• Title : Architecture design and performance evaluation of OCDM-based multi-granularity optical networkss
• Authors : Shaowei Huang, Ken-ichi Baba, Masayuki Murata, and Ken-ichi Kitayama
• Journal : Journal of Optical Networking, 2006.
• Abstract : With progresses in optical code divison multiplexin (OCDM) technology, it becomes practically feasible to accommodate multiple channels in a single wavelength. In our paper, on the basis of this OCDM technology, we first propose an OCDM-based multi-granularity optical crossconnect (MG-OXC), and a novel labels switched path called OCDM-LSP. Such an OCDM-LSP is capable of provisioning bandwidth granularity finer than the wavelength path in WDM networks, and leads to wavelength/optical code-based multi-granularity optical network. Furthermore, aiming to achieve switching OCDM-LSP, an OXC architecture called WDM-OCDM-OXC is also designed. In this OCDM-based WDM networks, OCDM-LSPs with distinct optical codes (OCs) can be established asynchronously and discriminatedly by optical correlation. It is regarded as quite a novel approach to resolve granularity problem, compared to the Packet-LSP or TDM-LSP. Based upon our proposal, switching for different granular traffic of F-LSP, WB-LSP, L-LSP and OCDM-LSP can be performed all in optical domain in transport layer. Simulation os conducted and the results show that OCDM-LSP significantly reduces blocking probability even though only 5 OCs are employed.

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