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1. 发明授权

US08483573B2 Optical transmission and reception system, and optical receiver 失效
标题翻译：光接收系统和光接收机
公开(公告)号：US08483573B2
公开(公告)日：2013-07-09
申请号：US12987636
申请日：2011-01-10
申请人： Hideaki Kotake , Nobuhiko Kikuchi , Kohei Mandai
发明人： Hideaki Kotake , Nobuhiko Kikuchi , Kohei Mandai
IPC分类号： H04B10/00 , H04B10/06
CPC分类号： H04J14/06 , H04B10/2572 , H04B10/532 , H04B10/60 , H04B10/611 , H04B10/6161 , H04B10/6162
摘要： An optical signal of an optical transmission part is brought into a high-speed polarization scrambling state by a polarization scrambling part, and transmitted to en optical fiber transmission line as the optical signal from the optical transmitter. The optical signal passing through the optical fiber transmission line is inputted to an optical receiver. The optical signal inputted to the optical receiver is converted into an electric signal by a polarization dependent photoelectric detection part. The converted electric signal is inputted to a digital signal processing part having a polarization scrambling cancel part of canceling the polarization scrambling state by a digital signal processing operation. At the digital signal processing part, the polarization scrambling state of the electric signal is canceled, and a data signal is outputted.
摘要翻译：光传输部分的光信号由偏振加扰部分进入高速偏振加扰状态，并作为来自光发送器的光信号传输到光纤传输线。通过光纤传输线的光信号被输入到光接收机。输入到光接收机的光信号由偏振相关的光电检测部分转换为电信号。转换的电信号被输入到具有通过数字信号处理操作来消除偏振加扰状态的偏振加扰取消部分的数字信号处理部分。在数字信号处理部分，消除电信号的偏振加扰状态，并输出数据信号。

2. 发明申请

US20110182589A1 Optical Transmission and Reception System, and Optical Receiver 失效
标题翻译：光传输和接收系统以及光接收机
公开(公告)号：US20110182589A1
公开(公告)日：2011-07-28
申请号：US12987636
申请日：2011-01-10
申请人： Hideaki KOTAKE , Nobuhiko Kikuchi , Kohei Mandai
发明人： Hideaki KOTAKE , Nobuhiko Kikuchi , Kohei Mandai
IPC分类号： H04B10/00
CPC分类号： H04J14/06 , H04B10/2572 , H04B10/532 , H04B10/60 , H04B10/611 , H04B10/6161 , H04B10/6162
摘要： An optical signal of an optical transmission part is brought into a high-speed polarization scrambling state by a polarization scrambling part, and transmitted to en optical fiber transmission line as the optical signal from the optical transmitter. The optical signal passing through the optical fiber transmission line is inputted to an optical receiver. The optical signal inputted to the optical receiver is converted into an electric signal by a polarization dependent photoelectric detection part. The converted electric signal is inputted to a digital signal processing part having a polarization scrambling cancel part of canceling the polarization scrambling state by a digital signal processing operation. At the digital signal processing part, the polarization scrambling state of the electric signal is canceled, and a data signal is outputted.
摘要翻译：光传输部分的光信号由偏振加扰部分进入高速偏振加扰状态，并作为来自光发送器的光信号传输到光纤传输线。通过光纤传输线的光信号被输入到光接收机。输入到光接收机的光信号由偏振相关的光电检测部分转换为电信号。转换的电信号被输入到具有通过数字信号处理操作来消除偏振加扰状态的偏振加扰取消部分的数字信号处理部分。在数字信号处理部分，消除电信号的偏振加扰状态，并输出数据信号。

3. 发明授权

US08340533B2 Optical balanced receiver and IQ receiver with balanced compensation 失效
标题翻译：光学平衡接收器和IQ接收器具有均衡补偿
公开(公告)号：US08340533B2
公开(公告)日：2012-12-25
申请号：US12485574
申请日：2009-06-16
申请人： Kohei Mandai , Nobuhiko Kikuchi
发明人： Kohei Mandai , Nobuhiko Kikuchi
IPC分类号： H04B10/06
CPC分类号： H04B10/677 , H04B10/60
摘要： An optical balanced receiver including an optical coupler for combining input optical information signal and optical reference signal and outputting two optical interfering signals whose phases are opposite to each other, two photodetectors for receiving the two optical interfering signals and outputting detection signals as electrical signals having the amplitudes corresponding to the interference intensities of the received optical interfering signals, a balance compensation type difference device for compensating an intensity fluctuation component added to a difference signal of the two detection signals due to the difference in amplitude and/or delay between the detection signals output from the two photodetectors in accordance with an input control signal, and outputting the compensated difference signal of the two detection signals, and a control circuit for outputting the control signal to the balance compensation type difference device.
摘要翻译：一种光学平衡接收机，包括用于组合输入光信息信号和光参考信号的光耦合器，并输出相位彼此相反的两个光干涉信号，两个光电检测器，用于接收两个光干涉信号，并将检测信号作为电信号输出，对应于接收到的光干涉信号的干涉强度的幅度，用于补偿由于检测信号输出之间的幅度差和/或延迟引起的两个检测信号的差分信号相加的强度波动分量的平衡补偿型差分装置根据输入控制信号从两个光电检测器输出并输出两个检测信号的补偿差分信号，以及用于将控制信号输出到平衡补偿型差分装置的控制电路。

4. 发明授权

US08417126B2 Polarization multiplexing transmitter and transmission system 失效
标题翻译：极化复用发射机和传输系统
公开(公告)号：US08417126B2
公开(公告)日：2013-04-09
申请号：US12985455
申请日：2011-01-06
申请人： Kohei Mandai , Nobuhiko Kikuchi , Shinya Sasaki
发明人： Kohei Mandai , Nobuhiko Kikuchi , Shinya Sasaki
IPC分类号： H04B10/04
CPC分类号： H04J14/06
摘要： A polarization multiplexing transmitter which generates polarization-multiplexed signals which are arbitrarily polarization-scrambled at high speed, without adding a polarization modulator and a polarization scrambler. In the transmitter, an orthogonally polarized signal generator includes two optical modulators which modulate the electric fields of optical signals and generate two optical signals with mutually orthogonal polarized waves. The transmitter includes electric field mappers which convert two data strings into electric field signals, polarization mappers which give different polarized waves to the two signals, polarization rotators which rotate the polarized waves of the signals uniformly, a polarization multiplexer which multiplexes the two polarization-rotated signals, a polarization demultiplexer which demultiplexes the multiplexed signal into polarized wave components of optical signals generated by the orthogonally polarized signal generator, and a driver. The optical modulators are driven to make the two demultiplexed electric field signals consistent with the electric fields of optical signals modulated by the modulators.
摘要翻译：一种偏振复用发送器，其生成以高速任意偏振加扰的偏振复用信号，而不添加偏振调制器和偏振加扰器。在发射机中，正交极化信号发生器包括调制光信号的电场并产生具有相互正交的极化波的两个光信号的两个光调制器。发射机包括将两个数据串转换为电场信号的电场映射器，向两个信号提供不同极化波的偏振映射器，使信号的偏振波均匀旋转的偏振旋转器，多路复用两个偏振旋转信号，将多路复用信号解复用为由正交偏振信号发生器产生的光信号的偏振波分量的偏振解复用器和驱动器。驱动光调制器以使两个解复用的电场信号与由调制器调制的光信号的电场一致。

5. 发明申请

US20090317075A1 Optical Balanced Receiver and IQ Receiver with Balanced Compensation 失效
标题翻译：光平衡接收器和平衡补偿IQ接收器
公开(公告)号：US20090317075A1
公开(公告)日：2009-12-24
申请号：US12485574
申请日：2009-06-16
申请人： Kohei MANDAI , Nobuhiko Kikuchi
发明人： Kohei MANDAI , Nobuhiko Kikuchi
IPC分类号： H04B10/08 , H04B10/06
CPC分类号： H04B10/677 , H04B10/60
摘要： An optical balanced receiver including an optical coupler for combining input optical information signal and optical reference signal and outputting two optical interfering signals whose phases are opposite to each other, two photodetectors for receiving the two optical interfering signals and outputting detection signals as electrical signals having the amplitudes corresponding to the interference intensities of the received optical interfering signals, a balance compensation type difference device for compensating an intensity fluctuation component added to a difference signal of the two detection signals due to the difference in amplitude and/or delay between the detection signals output from the two photodetectors in accordance with an input control signal, and outputting the compensated difference signal of the two detection signals, and a control circuit for outputting the control signal to the balance compensation type difference device.
摘要翻译：一种光学平衡接收机，包括用于组合输入光信息信号和光参考信号的光耦合器，并输出相位彼此相反的两个光干涉信号，两个光电检测器，用于接收两个光干涉信号，并将检测信号作为电信号输出，对应于接收到的光干涉信号的干涉强度的幅度，用于补偿由于检测信号输出之间的幅度差和/或延迟引起的两个检测信号的差分信号相加的强度波动分量的平衡补偿型差分装置根据输入控制信号从两个光电检测器输出并输出两个检测信号的补偿差分信号，以及用于将控制信号输出到平衡补偿型差分装置的控制电路。

6. 发明授权

US08503887B2 Pre-equalized optical transmitter and pre-equalized optical transmission system 失效
标题翻译：预均衡光发射机和预均衡光传输系统
公开(公告)号：US08503887B2
公开(公告)日：2013-08-06
申请号：US12394225
申请日：2009-02-27
申请人： Nobuhiko Kikuchi
发明人： Nobuhiko Kikuchi
IPC分类号： H04B10/04
CPC分类号： H04B10/25137 , H04B10/5055 , H04B2210/254
摘要： A pre-equalized optical transmitter includes, a laser source; a duo-binary pre-coder circuit; a pre-equalization circuit for applying an inverse function of chromatic dispersion; at least two D/A converters; and an optical field modulator comprising at least two input terminals for an electric signal. The pre-equalized optical transmitter: converts, by the duo-binary pre-coder circuit, a digital information signal of a predetermined symbol time to be transmitted into a digital complex signal including one sampling point per symbol; equalizes, by the pre-equalization circuit, degradation in transmission of the digital complex signal; converts, by the D/A converters, the equalized digital complex signal into an analog signal; suppresses an analog signal leaking outside a Nyquist bandwidth by at least 23 dB; modulates, by the optical field modulator, light output from the laser source with the analog signal to generate a modulated optical field signal; and transmits the modulated optical field signal.
摘要翻译：预均衡光发射机包括：激光源; 二进制预编码电路; 用于施加色散的反函数的预均衡电路; 至少两个D / A转换器; 以及包括用于电信号的至少两个输入端的光场调制器。预均衡光发射机：通过二进制二进制编码器电路将预定符号时间的数字信息信号转换成包括每符号一个采样点的数字复信号; 通过预均衡电路均衡数字复合信号的传输劣化; 通过D / A转换器将均衡的数字复合信号转换为模拟信号; 抑制奈奎斯特带宽外的模拟信号至少23 dB; 通过光场调制器调制来自激光源的光与模拟信号的输出，以产生调制的光场信号; 并发送调制的光场信号。

7. 发明申请

US20110305457A1 Optical Multi-Level Transmission System 失效
标题翻译：光学多层传输系统
公开(公告)号：US20110305457A1
公开(公告)日：2011-12-15
申请号：US13201278
申请日：2009-03-02
申请人： Nobuhiko Kikuchi
发明人： Nobuhiko Kikuchi
IPC分类号： H04B10/00 , H04J14/02 , H04J14/06 , H04B10/12
CPC分类号： H04B10/5055 , H04B10/541 , H04B10/676 , H04B10/695 , H04L25/061 , H04L27/3845
摘要： Provided is an optical multilevel transmission system, comprising at least one optical multilevel transmitter for transmitting an optical multilevel signal obtained and an optical multilevel receiver for receiving the optical multilevel signal. The received optical multilevel signal has a larger noise in an angular direction than in a radial direction. The optical multilevel receiver sets, in a symbol decision of the received optical multilevel signal demodulated on the complex plane, for positions of all or some of ideal signal points, a width in the angular direction of a decision area, to which each of the ideal signal points belongs and which is measured along a circumference of a circle centered at an origin and passing through a center of the each of the ideal signal points, larger than a width in the angular direction of a decision area defined based on a Euclidean distance.
摘要翻译：提供了一种光学多电平传输系统，包括至少一个光学多电平发射机，用于发射所获得的光学多电平信号和用于接收光学多电平信号的光学多电平接收机。所接收的光学多电平信号在角度方向上具有比径向方向更大的噪声。光复用多电平接收机在复平面解调的接收光多电平信号的符号判定中，针对理想信号点的全部或一部分的位置，确定每个理想信号点的角度方向上的宽度信号点属于并沿着以原点为中心并穿过每个理想信号点的中心的圆的圆周测量，大于基于欧几里得距离定义的判定区域的角度方向上的宽度。

8. 发明授权

US07650075B2 Optical add-drop multiplexer, and optical network equipment using the same 失效
标题翻译：光分插复用器，光网络设备使用相同
公开(公告)号：US07650075B2
公开(公告)日：2010-01-19
申请号：US11200036
申请日：2005-08-10
申请人： Nobuhiko Kikuchi
发明人： Nobuhiko Kikuchi
IPC分类号： H04B10/08 , H04J14/02
CPC分类号： H04J14/0295 , H04J14/0206 , H04J14/0212 , H04J14/0227 , H04J14/0246 , H04J14/025 , H04J14/0283 , H04J14/0284 , H04J14/0286 , H04J14/0294
摘要： Heretofore, it was necessary to individually locate an optical switch, an optical switch control circuit, and the like, before and after an optical transceiver that performs optical protection. As a result, costs and the space for implementation increase, and a delay in services is also caused, which were the problems.For the purpose of solving the above problems, the present invention provides a simple optical protection method used in an optical add-drop multiplexer.Add switches 105-1 through 105-N and drop switches 103-1 through 103-N for optical signals corresponding to each wavelength in an optical add-drop multiplexer 100 are made controllable independently of one another. Add switches and drop switches of the active-side and backup-side optical add-drop multiplexers are switched by optical switch control circuits 106-1 through 106-N respectively to make a detour around a failure so that the optical protection is achieved.
摘要翻译：迄今为止，在执行光学保护的光收发器之前和之后，需要单独定位光开关，光开关控制电路等。因此，成本和实施空间有所增加，服务延迟也是一个问题。为了解决上述问题，本发明提供了一种在光分插复用器中使用的简单光保护方法。在光分插多路复用器100中添加开关105-1至105-N和用于与每个波长对应的光信号的分接开关103-1至103-N彼此独立地控制。分别通过光开关控制电路106-1至106-N切换主动侧和备用侧光分插复用器的开关和分接开关，绕绕故障绕行，从而实现光保护。

9. 发明授权

US06850713B2 Optical single sideband transmitter 失效
标题翻译：光学单边带发射机
公开(公告)号：US06850713B2
公开(公告)日：2005-02-01
申请号：US10320527
申请日：2002-12-17
申请人： Nobuhiko Kikuchi , Ryoji Takeyari , Toshiki Sugawara
发明人： Nobuhiko Kikuchi , Ryoji Takeyari , Toshiki Sugawara
IPC分类号： G02F1/025 , H04B10/516 , H04B10/54 , H04B10/61 , H01S3/10 , G02B26/00 , G02F1/00 , H04B10/12
CPC分类号： H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/50572 , H04B10/506 , H04B10/508 , H04B2210/258 , H04L7/0008
摘要： With the normal modulation method, it is difficult to construct a Hilbert transform device because it is complicated. To solve the problem, a single sideband modulated optical pulse train is generated by driving a Mach-Zehnder optical modulator for optical pulse generation with a laser source's sine wave clock signals that have been rendered 90 degrees out of phase from each other. The generated pulse train is applied to an optical modulator, modulated with an NRZ (nonreturn-to-zero) data signal, and filtered by a narrow-band optical filter to obtain one of two sidebands.
摘要翻译：利用正常的调制方法，由于复杂而难以构造希尔伯特变换装置。为了解决这个问题，通过用激光源的正弦波时钟信号驱动用于光脉冲生成的马赫 - 曾德尔光学调制器来产生单个边带调制的光脉冲串，这些信号彼此相差90度。所产生的脉冲串被施加到用NRZ（非归零）数据信号调制的光调制器，并由窄带滤光器滤波以获得两个边带之一。

10. 发明授权

US5995278A Optical transmission system 失效
标题翻译：光传输系统
公开(公告)号：US5995278A
公开(公告)日：1999-11-30
申请号：US113549
申请日：1998-07-10
申请人： Nobuhiko Kikuchi , Shinya Sasaki
发明人： Nobuhiko Kikuchi , Shinya Sasaki
IPC分类号： H04B10/2507 , H04B10/07 , H04B10/2525 , H04B10/255 , H04B10/2563 , H04B10/54 , H04B10/58 , H04J1/00 , H04B10/18
CPC分类号： H04B10/2519 , H04B10/25253 , H04B10/255
摘要： An optical transmission system in which influences of worsening of the waveform by SPM are canceled by setting an amount of compensation of a dispersion compensator at about 50% of a total amount of dispersion of an optical fiber transmission line so that received waveform is almost not varied, even if light intensity is varied. In the case where a plurality of dispersion compensators are used, the number of compensators is optimized by setting arrangement interval in the neighborhood of a receiving end at a small value. Further, in a transmission line, in which amounts of dispersion of optical fibers have positive and negative fluctuations, the smallest transmission distance of a transmission system is increased by effecting dispersion compensation so that an expected value of the total amount of dispersion of the transmission line is abnormal dispersion.
摘要翻译：通过将色散补偿器的补偿量设置在光纤传输线的总色散的约50％以使接收波形几乎不变的光传输系统，其中SPM波形恶化的影响被消除即使光强变化也是如此。在使用多个色散补偿器的情况下，通过将接收端附近的布置间隔设定为较小的值来优化补偿器的数量。此外，在其中光纤的色散量具有正和负波动的传输线中，通过进行色散补偿来增加传输系统的最小传输距离，使得传输线的总色散量的期望值是异常分散。

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