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1. 发明申请

US20050057794A1 Raman excitation control method and optical transmission system using the same 审中-公开
标题翻译：拉曼激发控制方法和光传输系统使用相同
公开(公告)号：US20050057794A1
公开(公告)日：2005-03-17
申请号：US10703567
申请日：2003-11-10
申请人： Toshihiro Ohtani , Futoshi Izumi , Shota Mori , Tsukasa Takahashi , Hideki Kobayashi
发明人： Toshihiro Ohtani , Futoshi Izumi , Shota Mori , Tsukasa Takahashi , Hideki Kobayashi
IPC分类号： G02F1/35 , H01S3/094 , H01S3/0941 , H01S3/13 , H01S3/131 , H01S3/30 , H01S5/06 , H01S5/0683 , H04B10/071 , H04B10/077 , H04B10/29 , H04B10/294 , H04J14/00 , H04J14/02 , H01S3/00
CPC分类号： H04B10/2916 , H01S3/094096 , H01S3/1305 , H01S3/1312 , H01S3/302 , H01S5/0617 , H01S5/0683 , H04B10/0775 , H04B10/2537 , H04B2210/077
摘要： A Raman excitation control method enabling to reduce the number of couplers and photodetectors (PD) for providing an optical transmission unit with reduced cost The method is provided for use in optical amplification to amplify an optical signal using Raman excitation light fed into an optical transmission line. A backward light of a laser diode producing the Raman excitation light is monitored by an optical back power monitor. The monitored power value is compared with an initial set value stored in a memory for the laser diode. Based on this comparison result, a feedback control is performed against the light emission power of the laser diode.
摘要翻译：一种拉曼激励控制方法，能够减少用于提供光传输单元的耦合器和光电探测器（PD）的数量，降低了成本。该方法被提供用于光放大，以使用馈送到光传输线中的拉曼激发光来放大光信号。产生拉曼激发光的激光二极管的向后光由光反向功率监视器监视。将监视的功率值与存储在激光二极管的存储器中的初始设定值进行比较。基于该比较结果，针对激光二极管的发光功率进行反馈控制。

2. 发明授权

US06674567B2 Raman excitation control method and optical transmission system using the same 有权
标题翻译：拉曼激发控制方法和光传输系统使用相同
公开(公告)号：US06674567B2
公开(公告)日：2004-01-06
申请号：US09931078
申请日：2001-08-17
申请人： Toshihiro Ohtani , Futoshi Izumi , Shota Mori , Tsukasa Takahashi , Hideki Kobayashi
发明人： Toshihiro Ohtani , Futoshi Izumi , Shota Mori , Tsukasa Takahashi , Hideki Kobayashi
IPC分类号： H01S300
CPC分类号： H04B10/2916 , H01S3/094096 , H01S3/1305 , H01S3/1312 , H01S3/302 , H01S5/0617 , H01S5/0683 , H04B10/0775 , H04B10/2537 , H04B2210/077
摘要： A Raman excitation control method enabling to reduce the number of couplers and photodetectors (PD) for providing an optical transmission unit with reduced cost. The method is provided for use in optical amplification to amplify an optical signal using Raman excitation light fed into an optical transmission line. A backward light of a laser diode producing the Raman excitation light is monitored by an optical back power monitor. The monitored power value is compared with an initial set value stored in a memory for the laser diode. Based on this comparison result, a feedback control is performed against the light emission power of the laser diode.
摘要翻译：一种拉曼激励控制方法，其能够以降低的成本减少用于提供光传输单元的耦合器和光电探测器（PD）的数量。该方法被提供用于光放大，以使用馈送到光传输线中的拉曼激发光放大光信号。产生拉曼激发光的激光二极管的向后光由光反向功率监视器监视。将监视的功率值与存储在激光二极管的存储器中的初始设定值进行比较。基于该比较结果，针对激光二极管的发光功率进行反馈控制。

3. 发明授权

US06532102B2 Optical amplifier 有权
公开(公告)号：US06532102B2
公开(公告)日：2003-03-11
申请号：US09891205
申请日：2001-06-26
申请人： Hideki Kobayashi , Tsukasa Takahashi , Toshihiro Ohtani , Futoshi Izumi , Shota Mori
发明人： Hideki Kobayashi , Tsukasa Takahashi , Toshihiro Ohtani , Futoshi Izumi , Shota Mori
IPC分类号： H01S300
CPC分类号： H04B10/2918 , H04B10/03 , H04B10/0775 , H04B10/0777 , H04B10/2916 , H04B2210/078 , H04B2210/08
摘要： An optical amplifier and an optical multiplexing transmission system using the same are disclosed. Automatic restoration of the operation becomes possible and malfunctioning of an APSD function is prevented. The optical amplifier using Raman amplification includes; a Raman excitation light source for generating Raman light; and a detection circuit for detecting a signal error in an OSC (optical supervisory channel) signal transmitted in addition to optical transmission signal. When the detection circuit detects a bit error in the OSC signal, an output power from Raman excitation light source is controlled so as not to injure the human body.

4. 发明授权

US06864968B2 Method of measuring wavelength dispersion amount and optical transmission system 有权
标题翻译：测量波长色散量和光传输系统的方法
公开(公告)号：US06864968B2
公开(公告)日：2005-03-08
申请号：US10105163
申请日：2002-03-26
申请人： Shota Mori , Futoshi Izumi
发明人： Shota Mori , Futoshi Izumi
IPC分类号： G01M11/02 , G01M11/00 , H04B10/035 , H04B10/07 , H04B10/071 , H04B10/077 , H04B10/2525 , H04J14/00 , H04J14/02 , G01N21/00
CPC分类号： G01M11/332 , G01M11/335 , G01M11/338 , H04B10/0775 , H04B2210/071 , H04B2210/074 , H04B2210/078 , H04J14/02 , H04J14/0201
摘要： Measuring a wavelength dispersion amount of an optical transmission line without disconnecting the optical transmission line. A measuring signal is transmitted together with a main signal from a first node while the optical transmission line is in operation. The measuring signal is extracted and returned at an opposing node. A delay time required for the measuring signal to return is measured. A length of optical transmission line between the nodes is calculated from the measured delay time. A wavelength dispersion amount of the optical transmission line is calculated based on the calculated length.
摘要翻译：测量光传输线路的波长色散量，而不断开光传输线路。当光传输线处于工作状态时，测量信号与来自第一节点的主信号一起传输。测量信号被提取并在相对的节点返回。测量测量信号返回所需的延迟时间。从测量的延迟时间计算节点之间的光传输线路长度。基于计算出的长度计算光传输线的波长色散量。

5. 发明授权

US07209661B2 Wavelength multiplexing method and an apparatus thereof 有权
标题翻译：波长复用方法及其装置
公开(公告)号：US07209661B2
公开(公告)日：2007-04-24
申请号：US10686670
申请日：2003-10-17
申请人： Shota Mori , Futoshi Izumi
发明人： Shota Mori , Futoshi Izumi
IPC分类号： H04J14/00 , H04J14/02
CPC分类号： H04J14/0221 , G02B6/266 , H04B10/506 , H04B10/564 , H04J14/02 , H04J14/0201 , H04J14/0206 , H04J14/0212
摘要： An optical wavelength multiplexing apparatus is capable of controlling an attenuation amount of a variable optical attenuator at high speed, thereby preventing an optical level change generated by an upstream WDM section from flowing into a downstream WDM section.The high speed control is realized by providing a fast-operating local feedback loop for each variable optical attenuator in addition to a slower main feedback loop.
摘要翻译：光波分复用装置能够高速地控制可变光衰减器的衰减量，从而防止由上游WDM部分产生的光电平变化流入下游WDM部分。除了较慢的主反馈回路之外，通过为每个可变光衰减器提供快速操作的局部反馈回路来实现高速控制。

6. 发明授权

US08515288B2 Optical signal transmission control apparatus and optical signal transmission control method 有权
公开(公告)号：US08515288B2
公开(公告)日：2013-08-20
申请号：US12457762
申请日：2009-06-19
申请人： Futoshi Izumi
发明人： Futoshi Izumi
IPC分类号： H04B10/00
CPC分类号： H04J14/086
摘要： An optical signal transmission control apparatus that controls transmission of optical signals transmitted via a plurality of redundant routes. The optical signal transmission control apparatus includes a delay difference adjusting unit that adjusts a transmission delay difference between the optical signals of each route by converting a wavelength of the optical signal and making the optical signal with a converted wavelength pass through a waveguide in which a transmission delay of the optical signal changes continuously depending on the wavelength, and a waveform degradation compensating unit that compensates degradation of a waveform of the optical signal, while maintaining the transmission delay difference adjusted by the delay difference adjusting unit.

7. 发明授权

US07853151B2 Optical communication system, method, and optical transmitting station 有权
标题翻译：光通信系统，方法和光发射台
公开(公告)号：US07853151B2
公开(公告)日：2010-12-14
申请号：US11189810
申请日：2005-07-27
申请人： Futoshi Izumi
发明人： Futoshi Izumi
IPC分类号： H04B10/00 , H04J14/06
CPC分类号： H04B10/505 , H04B10/2572 , H04B10/5053 , H04B10/50597 , H04B10/58 , H04B10/66 , H04B2210/254 , H04J14/06
摘要： In an optical communication system, a pre-compensation is conducted for an influence of a polarization dispersion and a polarization dependent loss, which an optical signal transmitted from a transmitter station to a receiver station receives from a communication channel, at a transmitter station. The influence of the polarization dispersion and the polarization dependent loss from the transmission channel is cancelled when the receiver station receives the optical signal.
摘要翻译：在光通信系统中，对于在发射台处从发射台发射到接收站的光信号从通信信道接收到的偏振色散和偏振相关损耗的影响进行预补偿。当接收机站接收到光信号时，消除了偏振色散和来自传输信道的偏振相关损耗的影响。

8. 发明申请

US20090297154A1 Transmission-path-type specifying apparatus and transmission-path-type specifying method 有权
标题翻译：传输路径型指定装置和传输路径型指定方法
公开(公告)号：US20090297154A1
公开(公告)日：2009-12-03
申请号：US12314918
申请日：2008-12-18
申请人： Futoshi Izumi
发明人： Futoshi Izumi
IPC分类号： H04J14/02 , H04B10/00
CPC分类号： H04B10/0795 , G01M11/332 , G01M11/335 , H04J14/0201 , H04J14/0205 , H04J14/0212 , H04J14/0219 , H04J14/0221
摘要： A transmission-path-type specifying apparatus includes an optical filter that extracts a plurality of different wavelength components from light including wavelength components occurring at the time of communication; an optical switch that simultaneously transmits same pulse signals superposed on light of the extracted wavelength components. The apparatus also includes an ASE modulation controlling unit that obtains a delay-time difference among the transmitted pulse signals when arriving at a destination via a transmission path; a characteristic-value calculating unit that calculates a characteristic value of the transmission path corresponding to a reference time varied depending on the obtained delay-time difference and a type of the transmission path; and a fiber-type determining unit that specifies the type of the transmission path based on the calculated characteristic value.
摘要翻译：传输路径型指定装置包括从包括在通信时发生的波长分量的光中提取多个不同波长分量的滤光器; 同时发送叠加在所提取的波长分量的光上的相同脉冲信号的光学开关。该装置还包括：ASE调制控制单元，其经由传输路径到达目的地时获得所发送的脉冲信号之间的延迟时间差; 特征值计算单元，其计算与根据所获得的延迟时间差和所述传输路径的类型而变化的参考时间对应的传输路径的特性值; 以及光纤型确定单元，其基于所计算的特性值来指定所述传输路径的类型。

9. 发明授权

US07627207B2 Dispersion compensating method and dispersion compensating apparatus 失效
标题翻译：色散补偿方法和色散补偿装置
公开(公告)号：US07627207B2
公开(公告)日：2009-12-01
申请号：US11689946
申请日：2007-03-22
申请人： Masahiro Yoshimoto , Futoshi Izumi , Makoto Takakuwa
发明人： Masahiro Yoshimoto , Futoshi Izumi , Makoto Takakuwa
IPC分类号： G02B6/26 , G02B6/42 , H04B10/12
CPC分类号： H04B10/2935 , H04B10/25133 , H04B10/25253 , H04J14/0221
摘要： A dispersion compensating method for carrying out automatic level control with the use of target output power and an ASE correction value corresponding to the number of wavelengths to multiplex and making output power of a wavelength multiplexed signal constant, comprising the steps of: switching into automatic gain control in which the output power of the wavelength multiplexed signal is made constant, to carry out increase/decrease of the wavelengths to multiplex; varying a dispersion compensating amount based on the increase/decrease of the wavelengths by the automatic gain control; calculating an ASE variation amount due to the change in the dispersion compensating amount; and reflecting the ASE variation amount on the ASE correction value and switching into the automatic level control.
摘要翻译：一种色散补偿方法，用于通过使用目标输出功率进行自动电平控制，并且对应于波长数量的ASE校正值进行多路复用并使波长多路复用信号的输出功率恒定，包括以下步骤：切换到自动增益使波长多路复用信号的输出功率恒定的控制，以进行波长的增加/减少以进行多路复用; 基于通过自动增益控制的波长的增加/减少来改变色散补偿量; 计算由于色散补偿量的变化引起的ASE变化量; 并将ASE变化量反映在ASE校正值上并切换到自动电平控制。

10. 发明申请

US20050213986A1 Dispersion compensating method and dispersion compensating apparatus 有权
标题翻译：色散补偿方法和色散补偿装置
公开(公告)号：US20050213986A1
公开(公告)日：2005-09-29
申请号：US10885732
申请日：2004-07-08
申请人： Masahiro Yoshimoto , Makoto Takakuwa , Futoshi Izumi , Takahiro Hosokawa
发明人： Masahiro Yoshimoto , Makoto Takakuwa , Futoshi Izumi , Takahiro Hosokawa
IPC分类号： H04B10/2507 , G02B6/34 , H04B10/07 , H04B10/2519 , H04B10/2525 , H04J14/00 , H04J14/02 , H04B10/12
CPC分类号： H04B10/25133 , G02B6/29394
摘要： A dispersion compensating method for compensating wavelength dispersion occurring in an optical transmission line, includes the steps of: a) performing dispersion compensation by causing an optical signal, supplied from the transmission line, to pass through a variable dispersion compensator; and b) controlling a dispersion compensating amount in the variable dispersion compensator according to code error information corresponding to a type of code in a received data signal obtained from receiving the optical signal having undergone the dispersion compensation.
摘要翻译：一种用于补偿光传输线中发生的波长色散的色散补偿方法，包括以下步骤：a）通过使从传输线提供的光信号通过可变色散补偿器来执行色散补偿; 以及b）根据从接收已经进行色散补偿的光信号获得的接收数据信号中的代码类型对应的代码误差信息来控制可变色散补偿器中的色散补偿量。

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