SAB-1-9 Optical code-wavelength convertible OCDM/WDM networks

概要

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Optical code division multiplexing (OCDM) would be favorably applied not only to multiple access networks but also to transport networks. Virtual optical code path (VOCP), defined as the logical path determined by the optical code, has been proposed within a concept of OCDM networks. VOCP will potentially solve the problems of the wavelength path allocation caused by the shortage of wavelength resource, which may eventually limit the extent of future WDM networks. It is only natural that a fusion of OCDM and WDM leads to a concept of hybrid OCDM/WDM networks. As shown in Fig. 1, OCDM can be effectively overlayed onto the existing WDM transport networks. The optical code-wavelength conversion will be required at Node C to establish Optical path 5. This concept will become an alternative to dense WDM for evolving toward the advanced photonic networks. In this paper, the optical code-wavelength convertible OCDM/WDM transport network is studied. An architecture of OCDM/WDM crossconnect (XC) switch is proposed. The optical code-wavelength conversion is experimentally demonstrated at 1.24Gbit/s for the first time, which will serve as a basic function of the XC.
社団法人電子情報通信学会の論文
1999-03-08