Optical: systems and elements – Optical amplifier – Correction of deleterious effects
Patent
1997-04-21
2000-05-16
Moskowitz, Nelson
Optical: systems and elements
Optical amplifier
Correction of deleterious effects
359174, 359176, 359177, H04J 1402, H04B 1002, H04B 1016
Patent
active
06064513&
ABSTRACT:
An optical transmission system having a linear repeater section that performs linear amplification of an optical signal, in which some functional redundancy is introduced to improve the reliability of long-distance signal transmission. The optical transmission line is segmented by regenerative repeater devices into a plurality of linear repeater sections, in each of which a plurality of linear optical amplifiers are deployed. The regenerative repeater devices have a signal regeneration unit that regenerates the received optical signals to compensate for their deterioration. The present invention eliminates RSOH termination and insertion functions from the regenerative repeater devices connected to at least one end of each linear repeater section. Further, the present invention deploys a signal regeneration unit in parallel with a linear optical amplifier within each linear repeater section. Still further, the present invention adds another signal regeneration unit to the existing signal regeneration unit as part of each regenerative repeater device connected to at least one end of each linear repeater section.
REFERENCES:
patent: 5875046 (1999-02-01), Tamooka et al.
patent: 5877879 (1999-03-01), Naito
Matsumura et al, 2nd Asian-Pacific Conf. of Communic., vol. 1, pp 370-374; abstract only herewith, Jun. 13, 1995.
Fujitsu Limited
Moskowitz Nelson
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