A 10G QoS-enabled optical packet-switching system: Technology and experimentation

Steven S.W. Lee*, Maria C. Yuang, Po-Lung Tien, Yu Min Lin, Julin Shih, Jyehong Chen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


The paper presents the architecture and experimentation of a 10-Gb/s QoS-enabled almost-all-optical packet switching system (QOPS) for metro WDM networks. By applying cluster-based wavelength sharing and downsized single-staged optical buffers, QOPS is featured by its highly scalable and cost-effective design. In this paper, we first introduce the switch architecture, system operation, and the key techniques. We describe the in-band header/payload modulation and optical label swapping that is suitable for high-speed optical packet switching. We also present the design of the highly efficient Four-Wave Mixing wavelength converters for packet preemption. We then present an adaptive bifurcated routing (ABR) that directs same-connection packets to different switch clusters according to optimal bifurcation probabilities. Experimental and simulation results demonstrate that QOPS can achieve superior packet-loss performance, QoS differentiation, and minimize traffic blocking probability.

Original languageEnglish
Title of host publicationNetwork Architectures, Management, and Applications IV
StatePublished - 27 Dec 2006
EventNetwork Architectures, Management, and Applications IV - Gwangju, Korea, Republic of
Duration: 5 Sep 20067 Sep 2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6354 I
ISSN (Print)0277-786X


ConferenceNetwork Architectures, Management, and Applications IV
Country/TerritoryKorea, Republic of


  • Adaptive Bifurcating Routing (ABR)
  • Four-Wave Mixing (FWM)
  • Optical Label Switching (OLS)
  • Optical Packet Switching (OPS)
  • Quality of Service (QoS)
  • Superimposed Amplitude Shift Keying (SASk)


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