Fiber optic network with reduced coupling losses

Multiplex communications – Wide area network – Packet switching

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Details

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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Aoyama et al., "Optical Demultiplexer for a Wavelength Division . . . ," Applied Optics, vol. 18, No. 8, Apr. 1979, pp. 1253-1258.

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