摘要
介绍了一种采用星型耦合器和阵列波导光栅构成的波长共享型复合WDM/TDM-PON光接入网系统,并针对该系统提出了一种防止上行信道中波长冲突的简单快速检测方法,采用硬件检测接收端光功率门限的方法,可以避免目前常用的OLT轮询ONU而导致传输信号的延迟,提高传输带宽。实验测试控制延迟在10ms内。
A novel wavelength-shared WDM-PON based on a star-shaped optical fiber couple and an array waveguide grating is proposed in this paper, along with is a kind of simple hardware collision test method for its upstream channels. The novel structure and method could reduce the date transportation delay comparing with the normal OLT controlling ONU method and could improve utilization rate of bandwidth. According to the experiment, the delay time is less then 10ms which is efficient and useful in the PON system.
出处
《光通信技术》
CSCD
北大核心
2008年第1期15-17,共3页
Optical Communication Technology
基金
国家自然科学基金项目(60772013)
华中科技大学科研基金(2006M041)
关键词
波分复用无源光网络
波长共享
星形耦合器
冲突检测
WDM-PON
wavelength-shared
Star-shaped optical fiber couple
hardware collision test
