An optical packet switch based on WDM technologies

Fow Sen Choa, X. Zhao, Xiuqin Yu, J. Lin, J. P. Zhang, Y. Gu, G. Ru, Guansong Zhang, Longjun Li, Huiping Xiang, Haldun Hadimioglu, H. Jonathan Chao

Research output: Contribution to journalArticle

Abstract

Dense wavelength-division multiplexing (DWDM) technology offers tremendous transmission capacity in optical fiber communications. However, switching and routing capacity lags behind the transmission capacity, since most of today's packet switches and routers are implemented using slower electronic components. Optical packet switches are one of the potential candidates to improve switching capacity to be comparable with optical transmission capacity. In this paper, we present an optically transparent asynchronous transfer mode (OPATM) switch that consists of a photonic front-end processor and a WDM switching fabric. A WDM loop memory is deployed as a multiported shared memory in the switching fabric. The photonic front-end processor performs the cell delineation, VPI/VCI overwriting, and cell synchronization functions in the optical domain under the control of electronic signals. The WDM switching fabric stores and forwards cells from each input port to one or more specific output ports determined by the electronic route controller. We have demonstrated with experiments the functions and capabilities of the front-end processor and the switching fabric at the header-processing rate of 2.5 Gb/s. Other than ATM, the switching architecture can be easily modified to apply to other types of fixed-length payload formats with different bit rates. Using this kind of photonic switch to route information, an optical network has the advantages of bit rate, wavelength, and signal-format transparencies. Within the transparency distance, the network is capable of handling a widely heterogeneous mix of traffic, including even analog signals.

Original languageEnglish (US)
Pages (from-to)994-1014
Number of pages21
JournalJournal of Lightwave Technology
Volume23
Issue number3
DOIs
StatePublished - Mar 2005

Fingerprint

Wavelength division multiplexing
switches
Switches
central processing units
asynchronous transfer mode
photonics
Transparency
Photonics
format
cells
routes
electronics
Data storage equipment
headers
Optical fiber communication
Dense wavelength division multiplexing
Optical switches
delineation
Asynchronous transfer mode
Automatic teller machines

Keywords

  • Cell delineation
  • Cell synchronization
  • Optical packet switch
  • Switching fabric
  • VPI/VCI overwrite
  • WDM loop memory

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

Cite this

An optical packet switch based on WDM technologies. / Choa, Fow Sen; Zhao, X.; Yu, Xiuqin; Lin, J.; Zhang, J. P.; Gu, Y.; Ru, G.; Zhang, Guansong; Li, Longjun; Xiang, Huiping; Hadimioglu, Haldun; Chao, H. Jonathan.

In: Journal of Lightwave Technology, Vol. 23, No. 3, 03.2005, p. 994-1014.

Research output: Contribution to journalArticle

Choa, FS, Zhao, X, Yu, X, Lin, J, Zhang, JP, Gu, Y, Ru, G, Zhang, G, Li, L, Xiang, H, Hadimioglu, H & Chao, HJ 2005, 'An optical packet switch based on WDM technologies', Journal of Lightwave Technology, vol. 23, no. 3, pp. 994-1014. https://doi.org/10.1109/JLT.2004.841459
Choa FS, Zhao X, Yu X, Lin J, Zhang JP, Gu Y et al. An optical packet switch based on WDM technologies. Journal of Lightwave Technology. 2005 Mar;23(3):994-1014. https://doi.org/10.1109/JLT.2004.841459
Choa, Fow Sen ; Zhao, X. ; Yu, Xiuqin ; Lin, J. ; Zhang, J. P. ; Gu, Y. ; Ru, G. ; Zhang, Guansong ; Li, Longjun ; Xiang, Huiping ; Hadimioglu, Haldun ; Chao, H. Jonathan. / An optical packet switch based on WDM technologies. In: Journal of Lightwave Technology. 2005 ; Vol. 23, No. 3. pp. 994-1014.
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