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1. 发明申请

US20110013907A1 MULTI-VALUE OPTICAL TRANSMITTER 有权
标题翻译：多值光传输器
公开(公告)号：US20110013907A1
公开(公告)日：2011-01-20
申请号：US12826129
申请日：2010-06-29
申请人： Takashi SUGIHARA , Soichiro Kametani , Takashi Mizuochi
发明人： Takashi SUGIHARA , Soichiro Kametani , Takashi Mizuochi
IPC分类号： H04B17/00
CPC分类号： H04B10/50575 , G02F1/0123 , G02F1/2255 , H04B10/564
摘要： Provided is a multi-value optical transmitter in which a DC bias may be controlled to be stabilized so as to obtain stable optical transmission signal quality in multi-value modulation using a dual-electrode MZ modulator. The multi-value optical transmitter includes: D/A converters for performing D/A conversion on first and second modulation data which are set based on an input data series, so as to generate a first and a second multi-value signal, respectively; a dual-electrode MZ modulator including phase modulators for modulating light from a light source based on the first multi-value signal and the second multi-value signal, so as to combine optical signals from the phase modulators to output the optical multi-value signal; an optical output power monitor for detecting average power of the optical multi-value signal; and a DC bias control unit for controlling a DC bias for the dual-electrode MZ modulator, so as to maximize the average power.
摘要翻译：提供了一种多值光发射机，其中可以将DC偏压控制为稳定，以便使用双电极MZ调制器在多值调制中获得稳定的光传输信号质量。多值光发射机包括：D / A转换器，用于对基于输入数据序列设置的第一和第二调制数据执行D / A转换，以分别产生第一和第二多值信号; 一种双电极MZ调制器，包括基于第一多值信号和第二多值信号调制来自光源的光的相位调制器，以便组合来自相位调制器的光信号以输出光学多值信号 ; 用于检测光学多值信号的平均功率的光输出功率监视器; 以及用于控制双电极MZ调制器的DC偏压的DC偏置控制单元，以使平均功率最大化。

2. 发明授权

US08718487B2 Optical transmitter 有权
标题翻译：光发射机
公开(公告)号：US08718487B2
公开(公告)日：2014-05-06
申请号：US13140955
申请日：2010-01-13
申请人： Takashi Sugihara , Soichiro Kametani , Takashi Mizuochi , Yoshiaki Konishi
发明人： Takashi Sugihara , Soichiro Kametani , Takashi Mizuochi , Yoshiaki Konishi
IPC分类号： H04B10/00
CPC分类号： H04L27/36 , H04B10/5053 , H04B10/5055 , H04B10/516
摘要： An optical transmitter for converting an input data series into an optical multi-level signal and for outputting the same, includes an LUT in which data for executing optical multi-level modulation is stored and from which first modulation data and second modulation data are output based on the input data series. A DAC converts the first modulation data by D/A conversion to generate a first multi-level signal. A DAC converts the second modulation data by D/A conversion to generate a second multi-level signal. A dual-electrode MZ modulator includes a first phase modulator for modulating light from a light source in accordance with the first multi-level signal and a second phase modulator for modulating light from the light source in accordance with the second multi-level signal, and combines an optical signal from the first phase modulator and an optical signal from the second phase modulator to output the optical multi-level signal.
摘要翻译：用于将输入数据序列转换为光学多级信号并用于输出的光发送器包括：LUT，其中存储用于执行光学多电平调制的数据，并从其输出第一调制数据和第二调制数据在输入数据系列上。 DAC通过D / A转换来转换第一调制数据以产生第一多电平信号。 DAC通过D / A转换来转换第二调制数据以产生第二多电平信号。双电极MZ调制器包括用于根据第一多电平信号调制来自光源的光的第一相位调制器和用于根据第二多电平信号调制来自光源的光的第二相位调制器，以及组合来自第一相位调制器的光信号和来自第二相位调制器的光信号以输出光多电平信号。

3. 发明授权

US08463138B2 Multi-value optical transmitter 有权
标题翻译：多值光发射机
公开(公告)号：US08463138B2
公开(公告)日：2013-06-11
申请号：US12826129
申请日：2010-06-29
申请人： Takashi Sugihara , Soichiro Kametani , Takashi Mizuochi
发明人： Takashi Sugihara , Soichiro Kametani , Takashi Mizuochi
IPC分类号： H04B10/04 , H04B10/12
CPC分类号： H04B10/50575 , G02F1/0123 , G02F1/2255 , H04B10/564
摘要： Provided is a multi-value optical transmitter in which a DC bias may be controlled to be stabilized so as to obtain stable optical transmission signal quality in multi-value modulation using a dual-electrode MZ modulator. The multi-value optical transmitter includes: D/A converters for performing D/A conversion on first and second modulation data which are set based on an input data series, so as to generate a first and a second multi-value signal, respectively; a dual-electrode MZ modulator including phase modulators for modulating light from a light source based on the first multi-value signal and the second multi-value signal, so as to combine optical signals from the phase modulators to output the optical multi-value signal; an optical output power monitor for detecting average power of the optical multi-value signal; and a DC bias control unit for controlling a DC bias for the dual-electrode MZ modulator, so as to maximize the average power.
摘要翻译：提供了一种多值光发射机，其中可以将DC偏压控制为稳定，以便使用双电极MZ调制器在多值调制中获得稳定的光传输信号质量。多值光发射机包括：D / A转换器，用于对基于输入数据序列设置的第一和第二调制数据执行D / A转换，以分别产生第一和第二多值信号; 一种双电极MZ调制器，包括基于第一多值信号和第二多值信号调制来自光源的光的相位调制器，以便组合来自相位调制器的光信号以输出光学多值信号 ; 用于检测光学多值信号的平均功率的光输出功率监视器; 以及用于控制双电极MZ调制器的DC偏压的DC偏置控制单元，以使平均功率最大化。

4. 发明申请

US20110255876A1 OPTICAL TRANSMITTER 有权
标题翻译：光学发射器
公开(公告)号：US20110255876A1
公开(公告)日：2011-10-20
申请号：US13140955
申请日：2010-01-13
申请人： Takashi Sugihara , Soichiro Kametani , Takashi Mizuochi , Yoshiaki Konishi
发明人： Takashi Sugihara , Soichiro Kametani , Takashi Mizuochi , Yoshiaki Konishi
IPC分类号： H04B10/04
CPC分类号： H04L27/36 , H04B10/5053 , H04B10/5055 , H04B10/516
摘要： An optical transmitter for converting an input data series into an optical multi-level signal and for outputting the same, includes an LUT in which data for executing optical multi-level modulation is stored and from which first modulation data and second modulation data are output based on the input data series. A DAC converts the first modulation data by D/A conversion to generate a first multi-level signal. A DAC converts the second modulation data by D/A conversion to generate a second multi-level signal. A dual-electrode MZ modulator includes a first phase modulator for modulating light from a light source in accordance with the first multi-level signal and a second phase modulator for modulating light from the light source in accordance with the second multi-level signal, and combines an optical signal from the first phase modulator and an optical signal from the second phase modulator to output the optical multi-level signal.
摘要翻译：用于将输入数据序列转换为光学多级信号并用于输出的光发送器包括：LUT，其中存储用于执行光学多电平调制的数据，并从其输出第一调制数据和第二调制数据在输入数据系列上。 DAC通过D / A转换来转换第一调制数据以产生第一多电平信号。 DAC通过D / A转换来转换第二调制数据以产生第二多电平信号。双电极MZ调制器包括用于根据第一多电平信号调制来自光源的光的第一相位调制器和用于根据第二多电平信号调制来自光源的光的第二相位调制器，以及组合来自第一相位调制器的光信号和来自第二相位调制器的光信号以输出光多电平信号。

5. 发明授权

US08645806B2 Optical receiving apparatus and optical receiving method 有权
标题翻译：光接收装置及光接收方式
公开(公告)号：US08645806B2
公开(公告)日：2014-02-04
申请号：US12775825
申请日：2010-05-07
申请人： Takashi Sugihara , Takashi Mizuochi , Kazuo Kubo
发明人： Takashi Sugihara , Takashi Mizuochi , Kazuo Kubo
IPC分类号： H03M13/45
CPC分类号： H04L25/067
摘要： An optical receiving apparatus includes: an A/D converting circuit; a received-signal demodulating circuit that demodulates a received digital signal from the A/D converting circuit into an m-bit received signal; a soft-decision-data generating circuit that generates n-bit (n≦m) soft-decision data based on the m-bit received signal; and an error correcting circuit that performs error correction based on the n-bit soft-decision data and outputs an error-corrected received signal. The soft-decision-data generating circuit generates soft-decision data of n bits (n=p+1) that corresponds to a determination result according to 2n−1 soft-decision thresholds, by using an MSB of the m-bit received signal as hard-decision data, and by using, as reliability information, a result of comparison between a plurality of bits (k bits, where k≦m) on an MSB side of the m-bit received signal and a fixed threshold, or p bits (p≦m−k) selected from (m−k) bits on an LSB side of the m-bit received signal.
摘要翻译：一种光接收装置，包括：A / D转换电路; 接收信号解调电路，将接收到的数字信号从A / D转换电路解调为m位接收信号; 软判决数据产生电路，其基于所述m位接收信号产生n位（n @ m）个软判决数据; 以及错误校正电路，其基于n位软判决数据进行纠错，并输出纠错接收信号。软判决数据生成电路通过使用m比特接收信号的MSB，生成与根据2n-1个软判定阈值的判定结果对应的n位（n = p + 1）的软判决数据作为硬判决数据，并且通过使用作为可靠性信息的m位接收信号的MSB侧的多个位（k位，其中k @ m）与固定阈值之间的比较结果，或者p 从m位接收信号的LSB侧的（mk）位中选择的位（p @ mk）。

6. 发明授权

US08495475B2 FEC frame structuring device and FEC frame structuring method 有权
标题翻译： FEC帧结构设备和FEC帧结构方法
公开(公告)号：US08495475B2
公开(公告)日：2013-07-23
申请号：US12767120
申请日：2010-04-26
申请人： Kazuo Kubo , Takashi Mizuochi , Takashi Sugihara
发明人： Kazuo Kubo , Takashi Mizuochi , Takashi Sugihara
IPC分类号： G06F11/00
CPC分类号： H03M13/2792 , H03M13/1102 , H03M13/1515 , H03M13/152 , H03M13/23 , H03M13/2906 , H03M13/2933 , H03M13/2936 , H03M13/2966 , H04J3/1652 , H04J2203/0089 , H04L1/0041 , H04L1/0065 , H04L2001/0096
摘要： An FEC frame structuring device includes a multi-lane distributing unit that distributes a data frame to be transmitted to n lanes, FEC coding units each performs FEC coding of the distributed data frame independently for each of the n lanes to generate an FEC frame, a multiplexing unit that multiplexes the FEC frame from the FEC coding units by relating to m channels of an optical signal, a demultiplexing unit that demultiplexes the m channels of the received optical signal by relating to the n lanes, FEC decoding units each performs FEC decoding of the demultiplexed FEC frame independently for each of the n lanes, and a multi-lane synchronizing unit that synchronizes the n lanes with each other after the FEC decoding performed by the FEC decoding units to reconstruct the original data frame.
摘要翻译： FEC帧结构设备包括分配要发送的数据帧到n个通道的多通道分配单元，FEC编码单元各自独立地对n个通道中的每一个执行分布式数据帧的FEC编码以生成FEC帧，多路复用单元，其通过与光信号的m个信道相关的FEC编码单元来复用FEC帧;解复用单元，通过与n个通道相关来对接收到的光信号的m个信道进行解复用，FEC解码单元各自执行FEC解码对于n个通道中的每一个独立地解复用的FEC帧，以及多个通道同步单元，其在由FEC解码单元执行的FEC解码之后使n个通道彼此同步以重建原始数据帧。

7. 发明授权

US07302188B2 Disperse equalizer and disperse equalizing method 有权
标题翻译：分散均衡器和分散均衡法
公开(公告)号：US07302188B2
公开(公告)日：2007-11-27
申请号：US10471368
申请日：2003-01-27
申请人： Takashi Sugihara , Takashi Mizuochi
发明人： Takashi Sugihara , Takashi Mizuochi
IPC分类号： H04B10/12
CPC分类号： H04B10/25133 , H04B2210/252
摘要： If no alarm is input from an optical receiver, an FEC decoder, or a client signal monitor, a control circuit controls a variable dispersion equalizer such that a transmission error becomes smaller using information on the number of error corrections obtained from the FEC decoder and fixes a dispersion equalization value in the event that the error becomes equal to or lower than a specified value. If the alarm information is input, the control circuit switches control over the variable dispersion equalizer from an ordinary control to a search mode control for searching an optimal dispersion equalization value in a wide range to thereby search the optimal dispersion equalization value at a higher speed.
摘要翻译：如果没有从光接收器，FEC解码器或客户信号监视器输入报警，则控制电路使用关于从FEC解码器获得的纠错数量的信息来控制可变色散均衡器使得传输误差变小，在误差变得等于或低于指定值的情况下的色散均衡值。如果输入了报警信息，则控制电路将可变色散均衡器的控制从普通控制切换到搜索模式控制，以搜索宽范围内的最佳色散均衡值，从而以更高的速度搜索最佳色散均衡值。

8. 发明申请

US20120201546A1 PRE-EQUALIZATION OPTICAL TRANSMITTER AND PRE-EQUALIZATION OPTICAL FIBER TRANSMISSION SYSTEM 审中-公开
标题翻译：预均衡光传输和预均衡光纤传输系统
公开(公告)号：US20120201546A1
公开(公告)日：2012-08-09
申请号：US13498626
申请日：2010-10-19
申请人： Takashi Mizuochi , Takashi Sugihara
发明人： Takashi Mizuochi , Takashi Sugihara
IPC分类号： H04B10/12 , H04B10/04
CPC分类号： H04B10/25137 , H04B10/505 , H04B10/5162 , H04B2210/254
摘要： A pre-equalization optical transmitter includes: an RZ conversion circuit for generating an RZ-type input data sequence based on an NRZ-type input data sequence and a clock that is twice the speed of the NRZ-type input data sequence; a digital filter for generating pre-equalized data by a convolution operation between the RZ-type input data sequence and a desired transfer function corresponding to the wavelength dispersion of an optical fiber transmission path; D/A converters for performing D/A conversion on the pre-equalized data to output analog pre-equalized data; and a vector modulator for modulating light from a laser light source based on the analog pre-equalized data to output an RZ-type optical signal.
摘要翻译：预均衡光发射机包括：RZ转换电路，用于基于NRZ型输入数据序列和NRZ型输入数据序列的速度的两倍的时钟产生RZ型输入数据序列; 数字滤波器，用于通过RZ型输入数据序列与对应于光纤传输路径的波长色散的期望传输函数之间的卷积运算产生预均衡数据; D / A转换器，用于对预均衡数据执行D / A转换以输出模拟预均衡数据; 以及用于基于所述模拟预均衡数据调制来自激光光源的光的矢量调制器，以输出RZ型光信号。

9. 发明申请

US20100287450A1 OPTICAL RECEIVING APPARATUS AND OPTICAL RECEIVING METHOD 有权
标题翻译：光接收装置和光接收方法
公开(公告)号：US20100287450A1
公开(公告)日：2010-11-11
申请号：US12775825
申请日：2010-05-07
申请人： Takashi Sugihara , Takashi Mizuochi , Kazuo Kubo
发明人： Takashi Sugihara , Takashi Mizuochi , Kazuo Kubo
IPC分类号： H03M13/45 , G06F11/10 , H04B10/06
CPC分类号： H04L25/067
摘要： An optical receiving apparatus includes: an A/D converting circuit; a received-signal demodulating circuit that demodulates a received digital signal from the A/D converting circuit into an m-bit received signal; a soft-decision-data generating circuit that generates n-bit (n≦m) soft-decision data based on the m-bit received signal; and an error correcting circuit that performs error correction based on the n-bit soft-decision data and outputs an error-corrected received signal. The soft-decision-data generating circuit generates soft-decision data of n bits (n=p+1) that corresponds to a determination result according to 2n−1 soft-decision thresholds, by using an MSB of the m-bit received signal as hard-decision data, and by using, as reliability information, a result of comparison between a plurality of bits (k bits, where k≦m) on an MSB side of the m-bit received signal and a fixed threshold, or p bits (p≦m−k) selected from (m−k) bits on an LSB side of the m-bit received signal.
摘要翻译：一种光接收装置，包括：A / D转换电路; 接收信号解调电路，将接收到的数字信号从A / D转换电路解调为m位接收信号; 软判决数据产生电路，其基于所述m位接收信号产生n位（n＆nl; m）个软判决数据; 以及错误校正电路，其基于n位软判决数据进行纠错，并输出纠错接收信号。软判决数据生成电路通过使用m比特接收信号的MSB，生成与根据2n-1个软判定阈值的判定结果对应的n位（n = p + 1）的软判决数据作为硬判决数据，并且通过使用作为可靠性信息的m位接收信号的MSB侧的多个比特（k比特，其中k比特，其中k和nlE; m）与固定阈值的比较，或者p 从m位接收信号的LSB侧的（m-k）比特中选择的比特（p＆nlE; m-k）。

10. 发明授权

US07505695B2 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：US07505695B2
公开(公告)日：2009-03-17
申请号：US10508321
申请日：2003-04-23
申请人： Takashi Sugihara , Hirofumi Totsuka , Takashi Mizuochi
发明人： Takashi Sugihara , Hirofumi Totsuka , Takashi Mizuochi
IPC分类号： H04B10/06
CPC分类号： H04B10/6971 , H04B10/675 , H04B10/6972
摘要： The present invention includes an optical band-limiting filter which imposes a band-limitation on an input optical signal, an opto-electric converter which converts the optical signal output from the optical band-limiting filter into an electric signal, a lowpass filter which imposes the band-limitation on the electric signal output from the opto-electric converter, an amplifier which amplifies the output signal of the lowpass filter, and an electric equalizer which performs an equalization processing on a waveform of the electric signal output from the opto-electric converter are provided, and a full width at half maximum of the optical band-limiting filter is set to be equivalent to or smaller than a bit rate frequency of the optical signal.
摘要翻译：本发明包括对输入光信号施加带限限制的光限幅滤波器，将从光限带滤波器输出的光信号转换为电信号的光电转换器，施加从光电转换器输出的电信号的频带限制，放大低通滤波器的输出信号的放大器和对从光电输出的电信号的波形进行均衡处理的电均衡器转换器，并且将光限幅滤波器的半值全宽设置为等于或小于光信号的比特率频率。

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