利用光注入分布布拉格反射激光二极管实现2.5Gbit／s的波长变换

给出利用光注入分布布拉格反射激光二极管实现２．５Ｇｂｉｔ／ｓ的波长变换的实验结果。本结果实用于超高速光通信。     

Robust wavelength division multiplexed local area networks

The wavelength division multiplexing (WDM) network architectures, in general, are based on transmitters and/or receivers that can be precisely and speedily tuned to predetermined, fixed wavelengths. These requirements are not easy to meet in practice. Robust WDM, the subject of this paper, has been introduced as a technique to implement WDM in the local area. The strength of this novel approach is that it does not rely on wavelength-sensitive devices that are required to perform with extreme stability. This paper describes the basis of this approach and presents two types of medium access control (MAC) protocols that are suitable for Robust WDM local area networks (LANs). The performance of networks based on these protocols is discussed in detail. It is shown that the new approach has considerable promise for WDM networks in the local area.     

WDM Fiber Replacement Scheduling

We consider the migration of a WDM telecommunication network to a new technology. In the course of the migration process, shared network resources must be temporarily shut down, affecting the network connections that use them. In this paper we describe an ILP-based approach to find a migration schedule that minimizes the total service disruption occurring in the network.     

Generic-II routing and wavelength assignment algorithm for a wavelength-routed WDM network

In this paper, we have developed a Generic routing and wavelength assignment algorithm (Generic RWA-II) which is used for the calculation of blocking probability of network. A simple mathematical model has also been proposed for the optimization and minimization of blocking probability. The implementation of the proposed model and algorithm has less complexity and the computation used in this model is quite efficient. This paper suggests an optimum path and assigns wavelength to that path, as a solution to routing and wavelength assignment problem to have least blocking probability. This model can be implemented on different network topologies. Further, the model is also used to evaluate the blocking performance of a 6-node simple network topology and hence used to improve its performance on the basis of blocking probability.     

IP/WDM网络的集成服务质量（QoS）控制方法

对IP/WDM网络的集成服务质量（QoS）控制技术问题做了研究,给出了基于通用多协议标记交换（GMPLS）技术的业务差分处理模型,设计了新的业务分类、光路分类以及层间映射/疏导/重构策略,给出了具体的映射技术方案.本方法具有三大特点：1）光电集成的差分服务模型;2）多粒度多优先级业务的自适应资源管理机制;3）支持电信级应用.该模型较好地折中了多种类型业务的QoS控制复杂性和有效性,具有较强的实用性和可扩展性,能够解决光因特网络中支持多媒体业务传送的QoS问题.     

案例库故障定位方法

采用对网管告警信息的分析和筛选,整理出和故障一一对应的告警案例的方法,提出了案例库故障定位方法,该方法加快了故障定位的速度,简化了故障定位的进程.此外,用于故障定位的案例库是开放的,可以很方便地加入、删除和修改具体的案例,使故障定位便于管理和维护.     

WDM网络保护容量问题的遗传算法求解

本文以遗传算法为基础,设计了一个与传统数学方法完全不同的遗传搜索寻优算法并提出一种简捷解编码方式,该编码能够极大地简化选择、交叉和变异等遗传算子的执行.仿真实验结果表明文章算法能够迅速地求出保护容量优化问题的全局近似最优解,且能够满足工程设计的要求.