The FTΛ-FRΛ AWG network: A practical single-hop metro WDM network for efficient uni- and multicasting

Chun Fan, Stefan Adams, Martin Reisslein

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Single-hop wavelength-division-multiplexed (WDM) networks with a central passive star coupler (PSC), as well as single-hop networks with a central arrayed-waveguide grating (AWG) and a single transceiver at each node, have been extensively studied as solutions for the quickly increasing amounts of unicast and multicast traffic in the metropolitan area. The main bottle-necks of these networks are the lack of spatial wavelength reuse in the studied PSC-based networks and the single transceiver in the studied AWG-based metro WDM networks. This paper describes the development and evaluation of the FTΛ- FRΛ AWG network, which is based on a central AWG and has arrays of fixed-tuned transmitters and receivers at each node. Transceiver arrays are a mature technology, making the proposed network practical. In addition, the transmitter arrays allow for high-speed signaling over the AWG while the receiver arrays relieve the receiver bottleneck arising from multicasting in conjunction with spatial wavelength reuse on the AWG. The results from probabilistic analysis and simulation reported here indicate that the FTΛ- FRΛ AWG network gives particularly good throughput-delay performance for a mix of unicast and multicast traffic.

Original languageEnglish (US)
Article number1416989
Pages (from-to)937-954
Number of pages18
JournalJournal of Lightwave Technology
Issue number3
StatePublished - Mar 2005


  • Arrayed-waveguide grating (AWG)
  • Medium access control
  • Multicast
  • Single-hop network
  • Throughput-delay performance
  • Transceiver array

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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