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Proceedings Paper

A new data diffraction method for digital signal analysis and optoelectronic-fiber system-digital design
Author(s): N. D. McMillan; J. Egan; D. Denieffe; S. Riedel; K. Tiernan; D G. E. McMillan; G. Farrell; David Kennedy; Greg Doyle; G. McGowan; A. Augousti; J. Mason
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Paper Abstract

For the first time the term data diffraction is introduced, with examples drawn from the algorithm known as phase coherent data-scatter (PCDS) that produces identifiable visual patterns for different types of signal degradation in optical telecommunications. The main signal degradation factors that affect the performance of optical fibers include attenuation, rise-times and dispersion. The theory behind data-scatter is introduced including comprehensive explanations of the theoretical conceptual components of this technique such as centroids, exchange operation, coherence, closeness and projection radius. The various issues of assessing the quality of digital signals are outlined using a simulation study. The authors for the study of optical telecommunications issues have extended the functionality of data-scatter. This approach shows considerable promise. The utility of the data-entropy based 'quality budget method' for optoelectronic system engineering is revisited using an information theory based approach for optical telecommunications. Proposals for the implementation of pattern recognition algorithms to analyse the repeatable patterns within data-scatter are discussed. The paper concludes with brief considerations into the advantages of linking the new data-scatter and data-entropy approaches in digital fiber systems for performance quantification and assessment.

Paper Details

Date Published: 3 June 2005
PDF: 12 pages
Proc. SPIE 5825, Opto-Ireland 2005: Optoelectronics, Photonic Devices, and Optical Networks, (3 June 2005); doi: 10.1117/12.605097
Show Author Affiliations
N. D. McMillan, Institute of Technology Carlow (Ireland)
J. Egan, Institute of Technology Carlow (Ireland)
D. Denieffe, Institute of Technology Carlow (Ireland)
S. Riedel, Kelman Ltd. (United Kingdom)
K. Tiernan, Dublin Institute of Technology (Ireland)
D G. E. McMillan, Glasgow Univ. (United Kingdom)
G. Farrell, Dublin Institute of Technology (Ireland)
David Kennedy, Dublin Institute of Technology (Ireland)
Greg Doyle, Institute of Technology Carlow (Ireland)
G. McGowan, Next Generation Networks (Ireland)
A. Augousti, Kingston Univ. (United Kingdom)
J. Mason, Kingston Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 5825:
Opto-Ireland 2005: Optoelectronics, Photonic Devices, and Optical Networks
John Gerard McInerney; Harold S. Gamble; Gerald Farrell; David M. Denieffe; Padraig Hughes; R. Alan Moore; Liam Barry, Editor(s)

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