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公开(公告)号：EP2209231A3
公开(公告)日：2012-04-18
申请号：EP10161971.6
申请日：1999-03-15
申请人： FUJITSU LIMITED
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.
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公开(公告)号：EP2209231A2
公开(公告)日：2010-07-21
申请号：EP10161971.6
申请日：1999-03-15
申请人： FUJITSU LIMITED
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： 一种光学放大装置，包括第一和第二光学放大器以及控制器。 第一光放大器接收光并放大接收到的光。 第二光放大器接收由第一光放大器放大的光，并放大接收到的光。 当由第一光放大器接收的光的电平改变Δ时，控制器控制第二光放大器接收的光的电平改变大约-Δ。 在各种实施例中，控制器使得第一和第二光放大器的增益总和恒定。 在其他实施例中，光放大装置包括第一和第二光放大器以及增益调节器。 增益调节器检测第一光学放大器的增益与目标增益的偏差，并且调节第二光学放大器的增益以补偿检测到的偏差。
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公开(公告)号：EP0944190A3
公开(公告)日：2005-01-05
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.
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公开(公告)号：EP0944190B1
公开(公告)日：2010-07-28
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 TECHNOLOGY LIMITED , Kinoshita, Susumu , Itoh, Hiroyuki, FUJITSU HOKKAIDO DIGITAL TECHNOLOGY LIMITED , 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
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公开(公告)号：EP0944189A3
公开(公告)日：2006-10-04
申请号：EP99102825.9
申请日：1999-02-26
申请人： FUJITSU LIMITED
发明人： Kinoshita, Susumu , Onaka, Miki, c/o Fujitsu Limited , Sugaya, Yasushi , Ohshima, Chihiro , Chikama, Terumi , Itou, Hiroyuki, c/o Fujitsu Hokkaido Digital , Okiyama, Tadashi , Kobayashi, Taiki
CPC分类号： H04B10/2941 , H01S3/06758 , H04B2210/003 , H04J14/0221
摘要： An optical amplifier of a wavelength-division multiplexing transmission system that includes a pre-stage optical amplifying unit and a post stage optical amplifying unit. The pre-stage optical amplifying unit has a rare-earth element doped optical fiber (EDF 1) and a pump light source (LD 1 - 3) for inputting a pump light to the rare-earth element doped optical fiber (EDF 1). The post-stage optical amplifying unit has a second rare-earth element doped optical fiber (EDF 2-1, EDF 2-2) and a pump light source (LD 4 - 12) for inputting a pump light to the second rare-earth element doped optical fiber (EDF 2-1). The pre-stage optical amplifying unit and the post-stage optical amplifying unit are optically connected by a detachable optical coupling device. In addition a gain equalizing unit (GEQ 1, GEQ 2), positioned on an output side of the optical fibers, compensates for wavelength-dependency of a gain characteristic of the optical fibers.
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公开(公告)号：EP2209232B1
公开(公告)日：2017-01-25
申请号：EP10161972.4
申请日：1999-03-15
申请人： FUJITSU LIMITED
IPC分类号： H04B10/291 , H04B10/294 , H01S3/067 , H01S3/13
CPC分类号： H04B10/2942 , H01S3/06758 , H01S3/1301 , H01S3/1305 , H04B10/2912 , H04B10/2941 , H04B2210/003
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公开(公告)号：EP2209231B1
公开(公告)日：2016-09-21
申请号：EP10161971.6
申请日：1999-03-15
申请人： FUJITSU LIMITED
IPC分类号： H04B10/291 , H04B10/294 , H01S3/13 , H01S3/067
CPC分类号： H04B10/2942 , H01S3/06758 , H01S3/1301 , H01S3/1305 , H04B10/2912 , H04B10/2941 , H04B2210/003
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公开(公告)号：EP2209232A3
公开(公告)日：2012-04-18
申请号：EP10161972.4
申请日：1999-03-15
申请人： FUJITSU LIMITED
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 flight 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.
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9.发明公开Gain and signal level adjustments of cascaded optical amplifiers 有权Kaskade的Verstärkungs-und Pegelregelungen von optischenVerstärkern
公开(公告)号：EP2209232A2
公开(公告)日：2010-07-21
申请号：EP10161972.4
申请日：1999-03-15
申请人： FUJITSU LIMITED
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 flight 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。 当由第一光学放大器接收的光的电平变化时，控制器控制由第二光学放大器接收的飞行的水平改变大约 - “。在各种实施例中，控制器使得 第一和第二光放大器恒定。 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。
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公开(公告)号：EP0944189B1
公开(公告)日：2009-07-15
申请号：EP99102825.9
申请日：1999-02-26
申请人： FUJITSU LIMITED
发明人： Kinoshita, Susumu , Onaka, Miki, c/o Fujitsu Limited , Sugaya, Yasushi , Ohshima, Chihiro , Chikama, Terumi , Itou, Hiroyuki, c/o Fujitsu Hokkaido Digital , Okiyama, Tadashi , Kobayashi, Taiki
CPC分类号： H04B10/2941 , H01S3/06758 , H04B2210/003 , H04J14/0221
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