1
Kosuke Komaki, Hiroyuki Itou, Hiroshi Iizuka: Optical amplifier and control method therefor. Fujitsu, Staas & Halsey, December 20, 2005: US06977770 (7 worldwide citation)

The optical amplifier according to the present invention includes a first optical amplifying unit, a second optical amplifying unit, a variable optical attenuator optically connected between the first and second optical amplifying units and a first control unit for controlling the gains of the first ...


2
Komaki Kosuke, Itou Hiroyuki, Iizuka Hiroshi: Optical amplifier and control method therefor. Fujitsu, January 2, 2004: EP1376904-A1 (4 worldwide citation)

The optical amplifier according to the present invention includes a first optical amplifying unit (16), a second optical amplifying unit (20), a variable optical attenuator (18) optically connected between the first and second optical amplifying units and a first control unit (36) for controlling th ...


3
Kosuke Komaki, Hiroyuki Itou, Hiroshi Iizuka: Optical amplifier and control method therefor. Fujitsu, Staas & Halsey, December 18, 2003: US20030231379-A1

The optical amplifier according to the present invention includes a first optical amplifying unit, a second optical amplifying unit, a variable optical attenuator optically connected between the first and second optical amplifying units and a first control unit for controlling the gains of the first ...