Optical Coarse Packet-Switched IP-over-WDM network (OPSINET): Technologies and experiments

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

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


Optical Packet Switching (OPS) has been envisioned as a prominent future optical networking technology for datacentric 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 packetloss performance and differentiated services. 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), and is facilitated with an out-of-band Generalized Multi-protocol Label Switching (GMPLS) control network. 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, OLSRs, and GMPLS control.

Original languageEnglish
Article number1677259
Pages (from-to)117-127
Number of pages11
JournalIEEE Journal on Selected Areas in Communications
Issue number8 SUPPL.
StatePublished - 1 Aug 2006


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


Dive into the research topics of 'Optical Coarse Packet-Switched IP-over-WDM network (OPSINET): Technologies and experiments'. Together they form a unique fingerprint.

Cite this