Based on a new practical optical packet buffering method, a new Optical Packet Switching node structure is designed by us. This new node structure greatly reduces the complexity of the already-existing node structures by omiting the slot-selection stage.

We propose a new idea of utilizing Multiple Electromagnetically Induced Transparency Concurrence within a Single Medium to fullfill optical packet buffering and theoretically design a Wavelength Division Multiplexing (WDM) Random Access Memory (RAM).

研究了一个监控信道方案，用于WDM+EDFA光纤通信系统在线光纤大器远程监控，并成功地实现了其演示系统。对该方案的实际可行性进行了论证。

本文从理论上推导了“WDM+EDFA”系统中受激拉曼散射（SRS）的表达形式，并分析了影响受激拉曼散射的因素，得出“WDM+EDFA”系统中拉曼散射的影响与光纤放大器的配置关系极大的结论。进而给出了几种常用配置下受激拉曼散射限制的传输距离和光纤放大器数目的上限。

Although routing schemes based on global knowledge make most optimal routing decisions, they will occupy many resources to keep the state information of the network up-to-date. In tiffs work, we describe a fuzzy least-congested path (FLCP) routing algorlitm based on hierarchical liformation. Simulation shows that the blocking probability using FLCP is very near to the blocking probability using the least-congested path routing (LCP) algorittm based on global information. Under heavy traffic load, the FLCP alg orlihm is superior to the exhaustive algorittm (EA) and the LCP algorittm with unit information cost. The FLCP algorlitm provides better routing, even withincomplete information. Thus, the algorlitm requires less information of the network, particularly under heavy traffic load. In addition, an improved remote-path routing approach is provided to reduce the blocking probability of connection requests to a node that is many hops away from the source node.