公开(公告)号：US20080239470A1

公开(公告)日：2008-10-02

申请号：US12016176

申请日：2008-01-17

申请人： Masato Nishihara ,  Miki Onaka ,  Etsuko Hayashi ,  Shinichirou Muro

发明人： Masato Nishihara ,  Miki Onaka ,  Etsuko Hayashi ,  Shinichirou Muro

IPC分类号： H01S3/00

CPC分类号： H04B10/2942 ,  H01S3/06754 ,  H01S3/10015 ,  H01S3/10069 ,  H01S3/1301 ,  H01S3/302

摘要： A control apparatus comprises a light monitoring unit for dividing a signal wavelength band into at least a band in which output light power of an optical amplifier tends to decrease at an decrease in the number of signal wavelengths and a band including a gain deviation band, and for monitoring inputted light power for the individual divided bands, a calculation unit for obtaining the number of signal wavelengths in the individual divided bands based on a monitor result, and a target gain correction unit for correcting a target gain based on a result of the calculation. This suppresses a transient variation of signal light level due to SHB or SRS at a high speed with a simple configuration without deteriorating noise characteristic, thus enabling optical amplifiers to be further disposed in a multi-stage fashion, which can lengthen the transmission distance of a transmission system including an optical add/drop unit.

摘要翻译： 一种控制装置，包括：光监视单元，用于将信号波长带分割成至少一个频带，其中信号波长数目的减少和包括增益偏差带的波段的光放大器的输出光功率趋于减小;以及 用于监视各个分割频带的输入光功率;计算单元，用于基于监视结果获得各个分割频带中的信号波长数;以及目标增益校正单元，用于基于计算结果来校正目标增益 。 这样可以通过简单的结构，以高速度抑制由于SHB或SRS引起的信号光电平的瞬态变化，而不会使噪声特性恶化，从而能够以多级方式进一步布置光放大器，这可以延长传输距离 传输系统包括光学分插单元。

公开(公告)号：US07359112B2

公开(公告)日：2008-04-15

申请号：US11362727

申请日：2006-02-28

申请人： Masato Nishihara ,  Miki Onaka ,  Etsuko Hayashi ,  Shinichirou Muro

发明人： Masato Nishihara ,  Miki Onaka ,  Etsuko Hayashi ,  Shinichirou Muro

IPC分类号： H01S3/00

CPC分类号： H04B10/2942 ,  H01S3/06754 ,  H01S3/10015 ,  H01S3/10069 ,  H01S3/1301 ,  H01S3/302

摘要： A control apparatus comprises a light monitoring unit for dividing a signal wavelength band into at least a band in which output light power of an optical amplifier tends to decrease at an decrease in the number of signal wavelengths and a band including a gain deviation band, and for monitoring inputted light power for the individual divided bands, a calculation unit for obtaining the number of signal wavelengths in the individual divided bands based on a monitor result, and a target gain correction unit for correcting a target gain based on a result of the calculation. This suppresses a transient variation of signal light level due to SHB or SRS at a high speed with a simple configuration without deteriorating noise characteristic, thus enabling optical amplifiers to be further disposed in a multi-stage fashion, which can lengthen the transmission distance of a transmission system including an optical add/drop unit.

摘要翻译： 一种控制装置，包括：光监视单元，用于将信号波长带分割成至少一个频带，其中信号波长数目的减少和包括增益偏差带的波段的光放大器的输出光功率趋于减小;以及 用于监视各个分割频带的输入光功率;计算单元，用于基于监视结果获得各个分割频带中的信号波长数;以及目标增益校正单元，用于基于计算结果来校正目标增益 。 这样可以通过简单的结构，以高速度抑制由于SHB或SRS引起的信号光电平的瞬态变化，而不会使噪声特性恶化，从而能够以多级方式进一步布置光放大器，这可以延长传输距离 传输系统包括光学分插单元。

公开(公告)号：US20060203329A1

公开(公告)日：2006-09-14

申请号：US11362727

申请日：2006-02-28

申请人： Masato Nishihara ,  Miki Onaka ,  Etsuko Hayashi ,  Shinichirou Muro

发明人： Masato Nishihara ,  Miki Onaka ,  Etsuko Hayashi ,  Shinichirou Muro

IPC分类号： H01S3/00

CPC分类号： H04B10/2942 ,  H01S3/06754 ,  H01S3/10015 ,  H01S3/10069 ,  H01S3/1301 ,  H01S3/302

摘要： A control apparatus comprises a light monitoring unit for dividing a signal wavelength band into at least a band in which output light power of an optical amplifier tends to decrease at an decrease in the number of signal wavelengths and a band including a gain deviation band, and for monitoring inputted light power for the individual divided bands, a calculation unit for obtaining the number of signal wavelengths in the individual divided bands based on a monitor result, and a target gain correction unit for correcting a target gain based on a result of the calculation. This suppresses a transient variation of signal light level due to SHB or SRS at a high speed with a simple configuration without deteriorating noise characteristic, thus enabling optical amplifiers to be further disposed in a multi-stage fashion, which can lengthen the transmission distance of a transmission system including an optical add/drop unit.

摘要翻译： 一种控制装置，包括：光监视单元，用于将信号波长带分割成至少一个频带，其中信号波长数目的减少和包括增益偏差带的波段的光放大器的输出光功率趋于减小;以及 用于监视各个分割频带的输入光功率;计算单元，用于基于监视结果获得各个分割频带中的信号波长数;以及目标增益校正单元，用于基于计算结果来校正目标增益 。 这样可以通过简单的结构，以高速度抑制由于SHB或SRS引起的信号光电平的瞬态变化，而不会使噪声特性恶化，从而能够以多级方式进一步布置光放大器，这可以延长传输距离 传输系统包括光学分插单元。

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：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：US07551347B2

公开(公告)日：2009-06-23

申请号：US11979370

申请日：2007-11-01

申请人： Etsuko Hayashi ,  Shunsuke Ono ,  Setsuhisa Tanabe ,  Shinichirou Muro ,  Masato Nishihara

发明人： Etsuko Hayashi ,  Shunsuke Ono ,  Setsuhisa Tanabe ,  Shinichirou Muro ,  Masato Nishihara

IPC分类号： H04B10/17

CPC分类号： H01S3/06754 ,  H01S3/0007 ,  H01S3/0064 ,  H01S3/06758 ,  H01S3/0677 ,  H01S3/09415 ,  H01S3/1608 ,  H01S2301/04

摘要： In an optical amplification characteristics simulation apparatus according to the present invention, using spectrums of a signal light input to an optical amplifier and a characteristic parameter for amplification medium, gain wavelength characteristics of the amplification medium are calculated. A calculating formula for the above has a parameter corresponding to a gain fluctuation portion due to a gain spectral hole burning (GSHB) phenomenon, and this parameter is defined by a function obtained by modeling a physical phenomenon in which a population inversion rate is reduced due to the GSHB, based on that electron occupation numbers in each Stark level on the end level side are increased. Then, based on the calculated gain wavelength characteristics, the output power of the signal light is obtained, to thereby perform the optical amplification characteristics simulation on the optical amplifier. As a result, it is possible to construct a high versatile calculation model based on the physical phenomenon for the gain fluctuation due to the GSHB, to thereby simulate with high precision the optical amplification characteristics of the optical amplifier under arbitrary conditions.

摘要翻译： 在根据本发明的光放大特性模拟装置中，使用输入到光放大器的信号光的光谱和放大介质的特性参数，计算放大介质的增益波长特性。 上述计算公式由于增益谱孔燃烧（GSHB）现象而具有与增益变动部分相对应的参数，该参数由通过模拟体积反转率减少的物理现象获得的函数来定义 根据GSHB的最终级别的每个Stark级别的电子占有数量增加。 然后，基于计算出的增益波长特性，获得信号光的输出功率，从而对光放大器进行光放大特性仿真。 结果，可以基于由于GSHB引起的增益波动的物理现象构建高通用性计算模型，从而以任意条件高精度模拟光放大器的光放大特性。

公开(公告)号：US20080088915A1

公开(公告)日：2008-04-17

申请号：US11979370

申请日：2007-11-01

申请人： Etsuko Hayashi ,  Shunsuke Ono ,  Setsuhisa Tanabe ,  Shinichirou Muro ,  Masato Nishihara

发明人： Etsuko Hayashi ,  Shunsuke Ono ,  Setsuhisa Tanabe ,  Shinichirou Muro ,  Masato Nishihara

IPC分类号： H01S3/00 ,  H04B10/16 ,  H04B10/17 ,  H04J14/02

CPC分类号： H01S3/06754 ,  H01S3/0007 ,  H01S3/0064 ,  H01S3/06758 ,  H01S3/0677 ,  H01S3/09415 ,  H01S3/1608 ,  H01S2301/04

摘要： In an optical amplification characteristics simulation apparatus according to the present invention, using spectrums of a signal light input to an optical amplifier and a characteristic parameter for amplification medium, gain wavelength characteristics of the amplification medium are calculated. A calculating formula for the above has a parameter corresponding to a gain fluctuation portion due to a gain spectral hole burning (GSHB) phenomenon, and this parameter is defined by a function obtained by modeling a physical phenomenon in which a population inversion rate is reduced due to the GSHB, based on that electron occupation numbers in each Stark level on the end level side are increased. Then, based on the calculated gain wavelength characteristics, the output power of the signal light is obtained, to thereby perform the optical amplification characteristics simulation on the optical amplifier. As a result, it is possible to construct a high versatile calculation model based on the physical phenomenon for the gain fluctuation due to the GSHB, to thereby simulate with high precision the optical amplification characteristics of the optical amplifier under arbitrary conditions.

摘要翻译： 在根据本发明的光放大特性模拟装置中，使用输入到光放大器的信号光的光谱和放大介质的特性参数，计算放大介质的增益波长特性。 上述计算公式由于增益谱孔燃烧（GSHB）现象而具有与增益变动部分相对应的参数，该参数由通过模拟体积反转率减少的物理现象获得的函数来定义 根据GSHB的最终级别的每个Stark级别的电子占有数量增加。 然后，基于计算出的增益波长特性，获得信号光的输出功率，从而对光放大器进行光放大特性仿真。 结果，可以基于由于GSHB引起的增益波动的物理现象构建高通用性计算模型，从而以任意条件高精度模拟光放大器的光放大特性。

公开(公告)号：US07715093B2

公开(公告)日：2010-05-11

申请号：US12016176

申请日：2008-01-17

申请人： Masato Nishihara ,  Miki Onaka ,  Etsuko Hayashi

发明人： Masato Nishihara ,  Miki Onaka ,  Etsuko Hayashi

IPC分类号： H01S3/00

CPC分类号： H04B10/2942 ,  H01S3/06754 ,  H01S3/10015 ,  H01S3/10069 ,  H01S3/1301 ,  H01S3/302

摘要： A control apparatus comprises a light monitoring unit for dividing a signal wavelength band into at least a band in which output light power of an optical amplifier tends to decrease at an decrease in the number of signal wavelengths and a band including a gain deviation band, and for monitoring inputted light power for the individual divided bands, a calculation unit for obtaining the number of signal wavelengths in the individual divided bands based on a monitor result, and a target gain correction unit for correcting a target gain based on a result of the calculation. This suppresses a transient variation of signal light level due to SHB or SRS at a high speed with a simple configuration without deteriorating noise characteristic, thus enabling optical amplifiers to be further disposed in a multi-stage fashion, which can lengthen the transmission distance of a transmission system including an optical add/drop unit.

摘要翻译： 一种控制装置，包括：光监视单元，用于将信号波长带分割成至少一个频带，其中信号波长数目的减少和包括增益偏差带的波段的光放大器的输出光功率趋于减小;以及 用于监视各个分割频带的输入光功率;计算单元，用于基于监视结果获得各个分割频带中的信号波长数;以及目标增益校正单元，用于基于计算结果来校正目标增益 。 这样可以通过简单的结构，以高速度抑制由于SHB或SRS引起的信号光电平的瞬态变化，而不会使噪声特性恶化，从而能够以多级方式进一步布置光放大器，这可以延长传输距离 传输系统包括光学分插单元。

公开(公告)号：US20050088727A1

公开(公告)日：2005-04-28

申请号：US10950699

申请日：2004-09-28

申请人： Hisao Nakashima ,  Miki Onaka ,  Masato Nishihara ,  Etsuko Hayashi ,  Hideyuki Miyata

发明人： Hisao Nakashima ,  Miki Onaka ,  Masato Nishihara ,  Etsuko Hayashi ,  Hideyuki Miyata

IPC分类号： H01S3/067 ,  H01S3/13 ,  H01S3/131 ,  H01S5/0683 ,  H01S5/50 ,  H01S3/10

CPC分类号： H04B10/291 ,  H01S3/1305 ,  H01S3/1312 ,  H01S5/0683 ,  H01S5/50

摘要： An optical apparatus having a loss compensation capability includes between an input connector 1A and an output connector 1B an input side optical parts 2 including an input monitor, an amplification medium 3, a loss medium 4, and an output side optical parts 5 including an output monitor in this order, and is provided with a control circuit 6 for controlling a gain based on a monitor result of input/output light. The amount of reflection attenuation on all points, on which the light can be reflected on the optical path from the output end of the amplification medium 3 to the output connector 1B, can be smaller than the amount of reflection attenuation on the end face of the output connector 1B.

摘要翻译： 具有损耗补偿能力的光学装置在输入连接器1A和输出连接器1B之间包括输入侧光学部件2，输入侧光学部件2包括输入监视器，放大介质3，损耗介质4和输出侧光学部件5，包括 输出监视器，并且设置有用于基于输入/输出光的监视结果来控制增益的控制电路6。 光可以从放大介质3的输出端到输出连接器1B的光路上反射的所有点上的反射衰减量可以小于在放大介质3的端面上的反射衰减量 输出连接器1B。

公开(公告)号：US07061669B2

公开(公告)日：2006-06-13

申请号：US10950699

申请日：2004-09-28

申请人： Hisao Nakashima ,  Miki Onaka ,  Masato Nishihara ,  Etsuko Hayashi ,  Hideyuki Miyata

发明人： Hisao Nakashima ,  Miki Onaka ,  Masato Nishihara ,  Etsuko Hayashi ,  Hideyuki Miyata

IPC分类号： H01S3/00

CPC分类号： H04B10/291 ,  H01S3/1305 ,  H01S3/1312 ,  H01S5/0683 ,  H01S5/50

摘要： An optical apparatus having a loss compensation capability includes between an input connector 1A and an output connector 1B an input side optical parts 2 including an input monitor, an amplification medium 3, a loss medium 4, and an output side optical parts 5 including an output monitor in this order, and is provided with a control circuit 6 for controlling a gain based on a monitor result of input/output light. The amount of reflection attenuation on all points, on which the light can be reflected on the optical path from the output end of the amplification medium 3 to the output connector 1B, can be smaller than the amount of reflection attenuation on the end face of the output connector 1B.

摘要翻译： 具有损耗补偿能力的光学装置在输入连接器1A和输出连接器1B之间包括输入侧光学部件2，输入侧光学部件2包括输入监视器，放大介质3，损耗介质4和输出侧光学部件5，包括 输出监视器，并且设置有用于基于输入/输出光的监视结果来控制增益的控制电路6。 光可以在从放大介质3的输出端到输出连接器1B的光路上反射的所有点上的反射衰减量可以小于在放大介质3的端面上的反射衰减量 输出连接器1B。