The Research on Monitoring Technologies for Optical Networks
Date Issued
2010
Date
2010
Author(s)
Jong, Kuo-Chin
Abstract
For the transmissions in fiber-optic backbone networks, it is susceptible to the degradation of optical signal-to-noise ratio and dispersion due to the long transmission distance and high data rate. In tree-type fiber-optic access networks, a traditional optical time-domain is unable to distinguish the fault branch because of the network topology. In order to maintain service quality in fiber-optic networks, an easily-operated and reliable monitoring system is necessary.
The topic of this thesis is focus on monitoring technologies in fiber-optic networks, including (1) eye diagram monitoring and (2) fault branch detection. The former contains asynchronous eye diagram monitoring that can be adopted in amplitude-modulated and coherent optical communication systems. The burst mode eye diagram monitoring method for passive optical networks is also present in this thesis. Because the detection scheme using interferometric devices can detect the fault branch in a tree-type optical network, we derive the analytical expression related to this scheme and analyze the length tolerance of interferometric devices by using the Monte-Carlo simulation method.
Subjects
Performance monitoring
asynchronous sampling
phase portrait
interferometric device
Monte-Carlo method
Type
thesis
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