| 摘要 |
A central node (102) for a communication system having a plurality of nodes coupled to the central node (102) by a passive optical network, includes an output port adapted to be coupled to the passive optical network, and a multiplexer/demultiplexer device (140) having a plurality of outputs (144l-144N) coupled to the output port, wherein the multiplexer/demultiplexer device (140) is adapted to multiplex optical signals from a plurality of optical sources (120l-120N) to one of the plurality of outputs ( 144l- 144N), and to demultiplex an optical signal from a broad spectrum optical source (130) to the plurality of outputs (144l-144N), and wherein for transmitting data to a group of nodes of the communication system, the central node (102) is adapted to selectively provide the data at the output port using the optical signals at the plurality of outputs (144l-144N) of the multiplexer/demultiplexer device (140). |
