Optical network with power splitters

摘要

There is disclosed a network architecture comprising a first set of N serially connected power splitting centres connected at one end to receive a power signal and at another end to a termination point, each splitting centre having an output associated with a sub-network for delivering a portion of the power signal to that sub-network, wherein the power splitting factor in each power splitting centre is variable such that the portion of the power signal delivered to each sub-network is variable. The invention is described with particular relation to a double fibre ring optical network.