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1. 发明授权

US08768173B2 Optical receiver and optical transmission system 有权
标题翻译：光接收机和光传输系统
公开(公告)号：US08768173B2
公开(公告)日：2014-07-01
申请号：US13324639
申请日：2011-12-13
申请人： Takahito Tanimura , Takeshi Hoshida
发明人： Takahito Tanimura , Takeshi Hoshida
IPC分类号： H04B10/06 , H04B10/00 , H04L27/00
CPC分类号： H04B10/61
摘要： An optical receiver includes: a first generator to generate, from an optical signal to which a reference signal is inserted, a first digital signal representing a signal component of a first partial band including the reference signal, using a first local oscillation light of a first frequency; a second generator to generate, from the optical signal, a second digital signal representing a signal component of a second partial band including the reference signal, using a second local oscillation light of a second frequency being different from the first frequency; a frequency compensator to adjust a frequency of the signal component of the first partial band and a frequency of the signal component of the second partial band according to a frequency of the reference signal; and a combiner to combine the first and second partial bands adjusted by the frequency compensator.
摘要翻译：一种光接收机，包括：第一发生器，用于从第一数字信号中产生参考信号，第一数字信号表示包含参考信号的第一部分频带的信号分量，使用第一本地振荡光频率; 第二发生器，使用与所述第一频率不同的第二频率的第二本地振荡光，从所述光信号产生表示包括所述参考信号的第二部分频带的信号分量的第二数字信号; 频率补偿器，用于根据参考信号的频率调整第一部分频带的信号分量的频率和第二部分频带的信号分量的频率; 以及组合器，以组合由频率补偿器调整的第一和第二部分频带。

2. 发明授权

US08447190B2 Distortion compensating apparatus, optical receiving apparatus, and optical transmitting and receiving system 有权
标题翻译：失真补偿装置，光接收装置和光发送和接收系统
公开(公告)号：US08447190B2
公开(公告)日：2013-05-21
申请号：US12697202
申请日：2010-01-29
申请人： Takahito Tanimura , Takeshi Hoshida , Hisao Nakashima , Kazunari Shiota , Kiichi Sugitani
发明人： Takahito Tanimura , Takeshi Hoshida , Hisao Nakashima , Kazunari Shiota , Kiichi Sugitani
IPC分类号： H04B10/06 , H04B10/08 , H04B10/12 , H04B10/00 , H04J14/02
CPC分类号： H04B10/6971 , H04B10/25133 , H04B10/616 , H04B10/6161 , H04B2210/252
摘要： A distortion compensating apparatus which compensates for distortion in a waveform of a received light signal through a digital signal processing includes a plurality of fixed amount compensators which compensate for the distortion in the waveform at respective given compensating amounts. The combination of operating states of the plurality of fixed amount compensators is changed by on/off switching of each of the plurality of fixed amount compensators, and the plurality of fixed amount compensators are cascaded.
摘要翻译：通过数字信号处理补偿接收的光信号的波形中的失真的失真补偿装置包括多个固定量补偿器，其补偿各个给定补偿量处的波形失真。通过多个固定量补偿器中的每一个的开/关切换来改变多个固定量补偿器的操作状态的组合，并且多个固定量补偿器被级联。

3. 发明申请

US20120243880A1 MULTI-WAVELENGTH LIGHT SOURCE 有权
标题翻译：多波长光源
公开(公告)号：US20120243880A1
公开(公告)日：2012-09-27
申请号：US13413874
申请日：2012-03-07
申请人： Shoichiro ODA , Takeshi Hoshida , Toshiki Tanaka , Takahito Tanimura , Tomoo Takahara
发明人： Shoichiro ODA , Takeshi Hoshida , Toshiki Tanaka , Takahito Tanimura , Tomoo Takahara
IPC分类号： H04B10/04 , F21V9/00
CPC分类号： H04B10/506 , H01S5/005 , H01S5/0085 , H01S5/4087 , H04B10/548
摘要： Light output from a seed light source generation unit that outputs continuous light having a single frequency or a plurality of frequencies is input by a multi-wavelength light source to an optical circulation unit, and light having a plurality of frequencies that is frequency-synchronized with seed light output from the seed light source generation unit is generated. The optical circulation unit is provided with an optical frequency shifter to shift light frequencies, and includes a circulation circuit to return output from the optical frequency shifter to the input side. On a circulation path, an optical spectral shaper capable of adjusting an optical amount of attenuation for each frequency unit is provided so that optical amount of attenuations are adjusted, and thereby the number and the like of optical frequencies output from the optical circulation unit are changed.
摘要翻译：从多光波长光源输入输出具有单一频率或多个频率的连续光的种子光源生成部的光输出到光循环装置，具有频率同步的多个频率的光产生从种子光源生成单元输出的种子光。光学循环单元设置有用于移动光频率的光学移频器，并且包括循环电路，以将输出从光学移频器返回到输入侧。在循环路径上，设置能够调整每个频率单位的光衰减量的光谱整形器，从而调整光衰减量，从而使从光循环单元输出的光频数等变化。

4. 发明授权

US08249464B2 Optical receiver and method for optical reception 有权
标题翻译：光接收机和光接收方法
公开(公告)号：US08249464B2
公开(公告)日：2012-08-21
申请号：US12719258
申请日：2010-03-08
申请人： Shoichiro Oda , Takeshi Hoshida , Hisao Nakashima , Takahito Tanimura , Yuichi Akiyama
发明人： Shoichiro Oda , Takeshi Hoshida , Hisao Nakashima , Takahito Tanimura , Yuichi Akiyama
IPC分类号： H04B10/00 , H04B10/06 , H04J14/02
CPC分类号： H04B10/614 , H04B10/60 , H04B10/63
摘要： In-phase signal light and quadrature-phase signal light obtained by mixing input light and local light with each other are converted into digital signals. The quality of a signal to be received is monitored with reference to information obtained through digital signal processing, and the power ratio between the input signal light and the local light that are to be mixed with each other are controlled on the basis of the result of the monitoring.
摘要翻译：通过将输入光和局部光彼此混合而获得的同相信号光和正交相位信号光被转换为数字信号。参照通过数字信号处理获得的信息来监视要接收的信号的质量，并且基于将要混合的输入信号光和本地光之间的功率比来控制监控。

5. 发明申请

US20100054759A1 Method for Electric Power Supply of Optical Receiver, Digital Signal Processing Circuit, and Optical Receiver 有权
标题翻译：光接收机，数字信号处理电路和光接收机的供电方法
公开(公告)号：US20100054759A1
公开(公告)日：2010-03-04
申请号：US12458104
申请日：2009-06-30
申请人： Shoichiro Oda , Takeshi Hoshida , Hisao Nakashima , Takahito Tanimura
发明人： Shoichiro Oda , Takeshi Hoshida , Hisao Nakashima , Takahito Tanimura
IPC分类号： H04B10/06
CPC分类号： H04L25/03038 , H04B10/6971 , H04L2025/03566
摘要： In a digital signal processing circuit of an optical receiver applicable to this method for electric power supply control, tap coefficients of a filter used in a waveform equalization section are calculated in a tap coefficient calculating section, based on a state of an optical fiber transmission line. Then, among the calculated tap coefficients, a tap coefficient for which an absolute value is less than a previously determined threshold is determined, and electric power supply to a circuit part of a filter corresponding to the tap coefficient is stopped. As a result, for an optical receiver that performs digital signal processing, it is possible to reduce the power consumption, while realizing waveform equalization at a high accuracy.
摘要翻译：在适用于该电力供给控制方法的光接收机的数字信号处理电路中，根据光纤传输线的状态，在抽头系数计算部中计算波形均衡部中使用的滤波器的抽头系数。然后，在所计算的抽头系数中，确定绝对值小于先前确定的阈值的抽头系数，并且停止对与抽头系数相对应的滤波器的电路部分的电力供应。结果，对于执行数字信号处理的光接收机，可以在高精度地实现波形均衡的同时降低功耗。

6. 发明授权

US08649689B2 Digital coherent receiving apparatus 有权
标题翻译：数字相干接收装置
公开(公告)号：US08649689B2
公开(公告)日：2014-02-11
申请号：US12821061
申请日：2010-06-22
申请人： Nobukazu Koizumi , Takeshi Hoshida , Takahito Tanimura , Hisao Nakashima , Koji Nakamuta , Noriyasu Nakayama
发明人： Nobukazu Koizumi , Takeshi Hoshida , Takahito Tanimura , Hisao Nakashima , Koji Nakamuta , Noriyasu Nakayama
IPC分类号： H04B10/00
CPC分类号： H04B10/616 , H03J7/26 , H04B10/60 , H04B10/611 , H04B10/614 , H04B10/6165 , H04L7/0335 , H04L27/0014 , H04L27/223 , H04L27/2276 , H04L2027/0016 , H04L2027/0067
摘要： A digital coherent receiving apparatus includes a first oscillator for outputting a local light signal of a fixed frequency, a hybrid unit mixing the local light signal with a light signal received by a receiver, a second oscillator for outputting a sampling signal of a sampling frequency, a converter for converting the mixed light signal into digital signal synchronizing with the sampling signal, a waveform adjuster for adjusting a waveform distortion of the converted digital signal, a phase adjustor for adjusting a phase of the digital signal adjusted by the waveform adjustor, a demodulator for demodulating the digital signal adjusted by the phase adjuster, and a phase detector for detecting a phase of the digital signal adjusted by the phase adjuster, and a control signal output unit for outputting a frequency control signal on the basis of the detected phase signal to the second oscillator.
摘要翻译：数字相干接收装置包括用于输出固定频率的本地光信号的第一振荡器，将本地光信号与由接收机接收的光信号混合的混合单元，用于输出采样频率的采样信号的第二振荡器，用于将混合光信号转换为与采样信号同步的数字信号的转换器，用于调整转换的数字信号的波形失真的波形调节器，用于调整由波形调节器调节的数字信号的相位的相位调节器，解调器用于解调由相位调节器调节的数字信号，以及相位检测器，用于检测由相位调节器调节的数字信号的相位;以及控制信号输出单元，用于根据检测到的相位信号将频率控制信号输出到第二个振荡器。

7. 发明授权

US08594508B2 Optical transmission system 有权
标题翻译：光传输系统
公开(公告)号：US08594508B2
公开(公告)日：2013-11-26
申请号：US13137024
申请日：2011-07-15
申请人： Hisao Nakashima , Takeshi Hoshida , Takahito Tanimura , Toru Katagiri , Shoichiro Oda
发明人： Hisao Nakashima , Takeshi Hoshida , Takahito Tanimura , Toru Katagiri , Shoichiro Oda
IPC分类号： H04B10/00
CPC分类号： H04B10/2572 , H04B10/532 , H04B10/5561
摘要： An optical transmission system, where in an optical transmitter a detection bit having a specific pattern set according to the number of bits to be transmitted within one symbol time, is imparted with respect to a transmission signal in which transmission information has been encoded according to a preset format, and an optical signal generated by modulating light according to the transmission signal is transmitted to a transmission line. In an optical receiver, logic inversion or bit swap of received data is detected and compensated by using the detection bit included in the received signal, a decoding process of the compensated received signal is executed. As a result, when an optical signal capable of transmitting multi-bit information within one symbol time is transferred, it is possible to realize excellent transmission characteristics, by reliably compensating an error in received data caused by the modulation format or the multiplex system of the optical signal.
摘要翻译：一种光传输系统，其中在光发射机中，根据在一个符号时间内要发送的比特数的数量，具有特定模式集的检测比特，根据发送信号已被编码的发送信号预设格式和根据发送信号调制光产生的光信号被发送到传输线。在光接收机中，通过使用包含在接收信号中的检测位来检测和补偿接收数据的逻辑反转或位交换，执行经补偿的接收信号的解码处理。结果，当在一个符号时间内能够发送多位信息的光信号被传送时，通过可靠地补偿由调制格式或多路复用系统引起的接收数据中的错误，可以实现优异的传输特性光信号。

8. 发明授权

US08515277B2 Nonlinear distortion detecting circuit, optical receiver, optical transmission system, and method for detecting nonlinear distortion 有权
标题翻译：非线性失真检测电路，光接收机，光传输系统及非线性失真检测方法
公开(公告)号：US08515277B2
公开(公告)日：2013-08-20
申请号：US12910955
申请日：2010-10-25
申请人： Takahito Tanimura , Hisao Nakashima , Takeshi Hoshida
发明人： Takahito Tanimura , Hisao Nakashima , Takeshi Hoshida
IPC分类号： H04B10/08
CPC分类号： H04B10/07953
摘要： An apparatus includes a first estimator that estimates a signal quality based on an error correction number of an electrical signal obtained by photoelectrically converting a received optical signal; a second estimator that estimates a signal quality from which the influence of nonlinear effects is removed based on signals upstream and downstream of an identification calculator identifying the electrical signal; and a calculator that calculates the difference between the signal qualities estimated by the first and second estimators to calculate the amount of nonlinear effects.
摘要翻译：一种装置包括：第一估计器，其基于通过光电转换接收的光信号获得的电信号的纠错数来估计信号质量; 基于识别电信号的识别计算机的上游和下游的信号，估计消除非线性效应的影响的信号质量的第二估计器; 以及计算器，其计算由第一和第二估计器估计的信号质量之间的差以计算非线性效应的量。

9. 发明授权

US08116635B2 Polarization multiplexing and transmitting apparatus 有权
标题翻译：极化复用和发送设备
公开(公告)号：US08116635B2
公开(公告)日：2012-02-14
申请号：US12155262
申请日：2008-05-30
申请人： Takahito Tanimura , Takeshi Hoshida , Hisao Nakashima , Shoichiro Oda
发明人： Takahito Tanimura , Takeshi Hoshida , Hisao Nakashima , Shoichiro Oda
IPC分类号： H04B10/08
CPC分类号： H04J14/06 , H04B10/505 , H04B10/532 , H04B10/541 , H04B10/548 , H04B10/5561 , H04J14/08 , H04L5/04
摘要： A polarization multiplexing and transmitting apparatus generates polarization multiplexed light by multiplexing modulated signal components that having varying intensities and are in polarization states orthogonal to each other. The polarization multiplexing and transmitting apparatus includes a converting unit that converts light generated by a light source into signal components having a varying intensity synchronized with a clock signal input thereto and a varying intensity inversely synchronized with the clock signal, respectively; a modulating unit that modulates the signal components, respectively; and a polarization adjusting unit that orthogonalizes polarization states of the signal components.
摘要翻译：偏振复用和发送装置通过对具有变化的强度并且处于彼此正交的偏振状态的调制信号分量进行多路复用来产生偏振复用光。偏振复用和发送装置包括转换单元，其将由光源产生的光变换成具有与输入的时钟信号同步的变化强度的信号分量和与时钟信号反向同步的变化强度; 调制单元，分别调制信号分量; 以及使信号分量的偏振态正交化的偏振调整单元。

10. 发明申请

US20110150506A1 OPTICAL RECEIVER AND RECEIVING METHOD 审中-公开
标题翻译：光接收机和接收方式
公开(公告)号：US20110150506A1
公开(公告)日：2011-06-23
申请号：US12958828
申请日：2010-12-02
申请人： Takahito TANIMURA , Tomoo Takahara , Takeshi Hoshida
发明人： Takahito TANIMURA , Tomoo Takahara , Takeshi Hoshida
IPC分类号： H04B10/06
CPC分类号： H04B10/697 , H04L25/03019 , H04L27/0014 , H04L27/223 , H04L27/3818 , H04L2025/03535 , H04L2027/004 , H04L2027/0067
摘要： An optical receiver includes an optical front-end, a digital converter, a frequency-characteristic-difference reducing unit and an identifying unit. The optical front-end splits an input signal light into signal light components on a basis of local light and converts the split signal light components into electrical signals. The digital converter converts the electrical signals, converted by the optical front end, into digital signals. The frequency-characteristic-difference reducing unit reduces a frequency-characteristic difference between the digital signals converted by the digital converter. The identifying unit identifies each of the digital signals whose frequency-characteristic difference is reduced by the frequency-characteristic-difference reducing unit.
摘要翻译：光接收器包括光学前端，数字转换器，频率特征差减小单元和识别单元。光学前端在局部光的基础上将输入信号光分解为信号光分量，并将分离的信号光分量转换为电信号。数字转换器将由光学前端转换的电信号转换为数字信号。频率特性差减小单元降低由数字转换器转换的数字信号之间的频率特性差。识别单元通过频率特性差减小单元识别频率特性差减小的每个数字信号。

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