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All-optical networking concept promises an information transfer rate of terabits per seconds by requiring that no optoelectronic conversion occurs within the network, but only to its periphery. The most critical issue in the realization of such a network is how the resources will be shared among users, each requiring only a small portion of the total bandwidth. Multiple access schemes that are concurrent in nature, such as wavelength, time, and code division multiple access (WDMA, TDMA, and CDMA) are natural candidates for channel access in all-optical networks.
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