October 2007
Intermediate to advanced
368 pages
10h 55m
English
Content preview from Passive Optical Networks
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4.2 PON SYSTEM REQUIREMENTS
The performance characteristics of a conventional TDM-PON system is
defined by the feeder bandwidth it provides, its bandwidth efficiency, splitter
ratio, and the differential reach it supports. This section discusses the physical
layer specifications and requirements that PON transceivers need to comply
with.
4.2.1 PON System Power Budgets and Specifications
Table 4.1 lists the split ratios and power budgets for three PON types. BPON
supports 16 or 32 ONUs and dynamic upstream bandwidth allocation [8]. Both
BPON and G-PON adopted the three classes (A, B, C) of ITU-T G.982-specified
power budgets, i.e. 20, 25, and 30 dB between ...
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