. S.; Rocha, R. F.; Luís M. R. Teixeira; "Electrical Dispersion Compensation at 10Gb/s Optical Single Sideband Transmission Systems", Proc IEEE Lasers and Electro Optics Society Annual Meeting - LEOS, San Juan, Puerto Rico, Vol. , pp. 759 - 760, November, 2004.
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- Monteiro, P.; Luís M. R. Teixeira; Violas, M.; Ribeiro, R. F. S.; Teixeira, A.; Rocha, R. F.; "Adaptive Electronic Equalizers for Multigigabit Optical Communication Systems", Proc International Symp. in Circuits and Systems, Linz, Austria, Vol. -, pp. 200 - 203, August, 2004.
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- Luís M. R. Teixeira; Monteiro, P.; Violas, M.; Teixeira, A.; "Optical Signal Monitoring for Adaptive Equalization Using Transversal Filters", Proc Symp. on Enabling Optical Networks - SEON, Porto, Portugal, Vol. 1, pp. 101 - 102, June, 2004.
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- Monteiro, P.; Violas, M.; Ribeiro, R. F. S.; Rocha, R. F.; "Electronic Post-detection Filter for Multigigabit Optical Communication Systems", Proc IEEE International Symp. on Electron Devices for Microwave and Optoelectronics Applications, Orlando, United States, Vol. 03TH8691, pp. 192 - 197, November, 2003.
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- Maia, T.; Ribeiro, R. F. S.; Monteiro, P.; Violas, M.; "10Gbit/s Optical Single Sideband Transmission using Zero Forcing Equalization", Proc International Conf. on Wireless and Optical Communications - WOC, Banff, Canada, Vol. 1, pp. 104 - 109, July, 2003.
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- Aguiar, R. L.; Madureira, M.; Monteiro, P.; Violas, M.; M. Gloanec; E. Leclerc; B. Lefebvre; "Broadband Optical Receiver for Multigigabit-per-second (40Gb/s) Optical Communication Systems in 0.135ƒÝm PHEMT technology", Proc IEEE International Symp. on Circuits and Systems - ISCAS, Bangkoq, Thailand, Vol. 1, pp. 409 - 412, May, 2003.
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- Aguiar, R. L.; Madureira, M.; Monteiro, P.; Violas, M.; M. Gloanec; E. Leclerc; B. Lefebvre; "High Gain GaAs 10Gbps Receiver with Integrated Bondwire Effects", Proc IEEE International Symp. on Circuits and Systems - ISCAS, Bangkoq, Thailand, Vol. 1, pp. 173 - 176, March, 2003.
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- Aguiar, R. L.; Madureira, M.; Monteiro, P.; Violas, M.; M. Gloanec; E. Leclerc; B. Lefebvre; "Broadband Optical Receiver for Multigigabit-per-second (40Gb/s) Optical Communications Systems", Proc IEEE International Symp. on Electron Devices for Microwave and Optoelectronics Applications, Manchester, United Kingdom, Vol. 1, pp. 271 - 275, November, 2002.
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- Monteiro, P.; Violas, M.; Ribeiro, R. F. S.; Rocha, R. F.; "Active Distributed Transversal Filters for Multigigabit Optical Communication Systems", Proc International Workshop on Microwave Filters, Touluse, France, Vol. -, pp. - - -, June, 2002.
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- Monteiro, P.; Ribeiro, R. F. S.; Violas, M.; Rocha, R. F.; "40 Gbit/s GaAs MMIC Signal Processor for Optical Communication Systems", Proc Gallium Arsenide Applications Symp. - GAAS, London, United Kingdom, Vol. -, pp. 615 - 618, September, 2001.
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- Nogueira, R.N. ; Violas, M.; Drummond, M. V.;
"FILTRO ÓPTICO COM RESPOSTA SINTONIZÁVEL DE FORMA CONTÍNUA BASEADO NA COMBINAÇÃO DE DIFERENTES FILTROS ÓPTICOS", PT104237, December, 2010.
