Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1995-01-11
1996-04-23
Boudreau, Leo
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359174, 359160, 359124, 359161, H04B 1016
Patent
active
055109268
ABSTRACT:
A link using spectrum multiplexing, in which link an amplifying fiber amplifies a plurality of multiplexed carrier waves. The invention makes it possible to maintain a flat spectrum distribution of the gain of the amplifying fiber when the number of carrier waves varies. For that purpose, light that is amplified by the amplifying fiber and that is independent of the carrier waves is servo-controlled in power. The light is constituted by a reverse amplified spontaneous emission. After being filtered in a filter and detected by a photodiode, the light controls the power supplied to two laser diodes for pumping the fiber. The invention applies in particular to implementing optical transmission networks.
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patent: 5233463 (1993-08-01), Grasso et al.
patent: 5276543 (1994-01-01), Olshansky
patent: 5396360 (1995-03-01), Majima
Patent Abstracts of Japan, vol. 17, No. 466 (E-1421) 25 Aug. 1993 & JP-A-05 110 511 (NEC).
French Search Report FR 9400320.
Bayart Dominique
Chesnoy Jose
Clesca Bertrand
ALCATEL N.V.
Boudreau Leo
Mehta Bhavesh
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