Add/drop multiplexing and TDM signal transmission in an optical CDMA ring network

作者:Chen Biao*; Guo Changjian; Chen Jiajia; Zhang Linjian; Jiang Qiong; He Sailing
来源:Journal of Optical Networking, 2007, 6(8): 969-974.
DOI:10.1364/JON.6.000969

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.