TDMA communications network of transmitting information between a central station and remote stations
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United States of America Patent
Stats
-
Dec 22, 1992
Grant Date -
N/A
app pub date -
May 21, 1990
filing date -
Nov 27, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A passive, all optical communications network is provided in which a single optical source in a central station serves many outstations (e.g. telephones in customers' premises). Time division multiplexed optical signals from a laser source are transmitted along a single optical fibre from a central station. The signal is split between several secondary fibers at a first splitter (e.g. array of passive couplers) and between further sets of fibres at a second set of splitters. At this stage there are 120 individual fibres to customers' premises. Digital speech or data is sent back to the central station by a laser in the customers' premises operating in a low duty-cycle mode. The 120 data streams are interleaved at the branching points.
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