05664131 is referenced by 71 patents and cites 11 patents.

A light amplifier includes first and second light amplifying parts, and a first control part. The first light amplifying part has a first number of elements or ions performing a light amplifying operation and is excited by a first exciting light which is excessive with respect to the first number of elements or ions. The first light amplifying part amplifies a signal light applied hereto. The second light amplifying part has a second number of elements or ions performing a light amplifying operation and is excited by a second exciting light having a constant intensity. The second number is than the first number. The second light amplifying part amplifies an amplified signal light output from the first light amplifying part. The first control part performs a control operation so that an intensity of the amplified signal light output from the first light amplifying part is constant.

Title
Light amplifier
Application Number
8/530875
Publication Number
5664131
Application Date
September 20, 1995
Publication Date
September 2, 1997
Inventor
Hideaki Sugiya
Kawasaki
JP
Agent
Helfgott & Karas P C
Assignee
Fujitsu
JP
IPC
H01S 3/00
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