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1. 发明授权

US07139117B2 Optical transmission apparatus 有权
标题翻译：光传输装置
公开(公告)号：US07139117B2
公开(公告)日：2006-11-21
申请号：US10793099
申请日：2004-03-05
申请人： Eisuke Nakamura , Makoto Murakami , Kiyotoshi Noheji
发明人： Eisuke Nakamura , Makoto Murakami , Kiyotoshi Noheji
IPC分类号： H01S4/00 , H04B10/12
CPC分类号： H04B10/2942 , H04B10/2916
摘要： An optical transmission apparatus that improves optical transmission quality by performing an optical noise correction and optical level detection with great precision. A first optical amplifier performs optical amplification with an optical fiber transmission line as an amplification medium. A second optical amplifier inputs second excitation light into an amplification medium in which an active substance for optical amplification is doped to perform optical amplification. A first optical level detector monitors, before transmitting an optical signal, a level of optical noise scattered by the first optical amplifier by emitting first excitation light in an operating environment and detects an optical level at the time of transmitting the optical signal by subtracting the level of the optical noise from a signal amplified by the first optical amplifier. A second optical level detector monitors, before transmitting an optical signal, a level of optical noise emitted from the second optical amplifier by emitting the second excitation light in the operating environment and detects an optical level at the time of transmitting the optical signal by subtracting the level of the optical noise from a signal amplified by the second optical amplifier.
摘要翻译：一种通过以高精度执行光学噪声校正和光学水平检测来提高光传输质量的光传输装置。第一光放大器利用光纤传输线作为放大介质进行光放大。第二光放大器将第二激发光输入到其中掺杂用于光放大的活性物质进行光放大的放大介质中。第一光学电平检测器在发送光信号之前，通过在操作环境中发射第一激发光来监测由第一光放大器散射的光噪声水平，并且通过减去光信号的发送时检测光电平的来自由第一光放大器放大的信号的光噪声。第二光学电平检测器在发送光信号之前通过在操作环境中发射第二激发光来监测从第二光放大器发射的光噪声水平，并通过减去光信号的发送来检测光电平来自由第二光放大器放大的信号的光噪声的电平。

2. 发明申请

US20090213454A1 RAMAN AMPLIFICATION APPARATUS AND DISTRIBUTED RAMAN AMPLIFICATION SYSTEM AS WELL AS STARTING UP METHOD FOR DISTRIBUTED RAMAN AMPLIFICATION SYSTEM 有权
标题翻译：拉曼放大装置和分布式拉曼放大系统以及分布式拉曼放大系统的启动方法
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。

3. 发明申请

US20090080901A1 Dispersion compensating apparatus and dispersion compensating method 有权
标题翻译：色散补偿装置和色散补偿方法
公开(公告)号：US20090080901A1
公开(公告)日：2009-03-26
申请号：US12292956
申请日：2008-12-01
申请人： Akira Miura , Hiroki Ooi , Kiyotoshi Noheji
发明人： Akira Miura , Hiroki Ooi , Kiyotoshi Noheji
IPC分类号： H04B10/00
CPC分类号： G02B6/29394 , G02B6/29358
摘要： In a dispersion compensating apparatus, a reference identifying unit identifies a reference (X dB down) that makes a penalty lower than a predetermined value in accordance with optical signal information and a reference identifying table, and a VIPA plate temperature adjusting unit adjusts a refractive index of a VIPA plate by modifying a temperature of the VIPA plate so that a transmission center wavelength derived from the reference matches the wavelength defined by an ITU-T Grid. If a dispersion compensation value setting unit performs an optimal residual dispersion value search, the VIPA plate temperature adjusting unit determines if a filtering penalty is lower than a predetermined value in accordance with a penalty management table. If the filtering penalty is lower than the predetermined value, temperature adjustment of the VIPA plate is not performed.
摘要翻译：在色散补偿装置中，基准识别单元根据光信号信息和基准识别表来识别使罚分低于预定值的参考（X dB down），VIPA板温度调节单元调节折射率的VIPA板，通过改变VIPA板的温度，使得从基准导出的透射中心波长与ITU-T网格定义的波长匹配。如果色散补偿值设定单元执行最佳残余色散值搜索，则VIPA板温度调节单元根据惩罚管理表确定过滤罚分是否低于预定值。如果过滤罚分低于预定值，则不执行VIPA板的温度调节。

4. 发明授权

US08248689B2 Distributed Raman amplifying system, start-up method thereof, and optical device 有权
标题翻译：分布式拉曼放大系统，其启动方法和光学器件
公开(公告)号：US08248689B2
公开(公告)日：2012-08-21
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： H01S3/30 , H04B10/17 , H04B10/12
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。

5. 发明申请

US20090190205A1 RAMAN AMPLIFYING DEVICE AND CONTROL METHOD 审中-公开
公开(公告)号：US20090190205A1
公开(公告)日：2009-07-30
申请号：US12360876
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： H01S3/30 , G02B27/00
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.

6. 发明申请

US20090190204A1 Wavelength division multiplexing optical transmission system utilizing distributed raman amplification 有权
标题翻译：波分复用光传输系统利用分布式拉曼放大
公开(公告)号：US20090190204A1
公开(公告)日：2009-07-30
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： H01S3/30
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。

7. 发明申请

US20080013964A1 Optical reception apparatus 有权
标题翻译：光接收装置
公开(公告)号：US20080013964A1
公开(公告)日：2008-01-17
申请号：US11819737
申请日：2007-06-28
申请人： Kiyotoshi Noheji
发明人： Kiyotoshi Noheji
IPC分类号： H04B10/06
CPC分类号： H04L7/0075 , H04B10/66 , H04L7/02
摘要： An optical reception apparatus according to the present invention comprises: a branching section that branches an optical signal input thereto into two; first and second delay interferometers arranged on optical paths through which the branched lights are propagated; first and second photoelectric converting sections that receive the output lights from the delay interferometers; a clock recovery circuit for recovering a clock signal based on a data signal output from one of the photoelectric converting sections; a multiplexing section that multiplexes data signals from the photoelectric converting sections in accordance with the clock signal; and a delay interferometer control section that resets operating conditions of the delay interferometers when the frame synchronization is not achieved. Thus, it becomes possible to perform the demodulation processing on the signal light which is differential phase shift keying modulated using a quadrature phase component, utilizing a general-purpose framer.
摘要翻译：根据本发明的光接收装置包括：分支部分，其将输入的光信号分成两部分; 第一和第二延迟干涉仪布置在通过分支光传播的光路上; 从延迟干涉仪接收输出光的第一和第二光电转换部分; 时钟恢复电路，用于基于从一个光电转换部分输出的数据信号来恢复时钟信号; 多路复用部分，根据时钟信号复用来自光电转换部分的数据信号; 以及延迟干涉仪控制部分，当没有实现帧同步时，其重置延迟干涉仪的操作条件。因此，利用通用成帧器，可以对使用正交相位分量调制的差分相移键控的信号光执行解调处理。

8. 发明授权

US08351800B2 Optical receiver and clock generation method 有权
标题翻译：光接收机和时钟生成方法
公开(公告)号：US08351800B2
公开(公告)日：2013-01-08
申请号：US13033994
申请日：2011-02-24
申请人： Kiyotoshi Noheji , Noriaki Mizuguchi
发明人： Kiyotoshi Noheji , Noriaki Mizuguchi
IPC分类号： H04B10/06
CPC分类号： H04B10/25133 , H04B10/671 , H04B2210/252
摘要： An optical receiver includes a dispersion mitigator configured to mitigate a wavelength dispersion value in an optical signal by using a set dispersion value, a phase difference signal generator configured to generate a phase difference signal by calculating the phase difference between a first clock signal included in an optical signal mitigated by the dispersion mitigator, and a second clock signal, a dispersion value adjuster configured to adjust the set dispersion value set in the mitigator, a controller configured to control fluctuations appearing in a phase difference signal generated by the phase difference signal generator when the dispersion value is adjusted by the dispersion value adjuster, and a clock generator configured to generate the second clock follow up the phase of the first clock, being based on the phase difference signal controlled by the controller.
摘要翻译：一种光接收机包括：配置成通过使用设定色散值来减轻光信号中的波长色散值的色散信号发生器;相位差信号发生器，被配置为通过计算包括在第一时钟信号中的第一时钟信号之间的相位差产生相位差信号由色散减轻器减轻的光信号和第二时钟信号，被配置为调整在减光器中设置的设定色散值的色散值调节器，配置为控制由相位差信号发生器产生的相位差信号中出现的波动的控制器，色散值由色散值调节器调节，并且时钟发生器被配置为基于由控制器控制的相位差信号产生第二时钟跟随第一时钟的相位。

9. 发明授权

US08306430B2 Dispersion compensating apparatus and dispersion compensating method 有权
标题翻译：色散补偿装置和色散补偿方法
公开(公告)号：US08306430B2
公开(公告)日：2012-11-06
申请号：US12292956
申请日：2008-12-01
申请人： Akira Miura , Hiroki Ooi , Kiyotoshi Noheji
发明人： Akira Miura , Hiroki Ooi , Kiyotoshi Noheji
IPC分类号： H04B10/00
CPC分类号： G02B6/29394 , G02B6/29358
摘要： In a dispersion compensating apparatus, a reference identifying unit identifies a reference (X dB down) that makes a penalty lower than a predetermined value in accordance with optical signal information and a reference identifying table, and a VIPA plate temperature adjusting unit adjusts a refractive index of a VIPA plate by modifying a temperature of the VIPA plate so that a transmission center wavelength derived from the reference matches the wavelength defined by an ITU-T Grid. If a dispersion compensation value setting unit performs an optimal residual dispersion value search, the VIPA plate temperature adjusting unit determines if a filtering penalty is lower than a predetermined value in accordance with a penalty management table. If the filtering penalty is lower than the predetermined value, temperature adjustment of the VIPA plate is not performed.
摘要翻译：在色散补偿装置中，基准识别单元根据光信号信息和基准识别表来识别使罚分低于预定值的参考（X dB down），VIPA板温度调节单元调节折射率的VIPA板，通过改变VIPA板的温度，使得从基准导出的透射中心波长与ITU-T网格定义的波长匹配。如果色散补偿值设定单元执行最佳残余色散值搜索，则VIPA板温度调节单元根据惩罚管理表确定过滤罚分是否低于预定值。如果过滤罚分低于预定值，则不执行VIPA板的温度调节。

10. 发明授权

US08139285B2 Raman amplifying device and control method 有权
标题翻译：拉曼放大器及其控制方法
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。

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