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1. 发明授权

US08886057B2 Optical receiver, signal processor, and optical receiving method 有权
标题翻译：光接收机，信号处理器和光接收方式
公开(公告)号：US08886057B2
公开(公告)日：2014-11-11
申请号：US13325681
申请日：2011-12-14
申请人： Kazuo Hironishi , Takeshi Hoshida
发明人： Kazuo Hironishi , Takeshi Hoshida
IPC分类号： H04B10/06 , H04B10/61
CPC分类号： H04B10/6161 , H04B10/6165
摘要： An optical receiver includes a splitter that splits a local oscillator lightwave into a first local oscillator lightwave and a second local oscillator lightwave; a measurement unit that measures phase variation of the first local oscillator lightwave; a receiving unit that receives a signal lightwave and the second local oscillator lightwave and mixes these lightwaves and converts the mixed lightwaves into digital signal; a dispersion compensator that reduces chromatic dispersion of the digital signal; a phase processing unit that rotates phase of the dispersion-reduced signal based on the phase variation; and a discriminating unit that discriminates the phase-rotated signal.
摘要翻译：光接收机包括分离器，其将本地振荡器光波分裂成第一本地振荡器光波和第二本地振荡器光波; 测量单元，其测量第一本地振荡器光波的相位变化; 接收单元，接收信号光波和第二本地振荡器光波，并混合这些光波并将混合光波转换成数字信号; 一种降低数字信号色散的色散补偿器; 相位处理单元，其基于所述相位变化来旋转所述色散减小信号的相位; 以及鉴别单元，其识别相位旋转信号。

2. 发明申请

US20120213532A1 OPTICAL RECEIVER, SIGNAL PROCESSOR, AND OPTICAL RECEIVING METHOD 有权
标题翻译：光接收机，信号处理器和光接收方法
公开(公告)号：US20120213532A1
公开(公告)日：2012-08-23
申请号：US13325681
申请日：2011-12-14
申请人： Kazuo Hironishi , Takeshi Hoshida
发明人： Kazuo Hironishi , Takeshi Hoshida
IPC分类号： H04B10/06
CPC分类号： H04B10/6161 , H04B10/6165
摘要： An optical receiver includes a splitter that splits a local oscillator lightwave into a first local oscillator lightwave and a second local oscillator lightwave; a measurement unit that measures phase variation of the first local oscillator lightwave; a receiving unit that receives a signal lightwave and the second local oscillator lightwave and mixes these lightwaves and converts the mixed lightwaves into digital signal; a dispersion compensator that reduces chromatic dispersion of the digital signal; a phase processing unit that rotates phase of the dispersion-reduced signal based on the phase variation; and a discriminating unit that discriminates the phase-rotated signal.
摘要翻译：光接收机包括分离器，其将本地振荡器光波分裂成第一本地振荡器光波和第二本地振荡器光波; 测量单元，其测量第一本地振荡器光波的相位变化; 接收单元，接收信号光波和第二本地振荡器光波，并混合这些光波并将混合光波转换成数字信号; 一种降低数字信号色散的色散补偿器; 相位处理单元，其基于所述相位变化来旋转所述色散减小信号的相位; 以及鉴别单元，其识别相位旋转信号。

3. 发明授权

US07706695B2 Optical DQPSK receiver apparatus 失效
标题翻译：光DQPSK接收机
公开(公告)号：US07706695B2
公开(公告)日：2010-04-27
申请号：US11476028
申请日：2006-06-28
申请人： Kazuo Hironishi , Takeshi Hoshida
发明人： Kazuo Hironishi , Takeshi Hoshida
IPC分类号： H04B10/04 , H04B10/06
CPC分类号： H04B10/66
摘要： An interferometer comprises a delay element and a phase shift element. The delay element delays an optical DQPSK signal by one-symbol time. The phase shift element shifts the optical DQPSK signal by π/8. A pair of photodiodes converts each of a pair of optical signals output from the interferometer into an electric signal. A photodetector circuit converts differential current obtained by a pair of the photodiodes into voltage and outputs as a detection signal. A first decision circuit outputs one-bit information based on the voltage of the detection signal. A second decision circuit outputs one-bit information based on a squared value of the voltage of the detection signal.
摘要翻译：干涉仪包括延迟元件和相移元件。延迟元件将光DQPSK信号延迟一个符号时间。相移元件将光DQPSK信号移位＆pgr / / 8。一对光电二极管将从干涉仪输出的一对光信号中的每一个转换为电信号。光检测器电路将由一对光电二极管获得的差分电流转换为电压和输出作为检测信号。第一判定电路基于检测信号的电压输出一位信息。第二判定电路基于检测信号的电压的平方值输出一位信息。

4. 发明申请

US20100040383A1 Differential multilevel modulated optical signal receiver apparatus 失效
标题翻译：差分多电平调制光信号接收装置
公开(公告)号：US20100040383A1
公开(公告)日：2010-02-18
申请号：US12565812
申请日：2009-09-24
申请人： Kazuo Hironishi , Takeshi Hoshida
发明人： Kazuo Hironishi , Takeshi Hoshida
IPC分类号： H04B10/06
CPC分类号： H04L27/223 , H04B10/66 , H04B10/677
摘要： A first optical splitter splits an input optical signal and outputs it to first and second optical paths. A second optical splitter outputs the optical signal from the first optical path to third and fourth optical paths. A third optical splitter outputs the optical signal from the second optical path to fifth and sixth optical paths. In the second optical path, 1-symbol delay element and π/4 phase shifter element are configured. In the fourth optical path, π/2 phase shifter element is configured. First and second adjuster circuits adjust the optical path length of the second and the fourth optical paths, respectively, by temperature control. A first optical coupler couples optical signals transmitted via the third and the fifth optical paths. A second optical coupler couples optical signals transmitted via the fourth and the sixth optical paths. Photodetectors convert the optical signals from the optical couplers into electrical signals.
摘要翻译：第一光分路器分离输入光信号并将其输出到第一和第二光路。第二光分路器将光信号从第一光路输出到第三和第四光路。第三光分路器将光信号从第二光路输出到第五和第六光路。在第二光路中配置1符号延迟元件和＆pgr / 4移相器元件。在第四光路中配置＆pgr / 2移相器元件。第一和第二调节器电路通过温度控制分别调节第二和第四光路的光路长度。第一光耦合器耦合经由第三和第五光路传输的光信号。第二光耦合器耦合经由第四和第六光路传输的光信号。光电检测器将光耦合器的光信号转换为电信号。

5. 发明授权

US07751721B2 Optical DQPSK receiver apparatus 有权
标题翻译：光DQPSK接收机
公开(公告)号：US07751721B2
公开(公告)日：2010-07-06
申请号：US11392754
申请日：2006-03-30
申请人： Takeshi Hoshida , Kazuo Hironishi
发明人： Takeshi Hoshida , Kazuo Hironishi
IPC分类号： H04B10/00
CPC分类号： H04B10/66
摘要： A first interferometer comprises a first delay element and a first phase shift element, and a second interferometer comprises a second delay element and a second phase shift element. The amounts of phase shift in the first and second phase shift element are zero and π/2, respectively. A first photo detector comprises first and second photodiodes connected in parallel, and a second photo detector comprises third and fourth photodiodes connected in series. The first photodiode is provided with a first optical output of the first interferometer, the second photodiode is provided with a first optical output of the second interferometer, the third photodiode is provided with a second optical output of the first interferometer, and the fourth photodiode is provided with a second optical output of the second interferometer. A signal process circuit recovers transmitted data based on output signals of the first and second photo detectors.
摘要翻译：第一干涉仪包括第一延迟元件和第一相移元件，第二干涉仪包括第二延迟元件和第二相移元件。第一和第二相移元件中的相移量分别为零和＆lt; pgr / 2。第一光电检测器包括并联连接的第一和第二光电二极管，第二光电检测器包括串联连接的第三和第四光电二极管。第一光电二极管设置有第一干涉仪的第一光输出，第二光电二极管设置有第二干涉仪的第一光输出，第三光电二极管设置有第一干涉仪的第二光输出，第四光电二极管为设置有第二干涉仪的第二光输出。信号处理电路基于第一和第二光电检测器的输出信号来恢复发送的数据。

6. 发明申请

US20070230625A1 Optical DQPSK receiver apparatus 失效
标题翻译：光DQPSK接收机
公开(公告)号：US20070230625A1
公开(公告)日：2007-10-04
申请号：US11476028
申请日：2006-06-28
申请人： Kazuo Hironishi , Takeshi Hoshida
发明人： Kazuo Hironishi , Takeshi Hoshida
IPC分类号： H04L27/22
CPC分类号： H04B10/66
摘要： An interferometer comprises a delay element and a phase shift element. The delay element delays an optical DQPSK signal by one-symbol time. The phase shift element shifts the optical DQPSK signal by π/8. A pair of photodiodes converts each of a pair of optical signals output from the interferometer into an electric signal. A photodetector circuit converts differential current obtained by a pair of the photodiodes into voltage and outputs as a detection signal. A first decision circuit outputs one-bit information based on the voltage of the detection signal. A second decision circuit outputs one-bit information based on a squared value of the voltage of the detection signal.
摘要翻译：干涉仪包括延迟元件和相移元件。延迟元件将光DQPSK信号延迟一个符号时间。相移元件将光DQPSK信号移位pi / 8。一对光电二极管将从干涉仪输出的一对光信号中的每一个转换为电信号。光检测器电路将由一对光电二极管获得的差分电流转换为电压和输出作为检测信号。第一判定电路基于检测信号的电压输出一位信息。第二判定电路基于检测信号的电压的平方值输出一位信息。

7. 发明授权

US08965221B2 Receiver and cross phase modulation reduction method 有权
标题翻译：接收机和交叉相位调制降低方法
公开(公告)号：US08965221B2
公开(公告)日：2015-02-24
申请号：US13484892
申请日：2012-05-31
申请人： Kazuo Hironishi , Takeshi Hoshida
发明人： Kazuo Hironishi , Takeshi Hoshida
IPC分类号： H04B10/06 , H04B10/61
CPC分类号： H04B10/611 , H04B10/614 , H04B10/6165
摘要： A receiver includes: an extraction circuit to extract a phase fluctuation component common to phase data of two polarization components that are separated in a coherent reception of a polarization multiplexing phase modulation optical signal; and a correction circuit to correct the phase data of the two polarization components in accordance with the phase fluctuation component.
摘要翻译：接收机包括：提取电路，用于提取在偏振复用相位调制光信号的相干接收中分离的两个偏振分量的相位数据共同的相位波动分量; 以及校正电路，用于根据相位波动分量校正两个偏振分量的相位数据。

8. 发明申请

US20120308233A1 RECEIVER AND CROSS PHASE MODULATION REDUCTION METHOD 有权
标题翻译：接收器和相位调制减少方法
公开(公告)号：US20120308233A1
公开(公告)日：2012-12-06
申请号：US13484892
申请日：2012-05-31
申请人： Kazuo Hironishi , Takeshi Hoshida
发明人： Kazuo Hironishi , Takeshi Hoshida
IPC分类号： H04J14/06 , H04B10/06
CPC分类号： H04B10/611 , H04B10/614 , H04B10/6165
摘要： A receiver includes: an extraction circuit to extract a phase fluctuation component common to phase data of two polarization components that are separated in a coherent reception of a polarization multiplexing phase modulation optical signal; and a correction circuit to correct the phase data of the two polarization components in accordance with the phase fluctuation component.
摘要翻译：接收机包括：提取电路，用于提取在偏振复用相位调制光信号的相干接收中分离的两个偏振分量的相位数据共同的相位波动分量; 以及校正电路，用于根据相位波动分量校正两个偏振分量的相位数据。

9. 发明授权

US07631378B2 Optical waveform shaper 有权
标题翻译：光波形整形器
公开(公告)号：US07631378B2
公开(公告)日：2009-12-15
申请号：US11094642
申请日：2005-03-31
申请人： Kazuo Hironishi , Takeshi Hoshida , Hiroshi Onaka
发明人： Kazuo Hironishi , Takeshi Hoshida , Hiroshi Onaka
IPC分类号： G01B9/02
CPC分类号： H04B10/299 , G02F1/3501 , G02F1/3517 , G02F1/3519 , G02F2001/212 , G02F2201/16 , G02F2203/26
摘要： The present invention is an optical waveform shaper that utilizes a plurality of interferometers. Each interferometer has one of two types of transfer functions. One type is a first transfer function characterized as having a positive second order derivative of the output optical power in respect to the input optical power. Another type is a second transfer function characterized as having a negative second order derivative of the output optical power in respect to the input optical power. The characteristics of both the first transfer function and the second transfer function are actualized when the input optical power is in the neighborhood of zero and the output optical power shows substantially periodic change with respect to the input optical power. At least one of the plurality of interferometers uses the second transfer function.
摘要翻译：本发明是利用多个干涉仪的光学波形整形器。每个干涉仪都有两种传递函数之一。一种类型是第一传递函数，其特征在于相对于输入光功率具有输出光功率的正二阶导数。另一种类型是第二传递函数，其特征在于相对于输入光功率具有输出光功率的负二阶导数。当输入光功率在零附近时，实现第一传递函数和第二传递函数的特性，并且输出光功率相对于输入光功率显示出周期性的周期性变化。多个干涉仪中的至少一个使用第二传递函数。

10. 发明授权

US07613403B2 Differential multilevel modulated optical signal receiver apparatus 失效
标题翻译：差分多电平调制光信号接收装置
公开(公告)号：US07613403B2
公开(公告)日：2009-11-03
申请号：US11289508
申请日：2005-11-30
申请人： Kazuo Hironishi , Takeshi Hoshida
发明人： Kazuo Hironishi , Takeshi Hoshida
IPC分类号： H04B10/06
CPC分类号： H04L27/223 , H04B10/66 , H04B10/677
摘要： A first optical splitter splits an input optical signal and outputs it to first and second optical paths. A second optical splitter outputs the optical signal from the first optical path to third and fourth optical paths. A third optical splitter outputs the optical signal from the second optical path to fifth and sixth optical paths. In the second optical path, 1-symbol delay element and π/4 phase shifter element are configured. In the fourth optical path, π/2 phase shifter element is configured. First and second adjuster circuits adjust the optical path length of the second and the fourth optical paths, respectively, by temperature control. A first optical coupler couples optical signals transmitted via the third and the fifth optical paths. A second optical coupler couples optical signals transmitted via the fourth and the sixth optical paths. Photodetectors convert the optical signals from the optical couplers into electrical signals.
摘要翻译：第一光分路器分离输入光信号并将其输出到第一和第二光路。第二光分路器将光信号从第一光路输出到第三和第四光路。第三光分路器将光信号从第二光路输出到第五和第六光路。在第二光路中，配置1符号延迟元件和pi / 4移相器元件。在第四光路中，配置了pi / 2移相器元件。第一和第二调节器电路通过温度控制分别调节第二和第四光路的光路长度。第一光耦合器耦合经由第三和第五光路传输的光信号。第二光耦合器耦合经由第四和第六光路传输的光信号。光电检测器将光耦合器的光信号转换为电信号。

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