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1. 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。

2. 发明申请

US20080267638A1 OPTICAL RECEIVER 有权
标题翻译：光接收机
公开(公告)号：US20080267638A1
公开(公告)日：2008-10-30
申请号：US12104056
申请日：2008-04-16
申请人： Hisao NAKASHIMA , Takeshi HOSHIDA , Takahito TANIMURA
发明人： Hisao NAKASHIMA , Takeshi HOSHIDA , Takahito TANIMURA
IPC分类号： H04B10/06
CPC分类号： H04B10/611 , H04B10/60 , H04B10/6165
摘要： An optical mixing part mixing a received optical signal and local oscillator light in at least two kinds of phases and extracting at least two-system optical signals corresponding to each light phase; a photoelectric conversion part converting the at least two-system optical signals obtained in the optical mixing part into electric analog signals; an analog-to-digital conversion part converting the electric analog signals into digital signals; and a control part processing the digital signals thereby detecting a light phase difference between the respective systems in the optical mixing part and supplying a signal for correcting the light phase between the systems to the optical mixing part to control the optical mixing part so that the light phase difference becomes to zero or close to a desired value when the light phase difference has a shift from the desired value.
摘要翻译：一种光混合部分，将接收的光信号和至少两相的本地振荡光混合，并提取与每个光相对应的至少两系统的光信号; 将所述光混合部中获得的所述至少两系统的光信号转换成电模拟信号的光电转换部; 模拟数字转换部分将电模拟信号转换为数字信号; 以及控制部分处理数字信号，从而检测光混合部分中的各个系统之间的光相位差，并将用于校正系统之间的光相位的信号提供给光学混合部分，以控制光学混合部分，使得光当光相位差从期望值偏移时，相位差变为零或接近期望值。

3. 发明申请

US20120177383A1 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：US20120177383A1
公开(公告)日：2012-07-12
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
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。

4. 发明申请

US20100196017A1 DISTORTION COMPENSATING APPARATUS, OPTICAL RECEIVING APPARATUS, AND OPTICAL TRANSMITTING AND RECEIVING SYSTEM 有权
标题翻译：失灵补偿装置，光接收装置和光传输和接收系统
公开(公告)号：US20100196017A1
公开(公告)日：2010-08-05
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： H04B10/00 , H04B1/10 , H04B10/06
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。

5. 发明申请

US20120141131A1 OPTICAL RECEIVING APPARATUS AND METHOD 审中-公开
标题翻译：光接收装置及方法
公开(公告)号：US20120141131A1
公开(公告)日：2012-06-07
申请号：US13397268
申请日：2012-02-15
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： H04B10/06
CPC分类号： H04B10/677 , H04B10/60 , H04B10/69
摘要： An optical receiving apparatus compensates degradation of an optical signal received, based a division operation using the intensity of the optical signal. A receiving unit outputs a first electrical signal corresponding to the phase of the optical signal and a second electrical signal corresponding to the intensity of the optical signal. An analog first dividing unit and a second dividing unit divide the first electrical signal by the second electrical signal. A first ADC and a second ADC convert the divided electrical signal to a digital signal. An identifying unit identifies data of the optical signal based on calculation using the digital signal.
摘要翻译：光接收装置基于使用光信号的强度的分割操作来补偿所接收的光信号的劣化。接收单元输出对应于光信号的相位的第一电信号和对应于光信号的强度的第二电信号。模拟第一分割单元和第二分割单元将第一电信号除以第二电信号。第一ADC和第二ADC将分频电信号转换为数字信号。识别单元基于使用数字信号的计算来识别光信号的数据。

6. 发明申请

US20110097075A1 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，光传输系统和检测非线性失真的方法
公开(公告)号：US20110097075A1
公开(公告)日：2011-04-28
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。

7. 发明申请

US20090317092A1 OPTICAL RECEIVING APPARATUS AND DIGITAL RECEIVING CIRCUIT 有权
标题翻译：光接收设备和数字接收电路
公开(公告)号：US20090317092A1
公开(公告)日：2009-12-24
申请号：US12408176
申请日：2009-03-20
申请人： Hisao NAKASHIMA , Takeshi HOSHIDA , Takahito TANIMURA , Lei LI , Ling LIU
发明人： Hisao NAKASHIMA , Takeshi HOSHIDA , Takahito TANIMURA , Lei LI , Ling LIU
IPC分类号： H04B10/06
CPC分类号： H04B10/6165 , H04B10/61 , H04B10/611 , H04L7/0054 , H04L27/223
摘要： An optical receiving apparatus includes a combining unit that combines signal light and reference light; a optoelectric converting unit that converts, into electrical signals, two or more optical signals that enable reconstruction of a complex electric field signal of the signal light obtained by the combining unit; and a sampling clock generating unit that generates a sampling clock that has a frequency preset based on a symbol rate of the signal light and is asynchronous with the signal light. The optical receiving apparatus further includes a digital converting unit that samples at the frequency of the sampling clock signal, an electrical signal obtained by the optoelectric converting unit and converts the electrical signal into a digital signal; and a digital signal processing unit that demodulates a received signal based on a complex digital signal obtained from the digital signal obtained by the digital converting unit.
摘要翻译：光接收装置包括组合信号光和参考光的组合单元; 光电转换单元，其将电信号转换成能够重构由组合单元获得的信号光的复电场信号的两个或更多个光信号; 以及采样时钟产生单元，其生成具有基于信号光的符号率预设的频率并且与信号光异步的采样时钟。光接收装置还包括数字转换单元，以采样时钟信号的频率采样，由光电转换单元获得的电信号，并将该电信号转换为数字信号; 以及数字信号处理单元，其基于从由数字转换单元获得的数字信号获得的复数数字信号来解调接收信号。

8. 发明申请

US20080272943A1 ANALOG-TO-DIGITAL CONVERSION CONTROLLER, OPTICAL RECEIVING DEVICE, OPTICAL RECEIVING METHOD, AND WAVEFORM-DISTORTION COMPENSATING DEVICE 审中-公开
标题翻译：模拟数字转换控制器，光接收装置，光接收方法和波形失真补偿装置
公开(公告)号：US20080272943A1
公开(公告)日：2008-11-06
申请号：US11967394
申请日：2007-12-31
申请人： Takahito TANIMURA , Hisao NAKASHIMA , Takeshi HOSHIDA
发明人： Takahito TANIMURA , Hisao NAKASHIMA , Takeshi HOSHIDA
IPC分类号： H03M1/20 , H03M1/66
CPC分类号： H04L7/007 , H03M1/1255 , H04B10/697
摘要： An optical receiving device of the present invention receives optical signals from an optical transmitting device which uses a modulation format wherein an optical intensity waveform of each symbol is return-to-zero (RZ) pulse, and converts the received optical signals into digital signals by a conversion process of an analog to digital (AD) converter. A control-value calculating unit subsequent to the AD converter digitally processes the digital signals, retrieves an absolute value of the digital signals or a value corresponding one-to-one with the absolute value of the digital signals, estimates errors from an appropriate timing of a sampling timing in the AD converter based on the absolute value of the digital signals or the value corresponding one-to-one with the absolute value of the digital signals, and calculates a control value controlling the sampling timing based on the estimated errors. Based on the control value, a phase of a pulse regulating the sampling timing of AD conversion can be compensated.
摘要翻译：本发明的光接收装置接收来自光发送装置的光信号，该光发送装置采用调制格式，其中每个符号的光强度波形为归零（RZ）脉冲，并将接收到的光信号转换成数字信号模数转换器（AD）转换器的转换过程。 AD转换器之后的控制值计算单元对数字信号进行数字处理，用数字信号的绝对值检索数字信号的绝对值或与之对应的值，从适当的定时估计误差基于数字信号的绝对值的AD转换器中的采样定时或与数字信号的绝对值一一对应的值，并且基于估计的误差来计算控制采样定时的控制值。基于控制值，可以补偿调节AD转换的采样定时的脉冲的相位。

9. 发明申请

US20120106962A1 POLARIZATION MULTIPLEXING AND TRANSMITTING APPARATUS 有权
标题翻译：极化多路复用和传输设备
公开(公告)号：US20120106962A1
公开(公告)日：2012-05-03
申请号：US13348245
申请日：2012-01-11
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： H04J14/06
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

US20100046961A1 DISTORTION COMPENSATOR, OPTICAL RECEIVER, DISTORTION COMPENSATOR AND OPTICAL RECEIVER CONTROLLING METHODS, AND OPTICAL TRANSMISSION SYSTEM 有权
标题翻译：失真补偿器，光接收器，失真补偿器和光接收器控制方法和光传输系统
公开(公告)号：US20100046961A1
公开(公告)日：2010-02-25
申请号：US12543154
申请日：2009-08-18
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： H04B10/00 , H04B10/06 , H04B10/04
CPC分类号： H04J14/06 , H03F3/08 , H04B1/12 , H04B10/25133 , H04B10/697 , H04B2210/252
摘要： A distortion compensator, an optical receiver and a transmission system including an operation selectively compensating for linear waveform distortion exerted on an optical signal via a plurality of distortion compensators and compensating for nonlinear waveform distortion exerted on the optical signal using nonlinear distortion compensators.
摘要翻译：失真补偿器，光接收器和传输系统，其包括经由多个失真补偿器选择性地补偿施加在光信号上的线性波形失真的操作，并且使用非线性失真补偿器补偿施加在光信号上的非线性波形失真。

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