Multiplex communications – Wide area network – Packet switching
Patent
1989-01-12
1990-09-11
Crosland, Donnie L.
Multiplex communications
Wide area network
Packet switching
370 3, 370 4, 455600, 455617, 350 9614, 356345, H04B 900
Patent
active
049568345
ABSTRACT:
A transmitter includes a coupler having N input prots and N output ports, N being the number of input signals to be multiplexed. The coupler has a unitary coupling matrix, and receives N input signals at its input ports to produce N intermediate transmitting signals at its output ports. The intermediate transmitter signals are subjected to different time delays and then combined into a composite optical signal launched onto an optical bus. At the receiver, the composite signal is divided into N intermediate receiver signals, the intermediate receiver signals are time delayed in the same manner as in the transmitter, and then coupled to input ports of a receiver coupler that has a coupling matrix equal to the transpose of the transmitter's coupling matrix. The output port signals may then be detected and processed to decouple the N data channels.
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Crosland Donnie L.
The Boeing Company
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