公开(公告)号：US07433600B2

公开(公告)日：2008-10-07

申请号：US09960405

申请日：2001-09-24

申请人： Toru Katagiri ,  Hiroaki Tomofuji ,  Hiroshi Onaka

发明人： Toru Katagiri ,  Hiroaki Tomofuji ,  Hiroshi Onaka

IPC分类号： H04J14/02 ,  H04B10/20

CPC分类号： H04Q11/0005 ,  H04J14/0206 ,  H04J14/0208 ,  H04J14/0209 ,  H04J14/021 ,  H04J14/0212 ,  H04J14/0213 ,  H04Q2011/0016 ,  H04Q2011/0018 ,  H04Q2011/0024 ,  H04Q2011/0075 ,  H04Q2011/0092

摘要： Disclosed herein is an optical node device applicable to an optical network including a closed loop provided by an optical fiber. This optical node device includes a tunable wavelength selecting element adapted to input WDM signal light obtained by wavelength division multiplexing a plurality of optical signals having different wavelengths, the tunable wavelength selecting element having a function of dropping at least one optical signal from the WDM signal light and a function of adding at least one optical signal to at least one unassigned wavelength channel of the WDM signal light; and a wavelength selecting filter optically connected to the tunable wavelength selecting element for removing noise present in any bands other than a signal band of each optical signal passing through the tunable wavelength selecting element. With this configuration, the oscillation of optical power in the closed loop can be prevented by the use of the wavelength selecting filter for removing noise in any bands other than the signal band.

摘要翻译： 这里公开了一种适用于包括由光纤提供的闭环的光网络的光节点装置。 该光节点装置包括可调波长选择元件，其适于输入通过波分复用具有不同波长的多个光信号而获得的WDM信号光，该可调波长选择元件具有从WDM信号光中丢弃至少一个光信号的功能 以及将至少一个光信号添加到WDM信号光的至少一个未分配波长信道的功能; 以及波长选择滤波器，其光学连接到可调波长选择元件，用于去除除了通过可调波长选择元件的每个光信号的信号频带之外的任何频带中存在的噪声。 利用这种配置，可以通过使用波长选择滤波器来除去信号频带以外的任何频带中的噪声来防止闭环中的光功率的振荡。

公开(公告)号：US07200333B2

公开(公告)日：2007-04-03

申请号：US09962164

申请日：2001-09-26

申请人： Toru Katagiri ,  Hiroaki Tomofuji ,  Hiroshi Onaka

发明人： Toru Katagiri ,  Hiroaki Tomofuji ,  Hiroshi Onaka

IPC分类号： H04J14/02 ,  H04B10/12 ,  H04B10/00

CPC分类号： H04B10/2916 ,  H04B10/2525 ,  H04B2210/003 ,  H04B2210/258

摘要： An optical communication apparatus performs wavelength division multiplexing with respect to signals of a plurality of signal transmission bands. The apparatus includes a first optical unit which effects distributed Raman amplification and has a characteristic that compensates for dispersion of a transmission path to which the optical communication apparatus is connected, with respect to at least one of the signal transmission bands.

摘要翻译： 光通信装置对多个信号传输频带的信号执行波分复用。 该装置包括实现分布式拉曼放大的第一光学单元，并且具有相对于至少一个信号传输频带补偿光通信装置所连接的传输路径的色散的特性。

公开(公告)号：US07062173B2

公开(公告)日：2006-06-13

申请号：US09963471

申请日：2001-09-27

申请人： Hiroaki Tomofuji ,  Toru Katagiri

发明人： Hiroaki Tomofuji ,  Toru Katagiri

IPC分类号： H04J14/02

CPC分类号： G02B6/29361 ,  G02B6/12021 ,  G02B6/29394 ,  H04B10/25073 ,  H04J14/0208 ,  H04J14/0209 ,  H04J14/0213 ,  H04J14/0221

摘要： An optical device can realize a further severer wave synthesizing/separation characteristic, compared with the characteristic in the past. The optical device includes a branching filter which separates wavelength division multiplexed signal lights of a plurality of wavelength groups, into first wavelength groups and second wavelength groups consisting of wavelength groups which do not come into contact with the wavelength groups making up the first wavelength groups, on the wavelength axis; a functional circuit that functionally processes the wavelength groups on a wavelength group-by-group basis of the separated first wavelength groups and second wavelength groups; and a multiplexer connected to the branching filter through the functional circuit, for synthesizing the separated first wavelength groups and second wavelength groups.

公开(公告)号：US08861956B2

公开(公告)日：2014-10-14

申请号：US13533332

申请日：2012-06-26

申请人： Yasuki Fujii ,  Ryoichi Mutoh ,  Toru Katagiri

发明人： Yasuki Fujii ,  Ryoichi Mutoh ,  Toru Katagiri

IPC分类号： H04J14/00 ,  H04J14/02 ,  H04Q11/00

CPC分类号： H04J14/0295 ,  H04J14/0269 ,  H04J14/0283 ,  H04Q11/0005 ,  H04Q2011/0039

摘要： An apparatus switches paths in a wavelength-multiplexing network in which a first number of wavelengths each used for a path to transmit an optical signal are multiplexed into an optical fiber. The apparatus includes an entire switching unit and a second number of individual switching units where the second number is smaller than the first number. The entire switching unit is configured to perform a path-switching process for switching a path, simultaneously on all the first number of wavelengths when failures have occurred for all the first number of wavelengths. The second number of individual switching units are each configured to perform the path-switching process individually on one of a third number of wavelengths included in the first number of wavelengths when at least one failure has occurred for the third number of wavelengths where the third numbers is smaller than the first number.

摘要翻译： 一种装置切换波长复用网络中的路径，其中每个用于发送光信号的路径的第一数量的波长被复用到光纤中。 该装置包括整个开关单元和第二数量的单独开关单元，其中第二数量小于第一数量。 整个开关单元被配置为执行用于在所有第一数量的波长发生故障时同时对所有第一数量的波长切换路径的路径切换处理。 第二数量的各个开关单元被配置为当对于第三数量的波长发生至少一个故障时，分别在包括在第一波长数中的第三数量波长之一上执行路径切换处理，其中第三数量 小于第一个数字。

公开(公告)号：US08594508B2

公开(公告)日：2013-11-26

申请号：US13137024

申请日：2011-07-15

申请人： Hisao Nakashima ,  Takeshi Hoshida ,  Takahito Tanimura ,  Toru Katagiri ,  Shoichiro Oda

发明人： Hisao Nakashima ,  Takeshi Hoshida ,  Takahito Tanimura ,  Toru Katagiri ,  Shoichiro Oda

IPC分类号： H04B10/00

CPC分类号： H04B10/2572 ,  H04B10/532 ,  H04B10/5561

摘要： An optical transmission system, where in an optical transmitter a detection bit having a specific pattern set according to the number of bits to be transmitted within one symbol time, is imparted with respect to a transmission signal in which transmission information has been encoded according to a preset format, and an optical signal generated by modulating light according to the transmission signal is transmitted to a transmission line. In an optical receiver, logic inversion or bit swap of received data is detected and compensated by using the detection bit included in the received signal, a decoding process of the compensated received signal is executed. As a result, when an optical signal capable of transmitting multi-bit information within one symbol time is transferred, it is possible to realize excellent transmission characteristics, by reliably compensating an error in received data caused by the modulation format or the multiplex system of the optical signal.

摘要翻译： 一种光传输系统，其中在光发射机中，根据在一个符号时间内要发送的比特数的数量，具有特定模式集的检测比特，根据发送信号已被编码的发送信号 预设格式和根据发送信号调制光产生的光信号被发送到传输线。 在光接收机中，通过使用包含在接收信号中的检测位来检测和补偿接收数据的逻辑反转或位交换，执行经补偿的接收信号的解码处理。 结果，当在一个符号时间内能够发送多位信息的光信号被传送时，通过可靠地补偿由调制格式或多路复用系统引起的接收数据中的错误，可以实现优异的传输特性 光信号。

公开(公告)号：US20130028592A1

公开(公告)日：2013-01-31

申请号：US13533332

申请日：2012-06-26

申请人： Yasuki Fujii ,  Ryoichi Mutoh ,  Toru Katagiri

发明人： Yasuki Fujii ,  Ryoichi Mutoh ,  Toru Katagiri

IPC分类号： H04Q11/00 ,  H04J14/02

CPC分类号： H04J14/0295 ,  H04J14/0269 ,  H04J14/0283 ,  H04Q11/0005 ,  H04Q2011/0039

摘要： An apparatus switches paths in a wavelength-multiplexing network in which a first number of wavelengths each used for a path to transmit an optical signal are multiplexed into an optical fiber. The apparatus includes an entire switching unit and a second number of individual switching units where the second number is smaller than the first number. The entire switching unit is configured to perform a path-switching process for switching a path, simultaneously on all the first number of wavelengths when failures have occurred for all the first number of wavelengths. The second number of individual switching units are each configured to perform the path-switching process individually on one of a third number of wavelengths included in the first number of wavelengths when at least one failure has occurred for the third number of wavelengths where the third numbers is smaller than the first number.

摘要翻译： 一种装置切换波长复用网络中的路径，其中每个用于发送光信号的路径的第一数量的波长被复用到光纤中。 该装置包括整个开关单元和第二数量的单独开关单元，其中第二数量小于第一数量。 整个开关单元被配置为执行用于在所有第一数量的波长发生故障时同时对所有第一数量的波长切换路径的路径切换处理。 第二数量的各个开关单元被配置为当对于第三数量的波长发生至少一个故障时，分别在包括在第一波长数中的第三数量波长之一上执行路径切换处理，其中第三数量 小于第一个数字。

公开(公告)号：US20130010591A1

公开(公告)日：2013-01-10

申请号：US13609745

申请日：2012-09-11

申请人： Yuji Tochio ,  Toru Katagiri

发明人： Yuji Tochio ,  Toru Katagiri

IPC分类号： H04L12/26

CPC分类号： H04L12/437 ,  H04L12/40013 ,  H04Q2213/1301 ,  H04Q2213/13166 ,  H04Q2213/13167

摘要： An object is to simplify a process performed due to a failure recovery. To realize this object, the transmission apparatus includes a determining unit that determines, when a transmission apparatus receives a frame from each ring in a network including multiple rings in which a part of each ring is shared, whether failure information indicating that a failure has occurred in one of the rings is contained in one of the received frames. The transmission apparatus also includes a mapping unit that maps a frame that is determined by the determining unit to contain the failure information, onto a shared frame that is a frame used in a shared portion in the multiple rings. Accordingly, the process performed due to a failure recovery can be simplified.

摘要翻译： 目的是简化由于故障恢复而执行的进程。 为了实现该目的，传输装置包括：确定单元，确定在发送装置从包含多个环的多个环路的网络中接收到来自每个环的帧时，确定是否发生故障的故障信息 其中一个环包含在一个接收的帧中。 发送装置还包括映射单元，其将由确定单元确定的包含故障信息的帧映射到作为在多个环中的共享部分中使用的帧的共享帧。 因此，可以简化由于故障恢复而执行的处理。

公开(公告)号：US20120170928A1

公开(公告)日：2012-07-05

申请号：US11939646

申请日：2007-11-14

申请人： Toshiki TANAKA ,  Hisao Nakashima ,  Takeshi Hoshida ,  Toru Katagiri ,  Hiroki Ooi ,  Akira Miura

发明人： Toshiki TANAKA ,  Hisao Nakashima ,  Takeshi Hoshida ,  Toru Katagiri ,  Hiroki Ooi ,  Akira Miura

IPC分类号： H04J14/02 ,  H04B10/08

CPC分类号： H04J14/0286 ,  H04B10/2557 ,  H04B10/516 ,  H04J14/0204 ,  H04J14/0212 ,  H04J14/0217 ,  H04J14/0219 ,  H04J14/022 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0283

摘要： An optical transmitter is provided for transmitting a wavelength multiplexed signal comprising an intensity modulation optical signal and a phase modulation optical signal through a transmission line. The optical transmitter includes a bit time difference given signal generator for generating at least two optical signals having a bit time difference therebetween, from the wavelength multiplexed signal. The optical transmitter further includes a wavelength multiplexed signal output unit to which at least two optical signals are input from the bit time difference given signal generator, and which generates and outputs a wavelength multiplexed signal in which the bit time difference was given between the phase modulation optical signal and the phase modulation optical signal.

摘要翻译： 提供了一种用于通过传输线传输包括强度调制光信号和相位调制光信号的波分复用信号的光发射机。 所述光发射机包括位时间差给定信号发生器，用于从所述波长复用信号产生具有位时间差的至少两个光信号。 光发射机还包括波长多路复用信号输出单元，从比特时间差给定信号发生器输入至少两个光信号，并且生成并输出在相位调制之间给出比特时间差的波长多路复用信号 光信号和强度调制光信号。

公开(公告)号：US08000595B2

公开(公告)日：2011-08-16

申请号：US12056804

申请日：2008-03-27

申请人： Toru Katagiri

发明人： Toru Katagiri

IPC分类号： H04B10/06

CPC分类号： H04B10/677

摘要： An optical receiver including a demodulator to convert an in-phase signal of a received differential phase modulated optical signal into a first electrical signal, and to convert a quadrature signal of the received differential phase modulated optical signal into a second electrical signal; a decision member deciding logic states of the first and second electrical signals; a logic controller using the decision result of the decision member to control logic states of the first and second electrical signals; and a memory storing information relating to the decision result. The logic controller controls the logic state using the information relating to the decision result stored in the memory.

摘要翻译： 一种光接收机，包括：解调器，用于将接收到的差分相位调制光信号的同相信号转换为第一电信号，并将所接收的差分相位调制光信号的正交信号转换为第二电信号; 决定成员决定第一和第二电信号的逻辑状态; 逻辑控制器，其使用所述决策成员的判定结果来控制所述第一和第二电信号的逻辑状态; 以及存储器，其存储与所述判定结果有关的信息。 逻辑控制器使用与存储在存储器中的判定结果有关的信息来控制逻辑状态。

公开(公告)号：US07864892B2

公开(公告)日：2011-01-04

申请号：US11606067

申请日：2006-11-30

申请人： Tadashi Ikeuchi ,  Naoki Kuwata ,  Toru Katagiri

发明人： Tadashi Ikeuchi ,  Naoki Kuwata ,  Toru Katagiri

IPC分类号： H04L27/22

CPC分类号： H04L27/2096 ,  H04B10/677

摘要： A receiving/processing unit receives signals parallelized by a parallelizing unit, and executes a frame process including frame synchronization process on the signals. A phase comparing circuit and a phase judging circuit judge whether a bit delay is present based on a phase difference between a phase of a clock signal at a clock/data recovering unit and a phase of a clock signal at the parallelizing unit. The receiving/processing unit includes a logic processing circuit that executes a bit delay process based on a result of judgment by the phase comparing circuit and the phase judging circuit.

摘要翻译： 接收/处理单元接收由并行化单元并行化的信号，并对信号执行包括帧同步处理的帧处理。 相位比较电路和相位判断电路基于时钟/数据恢复单元的时钟信号的相位与并行化单元中的时钟信号的相位之间的相位差来判断是否存在位延迟。 接收/处理单元包括基于相位比较电路和相位判断电路的判断结果执行位延迟处理的逻辑处理电路。