Combining IP with WDM is an attractive direction for research. WDM will play an impor-tant role in IP network in future. Now, an urgent problem is how to introduce wavelength routing in an IP network. We solve this problem by designing IP wavelength router, implementing DPDP (default path and dedicated path) method. We prove the reasonableness and feasibility of this design by a prin-ciple experiment. A lot of problems related to this design are also discussed.

在光纤WDM通信系统或WDM网络，渡长控制是十分必要的，本文讨论了使用法布里一珀洛（FP）揩振腔作为波长控制器件，在考虑频道间串扰的情况下，波长控制的计算理论，对一频道间隔200GHz，16路信道，调制码率为2.488Gb/s的WDM系统的波长控制精度问题进行了计算和比较。

本文运用随机信号的分析方法推导了存在ASE噪声情况下，光纤通信系统误码率的计算公式。利用该式可以根据信号光功率和噪声功率谱密度估算系统的误码率。与实验结果基本符合，从而可以为加光纤放大器的光纤通信系统提供评价信道优，劣的依据。本文还论述了ASE噪声对PIN接收机灵敏度的影响，对于实际系统中接收机的选择具有重要意义。

提出了一种完全不同于传统单谐振环结构的双谐振环光纤陀螺结构。对照传统单谐振环结构分析了该结构方案所具有的显著特点和重要价值，同时通过详尽的公式推导和计算，给出了带焊接点谐振环和不带焊接点谐振环各自的谐振条件和谐振输出特性。

In this paper we propose a new protocol called trine-space label switching protocol (TSL-SP) in optical burst switching (OBS), and define the terms time-space label (TSL) and time-space routing (TSR). An important concept of response time is introduced ha the trine label mechanism. The TSL-SP is a new technology that can quickly and efficiently forward data with a label on the optical networks. A two-dimension label switched path (TD-LSP) can be set up, that is maintained and deleted by the TSL-SP For clearly illuminating the operation principles of the TSL-SR we propose a new approach of orthogonal trine-space coordinates in which the vertical coordinate is the space label and the horizontal coordinate is the time label. The proposed TD-LSP can tramatically reduce the routing failure probability and greatly improve the link network efficiency compared with other signaling protocols. Moreover, we define the time-space label control plane that can achieve the higher efficiency. When the TSL-SP is applied to networks, switching performance can be improved by two orders compareal to the switching performance with the conventional OBS signaling protocols. The fundamental goal of TSL-SP is to band the signaling and routing functions together closely. Also, the TSL-SP can reduce the complexity of the network, support automatic service offering, and provide traffic engineering.