Optical: systems and elements – Optical amplifier – Particular active medium
Patent
1995-12-27
1998-11-10
Hellner, Mark
Optical: systems and elements
Optical amplifier
Particular active medium
H01S 300
Patent
active
058352619
ABSTRACT:
In a semiconductor optical amplifier device comprising a semiconductor laser section and a semiconductor optical amplifier both of which are formed on the same semiconductor substrate and which are coupled to each other, the semiconductor optical amplifier comprises a tapered electrode formed on an upper surface thereof. The tapered electrode is divided into a plurality of divided electrodes by at least one of dividing sections which extends along a propagation direction of an incident laser beam. The plurality of divided electrodes are supplied with injection currents which are variable in each of the plurality of divided electrodes.
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Kitamura Mitsuhiro
Sasaki Tatsuya
Tamanuki Takemasa
Hellner Mark
NEC Corporation
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