AWG波長多重・分離による光バーストスイッチング・ノードの透明性の変化(フォトニックネットワーク制御・設計,一般)

概要

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In this paper, we discuss the transparency of optical burst switching (OBS) nodes, which is their ability to forward the optical data with minimum degradation. In order to decrease costs of OBS networks, we propose to share regenerators among the different wavelength channels. The number of required regenerators can thus be reduced if the transparency of each node is carefully optimized. Transparency of an OBS node architecture is investigated by 40Gb/s-transmission simulations. Flat-top AWGs are shown to provide superior filter concatenation performance, and to allow cascading up to 9 nodes while maintaining a Q-factor larger than 15.6dB. We also show that the chromatic dispersion of AWGs is accumulated during cascading through several nodes, which makes preferable a hop-by-hop dispersion compensation scheme.
社団法人電子情報通信学会の論文
2004-08-13