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公开(公告)号：US20120045208A1
公开(公告)日：2012-02-23
申请号：US13138958
申请日：2010-04-21
IPC分类号： H04J14/06
CPC分类号： H04B10/611 , H04B10/60 , H04B10/6166 , H04L27/223
摘要： A coherent receiver 1 assigns a first transmission signal to first transmission polarization, assigns a second transmission signal to second transmission polarization, and receives a quadrature multiplexed signal formed by applying quadrature multiplexing to the first transmission polarization and the second transmission polarization. The coherent receiver includes a detection means 10 for detecting the first transmission polarization and the second transmission polarization according to prescribed first reception polarization and second reception polarization and obtaining a first detected signal and a second detected signal; a quantization means 20 for quantizing the first detected signal and the second detected signal and obtaining a first quantized signal and a second quantized signal; and a signal processing means 30 for, when filtering the first quantized signal and the second quantized signal using a prescribed filtering control algorithm to form a first demodulated signal and a second demodulated signal respectively, adjusting filter coefficients of the filtering control algorithm according to the first quantized signal and the second quantized signal and the first demodulated signal and the second demodulated signal, and outputting the first demodulated signal and the second demodulated signal to a first output terminal and a second output terminal, respectively.
摘要翻译： 相干接收机1将第一传输信号分配给第一传输极化，将第二传输信号分配给第二传输极化，并且接收通过对第一透射偏振和第二透射偏振应用正交多路复用形成的正交多路复用信号。 相干接收机包括：检测装置10，用于根据规定的第一接收极化和第二接收极化检测第一透射偏振和第二透射偏振，并获得第一检测信号和第二检测信号; 量化装置20，用于量化第一检测信号和第二检测信号，并获得第一量化信号和第二量化信号; 以及信号处理装置30，用于当使用规定的滤波控制算法对第一量化信号和第二量化信号进行滤波以分别形成第一解调信号和第二解调信号时，根据第一信号调整滤波器控制算法的滤波器系数 量化信号和第二量化信号以及第一解调信号和第二解调信号，并将第一解调信号和第二解调信号分别输出到第一输出端和第二输出端。
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公开(公告)号：US08515293B2
公开(公告)日：2013-08-20
申请号：US13138958
申请日：2010-04-21
IPC分类号： H04B10/06
CPC分类号： H04B10/611 , H04B10/60 , H04B10/6166 , H04L27/223
摘要： A coherent receiver 1 assigns a first transmission signal to first transmission polarization, assigns a second transmission signal to second transmission polarization, and receives a quadrature multiplexed signal formed by applying quadrature multiplexing to the first transmission polarization and the second transmission polarization. The coherent receiver includes a detection means 10 for detecting the first transmission polarization and the second transmission polarization according to prescribed first reception polarization and second reception polarization and obtaining a first detected signal and a second detected signal; a quantization means 20 for quantizing the first detected signal and the second detected signal and obtaining a first quantized signal and a second quantized signal; and a signal processing means 30 for, when filtering the first quantized signal and the second quantized signal using a prescribed filtering control algorithm to form a first demodulated signal and a second demodulated signal respectively, adjusting filter coefficients of the filtering control algorithm according to the first quantized signal and the second quantized signal and the first demodulated signal and the second demodulated signal, and outputting the first demodulated signal and the second demodulated signal to a first output terminal and a second output terminal, respectively.
摘要翻译： 相干接收机1将第一传输信号分配给第一传输极化，将第二传输信号分配给第二传输极化，并且接收通过对第一透射偏振和第二透射偏振应用正交多路复用形成的正交多路复用信号。 相干接收机包括检测装置10，用于根据规定的第一接收极化和第二接收极化检测第一透射偏振和第二透射偏振，并获得第一检测信号和第二检测信号; 量化装置20，用于量化第一检测信号和第二检测信号，并获得第一量化信号和第二量化信号; 以及信号处理装置30，用于当使用规定的滤波控制算法对第一量化信号和第二量化信号进行滤波以分别形成第一解调信号和第二解调信号时，根据第一信号调整滤波器控制算法的滤波器系数 量化信号和第二量化信号以及第一解调信号和第二解调信号，并将第一解调信号和第二解调信号分别输出到第一输出端和第二输出端。
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3.发明申请COHERENT OPTICAL RECEIVING APPARATUS, COHERENT OPTICAL COMMUNICATIONS SYSTEM EMPLOYING SAME, AND COHERENT OPTICAL COMMUNICATIONS METHOD 审中-公开相关光接收装置，使用相同的光通信系统和相关的光通信方法公开(公告)号：US20120082464A1
公开(公告)日：2012-04-05
申请号：US13377878
申请日：2010-12-24
CPC分类号： H04B10/6166 , H04B10/0799 , H04B10/611 , H04B10/614
摘要： With respect to a coherent optical receiving apparatus, a polarization multiplexing light signal, whereupon a first signal is placed upon a first polarized wave light and a second signal is placed upon a second polarized wave light, is polarization divided upon the transmitting side thereof, and the first signal and the second signal cannot be received in correspondence with the transmitting side. Accordingly, disclosed is a coherent optical receiving apparatus, comprising a coherent light receiving unit that detects coherent light, and a signal processing unit that carries out signal processing that is set with control coefficients. The coherent light receiving unit receives a first polarized light that is modulated with a first transmitted signal and outputs a first detected signal, and simultaneously receives the first polarized light with a second polarized light that is modulated with a second transmitted signal, and outputs a second detected signal. The signal processing unit establishes a first control coefficient on the basis of the first detected signal, and establishes a second control coefficient on the basis of the first control coefficient and the second detected signal, and employs the second control coefficient to output a first received signal corresponding to the first transmitted signal, and a second received signal corresponding to the second transmitted signal.
摘要翻译： 对于相干光接收装置，偏振复用光信号，第一信号被放置在第一偏振光上，第二信号被放置在第二偏振光上，在其发射侧被极化分割，并且 第一信号和第二信号不能与发送侧对应地被接收。 因此，公开了一种相干光接收装置，包括检测相干光的相干光接收单元和执行用控制系数设置的信号处理的信号处理单元。 相干光接收单元接收利用第一发送信号进行了调制的第一偏振光并输出第一检测信号，同时以第二发送信号调制的第二偏振光接收第一偏振光，并输出第二偏振光 检测信号。 信号处理单元基于第一检测信号建立第一控制系数，并且基于第一控制系数和第二检测信号建立第二控制系数，并且采用第二控制系数来输出第一接收信号 对应于第一发送信号，以及对应于第二发送信号的第二接收信号。
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4.发明授权公开(公告)号：US09014574B2
公开(公告)日：2015-04-21
申请号：US14002266
申请日：2012-02-28
CPC分类号： H04J14/06 , H04B10/614 , H04B10/6166
摘要： In order to appropriately demultiplex the polarization multiplexed BPSK signal without using a training sequence and decreasing the resistance to a frequency offset, an optical receiver includes a coherent optical detection unit receiving an optical signal in which BPSK modulated carrier waves are polarization-multiplexed, performing coherent detection by mixing the received optical signal with local light, and outputting first electrical signals corresponding to the carrier waves; a butterfly FIR filter receiving the first electrical signals and extracting second electrical signals corresponding to each of the carrier waves from the first electrical signals; and a coefficient control unit for calculating a sum of respective phases of the second electrical signals output from the butterfly FIR filter, adaptively controlling tap coefficients of the butterfly FIR filter so that the calculated phase sum may become equal to 0 or π, and outputting tap coefficients after being controlled to the butterfly FIR filter.
摘要翻译： 为了适当地解复用偏振复用的BPSK信号而不使用训练序列并降低对频偏的电阻，光接收机包括相干光检测单元，其接收光信号，其中BPSK调制载波被偏振复用，执行相干 通过将接收的光信号与本地光混合来检测，并输出与载波对应的第一电信号; 蝶形FIR滤波器，接收第一电信号并从第一电信号中提取对应于每个载波的第二电信号; 以及系数控制单元，用于计算从蝶形FIR滤波器输出的第二电信号的各相的和，自适应地控制蝶形FIR滤波器的抽头系数，使得所计算的相位和可以变为等于0或者pgr;并输出 抽头系数被控制到蝴蝶FIR滤波器。
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5.发明授权Equalization signal processor, optical receiver including the same, and method for equalization signal processing 有权均衡信号处理器，包括相同的光接收机以及均衡信号处理方法公开(公告)号：US09160459B2
公开(公告)日：2015-10-13
申请号：US14362784
申请日：2011-12-07
IPC分类号： H03H7/30 , H04B10/61 , H04B10/079
CPC分类号： H04B10/6162 , H04B10/0795 , H04B10/616
摘要： It becomes difficult to perform the optimum equalization signal processing in coherent receiving systems if a channel response in an optical fiber transmission line includes a factor without temporal centrosymmetry, therefore, an equalization signal processor according to an exemplary aspect of the invention includes an equalization filter means configured to receive digital signals by coherent receiving systems; a coefficient control means configured to control coefficients defining characteristics of the equalization filter means; a significant coefficient holding means configured to hold significant coefficients of significant values among initial values of the coefficients; a significant coefficient positioning means configured to determine a significant coefficient position, a position of the significant coefficients in the initial values, so that equalization characteristics of the equalization filter means may be optimized; and a significant coefficient setting means configured to allocate the significant coefficients to the significant coefficient position.
摘要翻译： 如果光纤传输线路中的信道响应包含没有时间中心对称性的因素，则在相干接收系统中执行最佳均衡信号处理变得困难，因此，根据本发明示例性方面的均衡信号处理器包括均衡滤波器装置 被配置为通过相干接收系统接收数字信号; 系数控制装置，被配置为控制限定所述均衡滤波器装置的特性的系数; 有效系数保持装置，被配置为在系数的初始值中保持有效值的有效系数; 确定有效系数位置的有效系数定位装置，初始值中有效系数的位置，使均衡滤波器装置的均衡特性可以被优化; 以及重要系数设定装置，被配置为将有效系数分配给有效系数位置。
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6.发明申请公开(公告)号：US20130336654A1
公开(公告)日：2013-12-19
申请号：US14002266
申请日：2012-02-28
IPC分类号： H04J14/06
CPC分类号： H04J14/06 , H04B10/614 , H04B10/6166
摘要： In order to appropriately demultiplex the polarization multiplexed BPSK signal without using a training sequence and decreasing the resistance to a frequency offset, an optical receiver includes a coherent optical detection unit receiving an optical signal in which BPSK modulated carrier waves are polarization-multiplexed, performing coherent detection by mixing the received optical signal with local light, and outputting first electrical signals corresponding to the carrier waves; a butterfly FIR filter receiving the first electrical signals and extracting second electrical signals corresponding to each of the carrier waves from the first electrical signals; and a coefficient control unit for calculating a sum of respective phases of the second electrical signals output from the butterfly FIR filter, adaptively controlling tap coefficients of the butterfly FIR filter so that the calculated phase sum may become equal to 0 or π, and outputting tap coefficients after being controlled to the butterfly FIR filter.
摘要翻译： 为了适当地解复用偏振复用的BPSK信号而不使用训练序列并降低对频偏的电阻，光接收机包括相干光检测单元，其接收光信号，其中BPSK调制载波被偏振复用，执行相干 通过将接收的光信号与本地光混合来检测，并输出与载波对应的第一电信号; 蝶形FIR滤波器，接收第一电信号并从第一电信号中提取对应于每个载波的第二电信号; 以及系数控制单元，用于计算从蝶形FIR滤波器输出的第二电信号的各相的和，自适应地控制蝶形FIR滤波器的抽头系数，使得计算出的相位和可以变为等于0或pi，并输出抽头 系数被控制到蝴蝶FIR滤波器。
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7.发明申请EQUALIZATION SIGNAL PROCESSOR, OPTICAL RECEIVER INCLUDING THE SAME, AND METHOD FOR EQUALIZATION SIGNAL PROCESSING 有权均衡信号处理器，包括其的光学接收器和用于均衡信号处理的方法公开(公告)号：US20140328585A1
公开(公告)日：2014-11-06
申请号：US14362784
申请日：2011-12-07
IPC分类号： H04B10/61 , H04B10/079
CPC分类号： H04B10/6162 , H04B10/0795 , H04B10/616
摘要： It becomes difficult to perform the optimum equalization signal processing in coherent receiving systems if a channel response in an optical fiber transmission line includes a factor without temporal centrosymmetry, therefore, an equalization signal processor according to an exemplary aspect of the invention includes an equalization filter means configured to receive digital signals by coherent receiving systems; a coefficient control means configured to control coefficients defining characteristics of the equalization filter means; a significant coefficient holding means configured to hold significant coefficients of significant values among initial values of the coefficients; a significant coefficient positioning means configured to determine a significant coefficient position, a position of the significant coefficients in the initial values, so that equalization characteristics of the equalization filter means may be optimized; and a significant coefficient setting means configured to allocate the significant coefficients to the significant coefficient position.
摘要翻译： 如果光纤传输线路中的信道响应包含没有时间中心对称性的因素，则在相干接收系统中执行最佳均衡信号处理变得困难，因此根据本发明示例性方面的均衡信号处理器包括均衡滤波器装置 被配置为通过相干接收系统接收数字信号; 系数控制装置，被配置为控制限定所述均衡滤波器装置的特性的系数; 有效系数保持装置，被配置为在系数的初始值中保持有效值的有效系数; 确定有效系数位置的有效系数定位装置，初始值中有效系数的位置，使均衡滤波器装置的均衡特性可以被优化; 以及重要系数设定装置，被配置为将有效系数分配给有效系数位置。
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8.发明授权Coherent optical receiver, apparatus and method for detecting inter-channel skew in coherent optical receiver 有权相干光接收机，用于检测相干光接收机中的信道间偏斜的装置和方法公开(公告)号：US08953953B2
公开(公告)日：2015-02-10
申请号：US14082875
申请日：2013-11-18
申请人： Junichi Abe , Wakako Yasuda , Kiyoshi Fukuchi
发明人： Junichi Abe , Wakako Yasuda , Kiyoshi Fukuchi
IPC分类号： H04B10/00 , H04B10/61 , H04B10/077
CPC分类号： H04B10/616 , H04B10/0775 , H04B10/6164 , H04B10/6165
摘要： In a coherent optical receiver, sufficient demodulation becomes impossible and consequently receiving performance deteriorates if an inter-channel skew arises, therefore, a method for detecting inter-channel skew in a coherent optical receiver according to an exemplary aspect of the invention includes the steps of: outputting a plurality of optical signals separated into a plurality of signal components by making a test light from a test light source interfere with a local light from a local light source; detecting the optical signals and outputting detected electrical signals; quantizing the detected electrical signals and outputting quantized signals; performing a fast Fourier transform process on the quantized signals; and calculating a difference in propagation delay between the plurality of signal components on the basis of a plurality of peak values in the results of performing the fast Fourier transform process.
摘要翻译： 在相干光接收机中，如果出现信道间偏移，则不能进行足够的解调，因此接收性能恶化，因此根据本发明的示例性方面的用于检测相干光接收机中的信道间偏移的方法包括以下步骤： 通过使来自测试光源的测试光与本地光源的局部光干扰而输出分离成多个信号分量的多个光信号; 检测光信号并输出检测到的电信号; 量化检测到的电信号并输出量化信号; 对量化信号执行快速傅立叶变换处理; 以及基于执行快速傅立叶变换处理的结果中的多个峰值来计算多个信号分量之间的传播延迟的差异。
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9.发明授权Coherent optical receiver, apparatus and method for detecting interchannel skew in coherent optical receiver 有权相干光接收机，用于检测相干光接收机中的信道间偏斜的装置和方法公开(公告)号：US08634727B2
公开(公告)日：2014-01-21
申请号：US13696516
申请日：2011-05-13
申请人： Wakako Yasuda , Junichi Abe , Kiyoshi Fukuchi
发明人： Wakako Yasuda , Junichi Abe , Kiyoshi Fukuchi
IPC分类号： H04B10/06
CPC分类号： H04B10/616 , H04B10/6151 , H04J14/02 , H04J14/06
摘要： In a coherent optical receiver, sufficient demodulation becomes impossible and consequently receiving performance deteriorates if an interchannel skew arises, therefore, a coherent optical receiver according to an exemplary aspect of the invention includes a local light source; a 90-degree hybrid circuit; an optoelectronic converter; an analog-to-digital converter; and a digital signal processing unit, wherein the 90-degree hybrid circuit makes multiplexed signal light interfere with local light from the local light source, and outputs a plurality of optical signals separated into a plurality of signal components; the optoelectronic converter detects the optical signals and outputs detected electrical signals; the analog-to-digital converter quantizes the detected electrical signals and outputs quantized signals; and the digital signal processing unit includes a skew compensation unit for compensating a difference in propagation delay between the plurality of signal components, and a demodulation unit for demodulating the quantized signals.
摘要翻译： 在相干光接收机中，如果出现通道间偏斜，则不能进行足够的解调，因此接收性能恶化，因此根据本发明的示例性方面的相干光接收机包括本地光源; 90度混合电路; 光电转换器; 一个模拟 - 数字转换器; 以及数字信号处理单元，其中所述90度混合电路使多路复用信号光干扰来自所述本地光源的局部光，并且输出分离成多个信号分量的多个光信号; 光电转换器检测光信号并输出检测到的电信号; 模数转换器对检测到的电信号进行量化并输出量化信号; 并且数字信号处理单元包括用于补偿多个信号分量之间的传播延迟差的偏斜补偿单元和用于解调量化信号的解调单元。
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10.发明授权Coherent optical receiver, apparatus and method for detecting inter-channel skew in coherent optical receiver 有权相干光接收机，用于检测相干光接收机中的信道间偏斜的装置和方法公开(公告)号：US08626000B2
公开(公告)日：2014-01-07
申请号：US13505199
申请日：2011-09-02
申请人： Junichi Abe , Wakako Yasuda , Kiyoshi Fukuchi
发明人： Junichi Abe , Wakako Yasuda , Kiyoshi Fukuchi
CPC分类号： H04B10/616 , H04B10/0775 , H04B10/6164 , H04B10/6165
摘要： In a coherent optical receiver, sufficient demodulation becomes impossible and consequently receiving performance deteriorates if an inter-channel skew arises, therefore, a coherent optical receiver according to an exemplary aspect of the invention includes a local light source, a 90° hybrid circuit, an optoelectronic converter, an analog to digital converter, and a digital signal processing unit; wherein the 90° hybrid circuit makes multiplexed signal light interfere with local light from the local light source, and outputs a plurality of optical signals separated into a plurality of signal components; the optoelectronic converter detects the optical signals and outputs detected electrical signals; the analog to digital converter quantizes the detected electrical signals and outputs quantized signals; the digital signal processing unit includes a skew compensation unit for compensating a difference in propagation delay between the plurality of signal components, and an FFT operation unit for performing a fast Fourier transform process on the quantized signals; and wherein the difference in propagation delay is calculated on the basis of a plurality of peak values with a central focus on one peak value in the results of performing the fast Fourier transform process.
摘要翻译： 在相干光接收机中，如果发生信道间偏斜，则不可能进行足够的解调，因此接收性能恶化，因此，根据本发明的示例性方面的相干光接收机包括本地光源，90°混合电路， 光电转换器，模数转换器和数字信号处理单元; 其中所述90°混合电路使多路复用信号光干扰来自所述本地光源的局部光，并且输出分离成多个信号分量的多个光信号; 光电转换器检测光信号并输出检测到的电信号; 模数转换器对检测到的电信号进行量化并输出量化信号; 数字信号处理单元包括用于补偿多个信号分量之间的传播延迟差的偏斜补偿单元和用于对量化信号执行快速傅里叶变换处理的FFT运算单元; 并且其中基于执行快速傅里叶变换处理的结果中的中心聚焦于一个峰值的多个峰值来计算传播延迟的差异。
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