Commercial 100-Gbit/s Coherent Transmission Systems
Tiejun J. Xia and Glenn A. Wellbrock, Verizon, Richardson, TX, USA
2.1 Introduction
An optical transmission system is a part of the transport layer in a service provider’s network. The transmission system carries information on optical channels, which have certain protocols, such as SONET or OTN containers to encapsulate the user data and provide network management functions. The optical channels are carried across the network via an optical fiber infrastructure. The channel capacity, which governs how much information a channel is able to carry across the network in a unit time, and the number of channels in a strand of fiber determine the total transmission capacity a fiber link ...
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