公开(公告)号：EP0944190A2

公开(公告)日：1999-09-22

申请号：EP99104026.2

申请日：1999-03-15

申请人： FUJITSU LIMITED

发明人： Inagaki, Shinya ,  Shukunami, Norifumi, c/o FUJITSU HOKKAIDO DIGITAL ,  Kinoshita, Susumu ,  Itoh, Hiroyuki, FUJITSU HOKKAIDO DIGITAL TECHN.LTD ,  Kobayashi, Taiki

IPC分类号： H04B10/17

CPC分类号： H04B10/2942 ,  H01S3/06758 ,  H01S3/1301 ,  H01S3/1305 ,  H04B10/2912 ,  H04B10/2941 ,  H04B2210/003

摘要： An optical amplification device which includes first and second optical amplifiers, and a controller. The first optical amplifier receives a light and amplifies the received light. The second optical amplifier receives the light amplified by the first optical amplifier, and amplifies the received light. When a level of the light received by the first optical amplifier changes by Δ, the controller controls a level of the light received by the second optical amplifier to change by approximately -Δ. In various embodiments, the controller causes the sum of the gains of the first and second optical amplifiers to be constant. In other embodiments, the optical amplification device includes first and second optical amplifier and a gain adjustor. The gain adjustor detects a deviation in gain of the first optical amplifier from a target gain, and adjusts the gain of the second optical amplifier to compensate for the detected deviation.

摘要翻译： 一种包括第一和第二光放大器的光放大装置，以及控制器。 第一光放大器接收光并放大所接收的光。 第二光放大器接收由第一光放大器放大的光并放大所接收的光。 当由第一光放大器接收的光的电平改变为DELTA时，控制器控制由第二光放大器接收的光的电平改变大约-ΔTA。 在各种实施例中，控制器使得第一和第二光学放大器的增益之和恒定。 在其他实施例中，光放大装置包括第一和第二光放大器和增益调节器。 增益调节器检测第一光放大器的增益偏离目标增益，并调整第二光放大器的增益以补偿检测到的偏差。