Passive optical network structure with high fault tolerance
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United States of America Patent
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Oct 21, 1997
Grant Date -
N/A
app pub date -
May 17, 1994
filing date -
Dec 20, 1991
priority date (Note) -
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Abstract
Fault tolerant topology for passive optical networks essentially based on a 'tree configuration' with branch points or nodes (16, 17) made up of passive optical splitters, in which each node (16, 17) of a specific level is connected to the same number of nodes (16, 17) of the level immediately below by two or more branches (Rd, Rs) and a supplementary connection (S1, S2 . . . ) is provided between each pair of nodes of the same level (FIG. 1).
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