Multiplex communications – Wide area network – Packet switching
Patent
1985-01-25
1987-05-05
Lee, John
Multiplex communications
Wide area network
Packet switching
350 9619, 370 3, 455606, 455611, 455612, G02B 628
Patent
active
046627154
ABSTRACT:
In order to avoid coupling losses, a fiber optic network employs wavelength sensitive devices to couple signals to a bus and split signals from the bus. A terminal device connected to the bus has an optical transmitter which produces signals at a wavelength that is different from the wavelengths employed in optical transmitters of other terminal devices connected to the bus. Furthermore the light is modulated to obtain a frequency channel identifying one or more terminal devices which are to receive messages from the bus. The bus is connected to a repeater which translates between wavelength and frequency channel. Frequency channels may be obtained by amplitude modulating or frequency modulating the light.
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Abeles Daniel C.
Lee John
Westinghouse Electric Corp.
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