Optical CDMA for all-optical sub-wavelength switching in core GMPLS networks

Tamer Khattab, Hussein Alnuweiri

Research output: Contribution to journalArticle

15 Citations (Scopus)


Generalized multi-protocol label switching (GMPLS) is a multipurpose control-plane paradigm that extends the MPLS scheme allowing switching without recognizing packet boundaries. In this paper, we present a novel extension that exploits a new physical layer for switching in optical GMPLS. The proposed extension is achieved through adding an optical code switching layer, or code switch capable (CSC) layer, to the existing label mapping layers. Our proposal enables finer granularity at sub-wavelength level in all-optical GMPLS core switches, resulting in significant enhancements to traffic isolation capabilities for all-optical GMPLS core switches. We employ mathematical analysis to derive performance bounds for the proposed scheme, from both the labeling capacity and network throughput points of view. We use our analytical model to derive several optimum operating points for the network, and show that our techniques significantly improve the overall performance of all-optical core networks

Original languageEnglish
Article number4211229
Pages (from-to)905-921
Number of pages17
JournalIEEE Journal on Selected Areas in Communications
Issue number5
Publication statusPublished - 1 Jun 2007
Externally publishedYes



  • Optical CDMA
  • Performance analysis
  • Photonic label
  • Photonic network

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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