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31. 发明授权

US5455704A Optical-fiber light amplifier 失效
标题翻译：光纤光放大器
公开(公告)号：US5455704A
公开(公告)日：1995-10-03
申请号：US111378
申请日：1993-08-24
申请人： Takashi Mizuochi , Tadayoshi Kitayama , Katsuhiro Shimizu , Kiwami Matsushita , Nobuyuki Takemura , Eiichi Nakagawa
发明人： Takashi Mizuochi , Tadayoshi Kitayama , Katsuhiro Shimizu , Kiwami Matsushita , Nobuyuki Takemura , Eiichi Nakagawa
IPC分类号： H01S3/094 , H01S3/13 , H01S3/131 , H04B10/152 , H04B10/17 , H04B10/12 , H04B10/00
CPC分类号： H04B10/2912 , H01S3/094003 , H01S3/1301 , H04B10/291 , H04B10/2931 , H04B10/2935 , H01S3/06754 , H01S3/09408 , H04B2210/003
摘要： An optical-fiber light amplifier using rare-earth-doped optical fibers. The light amplifier combines first and second excitation light from first and second sources to form combined excitation light and divides the combined excitation light for inverted distribution to both two optical fibers. The light entered one optical fiber and that entered the other optical fiber are polarized so as to be perpendicular to each other so that fluctuation of output level is prevented without mutual interference. Alternatively the first excitation light and the second excitation light may have different wavelengths; also in this case, fluctuation of level is prevented without any interference.
摘要翻译：一种使用稀土掺杂光纤的光纤光放大器。光放大器组合来自第一和第二源的第一和第二激发光以形成组合的激发光，并将用于反向分配的组合的激发光分成两个光纤。光进入一根光纤，并且进入另一根光纤被极化以便彼此垂直，从而在没有相互干扰的情况下防止输出电平的波动。或者，第一激发光和第二激发光可以具有不同的波长; 在这种情况下，也可以防止水平的波动而不受干扰。

32. 发明授权

US09081677B2 Method and device for estimating input bit error ratio 有权
标题翻译：用于估计输入误码率的方法和装置
公开(公告)号：US09081677B2
公开(公告)日：2015-07-14
申请号：US13982403
申请日：2012-02-20
申请人： Yoshikuni Miyata , Kenya Sugihara , Kiyoshi Onohara , Kazuo Kubo , Hideo Yoshida , Takashi Mizuochi
发明人： Yoshikuni Miyata , Kenya Sugihara , Kiyoshi Onohara , Kazuo Kubo , Hideo Yoshida , Takashi Mizuochi
IPC分类号： G06F11/07 , H04L1/20
CPC分类号： G06F11/076 , H04L1/203
摘要： An input bit error ratio estimating method executed by a communication control unit includes a computing, a condition determining, a first input BER estimating, a second input BER estimating, a third input BER estimating, and an input BER estimation result outputting. In the condition determining, the communication control unit determines which of a plurality of conditions set in advance to be narrowed down to one has been established, based on a post-internal decoding residual error detection ratio. Based on the condition that is determined in the condition determining as one that has been established, the communication control unit selects one out of a plurality of processing procedures for estimating the input BER, namely, selects one of the first input BER estimating to the third input BER estimating and executes the selected processing.
摘要翻译：由通信控制单元执行的输入误码率估计方法包括计算，条件确定，第一输入BER估计，第二输入BER估计，第三输入BER估计和输入BER估计结果输出。在所述条件判定中，所述通信控制部基于所述内部解码剩余错误检测率，确定预先设定为被缩小为一个的条件中的哪一个已被建立。基于在确定为已经建立的条件中确定的条件，通信控制单元从用于估计输入BER的多个处理过程中选择一个，即，选择第三输入BER中的一个，输入BER估计并执行所选择的处理。

33. 发明授权

US08621316B2 Method and device for encoding of error correcting codes, and method and device for decoding of error correcting codes 有权
标题翻译：用于纠错码编码的方法和装置，以及用于解码纠错码的方法和装置
公开(公告)号：US08621316B2
公开(公告)日：2013-12-31
申请号：US12987368
申请日：2011-01-10
申请人： Yoshikuni Miyata , Hideo Yoshida , Kazuo Kubo , Takashi Mizuochi
发明人： Yoshikuni Miyata , Hideo Yoshida , Kazuo Kubo , Takashi Mizuochi
IPC分类号： G06F11/00 , H03M13/00
CPC分类号： H04L1/0071 , H03M13/1102 , H03M13/1515 , H03M13/152 , H03M13/23 , H03M13/271 , H03M13/29 , H03M13/2945 , H03M13/2957 , H03M13/2963 , H03M13/356 , H03M13/6561 , H03M13/6577 , H04L1/0065
摘要： An error correction encoding device includes an outer encoding circuit that performs encoding processing for an outer code and an inner encoding circuit that performs encoding processing for an inner code. The inner encoding circuit includes an inner-encoding input circuit that performs interleaving processing in which a parallel input sequence is divided into lanes and in which a barrel shift is performed for each inner frame in the lanes. Thus, allocation ratios between an information sequence area and a parity sequence area are made uniform.
摘要翻译：纠错编码装置包括对外部码进行编码处理的外部编码电路和对内部码进行编码处理的内部编码电路。内部编码电路包括内部编码输入电路，其执行交织处理，其中并行输入序列被划分为通道，并且其中对车道中的每个内部框架执行桶形移位。因此，使信息序列区域和奇偶序列区域之间的分配比率一致。

34. 发明授权

US08478089B2 Optical switch and optical-switch control method 失效
标题翻译：光开关和光开关控制方式
公开(公告)号：US08478089B2
公开(公告)日：2013-07-02
申请号：US13040840
申请日：2011-03-04
申请人： Yuji Akiyama , Takashi Mizuochi
发明人： Yuji Akiyama , Takashi Mizuochi
IPC分类号： G02B6/26 , G02B6/42
CPC分类号： H04Q11/0005 , H04Q2011/0039 , H04Q2011/0049 , H04Q2011/0052
摘要： An optical switch according to the present invention includes a multiple-stage optical-switch unit that includes one input port and a plurality of output ports that are configured by connecting multiple stages of optical switching elements each of which includes three or more optical input-output ports; and a switching control circuit that, when receiving a switching instruction to switch an output destination of light input from the input port, executes at first a first control that changes setting of an optical switching element that is included in part not overlapping with an optical transmission channel reaching an optical output port before switching in an optical transmission channel reaching an optical output port after switching and is positioned at a point other than a branch point from an overlapping part, and then executes a second control that changes setting of an optical switching element that is positioned at the branch point.
摘要翻译：根据本发明的光开关包括多级光开关单元，其包括一个输入端口和多个输出端口，所述多个输出端口通过连接多级光开关元件而构成，每个光开关元件包括三个或更多个光输入 - 输出港口以及切换控制电路，当接收到切换从输入端口输入的光的输出目的地的切换指令时，首先执行改变与光传输不重叠的部分中包括的光开关元件的设置的第一控制在切换之后切换到达到光输出端口的光传输通道之前，通道到达光输出端口，并且位于不同于重叠部分的分支点之外的点，然后执行改变光开关元件的设置的第二控制位于分支点。

35. 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。

36. 发明申请

US20110158648A1 OPTICAL NETWORK SYSTEM, OPTICAL REDUNDANT SWITCHING APPARATUS, AND WDM APPARATUS 有权
标题翻译：光网络系统，光冗余切换设备和WDM设备
公开(公告)号：US20110158648A1
公开(公告)日：2011-06-30
申请号：US13060332
申请日：2008-10-15
申请人： Kazuo Kubo , Takashi Mizuochi , Yuji Akiyama
发明人： Kazuo Kubo , Takashi Mizuochi , Yuji Akiyama
IPC分类号： H04J14/02
CPC分类号： H04J3/1652 , H04B1/74 , H04J3/14 , H04J14/0295 , H04J14/0297
摘要： An optical network system includes a first node that converts input signals of n systems into optical signals having wavelengths different for each of the systems and wavelength-multiplexes and transmits the optical signals and a second node that selects signals of n systems from the wavelength-multiplexed signals and outputs the signals. The first node includes an optical coupler that divides the input signals into operating system signals and redundant signals, TPNDs that convert the operating systems into optical signals, an optical switch that selects standby system signals from the redundant signals, and a TPND that converts the standby system signals into optical signals in a storage mode corresponding to a type of the standby system signals. The second node includes TPNDs that convert the optical signals converted from the operating system signals into signals of a type corresponding to the input signals, a TPND that converts the optical signals of the standby system signals into signals of the type of the input signals in a storage mode corresponding to the standby system signals, and an optical switch that selects an output destination of the signals output from the TPND.
摘要翻译：光网络系统包括将n个系统的输入信号转换成具有对于每个系统和波长复用的波长不同的波长的第一节点，并且发送光信号，以及从波长多路复用器件中选择n个系统的信号的第二节点信号并输出信号。第一个节点包括将输入信号分为操作系统信号和冗余信号的光耦合器，将操作系统转换为光信号的TPND，从冗余信号中选择待机系统信号的光开关，以及转换待机状态的TPND 系统以对应于备用系统信号的类型的存储模式将信号转换成光信号。第二节点包括将从操作系统信号转换的光信号转换为与输入信号相对应的类型的信号的TPND，将待机系统信号的光信号转换为输入信号类型的信号的TPND 对应于备用系统信号的存储模式，以及选择从TPND输出的信号的输出目的地的光开关。

37. 发明授权

US07917833B2 Communication apparatus, transmitter, receiver, and error correction optical communication system 有权
标题翻译：通信设备，发射机，接收机和纠错光通信系统
公开(公告)号：US07917833B2
公开(公告)日：2011-03-29
申请号：US11682753
申请日：2007-03-06
申请人： Takashi Mizuochi , Naoki Suzuki , Seiji Kozaki
发明人： Takashi Mizuochi , Naoki Suzuki , Seiji Kozaki
IPC分类号： H03M13/00
CPC分类号： H04L1/0041 , H03M13/1515 , H03M13/17 , H03M13/2707 , H04L1/0071
摘要： A communication apparatus includes a transmitter and a receiver, wherein the transmitter further includes: an interleaver that rearranges positions of bits of an information frame; an FEC encoder that performs an error correction encoding to the information frame whose bit positions have been rearranged; and a selector that inserts FEC parity into predetermined positions of the information frame, to thereby generate a transmission signal, whereas the receiver includes: a selector that extracts an information frame part and an FEC parity part from a reception signal; an interleaver that rearranges positions of the bits of the information frame part using the same rule as that used at that transmitter side; an FEC decoder that corrects an error of bits rearranged based on the error correction parity part; and a de-interleaver that reproduces an information frame by returning positions of error-corrected bits to original bit positions.
摘要翻译：通信装置包括发射机和接收机，其中所述发射机还包括：交织器，其重新排列信息帧的比特位置; FEC编码器，其对位位置重新排列的信息帧执行纠错编码; 以及选择器，其将FEC奇偶校验插入信息帧的预定位置，从而生成发送信号，而接收机包括：从接收信号中提取信息帧部分和FEC奇偶校验部分的选择器; 使用与在该发送机侧使用的规则相同的规则来重新排列信息帧部分的位的位置的交织器; FEC解码器，其基于纠错奇偶校验部分校正重新排列的比特的错误; 以及通过将错误校正的比特的位置返回到原始比特位置来再现信息帧的去交织器。

38. 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。

39. 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）。

40. 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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