摘要
在光网络中同时输入多个波长时,由于在网络链路中的网络节点是有限的,多个波长会竞争同一个输出端口,从而使通信网络受阻。在碲基拉曼波长转换器放置率为50%时,将其应用在20×20 Mesh-Torus网络中,并对网络阻塞率进行分析。利用伯努利-泊松-帕斯卡(BPP)网络模型仿真分析了碲基波长转换器的输入波长数S以及转换度d对Mesh-Torus网络阻塞性能的影响。结果表明:当d相同、S=4时,阻塞率为0.088～0.0945,S=6时,阻塞率为0.0960～0.0995,由此说明S的增加会减缓网络受阻的时间,使阻塞率增长较慢;当S相同、d增加时,阻塞率在原来的基础上约降低0.0005～0.004。因此,在Mesh-Torus网络中使用碲基波长转换器降低网络阻塞率是可行的。
Due to the limited network nodes in the optical network link, the multiple wavelengths simultaneously inputted in network compete for the same output port and thus the communication network is made obstructed. Thus a Te-based Raman wavelength converter is applied to the 20×20 Mesh-Torus network when its placement rate is 50%, and its influence on the network blocking rate performance is analyzed. With the Bernoulli-Poisson-Pascal(BPP)network model, the effects of input wavelength number S and degree of conversion d of the Te-based wavelength converter on the blocking performances of the Mesh-Torus network are simulated and analyzed. The results show that when d is fixed, the variance of blocking rate is within 0.088-0.0945 for S=4 and within 0.0960-0.0995 for S=6, indicating that the increase of S slows down the blocking of network communication and the blocking rate increases slowly. In contrast, when S is fixed and with the increase of d, the blocking rate decreases approximately by 0.0005-0.004 on the original basis. Therefore, it is feasible to reduce the blocking rate of the Mesh-Torus network with a Te-based wavelength converter.
作者
巩稼民
蔡庆
侯玉洁
任帆
Gong Jiamin;Cai Qing;Hou Yujie;Ren Fan(School of Electronics Engineering,Xi 'an University of Posts and Telecommunications,Xi'an,Shaanxi 710121,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2018年第12期149-154,共6页
Laser & Optoelectronics Progress
基金
国家自然科学基金(61775180)
关键词
光通信
全光网络
Mesh-Torus阻塞率
输入波长数
转换度
optical communications
all optical network
Mesh-Torus blocking rate
input wavelength number
degree of conversion
