公开(公告)号：US07379671B2

公开(公告)日：2008-05-27

申请号：US10609366

申请日：2003-07-01

申请人： Kenkichi Shimomura ,  Takashi Sugihara ,  Takashi Mizuochi

发明人： Kenkichi Shimomura ,  Takashi Sugihara ,  Takashi Mizuochi

IPC分类号： H04J13/02 ,  H04B10/04 ,  G02F1/00 ,  G02F1/01 ,  H04B10/12

CPC分类号： H04B10/5051 ,  H04B10/505 ,  H04B10/5165 ,  H04B10/548

摘要： An optical modulation processing section is provided which, in turn, includes a signal carrier-suppressed pulse modulating unit that performs signal carrier-suppressed pulse modulation on a light source signal to thereby create a CS-RZ signal, a phase modulating unit that performs phase modulation on a data signal based on the CS-RZ signal to thereby convert the data signal to a phase-modulated signal, and an optical filtering unit that filters out redundant frequency components included in the phase modulation signal.

摘要翻译： 提供了一种光调制处理部，其进而包括对光源信号执行信号载波抑制脉冲调制从而产生CS-RZ信号的信号载波抑制脉冲调制单元，相位调制单元执行相位 基于CS-RZ信号对数据信号进行调制，从而将数据信号转换为相位调制信号;以及滤波单元，滤除包括在相位调制信号中的冗余频率分量。

公开(公告)号：US06970650B2

公开(公告)日：2005-11-29

申请号：US10477535

申请日：2003-02-26

申请人： Satoshi Kajiya ,  Kaoru Kinjo ,  Takashi Mizuochi

发明人： Satoshi Kajiya ,  Kaoru Kinjo ,  Takashi Mizuochi

IPC分类号： G02F1/35 ,  H01S3/10 ,  H01S3/30 ,  H04B10/00 ,  H04B10/2563 ,  H04J14/00 ,  H04J14/02

CPC分类号： H04B10/2971 ,  H04B10/2503 ,  H04B10/2916

摘要： In a one-fiber bidirectional optical transmission system in which output optical signals of optical transmitter-receivers respectively connected to the opposite ends of one optical fiber transmission line are bidirectionally transmitted in the optical fiber transmission line, which utilizes a Raman amplification effect by backward pumping, a frequency satisfying the conditions of |fs1−f0|≠|fp2−f0| and |fs2−f0|≠|fp1−f0| is selected, where f0 is a zero dispersion frequency of the optical fiber transmission line, fs1 and fs2 are the frequencies of the first signal and the second signal, respectively, and fp1 and fp2 are frequencies of the first Raman pump light and the second Raman pump light, respectively.

摘要翻译： 在单纤双向光传输系统中，其中分别连接到一根光纤传输线的相对端的光发射器 - 接收器的输出光信号在光纤传输线中双向传输，其利用通过反向泵浦的拉曼放大效应 满足以下条件的频率满足条件| f | ＆lt; f＆gt;＆lt;＆lt;＆lt;＆lt; /＆gt; 被选择，其中f 0是光纤传输线的零色散频率，f s1和f 2 s 2是第一个 信号和第二信号，f 1 p1和f 2 p 2分别是第一拉曼泵浦光和第二拉曼泵浦光的频率。

公开(公告)号：US6028695A

公开(公告)日：2000-02-22

申请号：US124993

申请日：1998-07-30

申请人： Aritomo Uemura ,  Takashi Mizuochi ,  Katsuhiro Shimizu ,  Kiwami Matsushita ,  Tadayoshi Kitayama ,  Masatoshi Suzuki ,  Hidenori Taga ,  Shu Yamamoto

发明人： Aritomo Uemura ,  Takashi Mizuochi ,  Katsuhiro Shimizu ,  Kiwami Matsushita ,  Tadayoshi Kitayama ,  Masatoshi Suzuki ,  Hidenori Taga ,  Shu Yamamoto

IPC分类号： G02F1/03 ,  H04B10/07 ,  H04B10/516 ,  H04B10/54 ,  H04B10/548 ,  H04B10/58 ,  H04B10/61 ,  G02F1/035 ,  G02F1/055

CPC分类号： G02F1/0327 ,  G02F2203/25

摘要： When an intensity modulating operation and a phase modulating operation are carried out by employing a 2-electrode MachZehnder type optical modulator preferably a LN-MZ type optical modulator, a drive signal of this 2-electrode LN-MZ type optical modulator is produced from an intensity modulation signal and a phase modulation signal with a low loss and a simple arrangement. A optical modulating apparatus includes a splitter/combiner structured to split an intensity modulation signal inputted into a first input terminal into a first electric signal having an in-phase relationship with that of the intensity modulation signal and second electric signal having an inverse phase relationship therewith, split a phase modulation signal inputted into a second input terminal into a third electric signal having an in-phase relationship with that of the phase modulation signal an also a fourth electric signal having an in-phase relationship therewith, combine the first electric signal with the fourth electric signal to thereby output a first combined signal, and combine the second electric signal with the third electric signal to thereby output a second combined signal; and an optical modulating means structured to split a light carrier wave entered from a light source into two light carrier waves, and to optically modulate the two sets of the split light carrier waves by using the first combined signal and the second combined signal derived from the splitter/combiner, and combine the two phase-modulated above said light carrier waves to output an optical modulation signal.

摘要翻译： 当通过使用优选为LN-MZ型光调制器的2电极MachZehnder型光学调制器进行强度调制操作和相位调制操作时，该2电极LN-MZ型光调制器的驱动信号由 强度调制信号和具有低损耗和简单布置的相位调制信号。 光调制装置包括：分离器/组合器，被构造成将输入到第一输入端的强度调制信号分成与强度调制信号的同相关系的第一电信号和与其相反的相位关系的第二电信号 将输入到第二输入端子的相位调制信号分别成为与相位调制信号同相的同步关系的第三电信号，以及与其同相关系的第四电信号，将第一电信号与 第四电信号，从而输出第一组合信号，并将第二电信号与第三电信号组合，从而输出第二组合信号; 以及光调制装置，被构造成将从光源进入的光载波分成两个光载波，并且通过使用从第二组合信号导出的第一组合信号和第二组合信号对两组分裂光载波进行光学调制 分离器/组合器，并且组合在所述轻载波上的两个相位调制以输出光调制信号。

公开(公告)号：US08805198B2

公开(公告)日：2014-08-12

申请号：US13202001

申请日：2009-04-13

申请人： Takashi Mizuochi

发明人： Takashi Mizuochi

IPC分类号： H04B10/00 ,  H04B10/04 ,  H04B10/12 ,  H04B10/06

CPC分类号： H04L27/2096 ,  H04B10/5561 ,  H04B10/677

摘要： An optical transmission and reception system in which a plurality of tributary signals are converted into multilevel modulated light for transmission and reception. An apparatus for transmitting multilevel modulated light includes: FECs which perform error correction processing including addition of a tributary identifier; and a GEAR BOX which performs rate conversion on the processed signals. An apparatus for receiving multilevel modulated light includes: a 20G DQPSK REC which separates received multilevel modulated light into received tributary signals and outputs the signals to respective output systems; the GEAR BOX which performs rate conversion on the received tributary signals; the FECs which extract tributary identifiers from the received tributary signals; a TIM which compares tributary identifiers defined for the respective output systems in advance with the tributary identifies extracted; and a tributary selector which gives an instruction to change correspondence between the received tributary signals and the output systems if the result of comparison is a mismatch.

摘要翻译： 一种光发送和接收系统，其中多个支路信号被转换成用于发送和接收的多电平调制光。 用于发送多级调制光的装置包括：执行纠错处理的FEC，包括添加支路标识符; 以及对所处理的信号执行速率转换的GEAR BOX。 一种用于接收多电平调制光的装置，包括：20G DQPSK REC，其将接收的多电平调制光分离成接收的支路信号，并将该信号输出到相应的输出系统; 对接收到的支路信号执行速率转换的GEAR BOX; 从所接收的支路信号中提取支路标识符的FEC; 将对于各个输出系统预先定义的辅助标识符与提取的支流标识进行比较的TIM; 以及如果比较结果是不匹配，则给出改变所接收的支路信号与输出系统之间的对应关系的指令。

公开(公告)号：US20070162831A1

公开(公告)日：2007-07-12

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.

公开(公告)号：US20070104225A1

公开(公告)日：2007-05-10

申请号：US11278274

申请日：2006-03-31

申请人： Takashi Mizuochi ,  Naoki Suzuki ,  Seiji Kozaki

发明人： Takashi Mizuochi ,  Naoki Suzuki ,  Seiji Kozaki

IPC分类号： H04J3/00

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。

公开(公告)号：US07158728B2

公开(公告)日：2007-01-02

申请号：US10191319

申请日：2002-07-10

申请人： Yasunori Kasahara ,  Hideki Goto ,  Takashi Mizuochi ,  Kenkichi Shimomura ,  Yukio Horiuchi ,  Masatoshi Suzuki ,  Daishi Ishii ,  Toshio Kawazawa

发明人： Yasunori Kasahara ,  Hideki Goto ,  Takashi Mizuochi ,  Kenkichi Shimomura ,  Yukio Horiuchi ,  Masatoshi Suzuki ,  Daishi Ishii ,  Toshio Kawazawa

IPC分类号： H04B10/02

CPC分类号： H04B10/2918 ,  H04B10/0777 ,  H04B2210/074

摘要： An optical repeating system includes an optical transmitter and a plurality of optical amplifying repeaters. The optical transmitter specifies a part or all of the optical amplifying repeaters, and transmits a supervisory command to the specified optical amplifying repeaters as a first sub-signal via an uplink or downlink optical transmission line. The supervisory command is a command to supervise internal circuits of the optical amplifying repeaters. Receiving the supervisory command addressed thereto via the uplink or downlink optical transmission line, the optical amplifying repeaters each transmit a supervisory signal indicating a supervisory result corresponding to the supervisory command to optical receivers via the uplink and downlink optical transmission lines as a second sub-signal. The optical system can reduce the time take to acquire the supervisory information about the plurality of the optical amplifying repeaters.

摘要翻译： 光学重复系统包括光发射机和多个光放大中继器。 光发射机规定了一部分或全部光放大中继器，并经由上行或下行光传输线路将指示的光放大中继器的监控命令作为第一子信号发送。 监控命令是监控光放大中继器内部电路的命令。 通过上行链路或下行链路光传输线路接收到该监控命令，光放大中继器将经过上行和下行光传输线路的指示对应于监控命令的监控结果的监控信号发送给光接收机作为第二子信号 。 光学系统可以减少获取关于多个光学放大转发器的监控信息的时间。

公开(公告)号：US07110681B1

公开(公告)日：2006-09-19

申请号：US10129971

申请日：2000-10-13

申请人： Takashi Mizuochi

发明人： Takashi Mizuochi

IPC分类号： H04B10/04

CPC分类号： H04L25/4917 ,  H04B10/505 ,  H04B10/5055 ,  H04B10/508 ,  H04B10/5162 ,  H04B10/541 ,  H04B10/6932 ,  H04L25/06

摘要： Binary information is subjected to RZ encoding and multi-level encoding, and the encoded signal is optically modulated.

摘要翻译： 对二进制信息进行RZ编码和多级编码，并对编码信号进行光学调制。

公开(公告)号：US06826325B2

公开(公告)日：2004-11-30

申请号：US10190725

申请日：2002-07-09

申请人： Seiichiro Tabata ,  Takashi Mizuochi

发明人： Seiichiro Tabata ,  Takashi Mizuochi

IPC分类号： G02B626

CPC分类号： G02B6/3502 ,  G02B6/3546 ,  G02B6/3578

摘要： An optical signal switching unit causing no instantaneous cutoff in switching without a latency time. The optical signal switching unit has input waveguides and output waveguides, optical switches for switching the course of each optical signal, located at intersections between the waveguides and outputting the optical signal to the output waveguides. This optical signal switching unit includes optical switches and a switch state control part controlling the states of the optical switches, thereby controlling formation of the output optical signal. The optical switches take binary states including a first route state providing the optical signal with a first course and a second course state providing the optical signal with a second course, and an intermediate state including part of both of the first and second course states.

摘要翻译： 光信号切换单元在没有延迟时间的情况下不进行切换的瞬时切断。 光信号切换单元具有输入波导和输出波导，用于切换位于波导之间的交叉处的每个光信号的路线的光开关，并将光信号输出到输出波导。 该光信号切换单元包括光开关和控制光开关状态的开关状态控制部，由此控制输出光信号的形成。 光开关采取二进制状态，包括提供具有第一进程的光信号的第一路由状态和向第一进程提供光信号的第二进程状态，以及包括第一和第二进程状态两者的一部分的中间状态。

公开(公告)号：US06801720B1

公开(公告)日：2004-10-05

申请号：US09559644

申请日：2000-04-28

申请人： Takashi Mizuochi ,  Yojiro Osaki ,  Aritomo Uemura ,  Hiroshi Ichibangase ,  Kiwami Matsushita ,  Tadayoshi Kitayama ,  Shu Yamamoto ,  Tetsuya Miyazaki ,  Takatomi Kabashima ,  Naoki Kobayashi

发明人： Takashi Mizuochi ,  Yojiro Osaki ,  Aritomo Uemura ,  Hiroshi Ichibangase ,  Kiwami Matsushita ,  Tadayoshi Kitayama ,  Shu Yamamoto ,  Tetsuya Miyazaki ,  Takatomi Kabashima ,  Naoki Kobayashi

IPC分类号： H04B1016

CPC分类号： H04L1/20 ,  H04B10/0775 ,  H04B2210/071 ,  H04B2210/072 ,  H04B2210/078 ,  H04J3/14 ,  H04J14/02 ,  H04J14/0227 ,  H04J14/0245 ,  H04J14/0249 ,  H04J14/0283 ,  H04J2203/0057

摘要： The present invention has an object to obtain an optical signal quality supervisory device that supervises the quality of an optical signal simply, efficiently and with high accuracy without inviting an increase in cost, an increase in circuit scale and increase in power consumption. The bit rate of the optical supervisory channel is made lower than the bit rate of the optical main channel that is transmitted over an optical communication system, but the reception electric band width of a receiver that receives the optical supervisory channel is made equal to or wider than the reception electric band width of a receiver that receives the optical main channel. Also, the optical supervisory channel is made up of an SOH (section over head) frame to detect an error of the BIP (bit interleaved parity) byte of SOH, thereby supervising the quality of the optical communication system, in particular, the light wave network.

摘要翻译： 本发明的目的是获得一种光信号质量监控装置，其能够简单，有效且高精度地监视光信号的质量，而不会增加成本，增加电路规模和增加功耗。 使光监视信道的比特率低于通过光通信系统发送的光主干的比特率，但接收光监控信道的接收机的接收电带宽度等于或大于 比接收光学主通道的接收机的接收电带宽度大。 此外，光监控信道由SOH（部分头）帧构成，以检测SOH的BIP（比特交织奇偶校验）字节的错误，从而监督光通信系统的质量，特别是光波 网络。