公开(公告)号：US20080080865A1

公开(公告)日：2008-04-03

申请号：US11843084

申请日：2007-08-22

申请人： Shinichirou Muro ,  Hideaki Sugiya ,  Yasushi Sugaya ,  Etsuko Hayashi

发明人： Shinichirou Muro ,  Hideaki Sugiya ,  Yasushi Sugaya ,  Etsuko Hayashi

IPC分类号： H04J14/02

CPC分类号： H04J14/0221 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0212

摘要： The present invention relates to an optical transmission apparatus capable of suppressing a transitional gain variation when a number of signal wavelengths changes, and maintaining communication quality in optical signals. The optical transmission apparatus is provided with an optical power control device that varies light power of light for each wavelength component corresponding to a wavelength channel, the light including signal light and spontaneous emission light; a wavelength arrangement information obtaining unit that obtains arrangement information of the wavelength channel of the signal light; and a control unit that controls the power control device based on the arrangement information obtained at the wavelength arrangement information obtaining unit so that light power of a wavelength component of the signal light and light power of a wavelength component other than the wavelength component of the signal light become substantially equal.

摘要翻译： 光传输装置技术领域本发明涉及能够抑制多个信号波长变化时的过渡增益变动，并维持光信号的通信质量的光传输装置。 光传输装置设置有光功率控制装置，其对与波长信道对应的每个波长分量改变光的光功率，所述光包括信号光和自发发射光; 波长配置信息获取单元，获取所述信号光的波长信道的布置信息; 以及控制单元，其基于在所述波长配置信息获取单元获得的布置信息来控制所述功率控制装置，使得所述信号光的波长分量的光功率和除了所述信号的波长分量之外的波长分量的光功率 光变得基本相等。

公开(公告)号：US07813642B2

公开(公告)日：2010-10-12

申请号：US11843084

申请日：2007-08-22

申请人： Shinichirou Muro ,  Hideaki Sugiya ,  Yasushi Sugaya ,  Etsuko Hayashi

发明人： Shinichirou Muro ,  Hideaki Sugiya ,  Yasushi Sugaya ,  Etsuko Hayashi

IPC分类号： H04J14/02

CPC分类号： H04J14/0221 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0212

摘要： The present invention relates to an optical transmission apparatus capable of suppressing a transitional gain variation when a number of signal wavelengths changes, and maintaining communication quality in optical signals. The optical transmission apparatus is provided with an optical power control device that varies light power of light for each wavelength component corresponding to a wavelength channel, the light including signal light and spontaneous emission light; a wavelength arrangement information obtaining unit that obtains arrangement information of the wavelength channel of the signal light; and a control unit that controls the power control device based on the arrangement information obtained at the wavelength arrangement information obtaining unit so that light power of a wavelength component of the signal light and light power of a wavelength component other than the wavelength component of the signal light become substantially equal.

摘要翻译： 光传输装置技术领域本发明涉及能够抑制多个信号波长变化时的过渡增益变动，并维持光信号的通信质量的光传输装置。 光传输装置设置有光功率控制装置，其对与波长信道对应的每个波长分量改变光的光功率，所述光包括信号光和自发发射光; 波长配置信息获取单元，获取所述信号光的波长信道的布置信息; 以及控制单元，其基于在所述波长配置信息获取单元获得的布置信息来控制所述功率控制装置，使得所述信号光的波长分量的光功率和除了所述信号的波长分量之外的波长分量的光功率 光变得基本相等。

公开(公告)号：US07145718B2

公开(公告)日：2006-12-05

申请号：US10929539

申请日：2004-08-31

申请人： Yasushi Sugaya ,  Shinichirou Muro ,  Etsuko Hayashi

发明人： Yasushi Sugaya ,  Shinichirou Muro ,  Etsuko Hayashi

IPC分类号： H01S3/00

CPC分类号： H04B10/294 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/094011 ,  H01S3/094096 ,  H01S3/0941 ,  H01S3/1305 ,  H01S3/1608 ,  H01S3/302 ,  H04B10/2916

摘要： In one of control methods of a bidirectional pumping type Raman amplifier according to the present invention, the power of a pumping light supplied to a rare-earth element doped optical fiber is increased or decreased, and a transmission wavelength characteristic of a dynamic gain equalizer is controlled according to a change in a gain wavelength characteristic occurring due to the increase or decrease of the power of the pumping light, to thereby extend a signal light band to either a short wavelength side or a long wavelength side. As a result, it becomes possible to realize a signal light band extension service at a low cost. Moreover, in another control method of the present invention, in a condition where the supply of backward pumping light to the transmission path fiber is shut off, a ratio of a change in the output power of the signal light to a change in the power of the forward pumping light is obtained, and the forward pumping light power is optimized in accordance with this ratio, to obtain a desired level diagram irrespective of a lump loss on the transmission path fiber.

摘要翻译： 在根据本发明的双向泵浦型拉曼放大器的控制方法之一中，提供给稀土元素掺杂光纤的泵浦光的功率增加或减小，并且动态增益均衡器的透射波长特性为 根据由于泵浦光的功率的增加或减少而产生的增益波长特性的变化来控制，从而将信号光带扩展到短波长侧或长波长侧。 结果，可以以低成本实现信号光带扩展服务。 此外，在本发明的另一种控制方法中，在向传输路径光纤供给反向泵浦光的状态被切断的情况下，信号光的输出功率的变化与功率变化的比率 获得正向泵浦光，并且根据该比率优化正向泵浦光功率，以获得期望的电平图，而不管传输路径光纤上的块损耗。

公开(公告)号：US20050225843A1

公开(公告)日：2005-10-13

申请号：US10929539

申请日：2004-08-31

申请人： Yasushi Sugaya ,  Shinichirou Muro ,  Etsuko Hayashi

发明人： Yasushi Sugaya ,  Shinichirou Muro ,  Etsuko Hayashi

IPC分类号： G02F1/35 ,  H01S3/00 ,  H01S3/067 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/10 ,  H01S3/13 ,  H01S3/16 ,  H01S3/30 ,  H04B10/07 ,  H04B10/2537 ,  H04B10/29 ,  H04B10/294 ,  H04J14/00 ,  H04J14/02

CPC分类号： H04B10/294 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/094011 ,  H01S3/094096 ,  H01S3/0941 ,  H01S3/1305 ,  H01S3/1608 ,  H01S3/302 ,  H04B10/2916

摘要： In one of control methods of a bidirectional pumping type Raman amplifier according to the present invention, the power of a pumping light supplied to a rare-earth element doped optical fiber is increased or decreased, and a transmission wavelength characteristic of a dynamic gain equalizer is controlled according to a change in a gain wavelength characteristic occurring due to the increase or decrease of the power of the pumping light, to thereby extend a signal light band to either a short wavelength side or a long wavelength side. As a result, it becomes possible to realize a signal light band extension service at a low cost. Moreover, in another control method of the present invention, in a condition where the supply of backward pumping light to the transmission path fiber is shut off, a ratio of a change in the output power of the signal light to a change in the power of the forward pumping light is obtained, and the forward pumping light power is optimized in accordance with this ratio, to obtain a desired level diagram irrespective of a lump loss on the transmission path fiber.

摘要翻译： 在根据本发明的双向泵浦型拉曼放大器的控制方法之一中，提供给稀土元素掺杂光纤的泵浦光的功率增加或减小，并且动态增益均衡器的透射波长特性为 根据由于泵浦光的功率的增加或减少而产生的增益波长特性的变化来控制，从而将信号光带扩展到短波长侧或长波长侧。 结果，可以以低成本实现信号光带扩展服务。 此外，在本发明的另一种控制方法中，在向传输路径光纤供给反向泵浦光的状态被切断的情况下，信号光的输出功率的变化与功率变化的比率 获得正向泵浦光，并且根据该比率优化正向泵浦光功率，以获得期望的电平图，而不管传输路径光纤上的块损耗。

公开(公告)号：US20090219609A1

公开(公告)日：2009-09-03

申请号：US12320938

申请日：2009-02-09

申请人： Yasushi Sugaya ,  Etsuko Hayashi ,  Masato Nishihara ,  Shinichirou Muro

发明人： Yasushi Sugaya ,  Etsuko Hayashi ,  Masato Nishihara ,  Shinichirou Muro

IPC分类号： H01S3/30

CPC分类号： G02B6/264 ,  H01S3/005 ,  H01S3/0078 ,  H01S3/06758 ,  H01S3/094003 ,  H01S3/094096 ,  H01S3/0941 ,  H01S3/1301 ,  H01S3/1305 ,  H01S3/1608 ,  H01S3/302 ,  H04B10/2916

摘要： In an optical transmission system according to one aspect of the present invention, for transmitting a WDM light from a transmission station to a reception station, utilizing a Raman amplifier, the Raman amplifier comprises: an optical amplification medium; a pumping light source generating a plurality of pumping lights having wavelengths different from each other; an optical device introducing the plurality of pumping lights to the optical amplification medium; and control means for controlling the pumping light source, the transmission station sends out a plurality of reference lights having wavelengths at which respective Raman gain obtained by the plurality of pumping lights reach peaks or wavelengths close to the above wavelengths, and the control means controls the plurality of pumping lights based on the optical powers of the plurality of reference lights. Thus, it becomes possible to accurately manage the optical power balance of the WDM light and the optical power of the entire WDM light.

摘要翻译： 在根据本发明的一个方面的光传输系统中，为了利用拉曼放大器将来自发射站的WDM光发射到接收站，所述拉曼放大器包括：光放大介质; 产生具有彼此不同波长的多个泵浦光的泵浦光源; 将所述多个泵浦光引入所述光放大介质的光学装置; 以及用于控制所述泵浦光源的控制装置，所述发送站发出多个具有波长的参考光，所述波长使由所述多个泵浦光获得的各拉曼增益达到接近上述波长的波峰或波长，并且所述控制装置控制 基于多个参考光的光功率的多个泵浦光。 因此，可以精确地管理WDM光的光功率平衡和整个WDM光的光功率。

公开(公告)号：US07400441B2

公开(公告)日：2008-07-15

申请号：US11831252

申请日：2007-07-31

申请人： Shinichirou Muro ,  Yasushi Sugaya ,  Etsuko Hayashi

发明人： Shinichirou Muro ,  Yasushi Sugaya ,  Etsuko Hayashi

IPC分类号： H01S3/00

CPC分类号： H04B10/2916 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/094061 ,  H01S3/10015 ,  H01S3/1301 ,  H01S3/2375 ,  H01S3/302 ,  H01S2301/04 ,  H04B10/2942 ,  H04B2210/003 ,  H04J14/0221

摘要： There is provided an optical amplifier including a Raman amplification medium, a rare earth doped fiber located at a latter stage of the Raman amplification medium, a first pump light outputting unit for outputting pump light with a plurality of wavelengths, a variable distribution element for distributing the pump light with the plurality of wavelengths, outputted from the first pump light outputting unit, to the Raman amplification medium and the rare earth doped fiber in a variable distribution ratio for each wavelength, and a control unit for individually controlling the distribution ratio of the pump light with the plurality of wavelengths in the variable distribution element and the power of the pump light with the plurality of wavelengths from the first pump light outputting unit in accordance with a wavelength arrangement of each of signal lights wavelength-multiplexed into the wavelength-multiplexed signal light.

摘要翻译： 提供了一种光放大器，包括拉曼放大介质，位于拉曼放大介质的后级的稀土掺杂光纤，用于输出多个波长的泵浦光的第一泵浦光输出单元，用于分配的可变分配元件 将从第一泵浦光输出单元输出的具有多个波长的泵浦光以每个波长的可变分配比率映射到拉曼放大介质和稀土掺杂光纤，以及控制单元，用于分别控制 可变分配元件中的多个波长的泵浦光和来自第一泵浦光输出单元的多个波长的泵浦光的功率根据波长多路复用到波长多路复用的信号光的波长排列 信号灯。

公开(公告)号：US20070268569A1

公开(公告)日：2007-11-22

申请号：US11831252

申请日：2007-07-31

申请人： Shinichirou MURO ,  Yasushi Sugaya ,  Etsuko Hayashi

发明人： Shinichirou MURO ,  Yasushi Sugaya ,  Etsuko Hayashi

IPC分类号： H01S3/30 ,  H01S3/00

CPC分类号： H04B10/2916 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/094061 ,  H01S3/10015 ,  H01S3/1301 ,  H01S3/2375 ,  H01S3/302 ,  H01S2301/04 ,  H04B10/2942 ,  H04B2210/003 ,  H04J14/0221

摘要： There is provided an optical amplifier including a Raman amplification medium, a rare earth doped fiber located at a latter stage of the Raman amplification medium, a first pump light outputting unit for outputting pump light with a plurality of wavelengths, a variable distribution element for distributing the pump light with the plurality of wavelengths, outputted from the first pump light outputting unit, to the Raman amplification medium and the rare earth doped fiber in a variable distribution ratio for each wavelength, and a control unit for individually controlling the distribution ratio of the pump light with the plurality of wavelengths in the variable distribution element and the power of the pump light with the plurality of wavelengths from the first pump light outputting unit in accordance with a wavelength arrangement of each of signal lights wavelength-multiplexed into the wavelength-multiplexed signal light.

摘要翻译： 提供了一种光放大器，包括拉曼放大介质，位于拉曼放大介质的后级的稀土掺杂光纤，用于输出多个波长的泵浦光的第一泵浦光输出单元，用于分配的可变分配元件 将从第一泵浦光输出单元输出的具有多个波长的泵浦光以每个波长的可变分配比率映射到拉曼放大介质和稀土掺杂光纤，以及控制单元，用于分别控制 可变分配元件中的多个波长的泵浦光和来自第一泵浦光输出单元的多个波长的泵浦光的功率根据波长多路复用到波长多路复用的信号光的波长排列 信号灯。

公开(公告)号：US07180654B2

公开(公告)日：2007-02-20

申请号：US10622580

申请日：2003-07-21

申请人： Yasushi Sugaya ,  Shinichirou Muro ,  Etsuko Hayashi

发明人： Yasushi Sugaya ,  Shinichirou Muro ,  Etsuko Hayashi

IPC分类号： H01S3/00

CPC分类号： H04B10/296 ,  H04B10/0775 ,  H04B10/2916

摘要： Multi-wavelength light, including a plurality of segments of light signal with a different wavelength each, is inputted into a Raman amplification fiber. Pumping light generated by a pumping light source is supplied to the Raman amplification fiber in the opposite direction of the transmission direction of the multi-wavelength light. An auxiliary light source generates auxiliary light. An auxiliary light control circuit adjusts the optical power of the auxiliary light with a prescribed response time, based on the change in input power of the multi-wavelength light. The auxiliary light is supplied to the Raman amplification fiber in the same direction as the transmission direction of the multi-wavelength light.

摘要翻译： 包括多个具有不同波长的光信号段的多波长光被输入到拉曼放大光纤中。 由泵浦光源产生的泵浦光以与多波长光的透射方向相反的方向被提供给拉曼放大光纤。 辅助光源产生辅助光。 辅助光控制电路基于多波长光的输入功率的变化，以规定的响应时间来调整辅助光的光功率。 辅助光以与多波长光的透射方向相同的方向供给到拉曼放大光纤。

公开(公告)号：US07505197B2

公开(公告)日：2009-03-17

申请号：US10798267

申请日：2004-03-12

申请人： Yasushi Sugaya ,  Etsuko Hayashi ,  Masato Nishihara ,  Shinichirou Muro

发明人： Yasushi Sugaya ,  Etsuko Hayashi ,  Masato Nishihara ,  Shinichirou Muro

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： G02B6/264 ,  H01S3/005 ,  H01S3/0078 ,  H01S3/06758 ,  H01S3/094003 ,  H01S3/094096 ,  H01S3/0941 ,  H01S3/1301 ,  H01S3/1305 ,  H01S3/1608 ,  H01S3/302 ,  H04B10/2916

摘要： In an optical transmission system according to one aspect of the present invention, for transmitting a WDM light from a transmission station to a reception station, utilizing a Raman amplifier, the Raman amplifier comprises an optical amplification medium; a pumping light source generating a plurality of pumping lights having wavelengths different from each other; an optical device introducing the plurality of pumping lights to the optical amplification medium; and control means for controlling the pumping light source, the transmission station sends out a plurality of reference lights having wavelengths at which respective Raman gain obtained by the plurality of pumping lights reach peaks or wavelengths close to the above wavelengths, and the control means controls the plurality of pumping lights based on the optical powers of the plurality of reference lights. Thus, it becomes possible to accurately manage the optical power balance of the WDM light and the optical power of the entire WDM light.

摘要翻译： 在根据本发明的一个方面的光传输系统中，为了利用拉曼放大器将来自发射站的WDM光发射到接收站，所述拉曼放大器包括光放大介质; 产生具有彼此不同波长的多个泵浦光的泵浦光源; 将所述多个泵浦光引入所述光放大介质的光学装置; 以及用于控制所述泵浦光源的控制装置，所述发送站发出多个具有波长的参考光，所述波长使由所述多个泵浦光获得的各拉曼增益达到接近上述波长的波峰或波长，并且所述控制装置控制 基于多个参考光的光功率的多个泵浦光。 因此，可以精确地管理WDM光的光功率平衡和整个WDM光的光功率。

公开(公告)号：US06823107B2

公开(公告)日：2004-11-23

申请号：US10093820

申请日：2002-03-11

申请人： Shinichirou Muro ,  Etsuko Hayashi ,  Yasushi Sugaya

发明人： Shinichirou Muro ,  Etsuko Hayashi ,  Yasushi Sugaya

IPC分类号： G02B626

CPC分类号： H01S3/302 ,  H01S3/06754 ,  H01S3/1301 ,  H01S3/1305

摘要： The present invention relates to a device for optical amplification, and a primary object of the present invention is to provide a method and device for optical amplification which can maintain the wavelength characteristic of gain constant and can obtain a wide input dynamic range. The device according to the present invention includes a first optical amplifying unit having a Raman amplifying medium and a first pump source for pumping the Raman amplifying medium, and a second optical amplifying unit optically connected to a rear stage of the first optical amplifying unit. The second optical amplifying unit has an optical amplifying medium and second pump sources for pumping the optical amplifying medium. The present invention is characterized by a control unit for controlling the gain of the first optical amplifying unit so that variations in output power of the first optical amplifying unit due to variations in input power of the first optical amplifying unit are canceled.

摘要翻译： 本发明涉及一种用于光放大的装置，其主要目的是提供一种光放大方法和装置，其可以保持增益的波长特性恒定并且可获得宽的输入动态范围。 根据本发明的装置包括具有拉曼放大介质和用于泵浦拉曼放大介质的第一泵浦源的第一光放大单元和与第一光放大单元的后级光连接的第二光放大单元。 第二光放大单元具有用于泵浦光放大介质的光放大介质和第二泵浦源。 本发明的特征在于控制单元，用于控制第一光放大单元的增益，从而消除由于第一光放大单元的输入功率的变化引起的第一光放大单元的输出功率的变化。