Local area network with optical transmission

Details Local area network with optical transmission Local area network with optical transmission

1994-10-13

1996-03-05

Boudreau, Leo

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359120, 359121, H04B 1020, H04J 1400

Patent

active

054972590

ABSTRACT:
Each node (N1) of the network is connected to each of the subscriber sets (P1-1) that are associated with the node via a single optical fiber (FP1-1) on two different wavelengths. The node is connected to each of certain other nodes via a single fiber (FN1-2) on a single wavelength. In the node, the electrical signals are supplied by two optical receivers (2, 6) and are transmitted via amplifiers (8, 10) to a single transmitter (4). A passive directional coupler (22) and a wavelength separator (20) provide the necessary optical connections. Passive optical dividers (24, 26) form two interfaces with the sets and with the other nodes. The invention is applicable in particular to industrial transmission networks.

REFERENCES:
patent: 4781427 (1988-11-01), Husbands et al.
patent: 4947389 (1990-08-01), Eng et al.
patent: 5221983 (1993-06-01), Wagner
patent: 5301050 (1994-04-01), Czerwiec et al.
French Search Report FR 9312225.

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