Optical coarse Packet-Switched IP-over-WDM Network (OPSINET): Technologies and experiments

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

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


Optical Packet Switching (OPS) has been envisioned as a prominent future optical networking technology for data-centric IP over Wavelength Division Multiplexing (WDM) networks, or optical Internet. Such OPS technology however raises significant transport and Quality of Service (QoS) challenges due to technological limitations. To circumvent OPS limitations, we have proposed a new Optical Coarse Packet Switching (OCPS) paradigm, which uses in-band-controlled per-burst switching and advocates traffic control enforcement to achieve high bandwidth utilization and Quality-of-Service (QoS). Based on OCPS, we have constructed an experimental IP-over-WDM network, referred to as OPSINET. OPSINET consists of two major types of nodes- edge routers, and Optical Label Switched Routers (OLSRs). In this paper, we first introduce the OCPS paradigm. We then present the architecture of OPSINET, describe the in-band header/payload modulation technique, and detail the operations of the edge routers and OLSRs.

Original languageEnglish
Article number101
Pages (from-to)682-691
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
Issue numberPART 2
StatePublished - 1 Jun 2005
EventOptical Transmission, Switching, and Subsystems II - Beijing, China
Duration: 9 Nov 200411 Nov 2004


  • IP-over-Wavelength Division Multiplexing (WDM)
  • Optical Label Switched Routers (OLSRs)
  • Optical Packet Switching (OPS)
  • Quality of Service (QoS)


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