Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
What Photonics Can Do for Switching in Transparent Optical Networks
KTH, School of Information and Communication Technology (ICT), Optics and Photonics (Closed 20120101), Photonics (Closed 20120101). (NEGONET)ORCID iD: 0000-0001-6704-6554
KTH, School of Information and Communication Technology (ICT), Optics and Photonics (Closed 20120101), Photonics (Closed 20120101). (NEGONET)
KTH, School of Information and Communication Technology (ICT), Optics and Photonics (Closed 20120101), Photonics (Closed 20120101). (NEGONET)ORCID iD: 0000-0002-5636-9910
2010 (English)In: European Conference on Networks  and Optical Communications (NOC), 2010Conference paper, Published paper (Other academic)
Abstract [en]

Transparent optical networks, based on WDM technology, are considered as the mostpromising candidates for future high capacity communication networks because of theirscalability and energy efficiency. In such networks, switching functions will be carriedout directly in the optical domain so that high speed optical signals will traverse thenetwork without any optical-to-electrical conversion. Different switching paradigms canbe applied, such as optical circuit switching OCS, optical burst switching OBS andoptical packet switching OPS, offering different switching granularities and performance.A number of challenges are associated with each of the switching paradigm. This talkwill highlight some of these challenges and review pros and cons of using photonictechnology for switching in communication networks. The optical circuit switching (OCS) is based on a course switching granularity (mostly atwavelength level). It provides end-to-end optical channels (lightpaths) between sourceand destination nodes. The basic function of OCS network is solving routing andwavelength assignment (RWA) problem, i.e. finding a suitable physical path for eachlightpath request and assigning an available wavelength to it. A suitable OCS nodearchitecture and technology can significantly improve network performance.On the other hand, switching in OPS networks should be done on per packet basisproviding high switching granularity, which in turn gives a potential for better resourceutilization compared with OCS. However, several fundamental problems need to besolved in order to implement OPS networks. In particular, packet contention at the OPSnodes needs to be efficiently handled in order to guarantee required networkperformance. However, lack of flexible optical memory makes the contentionresolution in optical domain very difficult.

Place, publisher, year, edition, pages
2010.
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-85524OAI: oai:DiVA.org:kth-85524DiVA: diva2:499966
Conference
15th European Conference on Networks and Optical Communications. Faro-Algarve, Portugal. 8-10 June 2010
Note

QC 20120423

Available from: 2012-02-13 Created: 2012-02-13 Last updated: 2016-04-11Bibliographically approved

Open Access in DiVA

No full text

Authority records BETA

Wosinska, LenaMonti, Paolo

Search in DiVA

By author/editor
Wosinska, LenaChen, JiajiaMonti, Paolo
By organisation
Photonics (Closed 20120101)
Telecommunications

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 29 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf