Method of fast gain control in WDM optical networks

Details Method of fast gain control in WDM optical networks Method of fast gain control in WDM optical networks

1996-10-10

1999-05-04

Hellner, Mark

Optical: systems and elements

Optical amplifier

Optical fiber

359134, H01S 300

Patent

active

059009683

ABSTRACT:
In a WDM network employing a plurality of optical amplifiers in at least one optical fiber link, a system and method for dynamically controlling gain in accordance with the collective behavior of the amplifier chain. According to the present invention, the required response time of dynamic gain control is selected substantially inversely relative to the number of amplifiers in the communication path. Illustratively, in a large-scale optical network (with signal channel paths traversing say, a hundred optical amplifiers), the response time of gain control in accordance with the present invention may be on the order of 5 .mu.s or even less.

REFERENCES:
patent: 5025142 (1991-06-01), Aoshima et al.
patent: 5311347 (1994-05-01), Kubo et al.
patent: 5396360 (1995-03-01), Majima
patent: 5502810 (1996-03-01), Watanabe
patent: 5524144 (1996-06-01), Suzuki
patent: 5537244 (1996-07-01), Fukushima et al.

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