公开(公告)号：US07394589B2

公开(公告)日：2008-07-01

申请号：US10299808

申请日：2002-11-20

申请人： Miki Onaka ,  Tomoto Tanaka ,  Etsuko Hayashi ,  Yasushi Sugaya ,  Susumu Kinoshita

发明人： Miki Onaka ,  Tomoto Tanaka ,  Etsuko Hayashi ,  Yasushi Sugaya ,  Susumu Kinoshita

IPC分类号： H01S3/00

CPC分类号： H04B10/2942 ,  H01S3/06758 ,  H01S3/0941 ,  H01S3/302 ,  H01S5/146 ,  H01S2301/06 ,  H04B10/2916

摘要： A Raman amplifier providing a wideband gain for use in a wavelength division multiplexing (WDM) optical communication system. In one embodiment, a first optical amplifier Raman amplifies a wavelength division multiplexed signal light in both a first wavelength band and a second wavelength band in accordance with a plurality of excitation (pumping) lights provided to the first optical amplifier, the first and second wavelength bands being different from each other. A divider divides the amplified signal light into first and second lights in the first and second wavelength bands, respectively. A second optical amplifier amplifies the first light and has a gain band in the first wavelength band. The third optical amplifier amplifies the second light and has a gain in the second wavelength band. In various embodiments, a gain equalizer and/or an optical isolator is used in combination with the first optical amplifier providing the Raman amplification. A controller is also provided to control the excitation lights provided to the first optical amplifier to achieve specific effects.

摘要翻译： 提供宽带增益的拉曼放大器，用于波分复用（WDM）光通信系统。 在一个实施例中，第一光放大器拉曼根据提供给第一光放大器的多个激励（泵浦）光放大第一波长带和第二波段中的波分复用信号光，第一和第二波长 乐队彼此不同。 分频器将放大的信号光分成第一和第二波长带中的第一和第二光。 第二光放大器放大第一光并具有第一波长带中的增益带。 第三光放大器放大第二光并具有第二波长带的增益。 在各种实施例中，增益均衡器和/或光隔离器与提供拉曼放大的第一光放大器组合使用。 还提供控制器来控制提供给第一光放大器的激发光以实现特定的效果。

公开(公告)号：US20050132785A1

公开(公告)日：2005-06-23

申请号：US11039905

申请日：2005-01-24

申请人： Miki Onaka ,  Yasushi Sugaya ,  Etsuko Hayashi

发明人： Miki Onaka ,  Yasushi Sugaya ,  Etsuko Hayashi

IPC分类号： G02F1/35 ,  H01S3/067 ,  H01S3/094 ,  H01S3/13 ,  H01S3/131 ,  H01S3/16 ,  H01S3/30 ,  H01S5/14 ,  H04B10/07 ,  H04B10/29 ,  H04B10/294 ,  H04J14/00 ,  H04J14/02 ,  G01L3/26

CPC分类号： H04B10/2916 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/094042 ,  H01S3/094046 ,  H01S3/094096 ,  H01S3/1301 ,  H01S3/1618 ,  H01S3/302 ,  H01S5/141

摘要： The present invention has an object to provide a Raman amplifier, a WDM optical communication system and a method of controlling the Raman amplification, capable of optimizing amplification characteristics in response to a change of operating conditions of the system so that transmission quality of the WDM signal light can be maintained in good. In order to achieve the above object, in the Raman amplifier according to the present invention, a plurality of pumping light generated by a pumping light generating section capable of varying a wavelength and power of the plurality of pumping light, are multiplexed by a pumping light multiplexing section that has wavelength variable transmission characteristics, and are supplied to an optical transmission path via a pumping light supplying section, and signal light being propagated through the optical transmission path is Raman amplified, wherein the Raman amplifier comprises a pumping light administrating section that controls supply conditions of the pumping light by adjusting operational setting of the pumping light generating section and the wavelength transmission characteristics of the pumping light multiplexing section in synchronization with the change with time of the system operational conditions.

摘要翻译： 本发明的目的是提供拉曼放大器，WDM光通信系统和控制拉曼放大的方法，其能够响应于系统的操作条件的变化来优化放大特性，使得WDM信号的传输质量 光能保持良好。 为了实现上述目的，在根据本发明的拉曼放大器中，由能够改变多个泵浦光的波长和功率的泵浦光产生部分产生的多个泵浦光由泵浦光 具有波长可变传输特性的复用部分，并且经由泵浦光供应部分被提供给光传输路径，并且通过光传输路径传播的信号光是拉曼放大的，其中拉曼放大器包括控制 通过随着系统操作条件随时间的变化同步地调节泵浦光发生部分的操作设置和泵浦光复用部分的波长传输特性来调节泵浦光的供给条件。

公开(公告)号：US06624926B1

公开(公告)日：2003-09-23

申请号：US09693838

申请日：2000-10-23

申请人： Etsuko Hayashi ,  Tomoto Tanaka ,  Yasushi Sugaya ,  Miki Onaka

发明人： Etsuko Hayashi ,  Tomoto Tanaka ,  Yasushi Sugaya ,  Miki Onaka

IPC分类号： H01S300

CPC分类号： H04B10/2916 ,  H01S3/06754 ,  H01S3/1301 ,  H01S3/302 ,  H04B10/0777 ,  H04B10/07955 ,  H04B10/0797 ,  H04B2210/077

摘要： A Raman amplifier for amplifying a wavelength division multiplexed (WDM) light including signal lights wavelength division multiplexed together. The amplifier includes an optical amplifying medium and a controller. The optical amplifying medium uses Raman amplification to amplify the WDM light in accordance with multiplexed pump lights of different wavelengths traveling through the optical amplifying medium. The WDM light is amplified in a wavelength band divided into a plurality of individual wavelength bands. The controller controls power of each pump light based on a wavelength characteristic of gain generated in the optical amplifying medium in the individual wavelength bands.

摘要翻译： 一种拉曼放大器，用于将波分复用（WDM）光包括波分多路复用的信号光放大。 放大器包括光放大介质和控制器。 光放大介质使用拉曼放大来根据穿过光放大介质的不同波长的多路复用泵浦光放大WDM光。 WDM光被分成多个单独波长带的波长带进行放大。 控制器基于在各个波长带中在光放大介质中产生的增益的波长特性来控制每个泵浦光的功率。

公开(公告)号：US07529022B2

公开(公告)日：2009-05-05

申请号：US11039905

申请日：2005-01-24

申请人： Miki Onaka ,  Yasushi Sugaya ,  Etsuko Hayashi

发明人： Miki Onaka ,  Yasushi Sugaya ,  Etsuko Hayashi

IPC分类号： H01S3/30

CPC分类号： H04B10/2916 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/094042 ,  H01S3/094046 ,  H01S3/094096 ,  H01S3/1301 ,  H01S3/1618 ,  H01S3/302 ,  H01S5/141

摘要： The present invention has an object to provide a Raman amplifier, a WDM optical communication system and a method of controlling the Raman amplification, capable of optimizing amplification characteristics in response to a change of operating conditions of the system so that transmission quality of the WDM signal light can be maintained in good. In order to achieve the above object, in the Raman amplifier according to the present invention, a plurality of pumping light generated by a pumping light generating section capable of varying a wavelength and power of the plurality of pumping light, are multiplexed by a pumping light multiplexing section that has wavelength variable transmission characteristics, and are supplied to an optical transmission path via a pumping light supplying section, and signal light being propagated through the optical transmission path is Raman amplified, wherein the Raman amplifier comprises a pumping light administrating section that controls supply conditions of the pumping light by adjusting operational setting of the pumping light generating section and the wavelength transmission characteristics of the pumping light multiplexing section in synchronization with the change with time of the system operational conditions.

摘要翻译： 本发明的目的是提供拉曼放大器，WDM光通信系统和控制拉曼放大的方法，其能够响应于系统的操作条件的变化来优化放大特性，使得WDM信号的传输质量 光能保持良好。 为了实现上述目的，在根据本发明的拉曼放大器中，由能够改变多个泵浦光的波长和功率的泵浦光产生部分产生的多个泵浦光由泵浦光 具有波长可变传输特性的复用部分，并且经由泵浦光供应部分被提供给光传输路径，并且通过光传输路径传播的信号光是拉曼放大的，其中拉曼放大器包括控制 通过随着系统操作条件随时间的变化同步地调节泵浦光发生部分的操作设置和泵浦光复用部分的波长传输特性来调节泵浦光的供给条件。

公开(公告)号：US07042636B2

公开(公告)日：2006-05-09

申请号：US10925929

申请日：2004-08-26

申请人： Etsuko Hayashi ,  Tomoto Tanaka ,  Yasushi Sugaya ,  Miki Onaka

发明人： Etsuko Hayashi ,  Tomoto Tanaka ,  Yasushi Sugaya ,  Miki Onaka

IPC分类号： H01S3/00

CPC分类号： H04B10/2916 ,  H01S3/06754 ,  H01S3/1301 ,  H01S3/302 ,  H04B10/0777 ,  H04B10/07955 ,  H04B10/0797 ,  H04B2210/077

摘要： A Raman amplifier for amplifying a wavelength division multiplexed (WDM) light including signal lights wavelength division multiplexed together. The amplifier includes an optical amplifying medium and a controller. The optical amplifying medium uses Raman amplification to amplify the WDM light in accordance with multiplexed pump lights of different wavelengths traveling through the optical amplifying medium. The WDM light is amplified in a wavelength band divided into a plurality of individual wavelength bands. The controller controls power of each pump light based on a wavelength characteristic of gain generated in the optical amplifying medium in the individual wavelength bands.

公开(公告)号：US20050024714A1

公开(公告)日：2005-02-03

申请号：US10925929

申请日：2004-08-26

申请人： Etsuko Hayashi ,  Tomoto Tanaka ,  Yasushi Sugaya ,  Miki Onaka

发明人： Etsuko Hayashi ,  Tomoto Tanaka ,  Yasushi Sugaya ,  Miki Onaka

IPC分类号： G02F1/35 ,  H01S3/131 ,  H01S3/30 ,  H04B10/07 ,  H04B10/29 ,  H04B10/294 ,  H01S3/00

CPC分类号： H04B10/2916 ,  H01S3/06754 ,  H01S3/1301 ,  H01S3/302 ,  H04B10/0777 ,  H04B10/07955 ,  H04B10/0797 ,  H04B2210/077

摘要： A Raman amplifier for amplifying a wavelength division multiplexed (WDM) light including signal lights wavelength division multiplexed together. The amplifier includes an optical amplifying medium and a controller. The optical amplifying medium uses Raman amplification to amplify the WDM light in accordance with multiplexed pump lights of different wavelengths traveling through the optical amplifying medium. The WDM light is amplified in a wavelength band divided into a plurality of individual wavelength bands. The controller controls power of each pump light based on a wavelength characteristic of gain generated in the optical amplifying medium in the individual wavelength bands.

公开(公告)号：US07843631B2

公开(公告)日：2010-11-30

申请号：US11859842

申请日：2007-09-24

申请人： Miki Onaka ,  Hideaki Sugiya ,  Yasushi Sugaya ,  Etsuko Hayashi

发明人： Miki Onaka ,  Hideaki Sugiya ,  Yasushi Sugaya ,  Etsuko Hayashi

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H01S3/1301 ,  H01S3/06754 ,  H01S3/10015 ,  H01S3/1305 ,  H04B10/296

摘要： The present invention relates to an apparatus for controlling a gain of an optical amplifier, and the apparatus comprises a target gain calculating unit for calculating, as a target gain for an optical amplifier, a value obtained by increasing or decreasing a gain (output) of signal light as the number of wavelengths of wavelength-multiplexed signal light decreases, and a control signal outputting unit for outputting a control signal to the optical amplifier so as to amplify the wavelength-multiplexed signal light with the target gain calculated by the target gain calculating unit. This promptly suppresses a fluctuation of signal light level, particularly, a fluctuation of output light power of an optical amplifier stemming from a variation of the number of wavelengths of wavelength-multiplexed signal light.

摘要翻译： 本发明涉及一种用于控制光放大器的增益的装置，该装置包括：目标增益计算单元，用于计算通过增加或减少增益（输出）获得的值作为光放大器的目标增益 波长多路复用信号光的波长数的信号光减少;以及控制信号输出单元，用于向光放大器输出控制信号，以便以目标增益计算的目标增益放大波分复用信号光 单元。 这迅速地抑制信号光电平的波动，特别是由波长多路复用信号光的波长数的变化导致的光放大器的输出光功率的波动。

公开(公告)号：US07268936B2

公开(公告)日：2007-09-11

申请号：US10761296

申请日：2004-01-22

申请人： Miki Onaka ,  Etsuko Hayashi ,  Yasushi Sugaya

发明人： Miki Onaka ,  Etsuko Hayashi ,  Yasushi Sugaya

IPC分类号： H04B10/18 ,  H01S3/10

CPC分类号： H04B10/291 ,  H04B10/2569

摘要： An object of the present invention is to provide at low cost, a highly functional and small size optical amplifier, which realizes a polarization mode dispersion (PMD) compensation function and an optical amplifying function, with a simple construction. To this end, the optical amplifier of the present invention comprises: a polarization control section that controls the polarization state of input signal light; a PMD generation section that receives the signal light from the polarization control section at a polarization-preserving fiber thereof doped with a rare earth element, and gives a differential group delay between orthogonal polarization mode components of the signal light to perform PMD compensation and at the same time amplifies the signal light; a pumping light supply section that supplies pumping light to the polarization-preserving fiber; a monitoring section that monitors the PMD generation state of the signal light from the PMD generation section, and the like; and a control section that controls the polarization control section and the pumping light supply section based on the monitor results of the monitoring section.

摘要翻译： 本发明的目的是提供一种低功耗和小尺寸的光放大器，其实现了具有简单结构的偏振模色散（PMD）补偿功能和光放大功能。 为此，本发明的光放大器包括：偏振控制部，其控制输入信号光的偏振状态; PMD生成部，其在掺杂有稀土元素的偏振光保留光纤处接收来自偏振光控制部的信号光，并且在信号光的正交偏振模式分量之间给出差分组延迟以执行PMD补偿，并且在 同时放大信号灯; 泵浦光供给部，其向所述偏振光保持光纤供给泵浦光; 监视来自PMD生成部的信号光的PMD生成状态的监视部等， 以及控制部，其基于监视部的监视结果来控制偏振控制部和泵送光供给部。

公开(公告)号：US06441951B1

公开(公告)日：2002-08-27

申请号：US09858509

申请日：2001-05-17

申请人： Tomoto Tanaka ,  Miki Onaka ,  Etsuko Hayashi ,  Yasushi Sugaya

发明人： Tomoto Tanaka ,  Miki Onaka ,  Etsuko Hayashi ,  Yasushi Sugaya

IPC分类号： H01S300

CPC分类号： H01S3/2375 ,  H01S3/06758 ,  H01S3/10015 ,  H01S3/1301 ,  H01S3/1608 ,  H01S3/302 ,  H01S2301/02 ,  H01S2301/04 ,  H04B10/0731 ,  H04B10/0795 ,  H04B10/0797 ,  H04B10/2916

摘要： An object of the invention is to provide an optical amplification apparatus using Raman amplification, which can reliably judge an input interruption of signal light and can shut down the supply of excitation light in accordance with a judged input interruption of the signal light. To this end, the optical amplification apparatus of the present invention comprises an input interruption detection means for detecting a noise light component due to the Raman amplification, and judging an input interruption of the signal light based on the detection result, and further comprises a shut down control means for shutting down supply of the excitation light when an input interruption of the signal light is judged by the input interruption detection means. The input interruption detection means computes the noise light power due to the Raman amplification in accordance with monitored excitation light power, and corrects a threshold value as a judgment reference for an input interruption using the calculation result, and judges an input interruption of the signal light when a monitored value of the input light power to a second optical amplifying means is less than the post-correction threshold value.

摘要翻译： 本发明的目的是提供一种使用拉曼放大的光放大装置，其可以可靠地判断信号光的输入中断，并且可以根据判断的信号光的输入中断来关闭激发光的供给。 为此，本发明的光放大装置包括输入中断检测装置，用于检测由于拉曼放大引起的噪声光分量，并根据检测结果判断信号光的输入中断，还包括关闭 降低控制装置，用于当由输入中断检测装置判断信号光的输入中断时，关闭激励光的供应。 输入中断检测装置根据监视的激发光功率计算由于拉曼放大引起的噪声光功率，并且使用计算结果校正作为输入中断的判断基准的阈值，并且判断信号光的输入中断 当第二光放大装置的输入光功率的监视值小于校正后阈值时。

公开(公告)号：US06847478B1

公开(公告)日：2005-01-25

申请号：US10734169

申请日：2003-12-15

申请人： Tomoto Tanaka ,  Miki Onaka ,  Etsuko Hayashi ,  Yasushi Sugaya

发明人： Tomoto Tanaka ,  Miki Onaka ,  Etsuko Hayashi ,  Yasushi Sugaya

IPC分类号： H01S3/00 ,  H01S3/067 ,  H01S3/10 ,  H01S3/102 ,  H01S3/16 ,  H01S3/23 ,  H01S3/30 ,  H04B10/07 ,  H04B10/071 ,  H04B10/077 ,  H04B10/29 ,  H04B10/291

CPC分类号： H01S3/2375 ,  H01S3/06758 ,  H01S3/10015 ,  H01S3/1301 ,  H01S3/1608 ,  H01S3/302 ,  H01S2301/02 ,  H01S2301/04 ,  H04B10/0731 ,  H04B10/0795 ,  H04B10/0797 ,  H04B10/2916

摘要： An object of the invention is to provide an optical amplification apparatus using Raman amplification, which can reliably judge an input interruption of signal light and can shut down the supply of excitation light in accordance with a judged input interruption of the signal light. To this end, the optical amplification apparatus of the present invention comprises an input interruption detection means for detecting a noise light component due to the Raman amplification, and judging an input interruption of the signal light based on the detection result, and further comprises a shut down control means for shutting down supply of the excitation light when an input interruption of the signal light is judged by the input interruption detection means. The input interruption detection means computes the noise light power due to the Raman amplification in accordance with monitored excitation light power, and corrects a threshold value as a judgment reference for an input interruption using the calculation result, and judges an input interruption of the signal light when a monitored value of the input light power to a second optical amplifying means is less than the post-correction threshold value.

摘要翻译： 本发明的目的是提供一种使用拉曼放大的光放大装置，其可以可靠地判断信号光的输入中断，并且可以根据判断的信号光的输入中断来关闭激发光的供给。 为此，本发明的光放大装置包括输入中断检测装置，用于检测由于拉曼放大引起的噪声光分量，并根据检测结果判断信号光的输入中断，还包括关闭 降低控制装置，用于当由输入中断检测装置判断信号光的输入中断时，关闭激励光的供应。 输入中断检测装置根据监视的激发光功率计算由于拉曼放大引起的噪声光功率，并且使用计算结果校正作为输入中断的判断基准的阈值，并且判断信号光的输入中断 当第二光放大装置的输入光功率的监视值小于校正后阈值时。