PLI-aware routing in regenerated mesh topology optical networks

Politi, CT; Anagnostopoulos, V; Stavdas, A

dc.contributor.author	Politi, CT	en
dc.contributor.author	Anagnostopoulos, V	en
dc.contributor.author	Stavdas, A	en
dc.date.accessioned	2014-03-01T02:12:02Z
dc.date.available	2014-03-01T02:12:02Z
dc.date.issued	2012	en
dc.identifier.issn	07338724	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29987
dc.subject	Optical networks	en
dc.subject	regeneration	en
dc.subject	wavelength routing algorithms (WRAs)	en
dc.subject.other	Bit error rate (BER) performance	en
dc.subject.other	Blocking performance	en
dc.subject.other	Error accumulation	en
dc.subject.other	Mesh topologies	en
dc.subject.other	Network state	en
dc.subject.other	Optical path	en
dc.subject.other	Physical-layer impairments (PLIs)	en
dc.subject.other	regeneration	en
dc.subject.other	Shortest distance	en
dc.subject.other	Wavelength continuity constraint	en
dc.subject.other	Wavelength routing	en
dc.subject.other	Wavelength-switched	en
dc.subject.other	Algorithms	en
dc.subject.other	Network layers	en
dc.subject.other	Routing algorithms	en
dc.subject.other	Wavelength	en
dc.subject.other	Fiber optic networks	en
dc.title	PLI-aware routing in regenerated mesh topology optical networks	en
heal.type	journalArticle	en
heal.identifier.primary	10.1109/JLT.2012.2187324	en
heal.identifier.secondary	http://dx.doi.org/10.1109/JLT.2012.2187324	en
heal.identifier.secondary	6150986	en
heal.publicationDate	2012	en
heal.abstract	Wavelength routing algorithms (WRAs) aware of Physical layer impairments (PLIs) have been proposed in order to manage the establishment of optical paths in wavelength-switched optical networks. However, if optical nodes incorporate regenerators/wavelength converters, PLI-aware WRAs should be devised in order to incorporate error accumulation in the signal in the PLI estimation and relaxation of the wavelength continuity constraint in the path calculation. In this paper, we utilize a new bit error rate performance estimation in combination with the PLI-aware WRA in order to systematically investigate the role of regeneration and wavelength conversion in optical networks. Based on the outcomes of the study, we also propose a path establishment algorithm that is based on the instant physical properties of the path and can dynamically adapt to the network state. This is proven beneficial as far as the blocking performance is concerned as it circumvents the weaknesses that appear in the traditional shortest distance path establishment algorithms in a PLI-aware environment that operates without the wavelength continuity constraint. © 2012 IEEE.	en
heal.journalName	Journal of Lightwave Technology	en
dc.identifier.doi	10.1109/JLT.2012.2187324	en
dc.identifier.volume	30	en
dc.identifier.issue	12	en
dc.identifier.spage	1960	en
dc.identifier.epage	1970	en