Back to results
US 5,786,913 AGranted
Optical TDMA ring network with a central transmitting and receiving device
AssigneeAlcatel
InventorThomas Pfeiffer
Life of this patent
Estimating the term…
Abstract
An optical ring network with a plurality of network elements (#1, . . . , #N) is disclosed which contains only a single laser diode (2). This laser diode (2) is controlled to produce optical pulses of constant repetition frequency. Each network element (#1, . . . , #N) includes an add-drop facility by which the optical pulses (data bits) are selectively added to or extracted from an optical data stream.
Claims10
An optical ring network comprising.
- a center (1) having a laser (2) which produces an optical data stream, the optical data stream including optical pulses of a predetermined pulse repetition frequency, a useable time interval being defined between every two successive optical pulses;
- and
- a plurality of network elements (#1, . . . , #N), each of the network elements (#1, . . . , #N) being passive elements which do not contain a laser, each of the network elements (#1, . . . , #N) being responsive to the optical data stream and comprising a facility whereby information can be added to and extracted from each useable time interval of the optical data stream.
Dependencies are inferred from the claim text.