基于远程差频检测的波分复用OFDM-PON关键技术的研究

项目名称： 基于远程差频检测的波分复用OFDM-PON关键技术的研究

项目编号： No.61271216

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 肖石林

作者单位： 上海交通大学

项目金额： 80万元

中文摘要： 为顺应三网融合加快、接入网服务扩展的趋势，满足用户对大容量、高速率及长距离信息传送的需求，本项目提出一种基于远程差频检测的波分复用OFDM-PON(正交频分复用无源光网络)"RHDWDM-OFDM-PON"。系统采用OFDM和WDM复用方式增大传输容量，采用差频检测增加传输距离。下行方向为外差检测，上行方向为自零差检测，设计了相应的载波抑制双光源产生方式、单偏振光注入锁定的多波长共享机制和直调激光器的啁啾与色散抑制方案以及自零差相干接收机，使网络中的上下行接收灵敏度和数据速率都可以得到极大提高。提出了新颖的多粒度资源调度方式，能够有效地分配波长、时隙、子载波和传输电平数，提高网络资源利用率。本项目将在已开展的PON相关技术研究基础上，探索和验证RHDWDM-OFDM-PON 的关键技术，发展一种传输速率高、覆盖范围大且成本较低的接入网解决方案，推动下一代新型光接入网技术的研发和应用。

中文关键词： 光通信接入；无源光网络；正交频分复用；波分复用；差频检测

英文摘要： Recently, the giant boost of the access network applications such as triple play and broadband services has pushed the capacity of existing Passive Optical Network (PON) to its limit. In order to meet the demands of large bandwith, high bitrate , long reach transmission, etc, a novel access architecture named RHDWDM-OFDM-PON (Remote Heterodyne Detection Wavelength Division Multiplexing-Orthogonal Frequency Division Multiplexing- Passive Optical Network) is proposed in this project. In this system, OFDM technique is combined with the WDM to increase the transmission capacity. Remote Heterodyne and Self Homodyne schemes are utilized in downstream and upstream detection respectively, so that the receiver sensitivity of both transmission directions can be significantly increased. The critical technologies adopted in this project are showed as follows. For downsteam transmission, transmitter based on Double-SideBand Suppressed Carrier (DSB-SC) generation mechanism is utilized at Optical Line Terminal (OLT) in order to provide the double light source for Remote Heterodyne detection at Optical Network Unit (ONU). In upstream direction, multi-wavelength shared scheme based on single polarization light injection locking technique is proposed to eliminate the laser source in ONU. Chirp and dispersion suppression tech

英文关键词： Optical Communication Access；Passive Optical Network (PON)；Orthogonal Frequency Division Multiplexing (OFDM)；Wavelength Division Multiplexing (WDM)；Heterodyne Detection