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公开(公告)号：US08208812B2
公开(公告)日：2012-06-26
申请号：US12299065
申请日：2006-05-25
IPC分类号： H04J14/02
CPC分类号： H04J14/0221 , H04B10/296 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/021 , H04J14/0227 , H04J14/0246 , H04J14/0279
摘要： A control-target-value setting unit sets a control target value corresponding to the number of multiplexed wavelengths measured by a number-of-multiplexed-wavelengths measuring unit. A controller controls the variable optical attenuator based on the control target value. An optical amplifier performs an optical amplification with a constant gain regardless of power of a wavelength-multiplexed light. The controller performs feedback control of the variable optical attenuator such that a result of measurement of the total power of the wavelength-multiplexed light coincides with the control target value.
摘要翻译： 控制目标值设定单元设定与多路复用波长测量单元测得的复用波长数对应的控制对象值。 控制器根据控制目标值控制可变光衰减器。 无论波分复用光的功率如何，光放大器都以恒定的增益进行光放大。 控制器执行可变光衰减器的反馈控制，使得波分复用光的总功率的测量结果与控制目标值一致。
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公开(公告)号：US20100239263A1
公开(公告)日：2010-09-23
申请号：US12299065
申请日：2006-05-25
IPC分类号： H04J14/02
CPC分类号： H04J14/0221 , H04B10/296 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/021 , H04J14/0227 , H04J14/0246 , H04J14/0279
摘要： A control-target-value setting unit sets a control target value corresponding to the number of multiplexed wavelengths measured by a number-of-multiplexed-wavelengths measuring unit. A controller controls the variable optical attenuator based on the control target value. An optical amplifier performs an optical amplification with a constant gain regardless of power of a wavelength-multiplexed light. The controller performs feedback control of the variable optical attenuator such that a result of measurement of the total power of the wavelength-multiplexed light coincides with the control target value.
摘要翻译： 控制目标值设定单元设定与多路复用波长测量单元测得的复用波长数对应的控制对象值。 控制器根据控制目标值控制可变光衰减器。 无论波分复用光的功率如何，光放大器都以恒定的增益进行光放大。 控制器执行可变光衰减器的反馈控制，使得波分复用光的总功率的测量结果与控制目标值一致。
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公开(公告)号：US20130039643A1
公开(公告)日：2013-02-14
申请号：US13642723
申请日：2010-04-23
IPC分类号： H04J14/02
CPC分类号： H04J14/0297 , H04B10/032 , H04J14/0295
摘要： An optical communication system including optical transmission systems each includes a transmission processing unit and a receiving processing unit, wherein the transmission processing unit includes an optical transmission unit that converts electric signals into optical signals, an auxiliary optical transmission unit that converts a part of the electric signals into an optical signal having a wavelength other than wavelengths of the optical signals generated by the optical transmission unit, and outputs the generated optical signal to a different transmission processing unit, and a wavelength multiplexing unit, and the receiving processing unit includes a wavelength demultiplexing unit, an optical receiving unit that converts the optical signals having the wavelengths of the optical signals generated by the optical transmission unit into electric signals, respectively, and an auxiliary optical receiving unit that converts the optical signal having the wavelength of the optical signal generated by the auxiliary optical transmission unit.
摘要翻译： 包括光传输系统的光通信系统各自包括传输处理单元和接收处理单元，其中传输处理单元包括将电信号转换为光信号的光传输单元，将一部分电 信号转换成具有由光传输单元生成的光信号的波长以外的波长的光信号，并将生成的光信号输出到不同的发送处理单元和波长复用单元，并且接收处理单元包括波长解复用 单元，光接收单元，其将具有由光传输单元生成的光信号的波长的光信号分别转换为电信号;以及辅助光接收单元，其将具有光信号波长的光信号 由辅助光传输单元产生。
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4.发明授权公开(公告)号：US06657778B1
公开(公告)日：2003-12-02
申请号：US09806456
申请日：2001-04-18
IPC分类号： H04B1012
CPC分类号： H04B10/2941 , H04B10/296 , H04B2210/258 , H04J14/0221
摘要： Light signals of first to n-th bands amplified en bloc undergo proper attenuation through an adjustable optical attenuator in conformance with attenuation in an optical fiber connected to input of an optical amplifying repeater apparatus, whereon the light signals are demultiplexed or separated into individual bands and amplified by first to n-th fixed-gain optical amplifiers (#1, . . . , #n) each having a high fixed gain in the respective bands to be subsequently multiplexed by an optical multiplexer and then sent out onto a transmission line. A monitoring light branching device extracts a part of light power of a specific monitoring wavelength, which is then fed to an adjustable attenuator control circuit which controls the attenuation factor of the adjustable optical attenuator so that the light power of the specific wavelength remains constant. The gain of the optical amplifying repeater apparatus at the specific wavelength can thus be determined. By employing as the optical amplifying medium a substantially homogeneous medium, the gain for the other wavelengths can be fixed. The optical amplifying repeater apparatus whose gain is essentially independent of the change in the number of the wavelengths can thus be realized.
摘要翻译： 第一至第n个频带放大的光信号通过可调节的光衰减器经过适当的衰减，其符合连接到光放大中继器设备的输入的光纤中的衰减，其中光信号被解复用或分离成单个频带， 由第一至第n固定增益光放大器（＃1，...，#n）放大，每个固定增益光放大器（＃1，...，#n）在各个频带中具有高固定增益，随后由光复用器复用，然后发送到传输线。 监视光分支装置提取特定监视波长的一部分光功率，然后将其馈送到可调节衰减器控制电路，该可调节衰减器控制电路控制可调节光衰减器的衰减因子，使得特定波长的光功率保持恒定。 因此可以确定特定波长的光放大中继器装置的增益。 通过采用基本均匀的介质作为光放大介质，可以固定其它波长的增益。 因此可以实现其增益基本上与波长数量的变化无关的光放大中继器装置。
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5.发明授权公开(公告)号：US07170673B2
公开(公告)日：2007-01-30
申请号：US10713259
申请日：2003-11-17
CPC分类号： H04B10/2941 , H04B10/296 , H04B2210/258 , H04J14/0221
摘要： Light signals of first to n-th bands amplified en bloc undergo proper attenuation through an adjustable optical attenuator in conformance with attenuation in an optical fiber connected to input of an optical amplifying repeater apparatus, whereon the light signals are demultiplexed or separated into individual bands and amplified by first to n-th fixed-gain optical amplifiers (#1, . . . , #n) each having a high fixed gain in the respective bands to be subsequently multiplexed by an optical multiplexer and then sent out onto a transmission line. A monitoring light branching device extracts a part of light power of a specific monitoring wavelength, which is then fed to an adjustable attenuator control circuit which controls the attenuation factor of the adjustable optical attenuator so that the light power of the specific wavelength remains constant. The gain of the optical amplifying repeater apparatus at the specific wavelength can thus be determined. By employing as the optical amplifying medium a substantially homogeneous medium, the gain for the other wavelengths can be fixed. The optical amplifying repeater apparatus whose gain is essentially independent of the change in the number of the wavelengths can thus be realized.
摘要翻译： 第一至第n个频带放大的光信号通过可调节的光衰减器经过适当的衰减，其符合连接到光放大中继器设备的输入的光纤中的衰减，其中光信号被解复用或分离成单个频带， 由第一至第n固定增益光放大器（＃1，...，#n）放大，每个固定增益光放大器（＃1，...，#n）在各个频带中具有高固定增益，随后由光复用器复用，然后发送到传输线。 监视光分支装置提取特定监视波长的一部分光功率，然后将其馈送到可调节衰减器控制电路，该可调节衰减器控制电路控制可调节光衰减器的衰减因子，使得特定波长的光功率保持恒定。 因此可以确定特定波长的光放大中继器装置的增益。 通过采用基本均匀的介质作为光放大介质，可以固定其它波长的增益。 因此可以实现其增益基本上与波长数量的变化无关的光放大中继器装置。
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6.发明授权公开(公告)号：US06873456B2
公开(公告)日：2005-03-29
申请号：US10217110
申请日：2002-08-12
IPC分类号： H04B10/294 , H04B10/296 , H04J14/02 , H01S3/00
CPC分类号： H04B10/2941 , H04B10/296 , H04B2210/258 , H04J14/0221
摘要： Light signals of first to n-th bands amplified en bloc undergo proper attenuation through an adjustable optical attenuator in conformance with attenuation in an optical fiber connected to input of an optical amplifying repeater apparatus, whereon the light signals are demultiplexed or separated into individual bands and amplified by first to n-th fixed-gain optical amplifiers (#1, . . . , #n) each having a high fixed gain in the respective bands to be subsequently multiplexed by an optical multiplexer and then sent out onto a transmission line. A monitoring light branching device extracts a part of light power of a specific monitoring wavelength, which is then fed to an adjustable attenuator control circuit which controls the attenuation factor of the adjustable optical attenuator so that the light power of the specific wavelength remains constant. The gain of the optical amplifying repeater apparatus at the specific wavelength can thus be determined. By employing as the optical amplifying medium a substantially homogeneous medium, the gain for the other wavelengths can be fixed. The optical amplifying repeater apparatus whose gain is essentially independent of the change in the number of the wavelengths can thus be realized.
摘要翻译： 第一至第n个频带放大的光信号通过可调节的光衰减器经过适当的衰减，其符合连接到光放大中继器设备的输入的光纤中的衰减，其中光信号被解复用或分离成单个频带， 由第一至第n固定增益光放大器（＃1，...，#n）放大，每个固定增益光放大器（＃1，...，#n）在各个频带中具有高固定增益，随后由光复用器复用，然后发送到传输线。 监视光分支装置提取特定监视波长的一部分光功率，然后将其馈送到可调节衰减器控制电路，该可调节衰减器控制电路控制可调节光衰减器的衰减因子，使得特定波长的光功率保持恒定。 因此可以确定特定波长的光放大中继器装置的增益。 通过采用基本均匀的介质作为光放大介质，可以固定其它波长的增益。 因此可以实现其增益基本上与波长数量的变化无关的光放大中继器装置。
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公开(公告)号：US5506724A
公开(公告)日：1996-04-09
申请号：US309921
申请日：1994-09-21
IPC分类号： G02F1/35 , H01S3/094 , H01S3/13 , H04B10/07 , H04B10/293 , H04B10/294 , H04B10/564 , H04B10/572 , H04J14/00 , H04J14/02 , H01S3/00
CPC分类号： H04B10/296 , H01S3/094003 , H01S3/1301 , H01S2301/06 , H01S3/094011 , H01S3/094023
摘要： An optical fiber which amplifies an input signal by a pump source, a compensation-signal source which injects a compensation-signal propagating contra-directionally with respect to the input signal Into the optical fiber, a gain detector which measures a spontaneous emission light of the pump source at an input side of the optical fiber and a compensation-signal source controller which controls output of the compensation-signal source based on output of the gain detector are provided. In addition, a coupler and a wavelength selective reflector which reflects a light of the same wavelength as the compensation-signal selectively, are provided at the input side of the optical fiber.
摘要翻译： 一种通过泵浦源放大输入信号的光纤，将与输入信号相反方向传播的补偿信号注入到光纤中的补偿信号源，测量自发发射光的增益检测器， 提供了在光纤的输入侧的泵浦源，以及基于增益检测器的输出来控制补偿信号源的输出的补偿信号源控制器。 此外，在光纤的输入侧设置耦合器和选择性地反射与补偿信号相同波长的光的波长选择性反射器。
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公开(公告)号：US08320771B2
公开(公告)日：2012-11-27
申请号：US12812367
申请日：2008-01-22
申请人： Tsuyoshi Yoshida , Toshiyuki Tokura , Takashi Sugihara , Katsuhiro Shimizu , Aritomo Uemura , Hiroki Shima , Kiyoshi Onohara
发明人： Tsuyoshi Yoshida , Toshiyuki Tokura , Takashi Sugihara , Katsuhiro Shimizu , Aritomo Uemura , Hiroki Shima , Kiyoshi Onohara
IPC分类号： H04B10/00
CPC分类号： H04J14/0221
摘要： A repeater includes a variable optical attenuating unit that collectively attenuates WDM optical signal input, an optical-attenuation adjusting unit that adjusts attenuation in the variable optical attenuating unit, and an optical amplifying unit that collectively amplifies and outputs the WDM optical signal collectively attenuated, to a downstream side. An optical-attenuation adjusting unit includes an input level detector; an output level detector; an output-level transmitting unit that receives information of a signal level of WDM optical signal output by a repeater at an upstream side and transmits information of a signal level of the WDM optical signal detected by the output level detector to a repeater at a downstream side; and an attenuation amount controller that controls the variable optical attenuating unit by calculating an attenuation amount thereof based on information of a signal level detected by the input level detector and a signal level received by the output-level transmitting unit.
摘要翻译： 中继器包括共同衰减WDM光信号输入的可变光衰减单元，调整可变光衰减单元中的衰减的光衰减调整单元和共同放大并输出共同衰减的WDM光信号的光放大单元， 下游侧。 光衰减调整单元包括输入电平检测器; 输出电平检测器; 输出级发送单元，其接收由上游侧的中继器输出的WDM光信号的信号电平的信息，并将由输出电平检测器检测出的WDM光信号的信号电平的信息发送到下游侧的中继器 ; 以及衰减量控制器，其通过基于由输入电平检测器检测到的信号电平的信息和由输出电平发送单元接收的信号电平来计算其衰减量来控制可变光衰减单元。
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公开(公告)号：US20100284694A1
公开(公告)日：2010-11-11
申请号：US12812367
申请日：2008-01-22
申请人： Tsuyoshi Yoshida , Toshiyuki Tokura , Takashi Sugihara , Katsuhiro Shimizu , Aritomo Uemura , Hiroki Shima , Kiyoshi Onohara
发明人： Tsuyoshi Yoshida , Toshiyuki Tokura , Takashi Sugihara , Katsuhiro Shimizu , Aritomo Uemura , Hiroki Shima , Kiyoshi Onohara
IPC分类号： H04J14/02
CPC分类号： H04J14/0221
摘要： A repeater includes a variable optical attenuating unit that collectively attenuates WDM optical signal input, an optical-attenuation adjusting unit that adjusts attenuation in the variable optical attenuating unit, and an optical amplifying unit that collectively amplifies and outputs the WDM optical signal collectively attenuated, to a downstream side. An optical-attenuation adjusting unit includes an input level detector; an output level detector; an output-level transmitting unit that receives information of a signal level of WDM optical signal output by a repeater at an upstream side and transmits information of a signal level of the WDM optical signal detected by the output level detector to a repeater at a downstream side; and an attenuation amount controller that controls the variable optical attenuating unit by calculating an attenuation amount thereof based on information of a signal level detected by the input level detector and a signal level received by the output-level transmitting unit.
摘要翻译： 中继器包括共同衰减WDM光信号输入的可变光衰减单元，调整可变光衰减单元中的衰减的光衰减调整单元和共同放大并输出共同衰减的WDM光信号的光放大单元， 下游侧。 光衰减调整单元包括输入电平检测器; 输出电平检测器; 输出级发送单元，其接收由上游侧的中继器输出的WDM光信号的信号电平的信息，并将由输出电平检测器检测出的WDM光信号的信号电平的信息发送到下游侧的中继器 ; 以及衰减量控制器，其通过基于由输入电平检测器检测到的信号电平的信息和由输出电平发送单元接收的信号电平来计算其衰减量来控制可变光衰减单元。
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公开(公告)号：US07768698B2
公开(公告)日：2010-08-03
申请号：US11661502
申请日：2004-08-30
申请人： Toshiyuki Tokura , Katsuhiro Shimizu , Tasuku Fujieda , Ken'ichi Asakawa , Hitoshi Mikada , Katsuyoshi Kawaguchi
发明人： Toshiyuki Tokura , Katsuhiro Shimizu , Tasuku Fujieda , Ken'ichi Asakawa , Hitoshi Mikada , Katsuyoshi Kawaguchi
IPC分类号： H04B10/17
CPC分类号： H01S3/302 , H01S3/06725 , H01S3/06758 , H01S3/094076 , H01S3/0941 , H01S3/10007 , H04B10/2916
摘要： A Raman amplifier includes a pumping light source, an optical coupler, and a Raman amplifier medium. The pumping light source outputs a pumping light that is intensity-modulated with a frequency equal to or higher than 100 megahertz. The optical coupler couples the pumping light with a carrier light. The Raman amplification medium is pumped by the pumping light to amplify the carrier light. The Raman amplification medium has characteristics of a low dispersion and a small difference between propagation times of the carrier light and the pumping light.
摘要翻译： 拉曼放大器包括泵浦光源，光耦合器和拉曼放大器介质。 泵浦光源输出以等于或高于100兆赫的频率进行强度调制的泵浦光。 光耦合器将泵浦光与载体光耦合。 通过泵浦光泵浦拉曼放大介质以放大载体光。 拉曼放大介质具有载流子和泵浦光的传播时间之间的低色散和小差异的特征。
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