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公开(公告)号：EP3379662A1
公开(公告)日：2018-09-26
申请号：EP15908762.6
申请日：2015-11-19
发明人： MIURA, Hiroshi , TOKURA, Toshiyuki
IPC分类号： H01S3/10 , H01S3/067 , H01S3/0941
CPC分类号： H01S3/1305 , H01S3/0078 , H01S3/06754 , H01S3/06758 , H01S3/094003 , H01S3/094011 , H01S3/0941 , H01S3/09415 , H01S3/10015 , H01S3/1003 , H01S3/10069 , H01S3/1301 , H01S3/1312 , H01S3/1608 , H01S2301/04 , H04B10/0777 , H04B10/2931 , H04B10/296
摘要： An optical amplifier is provided which can suppress, without measuring signal beam power at individual wavelengths, wavelength-dependence of gain with respect to a signal beam into which multiple signal beams having respective wavelengths different from each other are multiplexed. The optical amplifier (100) according to the present invention can suppress wavelength-dependence of gain by giving loss in accordance with a linear-loss slope to an amplified signal beam. The optical amplifier (100) is provided with a variable tilt equalizer (11) for varying a loss slope value representing the slope of the loss slope and a tilt control unit (22) for controlling a loss slope value of the variable tilt equalizer (11).
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2.发明公开ADAPTIVE NETWORK OPTIMIZATION IN AN OPTICAL COMMUNICATIONS SYSTEM 有权EINEM OPTISCHEN KOMMUNIKATIONSSYSTEM中的自适应网络
公开(公告)号：EP3000195A1
公开(公告)日：2016-03-30
申请号：EP14815190.5
申请日：2014-12-05
IPC分类号： H04B10/293
CPC分类号： H01S3/30 , H01S3/06754 , H04B10/2931
摘要： An optical amplifier with network optimization techniques maximizes performance of a conventional optical amplifier with minimum user intervention. A circulator enables as much light as possible just below a stimulated Brillouin scattering threshold to be launched in to an optical fiber. An amount of reflected power directed by a circulator to a photo diode has a direct correlation to the quality of the received signal in a communications system.
摘要翻译： 具有网络优化技术的光放大器通过最小的用户干预使传统光放大器的性能最大化。 循环器使得能够在激发的布里渊散射阈值下方尽可能多的光被发射到光纤中。 由循环器引导到光电二极管的反射功率的量与通信系统中的接收信号的质量有直接的相关性。
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3.发明授权Device for controlling the power of a WDM signal whose number of channels varies 失效设备而变化的信道数用于控制WDM信号的强度
公开(公告)号：EP2296303B1
公开(公告)日：2013-11-20
申请号：EP10185439.6
申请日：1997-04-30
申请人： FUJITSU LIMITED
发明人： Sugaya, Yasushi , Kinoshita, Susumu
IPC分类号： H04J14/02 , H04B10/291 , H04B10/294 , H01S3/07
CPC分类号： H01S3/06758 , H01S3/10015 , H01S3/1003 , H01S3/1301 , H01S2301/04 , H04B10/291 , H04B10/2912 , H04B10/2931 , H04B10/2942 , H04B10/296 , H04B2210/003 , H04J14/0221
摘要： An optical amplifying apparatus which includes an optical amplifier, an optical attenuator and a controller. The optical amplifier amplifies a light signal having a variable number of channels. The optical attenuator passes the amplified light signal and has a variable light transmissivity. Prior to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal prior to the varying the number of channels. While the number of channels in the light signal is being varied, the controller maintains the light transmissivity of the optical attenuator to be constant. Subsequent to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal subsequent to the varying the number of channels.
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公开(公告)号：EP1580905B1
公开(公告)日：2012-10-17
申请号：EP04020978.5
申请日：2004-09-03
申请人： FUJITSU LIMITED
CPC分类号： H04B10/0797 , H04B10/0777 , H04B10/2931 , H04B2210/077
摘要： An object of the invention is to realize a gain monitoring method for an optical amplifier and an apparatus thereof, capable of detecting a gain for a signal light regardless of a noise light generated inside the optical amplifier. To this end, in the gain monitoring method according to the present invention, a part of a signal light input to an optical amplifier is branched as an input monitor light, and the input monitor light is modulated, and also a part of a light output from the optical amplifier is branched as an output monitor light, so that the modulated input monitor light and the output monitor light are multiplexed. Then, the multiplexed light is converted into an electrical signal, an interference component contained in the electrical signal is extracted, and a gain for the signal light in the optical amplifier is detected based on the interference component.
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公开(公告)号：EP2131509A1
公开(公告)日：2009-12-09
申请号：EP08104279.8
申请日：2008-06-06
发明人： Rapp, Lutz , Setti, Dario
CPC分类号： H04B10/2931 , H04J14/0221
摘要： An optical amplifier arrangement for WDM systems (wavelength division multiplex) uses a common pump source (PSo) connected to an input of an splitter (SP) deploying pump light via variable optical attenuators (VOA1 - VOAn) to a plurality of optical amplifiers (A1 - An). Control circuits (C1 - Cn) determine individually the output powers of the amplifiers (A1 - An) by varying the attenuations of the variable optical attenuators (VOA1 - VOAn). Amplifier units based on PLC technology are implemented to reduce the size.
摘要翻译： 用于WDM系统（波分复用）的光放大器装置使用通过可变光衰减器（VOA1-VOAn）连接到分配器（SP）的输入的公共泵浦源（PSo）到多个光放大器（A1 - 安）。 通过改变可变光衰减器（VOA1-VOAn）的衰减，控制电路（C1-Cn）分别确定放大器（A1-An）的输出功率。 实现基于PLC技术的放大器单元，以减小尺寸。
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6.发明授权
公开(公告)号：EP1511199B1
公开(公告)日：2009-10-21
申请号：EP04019921.8
申请日：2004-08-23
申请人： FUJITSU LIMITED
发明人： Tian, Cechan , Kinoshita, Susumu
IPC分类号： H04B10/17
CPC分类号： H04B10/2931
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公开(公告)号：EP1580905A3
公开(公告)日：2007-12-05
申请号：EP04020978.5
申请日：2004-09-03
申请人： FUJITSU LIMITED
CPC分类号： H04B10/0797 , H04B10/0777 , H04B10/2931 , H04B2210/077
摘要： An object of the invention is to realize a gain monitoring method for an optical amplifier and an apparatus thereof, capable of detecting a gain for a signal light regardless of a noise light generated inside the optical amplifier. To this end, in the gain monitoring method according to the present invention, a part of a signal light input to an optical amplifier is branched as an input monitor light, and the input monitor light is modulated, and also a part of a light output from the optical amplifier is branched as an output monitor light, so that the modulated input monitor light and the output monitor light are multiplexed. Then, the multiplexed light is converted into an electrical signal, an interference component contained in the electrical signal is extracted, and a gain for the signal light in the optical amplifier is detected based on the interference component.
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公开(公告)号：EP1675284A2
公开(公告)日：2006-06-28
申请号：EP06007902.7
申请日：1996-11-27
申请人： FUJITSU LIMITED
发明人： Onaka, Hiroshi, c/o Fujitsu Limited , Miyata, Hideyuki, c/o Fujitsu Limited , Otsuka, Kazue, c/o Fujitsu Limited
CPC分类号： H04B10/296 , H01S3/06754 , H01S3/094003 , H01S3/10007 , H01S3/10015 , H01S3/1301 , H01S2301/04 , H04B10/291 , H04B10/2912 , H04B10/2931 , H04B10/2942 , H04J14/0221
摘要： An optical amplifier having an optical amplifying medium, a pump light source outputting pump light, a first optical coupler for supplying the pump light to the optical amplifying medium, a probe light source for outputting probe light having a wavelength included in an amplification band, a second optical coupler for supplying the probe light to the optical amplifying medium, detectors for detecting the powers of input signal light and the probe light, respectively, and control unit for controlling the power of the probe light according to outputs from the detectors. This structure makes it possible to provide an optical amplifier which can reduce the wavelength dependence of gain.
摘要翻译： 用于输出铃声探测光光源具有包括在具有在光放大媒质的光放大器的试用的波长，泵浦光源输出婷泵浦光，泵浦光提供给光放大媒质的第一光学耦合器，以放大波段，一个 用于测试光提供给光放大媒质第二光学耦合器，用于检测分别输入信号光与探测光，以及控制单元的功率，用于控制探测光gemäß的功率从所述检测器输出的检测器。 该结构使得能够提供光学放大器，可降低增益的波长依赖性。
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公开(公告)号：EP1402663B1
公开(公告)日：2006-06-21
申请号：EP02719437.2
申请日：2002-04-03
申请人： Avanex Corporation
发明人： BAUCO, Anthony , JU, Ray Lin , LELIC, Muhidin , MENON, Naresh , PETERS, David Attn.K.McLintock Avanex Corp.
CPC分类号： H04B10/2931 , H04B10/077 , H04B10/07955
摘要： A method for controlling an optical amplifier is disclosed. The illustrative method includes inputting a set-point to a controller; receiving a portion of an input signal; receiving a portion of an output signal from a first amplifier stage; receiving a portion of an output signal from an attenuation stage; receiving a portion of an output signal from a second amplifier stage and adjusting the first amplifier stage, the second amplifier stage and the attenuation stage based on the received portions to substantially maintain the set-point. An optical amplifier includes a controller which receives a portion of an input signal, a portion of an output signal from a first amplifier stage, a portion of an output signal from an attenuations stage, and a portion of an output signal from a second amplifier stage. The controller adjusts the first amplifier stage, the attenuation stage, the attenuation stage, and the second amplifier stage based on the received portions of the signals.
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10.发明公开Optical amplifying apparatus, wide-band optical amplifying apparatus, and optical communication system 审中-公开光放大装置，宽带光放大装置和光传输系统
公开(公告)号：EP1480360A8
公开(公告)日：2005-02-23
申请号：EP04020420.8
申请日：2000-09-26
申请人： FUJITSU LIMITED
发明人： Tomofuji, Hiroaki , Sekiya, Motoyoshi , Sakamoto, Takeshi , Murakami, Makoto , Oshima, Chihiro , Onoda, Yoshihito
CPC分类号： H04B10/296 , H01S3/067 , H01S3/06758 , H04B10/2931 , H04B2210/258
摘要： An optical amplifying apparatus for widening the input dynamic range and lowering noises. The optical amplifying apparatus comprises a first optical amplifier, an optical attenuator, a second optical amplifier and a controller. The first optical amplifier changes the target value of output light when the variance amount of input light reaches a predetermined value. The controller changes the attenuation amount of attenuator in accordance with a difference between the target value and the changed target value of the output light level of the first optical amplifier, when the target value of the output light level of the first optical amplifier is changed.
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