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15 April 2004 Lasing cycles in WDM optical networks based on wavelength routing
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Proceedings Volume 5282, Network Architectures, Management, and Applications; (2004)
Event: Asia-Pacific Optical and Wireless Communications, 2003, Wuhan, China
Closed all-optical cycles in wavelength division multiplexing (WDM) optical networks may generate lasing resulting in adverse effects to network performance. In this paper, causes and physical conditions for both all-optical idle cycles and all-optical leakage cycles are analyzed by using optical spectrum of the network. A five-node experimental optical network is built. Multiple lasing peaks are observed to co-exist and compete in a fiber. Affects of the filtering characteristic mismatch of optical nodes to all-optical lasing cycles are discussed. We point out that multiple closed leakage cycles may occur in one optical channel in the case of bandwidth mismatch. Two lasing peaks of leakage cycles are observed in one channel and they can co-exist with the signal wavelength. Finally, harms of lasing cycles are discussed and methods are proposed for eliminating them.
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Zhigen Xu, Bingkun Zhou, Hanyi Zhang, Yanhe Li, Yili Guo, and Xiaoping Zheng "Lasing cycles in WDM optical networks based on wavelength routing", Proc. SPIE 5282, Network Architectures, Management, and Applications, (15 April 2004);

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