摘要
It is shown that a ring topology is better than a star topology for an optical-code-division multiple access ( OCDMA) network as an optical metropolitan or local area network in terms of security and capacity. Each node in an OCDMA ring network requires an OCDMA add/drop multiplexer. We present what we believe to be a novel OCDMA add/drop multiplexer that can simultaneously add and drop multiple code channels, and a proof-of-feasibility experiment is demonstrated. An OCDMA ring may also adapt code channels for time domain multiplexing and other digital signal transmission systems. An experiment for the synchronized digital hierarchy ( SDH) signal over a OCDMA link is demonstrated.
- 出版日期2007-8-1
- 单位浙江大学