公开(公告)号：US08139285B2

公开(公告)日：2012-03-20

申请号：US12360906

申请日：2009-01-28

申请人： Miki Onaka ,  Kiyotoshi Noheji ,  Togo Fukushi ,  Masanori Kondoh

发明人： Miki Onaka ,  Kiyotoshi Noheji ,  Togo Fukushi ,  Masanori Kondoh

IPC分类号： H04B10/17 ,  H01S3/30 ,  H04B10/12

CPC分类号： H01S3/302 ,  H01S3/094003 ,  H01S3/094096 ,  H01S3/0941 ,  H01S3/1301 ,  H01S2301/04 ,  H04B10/2916

摘要： A light amplifying device including a Raman amplifier to Raman-amplify a signal light by inputting excitation lights of a plurality of wavelengths to a transmission path through which the signal light propagates, a plurality of measuring units measuring powers of light output from the Raman amplifier in a plurality of wavelength bands included in an amplification band of the Raman amplifier, a calculating unit calculating a ratio of the respective powers measured by at least two of the plurality of measuring units, and a control unit controlling a power ratio of the respective excitation lights input to the transmission path by the Raman amplifier based on the ratio calculated by the calculating unit.

摘要翻译： 一种光放大装置，包括拉曼放大器，用于通过将多个波长的激发光输入到信号光传播的传输路径来对信号光进行拉曼放大;多个测量单元，测量从拉曼放大器输出的光的功率 包括在拉曼放大器的放大频带中的多个波长带，计算单元，其计算由所述多个测量单元中的至少两个测量的各个功率的比率;以及控制单元，其控制各个激励光的功率比 基于由计算单元计算的比率，由拉曼放大器输入到传输路径。

公开(公告)号：US20090324218A1

公开(公告)日：2009-12-31

申请号：US12585044

申请日：2009-09-01

申请人： Togo Fukushi ,  Tsukasa Takahashi

发明人： Togo Fukushi ,  Tsukasa Takahashi

IPC分类号： H04B10/08

CPC分类号： H04B10/25133 ,  H04B10/673

摘要： A signal detection method used in an optical receiver apparatus detects the variation of an optical input level from the presence or absence of a clock signal and appropriately controls a dispersion compensator, thereby enabling the presence or absence of an input signal to be correctly determined. The signal detection method includes: detecting the level of input light of an optical amplifier, storing the level of the detected input light, comparing the level of the stored previous input light with the level of current input light, detecting the level variation of the input light by the comparison to detect the state change of the presence or absence of an optical signal, performing a dispersion compensation on the input light, and extracting a clock from an optical input. When the level variation of the input light is detected, the presence or absence of the optical signal of the input light is determined from the presence or absence of the clock signal. When the clock signal is not extracted, the dispersion amount is swept.

摘要翻译： 在光接收机装置中使用的信号检测方法根据时钟信号的存在或不存在来检测光输入电平的变化，并适当地控制色散补偿器，从而能够正确地确定输入信号的存在或不存在。 信号检测方法包括：检测光放大器的输入光的电平，存储检测的输入光的电平，将存储的先前输入光的电平与电流输入光的电平进行比较，检测输入的电平变化 通过比较来检测光信号的存在或不存在的状态变化，对输入光进行色散补偿，以及从光输入提取时钟。 当检测到输入光的电平变化时，根据是否存在时钟信号确定输入光的光信号的存在与否。 当不提取时钟信号时，扫描色散量。

公开(公告)号：US08260152B2

公开(公告)日：2012-09-04

申请号：US12585044

申请日：2009-09-01

申请人： Togo Fukushi ,  Tsukasa Takahashi

发明人： Togo Fukushi ,  Tsukasa Takahashi

IPC分类号： H04B10/06

CPC分类号： H04B10/25133 ,  H04B10/673

摘要： A signal detection method used in an optical receiver apparatus detects the variation of an optical input level from the presence or absence of a clock signal and appropriately controls a dispersion compensator, thereby enabling the presence or absence of an input signal to be correctly determined. The signal detection method includes: detecting the level of input light of an optical amplifier, storing the level of the detected input light, comparing the level of the stored previous input light with the level of current input light, detecting the level variation of the input light by the comparison to detect the state change of the presence or absence of an optical signal, performing a dispersion compensation on the input light, and extracting a clock from an optical input. When the level variation of the input light is detected, the presence or absence of the optical signal of the input light is determined from the presence or absence of the clock signal. When the clock signal is not extracted, the dispersion amount is swept.

摘要翻译： 在光接收机装置中使用的信号检测方法根据时钟信号的存在或不存在来检测光输入电平的变化，并适当地控制色散补偿器，从而能够正确地确定输入信号的存在或不存在。 信号检测方法包括：检测光放大器的输入光的电平，存储检测的输入光的电平，将存储的先前输入光的电平与电流输入光的电平进行比较，检测输入的电平变化 通过比较来检测光信号的存在或不存在的状态变化，对输入光进行色散补偿，以及从光输入提取时钟。 当检测到输入光的电平变化时，根据是否存在时钟信号确定输入光的光信号的存在与否。 当不提取时钟信号时，扫描色散量。

公开(公告)号：US08054538B2

公开(公告)日：2011-11-08

申请号：US12365212

申请日：2009-02-04

申请人： Kiyotoshi Noheji ,  Masanori Kondoh ,  Miki Onaka ,  Togo Fukushi

发明人： Kiyotoshi Noheji ,  Masanori Kondoh ,  Miki Onaka ,  Togo Fukushi

IPC分类号： H01S3/30 ,  H04B10/17 ,  H04B10/12

CPC分类号： H04B10/2916 ,  H01S3/302

摘要： A Raman amplification apparatus includes a pumping light supplying section, a main signal wavelength light level acquisition section, a monitoring signal wavelength light level acquisition section, a function information storage section for storing, as function information, information regarding functions for deriving a noise amount and a gain by Raman amplification with regard to a monitoring signal wavelength light with respect to pumping light power supplied from the pumping light supplying section, and a transmission characteristic derivation section for deriving a transmission characteristic on an optical transmission line based on information acquired by the main signal wavelength light level acquisition section and the monitoring signal wavelength light level acquisition section and the function information stored in the function information storage section, and Raman gain is derived with high accuracy in comparison with the conventional technique.

摘要翻译： 拉曼放大装置包括：泵浦光供给部，主信号波长光级获取部，监视信号波长光级获取部，功能信息存储部，作为功能信息存储关于导出噪声量的功能的信息; 关于从泵浦光供给部提供的泵浦光功率的监视信号波长光的拉曼放大的增益，以及用于基于由主体获取的信息导出光传输线上的传输特性的传输特性导出部 信号波长光级获取部和监视信号波长光级获取部以及存储在功能信息存储部中的功能信息，并且与传统技术相比高精度地导出拉曼增益。

公开(公告)号：US08049955B2

公开(公告)日：2011-11-01

申请号：US12285229

申请日：2008-09-30

申请人： Miki Onaka ,  Yasushi Sugaya ,  Togo Fukushi ,  Masanori Kondoh ,  Kiyotoshi Noheji ,  Takashi Hayasaka

发明人： Miki Onaka ,  Yasushi Sugaya ,  Togo Fukushi ,  Masanori Kondoh ,  Kiyotoshi Noheji ,  Takashi Hayasaka

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H04B10/2931 ,  H04B10/07953

摘要： A Raman amplifier inputs pump light into an optical fiber (transmission path) through which an optical signal passes, to amplify the optical signal. An optical receiving unit is provided downstream of the Raman amplifier and monitors the power of the optical signal amplified by the Raman amplifier. A calculating unit determines Raman amplification gain based on the power of the optical signal monitored by the optical receiving unit, and calculates the power of a noise component included in the optical signal based on the gain. The calculating unit, in real-time, calculates the power, which varies in complicated manners depending on conditions, and outputs information concerning to the power to another apparatus at a frequency on the order of milliseconds.

摘要翻译： 拉曼放大器将泵浦光输入到光信号通过的光纤（传输路径）中，以放大光信号。 光接收单元设置在拉曼放大器的下游，并监视由拉曼放大器放大的光信号的功率。 计算单元基于由光接收单元监视的光信号的功率来确定拉曼放大增益，并且基于增益计算包括在光信号中的噪声分量的功率。 计算单元实时地计算根据条件以复杂的方式变化的功率，并且以与毫秒数量级的频率将关于功率的信息输出到另一设备。

公开(公告)号：US08004751B2

公开(公告)日：2011-08-23

申请号：US12232900

申请日：2008-09-25

申请人： Miki Onaka ,  Kiyotoshi Noheji ,  Togo Fukushi ,  Masanori Kondoh

发明人： Miki Onaka ,  Kiyotoshi Noheji ,  Togo Fukushi ,  Masanori Kondoh

IPC分类号： H04B10/17 ,  H04B10/08 ,  H04B10/12

CPC分类号： H01S3/302 ,  H01S3/06725 ,  H01S3/06758 ,  H01S3/06766 ,  H01S3/094096 ,  H01S3/10015 ,  H01S3/10069 ,  H01S3/1305 ,  H04B10/2916

摘要： The WDM optical transmission system using distributed Raman amplification, before starting operation of main signal light, transfers a plurality of lights having different wavelengths to that of the main signal light (for example Raman amplification pump lights or the like) between first and second optical transmission devices connected to opposite ends of a transmission line, monitors transmission line input and output power for each light, calculates a transmission line loss in each wavelength using the monitor results, and specifies a type of the transmission line based on a loss wavelength characteristic that can be estimated from the calculation result. Then the power of pump light provided to the transmission light is optimized in accordance with the type of transmission line.

摘要翻译： 在主信号光开始运行之前，使用分布式拉曼放大的WDM光传输系统将具有不同波长的多个光传输到第一和第二光传输之间的主信号光（例如拉曼放大泵浦光等） 连接到传输线的相对端的装置监测每个光的传输线输入和输出功率，使用监视结果计算每个波长的传输线损耗，并且基于可以根据监视结果的损耗波长特性来指定传输线的类型 根据计算结果估算。 然后根据传输线的类型优化提供给传输光的泵浦光的功率。

公开(公告)号：US20090195863A1

公开(公告)日：2009-08-06

申请号：US12285229

申请日：2008-09-30

申请人： Miki Onaka ,  Yasushi Sugaya ,  Togo Fukushi ,  Masanori Kondoh ,  Kiyotoshi Noheji ,  Takashi Hayasaka

发明人： Miki Onaka ,  Yasushi Sugaya ,  Togo Fukushi ,  Masanori Kondoh ,  Kiyotoshi Noheji ,  Takashi Hayasaka

IPC分类号： H01S3/00

CPC分类号： H04B10/2931 ,  H04B10/07953

摘要： A Raman amplifier inputs pump light into an optical fiber (transmission path) through which an optical signal passes, to amplify the optical signal. An optical receiving unit is provided downstream of the Raman amplifier and monitors the power of the optical signal amplified by the Raman amplifier. A calculating unit determines Raman amplification gain based on the power of the optical signal monitored by the optical receiving unit, and calculates the power of a noise component included in the optical signal based on the gain. The calculating unit, in real-time, calculates the power, which varies in complicated manners depending on conditions, and outputs information concerning to the power to another apparatus at a frequency on the order of milliseconds.

摘要翻译： 拉曼放大器将泵浦光输入到光信号通过的光纤（传输路径）中，以放大光信号。 光接收单元设置在拉曼放大器的下游，并监视由拉曼放大器放大的光信号的功率。 计算单元基于由光接收单元监视的光信号的功率来确定拉曼放大增益，并且基于增益计算包括在光信号中的噪声分量的功率。 计算单元实时地计算根据条件以复杂的方式变化的功率，并且以与毫秒数量级的频率将关于功率的信息输出到另一设备。

公开(公告)号：US20090190206A1

公开(公告)日：2009-07-30

申请号：US12360906

申请日：2009-01-28

申请人： Miki ONAKA ,  Kiyotoshi Noheji ,  Togo Fukushi ,  Masanori Kondoh

发明人： Miki ONAKA ,  Kiyotoshi Noheji ,  Togo Fukushi ,  Masanori Kondoh

IPC分类号： H01S3/00

CPC分类号： H01S3/302 ,  H01S3/094003 ,  H01S3/094096 ,  H01S3/0941 ,  H01S3/1301 ,  H01S2301/04 ,  H04B10/2916

摘要： A light amplifying device including a Raman amplifier to Raman-amplify a signal light by inputting excitation lights of a plurality of wavelengths to a transmission path through which the signal light propagates, a plurality of measuring units measuring powers of light output from the Raman amplifier in a plurality of wavelength bands included in an amplification band of the Raman amplifier, a calculating unit calculating a ratio of the respective powers measured by at least two of the plurality of measuring units, and a control unit controlling a power ratio of the respective excitation lights input to the transmission path by the Raman amplifier based on the ratio calculated by the calculating unit.

摘要翻译： 一种光放大装置，包括拉曼放大器，用于通过将多个波长的激发光输入到信号光传播的传输路径来对信号光进行拉曼放大;多个测量单元，测量从拉曼放大器输出的光的功率 包括在拉曼放大器的放大频带中的多个波长带，计算单元，其计算由所述多个测量单元中的至少两个测量的各个功率的比率;以及控制单元，其控制各个激励光的功率比 基于由计算单元计算的比率，由拉曼放大器输入到传输路径。

公开(公告)号：US20090213454A1

公开(公告)日：2009-08-27

申请号：US12365212

申请日：2009-02-04

申请人： Kiyotoshi Noheji ,  Masanori Kondoh ,  Miki Onaka ,  Togo Fukushi

发明人： Kiyotoshi Noheji ,  Masanori Kondoh ,  Miki Onaka ,  Togo Fukushi

IPC分类号： H01S3/30

CPC分类号： H04B10/2916 ,  H01S3/302

摘要： A Raman amplification apparatus includes a pumping light supplying section, a main signal wavelength light level acquisition section, a monitoring signal wavelength light level acquisition section, a function information storage section for storing, as function information, information regarding functions for deriving a noise amount and a gain by Raman amplification with regard to a monitoring signal wavelength light with respect to pumping light power supplied from the pumping light supplying section, and a transmission characteristic derivation section for deriving a transmission characteristic on an optical transmission line based on information acquired by the main signal wavelength light level acquisition section and the monitoring signal wavelength light level acquisition section and the function information stored in the function information storage section, and Raman gain is derived with high accuracy in comparison with the conventional technique.

摘要翻译： 拉曼放大装置包括：泵浦光供给部，主信号波长光级获取部，监视信号波长光级获取部，功能信息存储部，作为功能信息存储关于导出噪声量的功能的信息; 关于从泵浦光供给部提供的泵浦光功率的监视信号波长光的拉曼放大的增益，以及用于基于由主体获取的信息导出光传输线上的传输特性的传输特性导出部 信号波长光级获取部和监视信号波长光级获取部以及存储在功能信息存储部中的功能信息，并且与传统技术相比高精度地导出拉曼增益。

公开(公告)号：US20090195862A1

公开(公告)日：2009-08-06

申请号：US12254326

申请日：2008-10-20

申请人： Masanori KONDOH ,  Yasushi SUGAYA ,  Togo FUKUSHI ,  Miki ONAKA ,  Kiyotoshi NOHEJI

发明人： Masanori KONDOH ,  Yasushi SUGAYA ,  Togo FUKUSHI ,  Miki ONAKA ,  Kiyotoshi NOHEJI

IPC分类号： H01S3/13

CPC分类号： H01S3/302 ,  H01S3/06758 ,  H01S3/1305 ,  H01S3/2316

摘要： To obtain automatic gain control with high accuracy by including first and second light monitors, a reference light supplying unit supplying reference light of which wavelength is set within a gain band of a distributed Raman amplification and out of a wavelength band of main signal light to the optical transmission path, a first reference light monitor monitoring a power of the reference light input to the optical transmission path from one end side thereof, a second reference light monitor monitoring the power of the reference light output from the other end side of the optical transmission path, and a controlling unit controlling supply of pump light in a pump light supplying unit as well as supervising a state of the optical transmission path, based on monitor results from the first and second light monitor and the monitor results in the first and second reference light monitors.

摘要翻译： 为了通过包括第一和第二光监测器来高精度地获得自动增益控制，参考光供给单元将波长设定在分布的拉曼放大的增益带内并将主信号光的波长带之外的参考光提供给 光传输路径，第一参考光监视器，监视从其一端侧输入到光传输路径的参考光的功率;第二参考光监视器，监视从光传输的另一端输出的参考光的功率 路径，以及控制单元，其基于来自第一和第二光监视器的监视结果控制泵光供给单元中的泵浦光的供给以及监视光传输路径的状态，并且监视器得到第一和第二参考 光显示器。