Communications network with optical channels

Details Communications network with optical channels Communications network with optical channels

H - Electricity

04

Q

325/1

H04Q 11/02 (2006.01) G02F 2/00 (2006.01) H04Q 3/52 (2006.01) H04Q 11/00 (2006.01)

Patent

CA 1199074

ABSTRACT OF THE DISCLOSURE A communications network with optical channels is provided. Using the heterodyne principle, optical channels for narrow and wideband services can be provided in very large numbers to the subscriber stations connected to the communications network using a monomode fiber as the transmission medium. The switching of these channels can also be effected using the heterodyne principle with optional access without a connecting path network in the conventional sense, all the receiver equipments being connected with all the transmitter equipments via a common light frequency channel multiplex. The tuning to a channel from which reception is required is carried out using a tunable local laser. The intermediate frequency occurs in the microwave range. The intermediate frequency filter is fixed tuned.

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