Showing papers by "Mike J. O'Mahony published in 1996"
TL;DR: In this paper, the authors studied the effect of interband and intraband crosstalk in multi-wavelength optical cross-connect (multi-spl lambda/OXC) networks.
Abstract: Optical crosstalk in multiwavelength optical cross-connect (multi-/spl lambda/ OXC) networks is studied. Two crosstalk mechanisms, interband and intraband crosstalk, caused by nonideal wavelength demultiplexing and space switching, are identified in this work. Their nature and accumulation behaviors are studied in detail. It has been established that the intraband crosstalk, where the crosstalk elements fall within the signal wavelength carrier band, is much more deleterious to the network end-end transparency performance. Three multi-/spl lambda/ OXC node architectures realising similar optical cross-connecting functions have been analyzed. Improvements in the most damaging intraband crosstalk can be realized by introducing a wavelength selective filter between the switch outputs and the wavelength multiplexer inputs. System penalty analyses associated with the crosstalk are also carried out using realistic system and device parameters, Both simulation and statistical analysis based approaches are presented.
111 citations
Proceedings Article•
01 Jan 1996TL;DR: In this paper, the authors evaluate the feasibility of an optical overlay network interconnecting major cities within Europe, which employs wavelength routing to provide the required interconnection between network nodes, and have a number of key activities and achievements relating to traffic modelling, transmission, network topologies and dimensioning, and protection strategies.
Abstract: The objective of COST 239 (Ultra-High Capacity Optical Transmission Networks) is to evaluate the feasibility of an optical overlay network interconnecting major cities within Europe. This European Optical Network employs wavelength routing to provide the required interconnection between network nodes. The study has a number of key activities and achievements relating to traffic modelling, transmission, network topologies and dimensioning, and protection strategies. In this paper the emphasis is on network rather than transmission aspects.
69 citations
25 Feb 1996
TL;DR: In this article, a comprehensive theoretical study on the laser-controlled Er-doped fiber amplifiers (EDFAs) is presented, where explicit analytical expressions are derived for the calculation of amplifier gain and noise spectra, critical input signal power; and optimum amplifier length.
Abstract: Summary form only given. This report presents for the first time a comprehensive theoretical study on the laser-controlled Er-doped fiber amplifiers (EDFAs). Explicit analytical expressions are derived for the calculation of amplifier gain and noise spectra, critical input signal power; and optimum amplifier length without resorting to any numerical methods of analysis.
2 citations