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Proceedings Paper

Design of hierarchical WDM networks
Author(s): Miguel Razo; Shreejith Billenahalli; Wanjun Huang; Arularasi Sivasankaran; Limin Tang; Hars Vardhan; Marco Tacca; Andrea Fumagalli; Paolo Monti; Young Lee; Xinchao Liu; Zhicheng Sui
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Paper Abstract

Hierarchical (multi-core) Wavelength Division Multiplexing (WDM) networks present a challenging design problem to the network designer who wishes to establish all-optical circuits end-to-end and across multiple network cores. Due to the nature of the hierarchical structure and its traffic distribution, it is likely that the inner core requires more capacity when compared to the capacity required by the metro cores, which are individually connected to the inner core. This capacity mismatch cannot be addressed by assigning distinct transmission rates to each core, as this solution would result in using electronic time division add-drop multiplexer to interconnect the traffic across cores with distinct rates. An alternative solution to addressing the capacity mismatch betweenWDM metro and inner core is explored in this paper, which is based on a limited number of wavelengths (a subset of the full set) being used in the metro core, when compared to the full set of wavelengths being used in the inner core. Two available architectures are presented in the paper, discussing their respective advantages and disadvantages.

Paper Details

Date Published: 19 November 2009
PDF: 8 pages
Proc. SPIE 7633, Network Architectures, Management, and Applications VII, 76331I (19 November 2009); doi: 10.1117/12.852299
Show Author Affiliations
Miguel Razo, The Univ. of Texas at Dallas (United States)
Shreejith Billenahalli, The Univ. of Texas at Dallas (United States)
Wanjun Huang, The Univ. of Texas at Dallas (United States)
Arularasi Sivasankaran, The Univ. of Texas at Dallas (United States)
Limin Tang, The Univ. of Texas at Dallas (United States)
Hars Vardhan, The Univ. of Texas at Dallas (United States)
Marco Tacca, The Univ. of Texas at Dallas (United States)
Andrea Fumagalli, The Univ. of Texas at Dallas (United States)
Paolo Monti, KTH Royal Institute of Technology (Sweden)
Young Lee, Huawei Technologies (United States)
Xinchao Liu, Huawei Technologies (United States)
Zhicheng Sui, Huawei Technologies (United States)


Published in SPIE Proceedings Vol. 7633:
Network Architectures, Management, and Applications VII
Ken-ichi Sato; Lena Wosinska; Jing Wu; Yuefeng Ji, Editor(s)

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