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公开(公告)号：US07848659B2
公开(公告)日：2010-12-07
申请号：US11298892
申请日：2005-12-12
申请人： Akira Miura , Kentaro Nakamura , Hiroshi Onaka , Yuichi Akiyama , Hiroki Ooi , Jens Rasmussen , Takeshi Hoshida
发明人： Akira Miura , Kentaro Nakamura , Hiroshi Onaka , Yuichi Akiyama , Hiroki Ooi , Jens Rasmussen , Takeshi Hoshida
IPC分类号： H04B10/04
CPC分类号： G02F1/0123 , G02F1/2255 , H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/50575 , H04B10/50577 , H04B10/50597 , H04B10/58
摘要： A data modulator unit generates a DQPSK optical signal in accordance with a data signal. A phase shift unit provides a phase difference of π/2 between a pair of arms. A photodetector converts an output signal of the data modulator unit into an electrical signal. A filter is a low-pass filter with a cut-off frequency lower than a symbol frequency, and filters an output signal of the photodetector. A monitor unit detects power of an output signal of the filter. A phase difference control unit adjusts the amount of phase shift in the phase shift unit so as to minimize power of an output signal of the filter.
摘要翻译： 数据调制器单元根据数据信号产生DQPSK光信号。 相移单元在一对臂之间提供＆pgr / / 2的相位差。 光电检测器将数据调制器单元的输出信号转换为电信号。 滤波器是具有低于符号频率的截止频率的低通滤波器，并对光电检测器的输出信号进行滤波。 监视器单元检测滤波器的输出信号的功率。 相位差控制单元调整相移单元中的相移量，以使滤波器的输出信号的功率最小化。
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2.发明授权公开(公告)号：US07769299B2
公开(公告)日：2010-08-03
申请号：US11475046
申请日：2006-06-27
申请人： Hiroki Ooi , Akira Miura , Hiroshi Onaka
发明人： Hiroki Ooi , Akira Miura , Hiroshi Onaka
CPC分类号： G01M11/333 , G01M11/338 , H04B10/07951 , H04B10/2513
摘要： A chromatic dispersion monitoring apparatus according to the present invention comprises: a photodetector which photo-electrically converts an optical signal; a low-pass filter which limits a frequency bandwidth of the photo-electrically converted electrical signal to be within a range set according to a modulation format of the optical signal and a bit rate thereof; a DC elimination circuit which eliminates a direct current component of the bandwidth limited electrical signal; and a power detector which detects the power of the bandwidth limited electrical signal to detect the residual dispersion of the optical signal. As a result, it becomes possible to easily realize the chromatic dispersion monitoring apparatus of low cost, which is also capable to be arranged on an in-line.
摘要翻译： 根据本发明的色散监视装置包括：光电转换光信号的光电检测器; 将光电转换电信号的频带宽度限制在根据光信号的调制格式及其比特率设定的范围内的低通滤波器; DC消除电路，其消除带宽受限电信号的直流分量; 以及功率检测器，其检测带宽受限电信号的功率，以检测光信号的残余色散。 结果，可以容易地实现也能够排列在一起的低成本的色散监视装置。
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公开(公告)号：US20070065161A1
公开(公告)日：2007-03-22
申请号：US11298892
申请日：2005-12-12
申请人： Akira Miura , Kentaro Nakamura , Hiroshi Onaka , Yuichi Akiyama , Hiroki Ooi , Jens Rasmussen , Takeshi Hoshida
发明人： Akira Miura , Kentaro Nakamura , Hiroshi Onaka , Yuichi Akiyama , Hiroki Ooi , Jens Rasmussen , Takeshi Hoshida
IPC分类号： H04B10/04
CPC分类号： G02F1/0123 , G02F1/2255 , H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/50575 , H04B10/50577 , H04B10/50597 , H04B10/58
摘要： A data modulator unit generates a DQPSK optical signal in accordance with a data signal. A phase shift unit provides a phase difference of π/2 between a pair of arms. A photodetector converts an output signal of the data modulator unit into an electrical signal. A filter is a low-pass filter with a cut-off frequency lower than a symbol frequency, and filters an output signal of the photodetector. A monitor unit detects power of an output signal of the filter. A phase difference control unit adjusts the amount of phase shift in the phase shift unit so as to minimize power of an output signal of the filter.
摘要翻译： 数据调制器单元根据数据信号产生DQPSK光信号。 相移单元提供一对臂之间的π/ 2的相位差。 光电检测器将数据调制器单元的输出信号转换为电信号。 滤波器是具有低于符号频率的截止频率的低通滤波器，并对光电检测器的输出信号进行滤波。 监视器单元检测滤波器的输出信号的功率。 相位差控制单元调整相移单元中的相移量，以使滤波器的输出信号的功率最小化。
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4.发明申请公开(公告)号：US20070177876A1
公开(公告)日：2007-08-02
申请号：US11475046
申请日：2006-06-27
申请人： Hiroki Ooi , Akira Miura , Hiroshi Onaka
发明人： Hiroki Ooi , Akira Miura , Hiroshi Onaka
IPC分类号： H04B10/12
CPC分类号： G01M11/333 , G01M11/338 , H04B10/07951 , H04B10/2513
摘要： A chromatic dispersion monitoring apparatus according to the present invention comprises: a photodetector which photo-electrically converts an optical signal; a low-pass filter which limits a frequency bandwidth of the photo-electrically converted electrical signal to be within a range set according to a modulation format of the optical signal and a bit rate thereof; a DC elimination circuit which eliminates a direct current component of the bandwidth limited electrical signal; and a power detector which detects the power of the bandwidth limited electrical signal to detect the residual dispersion of the optical signal. As a result, it becomes possible to easily realize the chromatic dispersion monitoring apparatus of low cost, which is also capable to be arranged on an in-line.
摘要翻译： 根据本发明的色散监视装置包括：光电转换光信号的光电检测器; 将光电转换电信号的频带宽度限制在根据光信号的调制格式及其比特率设定的范围内的低通滤波器; DC消除电路，其消除带宽受限电信号的直流分量; 以及功率检测器，其检测带宽受限电信号的功率，以检测光信号的残余色散。 结果，可以容易地实现也能够排列在一起的低成本的色散监视装置。
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5.发明授权公开(公告)号：US07869715B2
公开(公告)日：2011-01-11
申请号：US11785896
申请日：2007-04-20
申请人： Hiroki Ooi , Hiroshi Onaka , Takeshi Hoshida
发明人： Hiroki Ooi , Hiroshi Onaka , Takeshi Hoshida
IPC分类号： H04B10/12
CPC分类号： H04B10/25133
摘要： A variable dispersion compensating unit compensates an optical signal, and changes the compensation amount according to a control signal that has a given frequency. After demodulation of the compensated optical signal, error conditions of the signal are monitored and an error signal is output. A band pass filter filters the error signal for a component having a frequency equal to or less than the given frequency. Based on the component and on the control signal, a synchronous detecting circuit generates a compensation amount modification signal. The compensation amount modification signal is superposed on the control signal.
摘要翻译： 可变色散补偿单元补偿光信号，并根据具有给定频率的控制信号改变补偿量。 在对补偿的光信号进行解调之后，监视信号的误差状况并输出误差信号。 带通滤波器滤波具有等于或小于给定频率的频率的分量的误差信号。 基于分量和控制信号，同步检测电路产生补偿量修正信号。 补偿量修正信号叠加在控制信号上。
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6.发明授权公开(公告)号：US08213798B2
公开(公告)日：2012-07-03
申请号：US12688137
申请日：2010-01-15
申请人： Hiroki Ooi , Hiroshi Onaka , George Ishikawa
发明人： Hiroki Ooi , Hiroshi Onaka , George Ishikawa
IPC分类号： H04J14/02
CPC分类号： H04B10/2557 , H04J14/02
摘要： An optical transmission apparatus for suppressing deterioration of transmission quality due to XPM in a wavelength division multiplexing optical communication system in which an intensity modulation optical signal and a phase modulation optical signal exist in a mixed form. The apparatus has an intensity inversion signal light output section which outputs light having an intensity pattern obtained by inverting intensity changes of the intensity modulation optical signal near a wavelength of the intensity modulation optical signal in arrangement on wavelength axis of optical wavelengths that can be multiplexed as a wavelength division multiplexed signal as intensity inversion signal light, and a wavelength division multiplexed optical signal output unit which wavelength-division-multiplexes the intensity modulation optical signal, the phase modulation optical signal and light from the intensity inversion signal light output section and outputs a wavelength division multiplexed optical signal.
摘要翻译： 一种光传输装置，用于在混合形式存在强度调制光信号和相位调制光信号的波分复用光通信系统中抑制由XPM导致的传输质量的恶化。 该装置具有强度反转信号光输出部，其输出具有通过将强度调制光信号的波长附近的强度调制光信号的强度变化反转的强度图形输出的光配置在可以多路复用的光波长的波长轴上 波分多路复用信号作为强度反转信号光，以及波分复用光信号输出单元，其对强度调制光信号，相位调制光信号和强度反转信号光输出部分的光进行波分复用，并输出 波分复用光信号。
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7.发明申请公开(公告)号：US20080056710A1
公开(公告)日：2008-03-06
申请号：US11785896
申请日：2007-04-20
申请人： Hiroki Ooi , Hiroshi Onaka , Takeshi Hoshida
发明人： Hiroki Ooi , Hiroshi Onaka , Takeshi Hoshida
IPC分类号： H04B17/00
CPC分类号： H04B10/25133
摘要： A variable dispersion compensating unit compensates an optical signal, and changes the compensation amount according to a control signal that has a given frequency. After demodulation of the compensated optical signal, error conditions of the signal are monitored and an error signal is output. A band pass filter filters the error signal for a component having a frequency equal to or less than the given frequency. Based on the component and on the control signal, a synchronous detecting circuit generates a compensation amount modification signal. The compensation amount modification signal is superposed on the control signal.
摘要翻译： 可变色散补偿单元补偿光信号，并根据具有给定频率的控制信号改变补偿量。 在对补偿的光信号进行解调之后，监视信号的误差状况并输出误差信号。 带通滤波器滤波具有等于或小于给定频率的频率的分量的误差信号。 基于分量和控制信号，同步检测电路产生补偿量修正信号。 补偿量修正信号叠加在控制信号上。
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8.发明授权公开(公告)号：US08867927B2
公开(公告)日：2014-10-21
申请号：US12879820
申请日：2010-09-10
申请人： Yuichi Akiyama , Takeshi Hoshida , Akira Miura , Yutaka Kai , Hiroki Ooi , Jens Rasmussen , Kentaro Nakamura , Naoki Kuwata , Yoshinori Nishizawa , Tomoo Takahara , Masahiro Yuki
发明人： Yuichi Akiyama , Takeshi Hoshida , Akira Miura , Yutaka Kai , Hiroki Ooi , Jens Rasmussen , Kentaro Nakamura , Naoki Kuwata , Yoshinori Nishizawa , Tomoo Takahara , Masahiro Yuki
IPC分类号： H04B10/04
CPC分类号： G02F1/2255 , G02F1/0123 , H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/50575 , H04B10/50577 , H04B10/50595 , H04B10/5162 , H04B10/5165 , H04B10/5561 , H04B10/66 , H04B10/677
摘要： A phase shift unit provides a prescribed phase difference (π/2, for example) between a pair of optical signals transmitted via a pair of arms constituting a data modulation unit. A low-frequency signal f0 is superimposed on one of the optical signals. A signal of which phase is shifted by π/2 from the low-frequency signal f0 is superimposed on the other optical signal. A pair of the optical signals is coupled, and a part of which is converted into an electrical signal by a photodiode. 2f0 component contained in the electrical signal is extracted. Bias voltage provided to the phase shift unit is controlled by feedback control so that the 2f0 component becomes the minimum.
摘要翻译： 相移单元在经由构成数据调制单元的一对臂发送的一对光信号之间提供规定的相位差（＆pgr / / 2）。 低频信号f0叠加在一个光信号上。 将相位从低频信号f0移位了＆pgr / / 2的信号叠加在另一个光信号上。 一对光信号被耦合，其一部分由光电二极管转换成电信号。 提取包含在电信号中的2f0分量。 通过反馈控制来控制提供给相移单元的偏压，使得2f0分量成为最小值。
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公开(公告)号：US08331779B2
公开(公告)日：2012-12-11
申请号：US12659270
申请日：2010-03-02
申请人： Hiroki Ooi , Akira Miura , Tsuyoshi Yamamoto , Naoki Hashimoto
发明人： Hiroki Ooi , Akira Miura , Tsuyoshi Yamamoto , Naoki Hashimoto
IPC分类号： H04J14/00
CPC分类号： G02B6/29313 , G02B6/2931 , G02B6/29383 , G02B6/3512 , G02B6/356 , G02B26/0833 , H04J14/0204 , H04J14/0208 , H04J14/0212 , H04J14/0213
摘要： An OADM in a wavelength division multiplexing transmission system includes a wavelength selection switch that selects a predetermined wavelength from a multiple optical signal obtained by multiplexing a phase modulated signal and an intensity modulated signal and outputs the selected wavelength signal to a predetermined output port. The wavelength selection switch has a different delay for each wavelength of the multiple optical signal. For example, the wavelength selection switch includes a mirror array. Optical paths from the surfaces of mirrors arranged on the mirror array to the diffraction grating are different in the case of adjacent mirrors.
摘要翻译： 波分复用传输系统中的OADM包括波长选择开关，其从通过复用相位调制信号和强度调制信号获得的多个光信号中选择预定波长，并将所选择的波长信号输出到预定输出端口。 波长选择开关对于多个光信号的每个波长具有不同的延迟。 例如，波长选择开关包括反射镜阵列。 在相邻反射镜的情况下，从反射镜阵列上布置在反射镜阵列上的反射镜的表面的光路不同。
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公开(公告)号：US08295703B2
公开(公告)日：2012-10-23
申请号：US12585084
申请日：2009-09-02
申请人： Akira Miura , Hiroki Ooi , Takafumi Terahara
发明人： Akira Miura , Hiroki Ooi , Takafumi Terahara
IPC分类号： H04J14/02
CPC分类号： H04Q11/0005 , H04B10/25133 , H04J14/0205 , H04J14/0208 , H04J14/0209 , H04J14/0212 , H04J14/0213 , H04J14/0217 , H04Q2011/0039 , H04Q2011/0049
摘要： Where add optical signals have k different bit rates, an add controller is connected to k (
摘要翻译： 在添加光信号具有k个不同比特率的情况下，添加控制器连接到N个输入端口的k（
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