基于PolSK正交调制技术的TWDM-PON系统实现组播业务通信

摘要

A new method based on TWDM-PON system is proposed in this paper .Based on its original four communication wave-lengths based on ASK modulation , a separate PolSK modulation based communication channel is added .The channel can be used to transmit multicast data , enabling the ONU to achieve receiving unicast and multicast services in a single wavelength .The transmission efficiency and performance of TWDM-PON system can be improved by using this kind of method .%提出一种基于TWDM-PON系统的改造方案. 其实现方案是在其原有的4个基于ASK调制的通信波长上附加一个单独的基于PolSK调制的通信信道,并使用这个信道传输组播数据,使ONU能够实现在单个波长上同时接收单播和组播业务. 这种改造方案可以提高TWDM-PON系统的组播业务传输效率,提升系统整体的性价比.