基于反射滤波器实现载波重用无源光网络设计  

SCM/WDM-PON Design based on Reflection Filter for Carrier Reuse

作　　者：狄晗 陈新桥[1] 刘晓蕊 霍恺丽 DI Han;CHEN Xin-qiao;LIU Xiao-rui;HUO Kai-li(School of Information and Communication Engineering,Communication University of China,Beijing 100024,China;School of Data Science and Intelligent Media,Communication University of China,Beijing 100024,China)

机构地区：[1]中国传媒大学信息与通信工程学院,北京100024 [2]中国传媒大学数据科学与智能媒体学院,北京100024

出　　处：《光通信研究》2021年第5期31-35,共5页Study on Optical Communications

基　　金：国家重点研发计划资助项目(2018YFB1404101)。

摘　　要：载波重用技术是降低无源光网络(PON)成本的一种重要方法,也是提高PON传输容量的主要方法。文章设计了一种PON系统结构,系统采用了副载波重用(SCM)和波分复用(WDM)的联合复用技术,极大地提高了PON的传输容量。在系统中采用无源反射滤波器实现载波重用,极大地降低了系统成本。文章采用Optisystem光子模拟软件搭建出了基于反射滤波器实现载波重用的SCM/WDM-PON系统结构,SCM采用3和6 GHz作为射频副载波,WDM采用范围为193.1~194.5 THz、波长间隔为200 GHz的8个波长为光载波,用户上下行传输的数据速率为1 Gbit/s。文章还研究了反射滤波器的反射系数、光载波功率和传输距离对上下行数据传输性能的影响,得到了当反射滤波器的反射系数为97%、光载波功率为5 dBm和传输距离<27.2 km时,系统总体性能最优的结论。Carrier reuse technology is an important method to reduce the cost of Passive Optical Networks(PON)and multiplexing technology is the main method to improve the transmission capacity of PON.A PON system is designed in this paper.By combing the Subcarrier Multiplexing(SCM)and Wavelength Division Multiplexing(WDM)technology,the transmission capacity of PON is increased significantly.The passive reflection filter is used in the system to realize carrier reuse,which greatly reduces the system cost.In the SCM/WDM-PON system,the carrier reuse is achieved by the reflection filter,which is built in the Optisystem software.Using 3 and 6 GHz radio frequency signals as subcarriers in the SCM system,8 wavelengths signal with a wavelength interval of 200 GHz ranging from 193.1~194.5 THz are used as optical carriers in WDM,and the data rate of users for uplink and downlink transmission is 1 Gbit/s.The effects of the reflection coefficient,optical carrier power and transmission distance on uplink and downlink data transmission performance are studied.When the reflection coefficient of the reflection filter is 97%,the overall system performance is optimal with the optical carrier power of 5 dBm and the transmission distance less than 27.2 km.

关 键 词：无源光网络 副载波重用 波分复用 载波重用 反射滤波器 

分 类 号：TN915[电子电信—通信与信息系统]