Two - segment distributed feedback ( dfb ) semiconductor lasers can achieve tuning with single longitudinal mode in a certain wavelength range ; at the same time , its superiority also includes bistablity and wavelength conversion 其中，两段式分布反馈( distributedfeedback ， dfb )半导体激光器可以在一定波长范围内实现单纵模、可调谐工作；同时，它还具有双稳、波长转换等功能。
The wavelength converter based on frsl has simple configuration . only signal light is essential at input port , and continuous wave used as pump light in other wavelength converters is not needed . besides , it is convenient to insert control components in the fiber ring cavity Frsl波长转换器结构简单，在输入端只需输入待转换的信号光，无须输入连续波作为泵浦光，并且易于在光纤环形腔中插入各种控制元件。
On the basis of rate equations of frsl , power characteristics and extinction ratio of the converted light are discussed . the relation between relaxation oscillation , small - signal modulation response , modulation bandwidth and the length of fiber ring cavity is analyzed also 根据frsl满足的单模速率方程，讨论了采用frsl进行波长转换时转换光的功率特性和消光比，以及frsl的弛豫振荡特性、小信号调制响应、调制带宽与光纤环形腔长度的关系。
In wavelength conversion based on four - wave mixing ( fwm ) in soa , balance efficiency can be obtained in larger range when increasing saturation power of the optical amplifier and decreasing the saturation power of spectral hole burning and carrier heating 而在基于soa的四波混频( fwm )波长转换中，在提高光放大器饱和功率的同时减小光谱烧孔( shb )和载流子加热( ch )饱和功率可有效提高较大频率间隔处的转换效率，并保持其在较大频率失谐范围内的效率均衡。
The present invention provides a wideband wavelength converter with four - wave - mixing , which includes a modulated laser diode , a modulator , a first and second polarized controller , a first , second and third tunable lasers , a optical coupler , a soa wavelength converter and a multiplexer 本发明系提出一种宽频四波混合波长转换装置，其包含调变雷射光源、光调变器、第一及第二极化控制器、第一、第二及第三可调式雷射、光耦合器、半导体光放大器、及一多工器。
The extended max - rwa problem is formulated as two integer linear programming ( ilp ) from the different viewpoint , and then solved using genetic algorithm and tabu - search algorithm respectively . a dynamic routing and wavelength assignment algorithm ( lcwa ) for limited - range wavelength conversions is proposed 从不同角度出发，给出了max - rwa问题的两个整数线性规划模型，随后分别使用遗传算法和禁忌搜索算法求解了波长转换范围受限条件下的静态max - rwa问题。
Based on many articles both at home and abroad , this paper analyses the blocking probability in wdm networks with limited - range wavelength conversion . firstly we introduce two new models named the independence model and the correlation model to analyse the blocking probability for the limited - range wavelength conversion network 本文在结合了国内外大量文献资料的分析方法和重要结论的基础上,首先针对wdm网络中节点具有部分波长转换能力时网络阻塞率的计算这个问题提出了两种新的理论分析模型? ?独立模型和关联模型,通过理论推导对网络阻塞率进行了分析,并结合仿真结果得出了一些重要的结论。
Secondly , optical nodes usually do not possess the ability of wavelength interchange for the restriction of cost and technology , optical network brings out so - called wavelength continuity constraint because connection must be established on the path that be carried by the same wavelength between source and destination nodes 再者，波长转换技术和成本限制使得网络节点一般没有波长转换能力，源目的节点间的通信连接必须始终承载在同一波长通道上，产生了所谓的波长连续性限制。
As the important components in wavelength routing optical networks , wavelength converters play an indispensable role in eliminating the wavelength continuity constraint , improving the reusability of wavelengths , enhancing the flexibility of the networks ; keeping compatibility when interconnecting the equipments provided by multi - vendors 波长转换器是波长路由光网络中的重要器件,它在解决交叉连接中的波长竞争和提高波长利用率,增强灵活性和可扩展性以及解决不同供应商提供的网络设备互连时存在的波长集合不兼容的问题等方面有着不可或缺的作用。
Simulations confirm compared with faa , the mdf can save more lrwcs and fewer packet loss probability , especially in the condition of high load . using mdf algorithm , the number of lrwcs in the condition of high load is more than in the condition of low load when the packet loss rate approaches to a fixed value 通过仿真实验验证了该算法在低、中和高负载情况下,比faa算法更节约波长转换器和更小的丢包率,而且在低负载时mdf算法的优势更加明显。 mdf算法在高负载下,丢包率到达稳定值所需要的lrwcs数目比低负载多。
