公开(公告)号：US20090092401A1

公开(公告)日：2009-04-09

申请号：US12222574

申请日：2008-08-12

申请人： Kenro Sekine ,  Nobuhiko Kikuchi ,  Shinya Sasaki

发明人： Kenro Sekine ,  Nobuhiko Kikuchi ,  Shinya Sasaki

IPC分类号： H04B10/12 ,  H04B10/04

CPC分类号： G02F1/0123 ,  G02F1/2255 ,  G02F2001/212 ,  H04B10/5053 ,  H04B10/50577 ,  H04B10/50595 ,  H04L27/2071 ,  H04L27/2096

摘要： In a quaternary phase modulator including two phase modulators disposed in parallel and a phase adjuster that adjusts a phase difference when the outputs of the two phase modulators are combined, there are provided a second light source that introduces light propagated in a backward direction, a first controller that controls the bias of the two phase modulators so that the intensity of the backward light is a minimum on the input side of the quaternary phase modulator, and a second controller that controls the bias of the phase adjuster so that a result monitored by a photodiode having a bandwidth not exceeding the bit rate on the output side of the quaternary phase modulator is a minimum, the first controller being implemented after the second controller is implemented.

摘要翻译： 在包括并联设置的两个相位调制器和在两个相位调制器的输出被组合时调节相位差的相位调节器的四元相位调制器中，提供了一种引入沿后向传播的光的第二光源，第一 控制器，其控制两个相位调制器的偏置，使得反向光的强度在四元相位调制器的输入侧是最小的;以及第二控制器，其控制相位调节器的偏置，使得由a 具有不超过四元相位调制器的输出侧的比特率的带宽的光电二极管是最小的，第一控制器在实现第二控制器之后被实现。

公开(公告)号：US20050226621A1

公开(公告)日：2005-10-13

申请号：US10913432

申请日：2004-08-09

申请人： Nobuhiko Kikuchi ,  Kenro Sekine ,  Shinya Sasaki

发明人： Nobuhiko Kikuchi ,  Kenro Sekine ,  Shinya Sasaki

IPC分类号： H04J14/00 ,  G02B6/00 ,  H04B10/27 ,  H04B10/29 ,  H04B10/291 ,  H04J14/02

CPC分类号： H04J14/021 ,  H04J14/0212 ,  H04J14/0221 ,  H04J14/0227

摘要： It was difficult to detect a wavelength error. Further, a wavelength error of an optical add signal is accompanied by a calculation error of the number of wavelengths of a wavelength division multiplexing signal, which causes a set value of an optical signal level to become abnormal, resulting in the degradation of the optical signal. According to the present invention, part of an inputted optical add signal 118 is reflected by a mirror 117, and is thereby inputted into an optical wavelength multiplexer 105 in the reverse direction so that the optical add signal is returned to paths 115-1 through 115-16 corresponding to wavelengths λ1 through λ16. If the returned optical add signal is an optical add signal having a correct wavelength (in FIG. 1, λ16), the optical signal enters its corresponding backward direction optical detector 113-16. Accordingly, it is possible to check whether or not a wavelength of the optical add signal is correct.

摘要翻译： 很难检测出波长误差。 此外，光添加信号的波长误差伴随着波分复用信号的波长数的计算误差，导致光信号电平的设定值变得异常，导致光信号的劣化 。 根据本发明，输入的光学加法信号118的一部分由反射镜117反射，从而以相反的方向输入到光学波长多路复用器105中，使得光学加法信号返回到路径115-1到115 16对应于波长λ1到λ16。 如果返回的光学加法信号是具有正确波长的光学加法信号（在图1中，λ16），则光信号进入其对应的反向光学检测器113-16。 因此，可以检查光学加法信号的波长是否正确。

公开(公告)号：US20050175041A1

公开(公告)日：2005-08-11

申请号：US10888016

申请日：2004-07-12

申请人： Shinya Sasaki ,  Nobuhiko Kikuchi ,  Kenro Sekine

发明人： Shinya Sasaki ,  Nobuhiko Kikuchi ,  Kenro Sekine

IPC分类号： H04B10/00 ,  H04B10/27 ,  H04B10/29 ,  H04J14/00 ,  H04J14/02

CPC分类号： H04J14/0216 ,  H04J14/0212 ,  H04J14/0217

摘要： A problem to be solved in an optical communication system for carrying out bidirectional transmission between communication nodes by wavelength-division-multiplexed optical signals is that a plurality of optical add-drop multiplexers installed in the communication nodes are required for each transmission direction, and therefore, the communication cost is increased. An optical circulator or an optical coupler is arranged at an input/output port of the optical add-drop multiplexer and the wavelength-division-multiplexed optical signals are assembled for each transmission direction, whereby optical signals transmitted bidirectionally can be handled by one optical add-drop multiplexer.

摘要翻译： 用于通过波分复用光信号在通信节点之间进行双向传输的光通信系统中要解决的问题在于，每个传输方向都需要安装在通信节点中的多个光分插复用器，因此 通信成本增加。 在光分插复用器的输入/输出端口处设置光环行器或光耦合器，并且为每个传输方向组合波分复用光信号，由此双向传输的光信号可以通过一个光学加法 - 多路复用器

公开(公告)号：US08095018B2

公开(公告)日：2012-01-10

申请号：US12222574

申请日：2008-08-12

申请人： Kenro Sekine ,  Nobuhiko Kikuchi ,  Shinya Sasaki

发明人： Kenro Sekine ,  Nobuhiko Kikuchi ,  Shinya Sasaki

IPC分类号： H04B10/00 ,  H04B10/04 ,  H04J14/00

CPC分类号： G02F1/0123 ,  G02F1/2255 ,  G02F2001/212 ,  H04B10/5053 ,  H04B10/50577 ,  H04B10/50595 ,  H04L27/2071 ,  H04L27/2096

摘要： In a quaternary phase modulator including two phase modulators disposed in parallel and a phase adjuster that adjusts a phase difference when the outputs of the two phase modulators are combined, there are provided a second light source that introduces light propagated in a backward direction, a first controller that controls the bias of the two phase modulators so that the intensity of the backward light is a minimum on the input side of the quaternary phase modulator, and a second controller that controls the bias of the phase adjuster so that a result monitored by a photodiode having a bandwidth not exceeding the bit rate on the output side of the quaternary phase modulator is a minimum, the first controller being implemented after the second controller is implemented.

摘要翻译： 在包括并联设置的两个相位调制器和在两个相位调制器的输出被组合时调节相位差的相位调节器的四元相位调制器中，提供了一种引入沿后向传播的光的第二光源，第一 控制器，其控制两个相位调制器的偏置，使得反向光的强度在四元相位调制器的输入侧是最小的;以及第二控制器，其控制相位调节器的偏置，使得由a 具有不超过四元相位调制器的输出侧的比特率的带宽的光电二极管是最小的，第一控制器在第二控制器被实现之后被实现。

公开(公告)号：US07903975B2

公开(公告)日：2011-03-08

申请号：US10888016

申请日：2004-07-12

申请人： Shinya Sasaki ,  Nobuhiko Kikuchi ,  Kenro Sekine

发明人： Shinya Sasaki ,  Nobuhiko Kikuchi ,  Kenro Sekine

IPC分类号： H04J14/02

CPC分类号： H04J14/0216 ,  H04J14/0212 ,  H04J14/0217

摘要： A problem to be solved in an optical communication system for carrying out bidirectional transmission between communication nodes by wavelength-division-multiplexed optical signals is that a plurality of optical add-drop multiplexers installed in the communication nodes are required for each transmission direction, and therefore, the communication cost is increased. An optical circulator or an optical coupler is arranged at an input/output port of the optical add-drop multiplexer and the wavelength-division-multiplexed optical signals are assembled for each transmission direction, whereby optical signals transmitted bidirectionally can be handled by one optical add-drop multiplexer.

摘要翻译： 用于通过波分复用光信号在通信节点之间进行双向传输的光通信系统中要解决的问题在于，每个传输方向都需要安装在通信节点中的多个光分插复用器，因此 通信成本增加。 在光分插复用器的输入/输出端口处设置光环行器或光耦合器，并且为每个传输方向组合波分复用光信号，由此双向传输的光信号可以通过一个光学加法 - 多路复用器

公开(公告)号：US07653311B2

公开(公告)日：2010-01-26

申请号：US10913432

申请日：2004-08-09

申请人： Nobuhiko Kikuchi ,  Kenro Sekine ,  Shinya Sasaki

发明人： Nobuhiko Kikuchi ,  Kenro Sekine ,  Shinya Sasaki

IPC分类号： H04J14/02

CPC分类号： H04J14/021 ,  H04J14/0212 ,  H04J14/0221 ,  H04J14/0227

摘要： Part of an inputted optical add signal 118 is reflected by a mirror 117, and is thereby inputted into an optical wavelength multiplexer 105 in the reverse direction so that the optical add signal is returned to paths 115-1 through 115-16 corresponding to wavelengths λ1 through λ16. If the returned optical add signal is an optical add signal having a correct wavelength, the optical signal enters its corresponding backward direction optical detector 113-16. Accordingly, it is possible to check whether or not a wavelength of the optical add signal is correct.

摘要翻译： 输入的光学加法信号118的一部分由反射镜117反射，从而以相反方向输入到光学波长多路复用器105中，使得光学加法信号返回到对应于波长λ1的路径115-1至115-16 通过lambda16。 如果返回的光学加法信号是具有正确波长的光学加法信号，则光信号进入其对应的反向光学检测器113-16。 因此，可以检查光学加法信号的波长是否正确。

公开(公告)号：US08090269B2

公开(公告)日：2012-01-03

申请号：US12007846

申请日：2008-01-16

申请人： Hidehiro Toyoda ,  Kenro Sekine ,  Shinya Sasaki ,  Shinji Nishimura

发明人： Hidehiro Toyoda ,  Kenro Sekine ,  Shinya Sasaki ,  Shinji Nishimura

IPC分类号： H04B10/04

CPC分类号： H04B10/5561 ,  H04B10/5055 ,  H04B10/677

摘要： A data transmission system comprising a transmitter and a receiver. The transmitter comprises a phase encoder for partitioning consecutive bit data to be input in data in units of X bits; and converting a 2x value indicated by the data of X bits in unique association with an (N/2−1)Y value of a Y symbol, and for confining use of signal points, from among the signal points of N-ary phase, only to a signal point P1 (at a phase angle 0) and N/2−2 signal points P(2n+2) (where 1≦n

摘要翻译： 一种包括发射机和接收机的数据传输系统。 发射机包括相位编码器，用于分割以X位为单位输入数据的连续位数据; 并且将由X位的数据指示的2x值与Y符号的（N / 2-1）Y值唯一相关联，并且为了限制使用信号点，从N阶相位的信号点中， 只有信号点P1（相位角0）和N / 2-2信号点P（2n + 2）（其中1＆nlE; n

公开(公告)号：US20080240729A1

公开(公告)日：2008-10-02

申请号：US12007846

申请日：2008-01-16

申请人： Hidehiro Toyoda ,  Kenro Sekine ,  Shinya Sasaki ,  Shinji Nishimura

发明人： Hidehiro Toyoda ,  Kenro Sekine ,  Shinya Sasaki ,  Shinji Nishimura

IPC分类号： H04B10/00

CPC分类号： H04B10/5561 ,  H04B10/5055 ,  H04B10/677

摘要： A data transmission system comprising a transmitter and a receiver. The transmitter comprises a phase encoder for partitioning consecutive bit data to be input in data in units of X bits; and converting a 2x value indicated by the data of X bits in unique association with an (N/2-1)Y value of a Y symbol, and for confining use of signal points, from among the signal points of N-ary phase, only to a signal point P1 (at a phase angle 0) and N/2-2 signal points P(2n+2) (where 1≦n

摘要翻译： 一种数据传输系统，包括发射机和接收机。 发射机包括相位编码器，用于分割以X位为单位输入数据的连续位数据; 并且将由X位的数据指示的2×SUP值转换为与Y符号的（N / 2-1）“Y”值唯一关联，并限制使用 的信号点从N相相位的信号点仅到信号点P 1（相位角0）和N / 2-2信号点P（2n + 2）（其中1 <= n < N / 2-2）。 接收机包括相位解码器，用于当接收到不同于允许使用的信号点的信号点时通知错误检测，并且通过将信号点改变为具有较小汉明距离的信号点来进行纠错。

公开(公告)号：US08417126B2

公开(公告)日：2013-04-09

申请号：US12985455

申请日：2011-01-06

申请人： Kohei Mandai ,  Nobuhiko Kikuchi ,  Shinya Sasaki

发明人： Kohei Mandai ,  Nobuhiko Kikuchi ,  Shinya Sasaki

IPC分类号： H04B10/04

CPC分类号： H04J14/06

摘要： A polarization multiplexing transmitter which generates polarization-multiplexed signals which are arbitrarily polarization-scrambled at high speed, without adding a polarization modulator and a polarization scrambler. In the transmitter, an orthogonally polarized signal generator includes two optical modulators which modulate the electric fields of optical signals and generate two optical signals with mutually orthogonal polarized waves. The transmitter includes electric field mappers which convert two data strings into electric field signals, polarization mappers which give different polarized waves to the two signals, polarization rotators which rotate the polarized waves of the signals uniformly, a polarization multiplexer which multiplexes the two polarization-rotated signals, a polarization demultiplexer which demultiplexes the multiplexed signal into polarized wave components of optical signals generated by the orthogonally polarized signal generator, and a driver. The optical modulators are driven to make the two demultiplexed electric field signals consistent with the electric fields of optical signals modulated by the modulators.

摘要翻译： 一种偏振复用发送器，其生成以高速任意偏振加扰的偏振复用信号，而不添加偏振调制器和偏振加扰器。 在发射机中，正交极化信号发生器包括调制光信号的电场并产生具有相互正交的极化波的两个光信号的两个光调制器。 发射机包括将两个数据串转换为电场信号的电场映射器，向两个信号提供不同极化波的偏振映射器，使信号的偏振波均匀旋转的偏振旋转器，多路复用两个偏振旋转 信号，将多路复用信号解复用为由正交偏振信号发生器产生的光信号的偏振波分量的偏振解复用器和驱动器。 驱动光调制器以使两个解复用的电场信号与由调制器调制的光信号的电场一致。

公开(公告)号：US5880876A

公开(公告)日：1999-03-09

申请号：US733185

申请日：1996-10-17

申请人： Nobuhiko Kikuchi ,  Shinya Sasaki

发明人： Nobuhiko Kikuchi ,  Shinya Sasaki

IPC分类号： H04B10/2507 ,  H04B10/07 ,  H04B10/2525 ,  H04B10/255 ,  H04B10/2563 ,  H04B10/54 ,  H04B10/58 ,  H04B10/12 ,  G02B6/10 ,  H04B10/18

CPC分类号： H04B10/2519 ,  H04B10/25253 ,  H04B10/255

摘要： An optical transmission system in which influences of worsening of the waveform by SPM are cancelled by setting an amount of compensation of a dispersion compensator at about 50% of a total amount of dispersion of an optical fiber transmission line so that received waveform is almost not varied, even if light intensity is varied. In the case where a plurality of dispersion compensators are used, the number of compensators is optimized by setting arrangement interval in the neighborhood of a receiving end at a small value. Further, in a transmission line, in which amounts of dispersion of optical fibers have positive and negative fluctuations, the smallest transmission distance of a transmission system is increased by effecting dispersion compensation so that an expected value of the total amount of dispersion of the transmission line is abnormal dispersion.

摘要翻译： 通过将色散补偿器的补偿量设置在光纤传输线的总色散的约50％以使接收波形几乎不变的光传输系统，其中SPM波形恶化的影响被消除 即使光强变化也是如此。 在使用多个色散补偿器的情况下，通过将接收端附近的布置间隔设定为较小的值来优化补偿器的数量。 此外，在其中光纤的色散量具有正和负波动的传输线中，通过进行色散补偿来增加传输系统的最小传输距离，使得传输线的总色散量的期望值 是异常分散。