可调激光器是WD M光网络系统的理想光源，同时可以用作光分组交换网络结构器件、接入网波长路由器等方面，是当今光通信技术的研究热点之一。
Tunable Laser is an ideal optical source in WDM optical networks. It is important components in optical Packet Switching and it is also used in router of access networks.
作为自动交换光网络中的核心器件，全光波长转换器在网络中发挥着重要作用。
AS a key device in ASON (automatic switched optical networks), the study on all optical wavelength converters is becoming a very important project.
重点介绍了波分复用(WDM)光纤网络的特点、通过选择光波长实现光交换的原理、WDM星形和环形光网络的构成等。
The emphasis is on the characteristics of WDM fiber optic network, the principle of optical switching by selecting wavelength. At last the WDM star and ring networks are addressed as an example.
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