Papers in Conference Proceedings  [41] 

- Cartaxo, A.; Alves , T. M. F.; Carvalho, F. C.; J. Morgado; "Linearization techniques of electro-optical converters for multi-format OFDM-based PONs", Proc International Conf. on Transparent Optical Networks - ICTON, Coventry, United Kingdom, Vol. , pp. 1 - 4, July, 2012.
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- Alves , T. M. F.; J. Morgado; Cartaxo, A.; "Linearity improvement of directly modulated PONs by digital pre-distortion of coexisting OFDM-based signals", Proc OSA Access Networks and In-house Communications (OSA Topical Meeting) - ANIC, Colorado Springs, United States, Vol. AW4A.3, pp. 1 - 2, June, 2012.
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- J. Morgado; Fonseca, D.F.; Cartaxo, A.; "Influence of Spectrum Location of Gigabit-Ethernet in Coexistence with Multi-Band OFDM-UWB Wireless Signals on the Long-Reach PON Performance Using Directly Modulated Lasers", Proc IEEE International Topical Meeting on Microwave Photonics, Singapore, Singapore, Vol. --, pp. -- - --, October, 2011.
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- Fonseca, D.F.; J. Morgado; Cartaxo, A.; "Multi-band UWB signals transmission improvement due to pre-emphasis in LR-PONs using DMLs", Proc IEEE Photonics Conf. - IPC, Arlington, United States, Vol. -, pp. - - -, October, 2011.
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- J. Morgado; Fonseca, D.F.; Cartaxo, A.; "Transmission of Coexisting OFDM-Baseband and Multi-Band OFDM-UWB Signals Along LR-PONs Using DMLs", Proc IEEE Photonics Conf. - IPC, Arlington, United States, Vol. --, pp. -- - --, October, 2011.
Abstract | Full text (PDF 133KB) | BibTex

- Cartaxo, A.; J. Morgado; Fonseca, D.F.; "A perspective on optical-wireless converged NG-FTTH networks using directly modulated lasers", Proc International Conf. on Transparent Networks – ICTON , Stockholm, Sweden, Vol. 1, pp. 1 - 4, June, 2011.
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- Fernandes, C. F.; J. Morgado; J.M. Boavida; "Analysis of Phase-Shift DFB Lasers Using the Dynamic Transfer-Matrix-Method", Proc IEEE II Conf. on Telecommunications - CONATEL 2011, Arequipa, Peru, Vol. -, pp. -1 - -4, May, 2011.
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- Fonseca, D.F.; J. Morgado; Cartaxo, A.; "Transmission of multi-band OFDM-UWB signals along NG-FTTH networks using directly modulated lasers", Proc OSA Optical Fiber Communications - OFC, Los Angeles, United States, Vol. paper OWK2, pp. - - -, March, 2011.
Abstract | Full text (PDF 210KB) | BibTex

- Cartaxo, A.; J. Morgado; Alves , T. M. F.; Carvalho, F. C.; Fonseca, D.F.; Rebola, J. L. ; "A view on optical-wireless converged NG-FTTH networks ", Proc Annual Workshop on Photonic Technologies for Access and Biophotonics, Stanford, United States, Vol. , pp. - - -, January, 2011.
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- J. Morgado; Cartaxo, A.; "OFDM-UWB signal distribution over long-reach PON using directly modulated lasers", Proc International Conf. on Transparent Networks – ICTON , Munchen, Germany, Vol. --, pp. 1 - 4, July, 2010.
Abstract | Full text (PDF 155KB) | BibTex

- J.M. Boavida; Fernandes, C. F.; J. Morgado; "Improvements on Phase-Shifted Distributed-Coupling-Coefficient Distributed Feedback Laser Structures for Single Longitudinal Mode Operation", Proc Progress in Electromagnetics Research Symp. - PIERS, Xi'an, China, Vol. 1, pp. 1231 - 1235, March, 2010.
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- J.M. Boavida; Fernandes, C. F.; J. Morgado; "On the Performance of DFB Laser Structures Specially Designed for Directly-Modulated Optical Communication Systems", Proc Progress in Electromagnetics Research Symp. - PIERS, Xi'an, China, Vol. 1, pp. 1236 - 1240, March, 2010.
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- J.M. Boavida; J. Morgado; Fernandes, C. F.; "Easily feasible high-yield DFB laser with high power efficiency and tight wavelength tolerance", Proc IEEE Lasers and Electro Optics Society Annual Meeting - LEOS, Antalya, Turkey, Vol. 1, pp. 843 - 844, October, 2009.
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- J.M. Boavida; Fernandes, C. F.; J. Morgado; "Improvements on Corrugation Pitch Modulated Distributed Coupling Coefficient Distributed Feedback Laser Structures for Single Longitudinal Mode Operation", Proc International Conf. on Transparent Networks – Mediterranean Winter - ICTON MW, Ponta Delgada, Portugal, Vol. 1, pp. We.D5.4 - We.D5.4, July, 2009.
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- J.M. Boavida; Fernandes, C. F.; J. Morgado; "Optimization of a Corrugation-Pitch-Modulated Distributed-Coupling-Coefficient Laser Structure", Proc IASTED International Conf. on Wireless and Optical Communications - WOC, Banff,Alberta, Canada, Vol. 1, pp. 88 - 93, July, 2009.
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- J. Morgado; Fernandes, C. F.; J.M. Boavida; "Above-threshold analysis in an optimized three phase-shift DFB laser structure for stable single-mode operation ", Proc International Conf. on Transparent Networks – ICTON , São Miguel, Portugal, Vol. 1, pp. 1 - 5, June, 2009.
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- J. Morgado; Cartaxo, A.; "Influence of laser chirp on the performance of 40Gbit/s optically compensated directly modulated systems", Proc International Conf. on Transparent Networks – ICTON , São Miguel, Portugal, Vol. 1, pp. 1 - 5, June, 2009.
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- J.M. Boavida; Fernandes, C. F.; J. Morgado; "Near Threshold Regime Optimization of a Corrugation-Pitch-Modulated DFB Laser Structure with Inhomogeneous Coupling Coefficient", Proc Conf. on Telecommunications - ConfTele, St Maria da Feira, Portugal, Vol. 1, pp. 343 - 346, May, 2009.
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- Fernandes, C. F.; J. Morgado; "On the Optimization of Three Phase-Shift Distributed Feedback Laser Structures Using Matrix Techniques", Proc IASTED International Conf. on Wireless and Optical Communications - WOC, Quebec, Canada, Vol. 1, pp. 151 - 157, May, 2008.
Abstract | Full text (PDF 201KB) | BibTex

- J. Morgado; Fernandes, C. F.; "Optimisation of a single phase-shift distributed coupling coefficient DFB laser structure near threshold regime", Proc IEEE Mediterranean Electr. Conf. - MELECON , Ajaccio, France, Vol. 1, pp. 222 - 228, May, 2008.
Abstract | Full text (PDF 297KB) | BibTex

- J. Morgado; Cartaxo, A.; "Influence of laser chirp and parasitics on optimized dispersion-managed directly modulated systems operating at 10Gbit/s", Proc International Microwave and Optoelectronics Conf. - IMOC, Salvador, Brazil, Vol. --, pp. 531 - 535, October, 2007.
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- J. Morgado; Cartaxo, A.; "Guidelines for laser optimization for dispersion supported transmission systems", Proc Conf. on Telecommunications - ConfTele, Tomar, Portugal, Vol. --, pp. -- - --, April, 2005.
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- J. Morgado; Cartaxo, A.; "Optimization of a fiber-based dispersion compensation scheme for long-haul directly-modulated/direct-detection systems", Proc Conf. on Telecommunications - ConfTele, Tomar, Portugal, Vol. --, pp. -- - --, April, 2005.
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- Cartaxo, A.; J. Morgado; "Efficient and accurate numerical solution of stochastic partial differential equations: formulating a problem", Proc Matemática em Telecomunicações - Que Problemas? - MTQP, Tomar, Portugal, Vol. 1, pp. 205 - 217, September, 2003.
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- J. Morgado; Cartaxo, A.; "Comparison of laser optimisation for dispersion supported transmission systems at various bit rates", Proc European Conf. on Networks and Optical Communications - NOC, Viena, Austria, Vol. 1, pp. 28 - 35, July, 2003.
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- J. Morgado; Cartaxo, A.; "Accurate estimation of BER floor due to laser noise on directly modulated direct detection transmission systems", Proc Conf. on Telecommunications - ConfTele, Aveiro, Portugal, Vol. 1, pp. 331 - 334, June, 2003.
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- J. Morgado; Cartaxo, A.; "Laser optimization for dispersion supported transmission technique", Proc Conf. on Telecommunications - ConfTele, Aveiro, Portugal, Vol. 1, pp. 569 - 572, June, 2003.
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- J. Morgado; Cartaxo, A.; "New semi-analytical method of estimating the influence of laser noise on direct detection system performance", Proc Pacific Rim Conf. on Lasers and Electro-Optics, Chiba, Japan, Vol. II, pp. 324 - 325, July, 2001.
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- J. Morgado; Cartaxo, A.; "On the semi-analytical estimation of laser noise influence on direct detection transmission system performance", Proc Conf. on Telecommunications - ConfTele, Figueira da Foz, Portugal, Vol. 1, pp. 364 - 368, April, 2001.
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- J. Morgado; Cartaxo, A.; "Influence of dispersion propagation regime on the dispersion supported transmission performance", Proc Applications of Photonic Technology, Quebec, Canada, Vol. 4087, pp. 457 - 468, June, 2000.
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- J. Morgado; Cartaxo, A.; "Influence of relative intensity noise enhancement by fiber nonlinearity on dispersion supported transmission system performance", Proc Applications of Photonic Technology, Quebec, Canada, Vol. 4087, pp. 469 - 480, June, 2000.
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- J. Morgado; Cartaxo, A.; "Nonlinear transmission of noise along singlemode fiber at zero-dispersion wavelength", Proc IEEE Lasers and Electro Optics Society Annual Meeting - LEOS, S. Francisco, United States, Vol. 1, pp. 607 - 608, November, 1999.
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- J. Morgado; Cartaxo, A.; "Impact of laser and booster noises in repeaterless IM/DD systems with optical post- and pre-amplifiers", Proc Pacific Rim Conf. on Lasers and Electro-Optics, Seul, Korea, South, Vol. II, pp. 497 - 498, September, 1999.
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- J. Morgado; Cartaxo, A.; "Frequency noise transmission over nonlinear dispersive singlemode fibres at zero-dispersion wavelength", Proc Conf. on Telecommunications - ConfTele, Sesimbra, Portugal, Vol. 1, pp. 535 - 539, April, 1999.
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- J. Morgado; Cartaxo, A.; "Influence of fibre nonlinearity on noise transmission in IM/DD repeaterless system with optical post- and pre-amplifiers ", Proc Conf. on Telecommunications - ConfTele, Sesimbra, Portugal, Vol. 1, pp. 269 - 273, April, 1999.
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- J. Morgado; Cartaxo, A.; "Relative intensity noise induced by fibre dispersion at zero-dispersion wavelength in nonlinear dispersive singlemode fibres", Proc Conf. on Telecommunications - ConfTele, Sesimbra, Portugal, Vol. 1, pp. 540 - 544, April, 1999.
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- J. Morgado; Cartaxo, A.; "A new measurement technique of optical fiber nonlinearity using the first disp frequency of fiber transfer function", Proc International Conf. on Applications of Photonic Technology, Otawa, Canada, Vol. 3491, pp. 812 - 817, July, 1998.
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- J. Morgado; Cartaxo, A.; "Assessment of laser intensity noise spectrum from rigorous numerical simulation of singlemode laser rate equations", Proc International Conf. on Applications of Photonic Technology, Otawa, Canada, Vol. 3491, pp. 157 - 162, July, 1998.
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- J. Morgado; Cartaxo, A.; "Impact of amplifier spacing on RIN enhancement of IM/DD transmission system", Proc European Conf. on Networks and Optical Communications - NOC, Manchester, United Kingdom, Vol. 1, pp. 220 - 227, July, 1998.
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- J. Morgado; Cartaxo, A.; "Enhancement of laser phase noise to intensity noise conversion by fiber nonlinearity and its impact on the intensity modulation system performance", Proc SPIE - All-optical communication systems: architecture,, Dallas, United States, Vol. 3230, pp. 30 - 41, November, 1997.
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- J. Morgado; Cartaxo, A.; "Impact of relative intensity noise enhancement by fiber nonlinearity on IM-DD transmission system performance", Proc IEEE Lasers and Electro Optics Society Annual Meeting - LEOS, S. Francisco, United States, Vol. 1, pp. 295 - 296, November, 1997.
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