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1. 发明授权

US08538264B2 Dispersion compensating apparatus, dispersion compensating method, optical receiving apparatus, and optical receiving method 有权
标题翻译：色散补偿装置，色散补偿方法，光接收装置和光接收方法
公开(公告)号：US08538264B2
公开(公告)日：2013-09-17
申请号：US12788773
申请日：2010-05-27
申请人： Masahiro Yuki , Tsukasa Takahashi , Miki Onaka , Norifumi Shukunami , Tatsuya Tsuzuki , Toshihiro Ohtani , Ryosuke Goto
发明人： Masahiro Yuki , Tsukasa Takahashi , Miki Onaka , Norifumi Shukunami , Tatsuya Tsuzuki , Toshihiro Ohtani , Ryosuke Goto
IPC分类号： H04B10/00 , H04B10/12 , H04J14/02
CPC分类号： H04B10/25133
摘要： A dispersion compensating apparatus includes a tunable dispersion compensator that dispersion-compensates an optical signal using a group delay property that is asymmetrical in bands outside an effective band; a set device that sets a dispersion compensation amount in the tunable dispersion compensator; and a shifter that shifts a central frequency of the effective band of the tunable dispersion compensator, based on the dispersion compensation amount set by the set device.
摘要翻译：色散补偿装置包括可调色散补偿器，其使用在有效频带之外的频带中不对称的组延迟特性对光信号进行色散补偿; 设置可调色散补偿器中的色散补偿量的集合装置; 以及基于由所述设定装置设定的色散补偿量，使所述可调色散补偿器的有效频带的中心频率偏移的移位器。

2. 发明授权

US08306427B2 WDM transmission apparatus, optical add-drop multiplexer and WDM transmission method 有权
标题翻译： WDM传输设备，光分插复用器和WDM传输方式
公开(公告)号：US08306427B2
公开(公告)日：2012-11-06
申请号：US12640387
申请日：2009-12-17
申请人： Ryosuke Goto , Takehiro Fujita
发明人： Ryosuke Goto , Takehiro Fujita
IPC分类号： H04J14/02
CPC分类号： H04J14/0221 , H04B10/07955 , H04B10/2941 , H04J14/0212
摘要： There is provided a WDM transmission apparatus including a calculator being operable to calculate an optical signal level of a wavelength after wavelength demultiplexing based on information of OSNR, an amplifier controller being operable to compensate for the optical signal levels of all the wavelengths after wavelength demultiplexing to become a target level based on an optical signal level calculated by the calculator, and an deviation corrector being operable to correct a deviation of an optical signal level between each wavelength based on the optical signal level calculated by the calculator.
摘要翻译：提供了一种WDM传输装置，包括：计算器，用于根据OSNR的信息计算波长解复用后的波长的光信号电平;放大器控制器，用于补偿波长解复用后的所有波长的光信号电平; 基于由计算器计算的光信号电平成为目标电平，偏差校正器可用于根据由计算器计算出的光信号电平来校正每个波长之间的光信号电平的偏差。

3. 发明申请

US20080080857A1 OSNR MEASURING APPARATUS AND OSNR MEASURING METHOD 有权
标题翻译： OSNR测量装置和OSNR测量方法
公开(公告)号：US20080080857A1
公开(公告)日：2008-04-03
申请号：US11830950
申请日：2007-07-31
申请人： Ryosuke GOTO
发明人： Ryosuke GOTO
IPC分类号： H04B10/08 , H04B17/00
CPC分类号： H04B10/07953
摘要： An apparatus for measuring an OSNR for a communication channel in a WDM optical communications system includes a signal control unit, a receiving unit, and a measuring unit. The signal control unit controls spectral width reduction for an optical signal sent through a target channel. The receiving unit receives spectral data measured from the optical signal received by the target channel under control of the control unit. The measuring unit, based on the spectral data received by the receiving unit, measures the OSNR of the target channel.
摘要翻译：用于测量WDM光通信系统中的通信信道的OSNR的装置包括信号控制单元，接收单元和测量单元。信号控制单元控制通过目标通道发送的光信号的频谱宽度减小。接收单元在控制单元的控制下接收由目标信道接收的光信号测量的频谱数据。测量单元基于由接收单元接收的频谱数据来测量目标信道的OSNR。

4. 发明申请

US20060124842A1 Measuring method and measuring apparatus for coherent crosstalk light 失效
标题翻译：相干串扰光的测量方法和测量装置
公开(公告)号：US20060124842A1
公开(公告)日：2006-06-15
申请号：US11083015
申请日：2005-03-18
申请人： Ryosuke Goto , Motoyoshi Sekiya
发明人： Ryosuke Goto , Motoyoshi Sekiya
IPC分类号： G01N21/25
CPC分类号： G01M11/333
摘要： An apparatus for measuring coherent crosstalk (CXT) light of the invention generates in a light source section, measurement light which has been modulated to a sawtooth wave shape and applies this to an object of measurement; sends transmission light and CXT light emerging from the object of measurement to a light receiving section via a variable optical attenuator; applies an electrical signal photoelectric-converted in an optical receiver, to a frequency filter, to thereby extract a beat component corresponding to a frequency difference between the transmission light and CXT light; controls the modulation period of the measurement light so that the power of the beat component becomes a local maximum; varies an optical attenuation amount of a variable optical attenuator, while keeping constant the optimized modulation period; and measures with high accuracy the amount of CXT light generated in the object of measurement, based on a rate of variation in the power of the beat component caused at that time.
摘要翻译：本发明的测量相干串扰（CXT）光的装置在光源部分产生已被调制成锯齿波形并将其应用于测量对象的测量光; 通过可变光衰减器将从测量对象出射的发射光和CXT光发送到光接收部分; 将在光接收机中光电转换的电信号应用于频率滤波器，从而提取与传输光和CXT光之间的频率差对应的拍子成分; 控制测量光的调制周期，使得拍子组件的功率变成局部最大值; 改变可变光衰减器的光衰减量，同时保持恒定的优化调制周期; 并且基于当时引起的节拍分量的功率的变化率，高精度地测量在测量对象中产生的CXT光的量。

5. 发明申请

US20060012786A1 Optical measurement device 有权
标题翻译：光学测量装置
公开(公告)号：US20060012786A1
公开(公告)日：2006-01-19
申请号：US10992014
申请日：2004-11-19
申请人： Ryosuke Goto , Motoyoshi Sekiya
发明人： Ryosuke Goto , Motoyoshi Sekiya
IPC分类号： G01J3/28
CPC分类号： G01J3/18 , G01J3/027 , G01J3/04 , G01J3/1895 , G01J3/453
摘要： An optical measurement device capable of improving optical spectrum measurement accuracy without the need to structurally decrease a slit width. A diffraction grating for dispersing measurement light into respective different wavelengths is rotated in a given direction to produce diffracted light of selected wavelengths. A focusing lens converges the diffracted light to produce a converged beam. A slit control section varies the slit width at a constant scan speed to open or close the slit, thereby varying the passing bandwidth for the converged beam. A light receiving/measuring section receives the light passed through the slit, obtains a level function indicative of the power level of the received light that varies with change in optical frequency, and differentiates the level function by the scan speed to reproduce the spectrum profile of the measurement light.
摘要翻译：一种能够提高光谱测量精度而不需要在结构上减小狭缝宽度的光学测量装置。用于将测量光分散到各个不同波长的衍射光栅在给定方向上旋转以产生所选波长的衍射光。聚焦透镜会聚衍射光以产生会聚光束。狭缝控制部分以恒定的扫描速度改变狭缝宽度以打开或关闭狭缝，从而改变会聚束的通过带宽。光接收/测量部分接收通过狭缝的光，获得指示随着光频率的变化而变化的接收光的功率电平的电平函数，并且将电平函数除以扫描速度，以再现频谱分布测量灯。

6. 发明授权

US07031049B2 Loss point detecting method and distributed raman amplifier applying the same 失效
标题翻译：损耗点检测方法和分布式拉曼放大器应用相同
公开(公告)号：US07031049B2
公开(公告)日：2006-04-18
申请号：US10699698
申请日：2003-11-04
申请人： Takashi Kamada , Motoyoshi Sekiya , Ryosuke Goto
发明人： Takashi Kamada , Motoyoshi Sekiya , Ryosuke Goto
IPC分类号： H01S3/00 , H04B10/12 , H04B10/08 , H04B17/00
CPC分类号： H01S3/302 , H01S3/06754 , H01S3/1301
摘要： Power of scattered light separated from an optical transmission path is monitored, part of the excitation light is separated and power thereof is monitored, power of reflected light which passes in a direction opposite to a direction in which signal light passes through the optical transmission path is monitored, and, when monitored power of an excitation light reaches a predetermined determination value, whether or not any loss point occurs is determined, based on a ratio between the monitored power of the scattered light and the monitored power of the reflected light.
摘要翻译：监测从光传输路径分离的散射光的功率，分离激发光的一部分并监视其功率，反射光的通过方向与信号光通过光传输路径的方向相反的方向的功率为并且当激发光的监视功率达到预定的确定值时，基于所监视的散射光的功率与所检测的反射光的功率之间的比率来确定是否发生任何损耗点。

7. 发明授权

US08068730B2 Wavelength division multiplex signal monitoring system and wavelength division multiplex transmission device equipped with the same 有权
标题翻译：波分多路复用信号监控系统和波分复用传输设备配备相同
公开(公告)号：US08068730B2
公开(公告)日：2011-11-29
申请号：US12219862
申请日：2008-07-29
申请人： Yoshito Kachita , Ichiro Nakajima , Yasushi Sugaya , Ryosuke Goto
发明人： Yoshito Kachita , Ichiro Nakajima , Yasushi Sugaya , Ryosuke Goto
IPC分类号： H04B10/08
CPC分类号： H04B10/07955 , H04J14/0212 , H04J14/0221
摘要： A WDM signal monitoring system includes a measuring unit that measures power levels in a plurality of predetermined wavelength bands about a wavelength division multiplex signal, a waveform determination unit that determines an approximate waveform of each channel from each bit rate and modulation system of a plurality of channels which forms a wavelength division multiplex signal, and an approximation unit that determines a power level and a wavelength of each channel by approximating the power level in a plurality of wavelength bands which the measuring unit measured with the approximate waveform of each channel which the waveform determination unit determined.
摘要翻译： WDM信号监视系统包括测量单元，其测量关于波分多路复用信号的多个预定波长带中的功率电平;波形确定单元，其从每个比特率和多个调制系统的调制系统确定每个信道的近似波形形成波分复用信号的通道，以及近似单元，其通过近似多个波长带中的功率电平来确定每个通道的功率电平和波长，所述多个波长带中测量单元用每个通道的近似波形测量波形确定单位确定。

8. 发明申请

US20110058821A1 OPTICAL TRANSMISSION APPARATUS, OPTICAL TRANSMISSION SYSTEM, AND OPTICAL TRANSMISSION METHOD 有权
标题翻译：光传输装置，光传输系统和光传输方法
公开(公告)号：US20110058821A1
公开(公告)日：2011-03-10
申请号：US12879247
申请日：2010-09-10
申请人： Ryosuke GOTO
发明人： Ryosuke GOTO
IPC分类号： H04B10/04 , H04B10/12
CPC分类号： H04B10/0797 , H04B10/2916 , H04B10/2931
摘要： An optical transmission apparatus in an optical transmission system that transmits an optical signal through a transmission fiber includes a measurement device that measures Raman gain efficiency of the transmission fiber; a level determiner that determines an input level of the optical signal based on Raman gain efficiency measured by the measurement device; and a controller that controls a level of the optical signal input to the transmission fiber to become the input level determined by the level determiner.
摘要翻译：通过传输光纤发送光信号的光传输系统中的光传输装置包括测量传输光纤的拉曼增益效率的测量装置; 电平确定器，其基于由所述测量装置测量的拉曼增益效率来确定所述光信号的输入电平; 以及控制器，其控制输入到传输光纤的光信号的电平成为由电平确定器确定的输入电平。

9. 发明申请

US20080199182A1 Transmission system and transmission method 有权
标题翻译：传输系统及传输方式
公开(公告)号：US20080199182A1
公开(公告)日：2008-08-21
申请号：US12068026
申请日：2008-01-31
申请人： Hiroki Ooi , Akira Miura , Takeshi Hoshida , Kentaro Nakamura , Yasushi Sugaya , Ryosuke Goto
发明人： Hiroki Ooi , Akira Miura , Takeshi Hoshida , Kentaro Nakamura , Yasushi Sugaya , Ryosuke Goto
IPC分类号： H04J14/02
CPC分类号： H04J14/02 , H04B10/2513 , H04B10/2557 , H04J14/0201
摘要： A wavelength division multiplexing system according to the present art adjusts the amount of dispersion compensation (the amount of dispersion compensation of an NZ-DSF and a DCF) every all spans on the basis of the time slot when an intensity modulation signal transmitter outputs an intensity modulation signal and the wavelength interval when a wavelength coupler multiplexes a phase modulation signal (output from a phase modulation signal transmitter) and the intensity modulation signal.
摘要翻译：根据本发明的波分复用系统根据强度调制信号发射机输出强度的时隙，调整每个跨度的色散补偿量（NZ-DSF和DCF的色散补偿量）调制信号和波长耦合器复用相位调制信号（相位调制信号发射机的输出）和强度调制信号的波长间隔。

10. 发明申请

US20080170286A1 Supervisory control light transmitting method for a wavelength division multiplexing transmission system and wavelength division multiplexing transmission apparatus 审中-公开
标题翻译：波分复用传输系统和波分复用传输装置的监控光传输方法
公开(公告)号：US20080170286A1
公开(公告)日：2008-07-17
申请号：US12076402
申请日：2008-03-18
申请人： Ryosuke Goto
发明人： Ryosuke Goto
IPC分类号： G02B26/02 , H04J3/06
CPC分类号： H04J14/0221 , H04B10/0775 , H04J14/0227
摘要： In a wavelength division multiplexing transmission system having an optical transmission path which transmits wavelength division multiplexed light that is main signal light, supervisory control light is transmitted through the optical transmission path in the direction opposite to the direction of the main signal light. As a result, it is possible to restrain attenuation of the supervisory control light due to a Raman scattering phenomenon, thereby increasing a relay distance.
摘要翻译：在具有发送作为主信号光的波分复用光的光传输路径的波分复用传输系统中，监控光通过光传输路径沿与主信号光方向相反的方向传输。结果，可以抑制由于拉曼散射现象引起的监控光的衰减，从而增加中继距离。

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