公开(公告)号：US20080232815A1

公开(公告)日：2008-09-25

申请号：US11916612

申请日：2006-06-28

申请人： Satomi Shioiri ,  Toshiharu Itou ,  Kiyoshi Fukuchi ,  Hitoshi Takeshita

发明人： Satomi Shioiri ,  Toshiharu Itou ,  Kiyoshi Fukuchi ,  Hitoshi Takeshita

IPC分类号： H04B10/04 ,  H04B10/00

CPC分类号： H04J14/08 ,  H04B10/5561 ,  H04B10/66 ,  H04J14/02

摘要： In the optical communication device and the optical communication system using DPSK modulation whose cost is low, whose size is small and whose power consumption is low, the N:1 multiplexer 125 generates a serial signal by multiplexing a parallel signal coded by the DPSK modulation coding units 115˜117 bit by bit on a time division basis. The electric-phase modulation optical converter 127 converts a serial signal into a phase modulation light. The N-bit delay interferometer 132 executes DPSK decoding with respect to a phase modulation light by comparison with an N-bit preceding optical signal. The optical-electric signal converter 134 converts a decoded intensity modulation light into an electric signal. The N:1 demultiplexer 136 divides an electric signal converted by the optical-electric signal converter 134 into a number N of signals bit by bit on a time division basis.

摘要翻译： 在光通信设备和使用成本低，尺寸小并且功耗低的DPSK调制的光通信系统中，N：1多路复用器125通过多路复用由DPSK调制编码编码的并行信号来生成串行信号 单位115〜117，按时间划分。 电相调制光转换器127将串行信号转换为相位调制光。 N位延迟干涉仪132通过与N位在前的光信号进行比较来执行相对于相位调制光的DPSK解码。 光电信号转换器134将解码的强度调制光转换成电信号。 N：1解复用器136将由光电信号转换器134转换的电信号分时分割为数字N个信号。

公开(公告)号：US06538779B1

公开(公告)日：2003-03-25

申请号：US09332930

申请日：1999-06-14

申请人： Hitoshi Takeshita ,  Hirofumi Shimomura ,  Tatsuya Shiragaki ,  Naoya Henmi

发明人： Hitoshi Takeshita ,  Hirofumi Shimomura ,  Tatsuya Shiragaki ,  Naoya Henmi

IPC分类号： H04B1008

CPC分类号： H04L1/20 ,  H04B10/07953 ,  H04L25/063 ,  H04Q11/0005 ,  H04Q2011/0039 ,  H04Q2011/0045 ,  H04Q2011/0083

摘要： A signal quality monitoring method with reliability is disclosed. After extracting a clock signal from the light signal, a decision region is set for each bit of the light signal. The decision region is defined by a plurality of threshold amplitudes corresponding respectively to threshold phases which are produced with respect to the clock signal. The quality of the light signal is monitored depending on whether an amplitude of the light signal falls into the decision region at timings of the N threshold phases.

摘要翻译： 公开了一种具有可靠性的信号质量监测方法。 在从光信号提取时钟信号之后，为光信号的每一位设置判定区域。 决定区域由分别对应于相对于时钟信号产生的阈值相位的多个阈值幅度来定义。 根据在N个阈值相位的定时，光信号的幅度是否落入判定区域来监视光信号的质量。

公开(公告)号：US08639114B2

公开(公告)日：2014-01-28

申请号：US11916612

申请日：2006-06-28

申请人： Satomi Shioiri ,  Toshiharu Itou ,  Kiyoshi Fukuchi ,  Hitoshi Takeshita

发明人： Satomi Shioiri ,  Toshiharu Itou ,  Kiyoshi Fukuchi ,  Hitoshi Takeshita

IPC分类号： H04J14/02 ,  H04J14/08

CPC分类号： H04J14/08 ,  H04B10/5561 ,  H04B10/66 ,  H04J14/02

摘要： In the optical communication device and the optical communication system using DPSK modulation whose cost is low, whose size is small and whose power consumption is low, the N:1 multiplexer 125 generates a serial signal by multiplexing a parallel signal coded by the DPSK modulation coding units 115˜117 bit by bit on a time division basis. The electric-phase modulation optical converter 127 converts a serial signal into a phase modulation light. The N-bit delay interferometer 132 executes DPSK decoding with respect to a phase modulation light by comparison with an N-bit preceding optical signal. The optical-electric signal converter 134 converts a decoded intensity modulation light into an electric signal. The N:1 demultiplexer 136 divides an electric signal converted by the optical-electric signal converter 134 into a number N of signals bit by bit on a time division basis.

摘要翻译： 在光通信设备和使用成本低，尺寸小并且功耗低的DPSK调制的光通信系统中，N：1多路复用器125通过多路复用由DPSK调制编码编码的并行信号来生成串行信号 单位115〜117，按时间划分。 电相调制光转换器127将串行信号转换为相位调制光。 N位延迟干涉仪132通过与N位在前的光信号进行比较来执行相对于相位调制光的DPSK解码。 光电信号转换器134将解码的强度调制光转换成电信号。 N：1解复用器136将由光电信号转换器134转换的电信号分时分割为数字N个信号。

公开(公告)号：US08175455B2

公开(公告)日：2012-05-08

申请号：US12442559

申请日：2007-10-04

申请人： Hitoshi Takeshita ,  Toshiharu Ito

发明人： Hitoshi Takeshita ,  Toshiharu Ito

IPC分类号： H04B10/08

CPC分类号： H04B10/2569

摘要： The present invention is intended to provide an optical transmission system which is applicable not only to a known signal but also to an unknown signal, and has a high reliability at a low cost. A branching device branches an optical transmission output of a transmitter, and transmits the branched signals through different optical transmission channels. A polarization mode dispersion monitor monitors the degree of polarization mode dispersion from the optical transmission channels at the receiving end. A switch control circuit and a switch select a signal which is less affected by a deterioration in quality due to polarization mode dispersion, and outputs the selected signal to receiver 8. In this way, the probability of a deterioration in the quality of a signal due to polarization mode dispersion can be reduced for a transmission signal.

摘要翻译： 本发明旨在提供一种光传输系统，其不仅可应用于已知信号，而且可应用于未知信号，并且以低成本具有高可靠性。 分支装置分支发射机的光传输输出，并通过不同的光传输信道发送分支的信号。 偏振模色散监视器监视来自接收端的光传输通道的偏振模色散程度。 开关控制电路和开关选择由于偏振模式色散而受质量劣化影响较小的信号，并将选择的信号输出到接收器8.以这种方式，信号质量劣化的概率 可以减少发射信号的偏振模色散。

公开(公告)号：US20100021169A1

公开(公告)日：2010-01-28

申请号：US12442559

申请日：2007-10-04

申请人： Hitoshi Takeshita ,  Toshiharu Ito

发明人： Hitoshi Takeshita ,  Toshiharu Ito

IPC分类号： H04J14/02

CPC分类号： H04B10/2569

摘要： The present invention is intended to provide an optical transmission system which is applicable not only to a known signal but also to an unknown signal, and has a high reliability at a low cost. A branching device branches an optical transmission output of a transmitter, and transmits the branched signals through different optical transmission channels. A polarization mode dispersion monitor monitors the degree of polarization mode dispersion from the optical transmission channels at the receiving end. A switch control circuit and a switch select a signal which is less affected by a deterioration in quality due to polarization mode dispersion, and outputs the selected signal to receiver 8. In this way, the probability of a deterioration in the quality of a signal due to polarization mode dispersion can be reduced for a transmission signal.

摘要翻译： 本发明旨在提供一种光传输系统，其不仅可应用于已知信号，而且可应用于未知信号，并且以低成本具有高可靠性。 分支装置分支发射机的光传输输出，并通过不同的光传输信道发送分支的信号。 偏振模色散监视器监视来自接收端的光传输通道的偏振模色散程度。 开关控制电路和开关选择由于偏振模式色散而受质量劣化影响较小的信号，并将选择的信号输出到接收器8.以这种方式，信号质量劣化的概率 可以减少发射信号的偏振模色散。

公开(公告)号：US20080152359A1

公开(公告)日：2008-06-26

申请号：US11951856

申请日：2007-12-06

申请人： Satomi SHIOIRI ,  Kiyoshi Fukuchi ,  Toshiharu Ito ,  Hitoshi Takeshita

发明人： Satomi SHIOIRI ,  Kiyoshi Fukuchi ,  Toshiharu Ito ,  Hitoshi Takeshita

IPC分类号： H04B10/06

CPC分类号： H04B10/677

摘要： The present invention provides a light receiving apparatus using the DQPSK demodulation method. The light receiving apparatus comprises: one Mach-Zehnder interferometer for branching a received light signal into light signals at two arms to allow the branched two light signals to interfere with each other; one balanced photoelectric converter for converting the two interfered light signals, by using the Mach-Zehnder interferometer, into an electric signal corresponding to a difference between light intensities of the two light signals; and a phase adjuster for dynamically shifting the phase of a light signal passed through one of the two arms at the Mach-Zehnder interferometer.

摘要翻译： 本发明提供一种使用DQPSK解调方法的光接收装置。 光接收装置包括：一个马赫 - 曾德干涉仪，用于将接收到的光信号分成两个臂的光信号，以允许分支的两个光信号相互干扰; 一个平衡光电转换器，用于通过使用马赫 - 策德尔干涉仪将两个干涉光信号转换成对应于两个光信号的光强度差的电信号; 以及相位调整器，用于在Mach-Zehnder干涉仪上动态地移动通过两个臂中的一个的光信号的相位。

公开(公告)号：US07340187B2

公开(公告)日：2008-03-04

申请号：US10740789

申请日：2003-12-22

申请人： Hitoshi Takeshita

发明人： Hitoshi Takeshita

IPC分类号： H04B10/06

CPC分类号： H04B10/0795

摘要： In an optical signal monitoring method in wavelength multiplexing and an optical network, an area corresponding to a characteristic pattern of an eye pattern of an optical signal to be monitored, which characterizes a deterioration, is extracted from a database storing a map which associates a quality deterioration factor and deterioration amount of the optical signal with the characteristic pattern of the area of the eye pattern of the optical signal. The extracted pattern is collated with the map stored in the database to monitor the quality deterioration factor and deterioration amount of the optical signal, an occurrence time of a deterioration, duration of a deterioration, a deterioration occurrence cycle, and a deterioration duration cycle. An optical signal monitoring apparatus is also disclosed.

摘要翻译： 在波分复用和光网络中的光信号监测方法中，从存储有将质量关联的地图的数据库中提取与特征为恶化的要监视的光信号的眼图的特征图案相对应的区域 具有光信号的眼图的区域的特征图案的光信号的劣化因子和劣化量。 将提取的图案与存储在数据库中的图对照，以监视质量劣化因子和光信号的劣化量，劣化的发生时间，劣化的持续时间，劣化发生周期和劣化持续时间周期。 还公开了一种光信号监测装置。

公开(公告)号：US07280470B2

公开(公告)日：2007-10-09

申请号：US10654222

申请日：2003-09-03

申请人： Tatsuya Shiragaki ,  Naoya Henmi ,  Makoto Nishio ,  Hitoshi Takeshita ,  Hirofumi Shimomura

发明人： Tatsuya Shiragaki ,  Naoya Henmi ,  Makoto Nishio ,  Hitoshi Takeshita ,  Hirofumi Shimomura

IPC分类号： H04J3/04 ,  H04J14/00 ,  G01R31/08 ,  G02F1/00 ,  H04B10/08

CPC分类号： H04J14/0283 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0295 ,  H04J14/0297

摘要： Multiple working paths are established on each working rings and multiple protection paths are established on each of multiple protection rings. A working path on a first working ring spans across first and second nodes for signal transmission in a first direction of the ring, and a working path on a second working ring spans across the first and second nodes for signal transmission in a second, opposite direction of the ring. A protection path on a first protection ring spans across the first and second nodes for signal transmission in said second direction, and a protection path on a second protection ring spans across the first and second nodes for signal transmission in said first direction. The first and second nodes normally use the working paths, respectively. When one of the working paths fails, the first and second nodes use a corresponding protection path.

摘要翻译： 在每个工作环上建立多个工作路径，并在多个保护环中的每一个上建立多个保护路径。 第一工作环上的工作路径横跨第一和第二节点，用于在环的第一方向上进行信号传输，并且第二工作环上的工作路径跨越第一和第二节点跨过第二和相反方向进行信号传输 的戒指 第一保护环上的保护路径穿过第一和第二节点，用于在所述第二方向上进行信号传输，并且第二保护环上的保护路径横跨第一和第二节点跨过所述第一方向进行信号传输。 第一和第二节点通常分别使用工作路径。 当其中一个工作路径发生故障时，第一个和第二个节点使用相应的保护路径。

公开(公告)号：US06657952B1

公开(公告)日：2003-12-02

申请号：US09200583

申请日：1998-11-27

申请人： Tatsuya Shiragaki ,  Naoya Henmi ,  Makoto Nishio ,  Hitoshi Takeshita ,  Hirofumi Shimomura

发明人： Tatsuya Shiragaki ,  Naoya Henmi ,  Makoto Nishio ,  Hitoshi Takeshita ,  Hirofumi Shimomura

IPC分类号： G01R3108

CPC分类号： H04J14/0283 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0295 ,  H04J14/0297

摘要： In a ring topology network, a number of nodes interconnect transmission links to form first and second working rings and first and second optical protection rings in a ring topology. Multiple working paths are established on each working ring and multiple protection paths are established on each protection ring corresponding to the working paths. A first working path spans across first and second nodes for transmission of a signal in a first direction of the ring topology, and a second working path of the second working rings spans across the first and second nodes for transmission of a signal in a second direction of the ring topology opposite to the first direction. A first protection path on the first protection ring spans across the first and second nodes for transmission of a signal in the second direction of the ring topology, and a second protection path of the second protection ring spans across the first and second nodes for transmission of a signal in the first direction of the ring topology. The first and second nodes normally use the first and second working paths, respectively. Responsive to a failure of one of the first and second working paths, the first and second nodes use a corresponding one of the first and second protection paths, instead of the failed working path.

摘要翻译： 在环形拓扑网络中，多个节点互连传输链路以形成环形拓扑中的第一和第二工作环以及第一和第二光学保护环。 在每个工作环上建立多个工作路径，并在与工作路径对应的每个保护环上建立多条保护路径。 第一工作路径横跨第一和第二节点，用于在环形拓扑的第一方向传输信号，并且第二工作环的第二工作路径横跨第一和第二节点跨过第二方向传输信号 的环形拓扑与第一个方向相反。 第一保护环上的第一保护路径穿过第一和第二节点，用于在环形拓扑的第二方向上传输信号，并且第二保护环的第二保护路径跨过第一和第二节点传输 环形拓扑的第一个方向的信号。 第一和第二节点通常分别使用第一和第二工作路径。 响应于第一和第二工作路径之一的故障，第一和第二节点使用第一和第二保护路径中的对应的一个，而不是故障工作路径。

公开(公告)号：US06407834B1

公开(公告)日：2002-06-18

申请号：US09153217

申请日：1998-09-14

申请人： Hitoshi Takeshita ,  Naoya Henmi

发明人： Hitoshi Takeshita ,  Naoya Henmi

IPC分类号： H04B1008

CPC分类号： H04J14/0295 ,  H04J14/0201 ,  H04J14/0227 ,  H04J14/0245 ,  H04J14/0249 ,  H04J14/0283 ,  H04J14/0284 ,  H04J14/0286

摘要： Optical regenerative relay amplifier 102 has a function for monitoring the power of optical signals from an optical fiber 101, and issuing an optical signal trouble detection signal (AIS (Alarm Indication Signal)) for shutting down the optical power in case that optical signal inputs are lost, and notifying the trouble, and optical ADMs 103 have a wavelength path selecting function, a wavelength path bundle function, and a wavelength path trouble or quality monitoring function in addition to an AIS issue function, and the optical cross-connect systems 104 have an AIS issue function, a function for monitoring a trouble or quality deterioration of optical signals for every wavelength path, a wavelength path grooming function, and a wavelength path protection function, and the terminal stations 105 transmit and receive services by optical signals having predetermined wavelengths, and monitoring a trouble or quality deterioration of optical signals for every wavelength path is conducted without depending on signal speed and format.

摘要翻译： 光学再生继电器放大器102具有用于监视来自光纤101的光信号的功率的功能，并且发出光信号故障检测信号（AIS（报警指示信号）），用于在光信号输入为 丢失并通知故障，除了AIS发布功能之外，光ADM103具有波长路径选择功能，波长路径束功能，波长路径故障或质量监视功能，并且光交叉连接系统104具有 AIS发布功能，用于监视每个波长路径的光信号的故障或质量恶化的功能，波长路径梳理功能和波长路径保护功能，并且终端105通过具有预定波长的光信号来发送和接收业务 并且对于每个波长路径监视光信号的故障或质量恶化进行 根据信号速度和格式。