相干探测带内标记交换系统传输特性的研究
发布时间：2018-11-07 16:56
【摘要】：随着21世纪网络的快速发展,光纤通信已成为现代通信网中非常重要的组成部分,该领域研究的下一个目标是大容量、高宽带的全光网(AON)。当前的光网络在长距离传输的情况下需要光中继器。光中继器和光交换节点中的处理过程称为“光-电-光”(OEO)的过程。OEO过程限制了OTN的传输速度,这使得人们急需找到新的方法来实现传输速率更高的光网络。光标记交换(OLS)是一个有前景的解决方案。它使用光学标记携带路由信息而不是电子标记。有效净荷携带数据,而标记携带路由信息。故本文以光标记交换传输为研究对象,深入分析相干探测带内标记系统,构建了40 Gb/s ASK/ASK和40 Gb/s DPSK/ASK带内标记交换系统的传输模型,并基于软件VPI transmission maker 8.3实现仿真工作。论文的内容包括:(1)介绍本文的研究背景和光标记技术及其发展现状。(2)介绍了光调制和解调技术。对搭建相干探测光标记交换技术系统中用到的光调制基本格式—ASK、PSK,光调制关键器件—马赫-曾德尔调制器进行了研究分析。另外,重点介绍了在接收端的两种解调技术,直接解调和相干解调。(3)具体研究了单节点相干探测带内光标记系统。将上述分析的光调制格式ASK和DPSK引入到光标记交换系统中,作为系统发送端的载波调制格式。分别搭建了40 Gb/s ASK/ASK和40 Gb/s DPSK/ASK带内光标记交换仿真系统,优化系统参数,分析了各器件对带内光标记交换系统产生的影响,最后分析了系统的传输性能。(4)改进了现有的单节点带内标记系统结构,基于标记栈路由原理,具体分析了40 Gb/s ASK/ASK和40 Gb/s DPSK/ASK多节点带内标记交换系统。仿真分析了系统中各器件对多节点标记交换系统的影响,包括激光器线宽、光滤波器带宽、传输距离的影响等。最终,根据优化后的参数,验证了多节点带内标记交换系统的最佳传输性能。
[Abstract]:With the rapid development of network in the 21st century, optical fiber communication has become a very important part of modern communication network. The next goal of the research in this field is the all-optical network (AON). With large capacity and high bandwidth. Current optical networks require optical repeaters for long distance transmission. The processing process in optical repeater and optical switching node is called "optical-electric-optical" (OEO). The OEO process limits the transmission speed of OTN, which makes it urgent to find new methods to realize the optical network with higher transmission rate. Optical label switching (OLS) is a promising solution. It uses optical tags to carry routing information rather than electronic tags. Valid payload carries data while marking carries routing information. In this paper, the optical label switching transmission is taken as the research object, the coherent detection in-band marking system is deeply analyzed, and the transmission models of 40 Gb/s ASK/ASK and 40 Gb/s DPSK/ASK in-band label switching systems are constructed. And based on the software VPI transmission maker 8.3 to achieve the simulation work. The main contents of this paper are as follows: (1) introduce the research background, optical marking technology and its development status; (2) introduce the optical modulation and demodulation technology. The basic format of optical modulation used in coherent detection optical label switching system-ASK,PSK, optical modulation key device-Mach-Zehnder modulator is studied and analyzed. In addition, two kinds of demodulation techniques in the receiver, direct demodulation and coherent demodulation, are introduced. (3) the single-node coherent detection in-band optical label system is studied in detail. The optical modulation schemes ASK and DPSK are introduced into the optical label switching system as the carrier modulation format of the system transmitter. The 40 Gb/s ASK/ASK and 40 Gb/s DPSK/ASK in-band optical label switching simulation systems are built, the system parameters are optimized, and the influence of each device on the in-band optical label switching system is analyzed. Finally, the transmission performance of the system is analyzed. (4) the existing single-node in-band label system architecture is improved. Based on the label stack routing principle, 40 Gb/s ASK/ASK and 40 Gb/s DPSK/ASK multi-node in-band label switching systems are analyzed in detail. The effects of various devices on the multi-node label switching system are simulated and analyzed, including the influence of the laser linewidth, the bandwidth of the optical filter, the transmission distance, and so on. Finally, according to the optimized parameters, the optimal transmission performance of multi-node in-band label switching system is verified.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN929.1
本文编号：2316977
[Abstract]:With the rapid development of network in the 21st century, optical fiber communication has become a very important part of modern communication network. The next goal of the research in this field is the all-optical network (AON). With large capacity and high bandwidth. Current optical networks require optical repeaters for long distance transmission. The processing process in optical repeater and optical switching node is called "optical-electric-optical" (OEO). The OEO process limits the transmission speed of OTN, which makes it urgent to find new methods to realize the optical network with higher transmission rate. Optical label switching (OLS) is a promising solution. It uses optical tags to carry routing information rather than electronic tags. Valid payload carries data while marking carries routing information. In this paper, the optical label switching transmission is taken as the research object, the coherent detection in-band marking system is deeply analyzed, and the transmission models of 40 Gb/s ASK/ASK and 40 Gb/s DPSK/ASK in-band label switching systems are constructed. And based on the software VPI transmission maker 8.3 to achieve the simulation work. The main contents of this paper are as follows: (1) introduce the research background, optical marking technology and its development status; (2) introduce the optical modulation and demodulation technology. The basic format of optical modulation used in coherent detection optical label switching system-ASK,PSK, optical modulation key device-Mach-Zehnder modulator is studied and analyzed. In addition, two kinds of demodulation techniques in the receiver, direct demodulation and coherent demodulation, are introduced. (3) the single-node coherent detection in-band optical label system is studied in detail. The optical modulation schemes ASK and DPSK are introduced into the optical label switching system as the carrier modulation format of the system transmitter. The 40 Gb/s ASK/ASK and 40 Gb/s DPSK/ASK in-band optical label switching simulation systems are built, the system parameters are optimized, and the influence of each device on the in-band optical label switching system is analyzed. Finally, the transmission performance of the system is analyzed. (4) the existing single-node in-band label system architecture is improved. Based on the label stack routing principle, 40 Gb/s ASK/ASK and 40 Gb/s DPSK/ASK multi-node in-band label switching systems are analyzed in detail. The effects of various devices on the multi-node label switching system are simulated and analyzed, including the influence of the laser linewidth, the bandwidth of the optical filter, the transmission distance, and so on. Finally, according to the optimized parameters, the optimal transmission performance of multi-node in-band label switching system is verified.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN929.1
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