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19 November 2009 Design of hierarchical WDM networks
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Proceedings Volume 7633, Network Architectures, Management, and Applications VII; 76331I (2009)
Event: Asia Communications and Photonics, 2009, Shanghai, Shanghai , China
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.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Miguel Razo, Shreejith Billenahalli, Wanjun Huang, Arularasi Sivasankaran, Limin Tang, Hars Vardhan, Marco Tacca, Andrea Fumagalli, Paolo Monti, Young Lee, Xinchao Liu, and Zhicheng Sui "Design of hierarchical WDM networks", Proc. SPIE 7633, Network Architectures, Management, and Applications VII, 76331I (19 November 2009);

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