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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and V. Chan
  • Vol. 3, Iss. 6 — Jun. 1, 2011
  • pp: 522–532

Optimal Wavelength Scheduling for Hybrid WDM/TDM Passive Optical Networks

Chonggang Wang, Wei Wei, Weiyi Zhang, Hongbo Jiang, Chunming Qiao, and Ting Wang  »View Author Affiliations

Journal of Optical Communications and Networking, Vol. 3, Issue 6, pp. 522-532 (2011)

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This paper investigates upstream wavelength scheduling in hybrid wavelength division multiplexing and time division multiplexing passive optical networks (WDM/TDM PONs), where the minimum resource allocation unit is a time slot on a wavelength. First, WDM/TDM PONs of three types are introduced with the consideration of network and service evolution: 1) Type-I WDM/TDM PONs, where each optical network unit (ONU) has a single optical transmitter with a tunable wavelength; 2) Type-II WDM/TDM PONs, where each ONU still has a single transmitter, but some are fixed to transmit at a certain wavelength; and 3) Type-III WDM/TDM PONs, where each ONU has one or more transmitters and all transmitters can tune their wavelengths. We propose three periodic lightweight optimal wavelength scheduling algorithms for the three kinds of WDM/TDM PONs. Simulation-based performance evaluation demonstrates that the proposed algorithms lead to optimal schedule length with the minimum number of wasted time slots and in turn achieve the maximum wavelength/channel utilization.

© 2011 OSA

OCIS Codes
(200.0200) Optics in computing : Optics in computing
(060.1155) Fiber optics and optical communications : All-optical networks

ToC Category:
Research Papers

Original Manuscript: February 2, 2011
Revised Manuscript: April 25, 2011
Manuscript Accepted: May 10, 2011
Published: May 26, 2011

Chonggang Wang, Wei Wei, Weiyi Zhang, Hongbo Jiang, Chunming Qiao, and Ting Wang, "Optimal Wavelength Scheduling for Hybrid WDM/TDM Passive Optical Networks," J. Opt. Commun. Netw. 3, 522-532 (2011)

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