公开(公告)号：US07462812B2

公开(公告)日：2008-12-09

申请号：US12051425

申请日：2008-03-19

申请人： Yutaka Kai ,  Yasuhiko Aoki ,  Eric Gouardes ,  Yoshiaki Nakano

发明人： Yutaka Kai ,  Yasuhiko Aoki ,  Eric Gouardes ,  Yoshiaki Nakano

IPC分类号： H01J40/14 ,  H04J14/00

CPC分类号： H04Q11/0005 ,  H04Q2011/002 ,  H04Q2011/0039 ,  H04Q2011/0049

摘要： An optical switching system having a transmission node. The transmission node includes a bit pattern processing unit for processing a bit pattern of transmitted data to stabilize optical power of a frame signal light to be monitored and a frame signal light producing unit for producing frame signal light to be transmitted on the basis of the bit pattern processed by the bit pattern processing unit.

摘要翻译： 一种具有传输节点的光交换系统。 发送节点包括：位图案处理单元，用于处理发送数据的位模式以稳定要监视的帧信号光的光功率;以及帧信号发光单元，用于根据该位产生要发送的帧信号光 图案处理单元处理的图案。

公开(公告)号：US07366426B2

公开(公告)日：2008-04-29

申请号：US10787137

申请日：2004-02-27

申请人： Yutaka Kai ,  Hideyuki Miyata

发明人： Yutaka Kai ,  Hideyuki Miyata

IPC分类号： H04B10/04 ,  H04B10/12

CPC分类号： H04J14/0205 ,  H04B10/572 ,  H04J14/0204 ,  H04J14/0209 ,  H04J14/021 ,  H04J14/0213 ,  H04J14/022

摘要： A wavelength stabilizing filter has a wavelength transmission characteristic curve that has its peak in a wavelength located between a first continuous set band and a second continuous set band longer in wavelength than the first set band, and that linearly drops from the peak toward the shorter wavelength side than the first set band and also toward the longer wavelength side longer than the second set band. A control unit generates a control signal needed to enable an optical tunable filter to extract signal light with a predetermined wavelength from an inputted WDM signal, based on light transmitted through the wavelength stabilizing filter.

摘要翻译： 波长稳定滤波器具有波长传输特性曲线，波长传播特性曲线在位于第一连续设定波段和波长比第一设定波段长的第二连续设定波段之间的波长处具有峰值，并且从峰值朝向较短波长线性地下降 并且还朝向比第二设定频带长的较长波长侧。 控制单元基于通过波长稳定滤波器透射的光产生使光学可调谐滤波器从输入的WDM信号中提取具有预定波长的信号光所需的控制信号。

公开(公告)号：US07308168B2

公开(公告)日：2007-12-11

申请号：US11194565

申请日：2005-08-02

申请人： Yutaka Takita ,  Yutaka Kai

发明人： Yutaka Takita ,  Yutaka Kai

IPC分类号： G02B6/35 ,  G02F

CPC分类号： H04Q11/0005 ,  H04Q2011/0049

摘要： The present invention relates to an optical switch apparatus made to successively carry out the route switching with respect to frame signal light inputted through various paths while eliminating the dispersion of an output power value. In the optical switch apparatus, input side deflecting units are disposed in corresponding relation to a plurality of input ports and output side deflecting units are disposed in corresponding relation to a plurality of output ports. Each input side deflecting unit and each output side deflecting unit are constructed in a manner such that a plurality of optical deflecting elements made to deflect signal light in response to an electric field applied are arranged in a cascade fashion, and the optical deflecting element constituting the input side deflecting unit or the output side deflecting unit is made so as to variably adjust the level of signal light to be outputted from the output side deflecting unit to the output port.

摘要翻译： 光开关装置技术领域本发明涉及一种在消除输出功率值的偏差的同时，相对于通过各种路径输入的帧信号光依次进行路由切换的光开关装置。 在光开关装置中，输入侧偏转单元以与多个输入端口对应的关系设置，输出侧偏转单元以与多个输出端口对应的关系设置。 每个输入侧偏转单元和每个输出侧偏转单元被构造成使得响应于所施加的电场而使信号光偏转的多个光学偏转元件以级联的方式布置，并且光​​学偏转元件构成 输入侧偏转单元或输出侧偏转单元被制成为可变地调节从输出侧偏转单元输出到输出端口的信号光的电平。

公开(公告)号：US20070147841A1

公开(公告)日：2007-06-28

申请号：US11681463

申请日：2007-03-02

申请人： Yutaka Takita ,  Yutaka Kai ,  Yasuhiko Aoki ,  Kyosuke Sone

发明人： Yutaka Takita ,  Yutaka Kai ,  Yasuhiko Aoki ,  Kyosuke Sone

IPC分类号： H04J14/02

CPC分类号： H04J14/028 ,  G02F2203/585 ,  H04J14/0204 ,  H04J14/0206 ,  H04J14/021 ,  H04J14/0212 ,  H04J14/0221 ,  H04J14/0283 ,  H04J14/029 ,  H04J14/0294

摘要： Optical add/drop nodes are used in a network having a pair of optical transmission paths for transmitting optical signals in opposite directions to each other. Each add/drop node comprises a variable split ratio optical coupler for splitting an optical signal output from a transmitter. The split ratio of the variable split ratio optical coupler is set such that the optical power levels of the signals added through the respective optical add/drop nodes are equal to one another respectively on the pair of optical transmission paths.

摘要翻译： 光分插节点用于具有一对光传输路径的网络中，用于将光信号彼此相反的方向传输。 每个添加/分出节点包括用于分离从发射机输出的光信号的可变分光比光耦合器。 可变分频比光耦合器的分频比被设置为使得通过相应的光分插节点添加的信号的光功率电平分别在一对光传输路径上彼此相等。

公开(公告)号：US20060067696A1

公开(公告)日：2006-03-30

申请号：US11038515

申请日：2005-01-21

申请人： Yutaka Kai

发明人： Yutaka Kai

IPC分类号： H04J14/02

CPC分类号： H04J14/0283 ,  H04J14/0204 ,  H04J14/0206 ,  H04J14/0209 ,  H04J14/021 ,  H04J14/0213 ,  H04J14/0227 ,  H04J14/0238 ,  H04J14/028 ,  H04J14/0284

摘要： Provided are a plurality of fixed wavelength drop filters 35 demultiplexing optical signals having a plurality of different fixed wavelengths, a plurality of fixed wavelength add filters 36 provided corresponding respectively to the fixed wavelength drop filters 35 and adding the optical signals having the fixed wavelengths wavelength division multiplexed light flowing along a transmission path 1, a first optical branching unit 31 branching part of the wavelength division multiplexed light flowing along the transmission path 1, and a variable wavelength drop filter 32 demultiplexing the optical signal having the wavelength corresponding to a specified value from the wavelength division multiplexed light branched by the first optical branching unit 31.

摘要翻译： 提供了多个固定波长分离滤波器35，其对具有多个不同固定波长的光信号进行解复用，多个固定波长加法滤波器36分别对应于固定波长下降滤波器35，并将具有固定波长波长的光信号 沿着传输路径1流动的多路复用光，沿着传输路径1流动的波分复用光的一部分的第一光分路单元31和将具有对应于指定值的波长的光信号解复用的可变波长丢失滤波器32， 由第一光分支单元31分支的波分复用光。

公开(公告)号：US08867927B2

公开(公告)日：2014-10-21

申请号：US12879820

申请日：2010-09-10

申请人： Yuichi Akiyama ,  Takeshi Hoshida ,  Akira Miura ,  Yutaka Kai ,  Hiroki Ooi ,  Jens Rasmussen ,  Kentaro Nakamura ,  Naoki Kuwata ,  Yoshinori Nishizawa ,  Tomoo Takahara ,  Masahiro Yuki

发明人： Yuichi Akiyama ,  Takeshi Hoshida ,  Akira Miura ,  Yutaka Kai ,  Hiroki Ooi ,  Jens Rasmussen ,  Kentaro Nakamura ,  Naoki Kuwata ,  Yoshinori Nishizawa ,  Tomoo Takahara ,  Masahiro Yuki

IPC分类号： H04B10/04

CPC分类号： G02F1/2255 ,  G02F1/0123 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/50575 ,  H04B10/50577 ,  H04B10/50595 ,  H04B10/5162 ,  H04B10/5165 ,  H04B10/5561 ,  H04B10/66 ,  H04B10/677

摘要： A phase shift unit provides a prescribed phase difference (π/2, for example) between a pair of optical signals transmitted via a pair of arms constituting a data modulation unit. A low-frequency signal f0 is superimposed on one of the optical signals. A signal of which phase is shifted by π/2 from the low-frequency signal f0 is superimposed on the other optical signal. A pair of the optical signals is coupled, and a part of which is converted into an electrical signal by a photodiode. 2f0 component contained in the electrical signal is extracted. Bias voltage provided to the phase shift unit is controlled by feedback control so that the 2f0 component becomes the minimum.

摘要翻译： 相移单元在经由构成数据调制单元的一对臂发送的一对光信号之间提供规定的相位差（＆pgr / / 2）。 低频信号f0叠加在一个光信号上。 将相位从低频信号f0移位了＆pgr / / 2的信号叠加在另一个光信号上。 一对光信号被耦合，其一部分由光电二极管转换成电信号。 提取包含在电信号中的2f0分量。 通过反馈控制来控制提供给相移单元的偏压，使得2f0分量成为最小值。

公开(公告)号：US08170416B2

公开(公告)日：2012-05-01

申请号：US12076856

申请日：2008-03-24

申请人： Yutaka Kai ,  Yasuhiko Aoki

发明人： Yutaka Kai ,  Yasuhiko Aoki

IPC分类号： H04J14/00

CPC分类号： H04Q11/0005 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04Q2011/0011 ,  H04Q2011/0013 ,  H04Q2011/0016 ,  H04Q2011/0024 ,  H04Q2011/0039 ,  H04Q2011/005 ,  H04Q2011/0052

摘要： An optical switching device the size and costs of which are reduced by decreasing the number of switching elements and which can flexibly accommodate the expansion of the number of ports. An optical demultiplexing section has 2n (n=1, 2, 3, . . . ) input ports and 2m (m>n) output ports and includes demultiplexing couplers for demultiplexing input optical packets. A switch fabric section includes optical gate elements for switching optical packets outputted from the optical demultiplexing section by switch drive control. An optical multiplexing section has 2m input ports and 2n output ports and includes multiplexing couplers for multiplexing the optical packets which pass through the optical gate elements. A scheduler exercises control over an entire optical packet switching process.

摘要翻译： 通过减少开关元件的数量并且可以灵活地适应端口数量的扩展来减小尺寸和成本的光开关装置。 光解复用部分具有2n（n = 1,2,3，...）输入端口和2m（m> n）个输出端口，并且包括用于解复用输入光分组的解复用耦合器。 交换结构部分包括用于通过开关驱动控制来切换从光解复用部分输出的光分组的光栅元件。 光复用部分具有2m输入端口和2n个输出端口，并且包括用于复用通过光栅元件的光分组的多路耦合器。 调度器对整个光分组交换过程进行控制。

公开(公告)号：US08155517B2

公开(公告)日：2012-04-10

申请号：US12578021

申请日：2009-10-13

申请人： Keisuke Harada ,  Yutaka Kai

发明人： Keisuke Harada ,  Yutaka Kai

IPC分类号： H04B10/00

CPC分类号： H04Q11/0005 ,  H04Q11/0066 ,  H04Q2011/0039 ,  H04Q2011/0083

摘要： An optical packet switching apparatus includes plural optical switches, an optical switching section that switches a path of an optical packet transmitted thereto according to the switch control signal to output the optical packet, and a control section that takes out a header portion representing a destination of the optical packet transmitted, photoelectrically converts the header to generate the switch control signal according to the destination to transmit the switch control signal to the optical switching section and controls the optical switch. The apparatus further includes a light monitor section that monitors a light quantity level of the optical packet transmitted and a light quantity level of the optical packet to be sent out, and an abnormality recognizing section that recognizes an effective timing of monitoring of the light quantity levels based on the switching control signal, and recognizes an abnormality based on the light quantity levels at the timing.

摘要翻译： 光分组交换装置包括多个光开关，光切换部分，根据切换控制信号切换发送到其上的光分组的路径，以输出光分组;以及控制部分，取出表示目的地的目的地的报头部分 发送的光分组，根据目的地对报头进行光电转换以产生开关控制信号，以将开关控制信号发送到光开关部分并控制光开关。 该装置还包括监视发送的光学分组的光量级别和要发送的光学分组的光量级别的光监视部分和识别光量级别的监视的有效定时的异常识别部分 基于开关控制信号，并且基于该定时处的光量水平来识别异常。

公开(公告)号：US07643751B2

公开(公告)日：2010-01-05

申请号：US11826889

申请日：2007-07-19

申请人： Kyosuke Sone ,  Yutaka Kai

发明人： Kyosuke Sone ,  Yutaka Kai

IPC分类号： G02F1/00

CPC分类号： H04L43/0811 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/021 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/0258 ,  H04J14/0283 ,  H04J14/0294 ,  H04J14/0295 ,  H04L12/437 ,  H04L41/06 ,  H04L41/0816 ,  H04L41/082

摘要： A network managing apparatus is connected to one of multiple OADM nodes that execute optical communication on an optical ring network configured by a two-line transmission path including of an active line and a backup line. The apparatus includes a storing unit that stores arrangement information of the OADM nodes and operating wavelength information of optical signals transmitted by the nodes. A controlling unit updates the operating wavelength information retained in the storing unit based on fault information from the OADM nodes and distributes the updated operating wavelength information to the OADM nodes.

摘要翻译： 网络管理装置连接到在由包括有效线路和备用线路的双线路传输路径配置的光环网络上执行光通信的多个OADM节点之一。 该装置包括存储单元，其存储OADM节点的布置信息和由节点发送的光信号的工作波长信息。 控制单元基于来自OADM节点的故障信息来更新保存在存储单元中的操作波长信息，并将更新的操作波长信息分发给OADM节点。

公开(公告)号：US20090297162A1

公开(公告)日：2009-12-03

申请号：US12461267

申请日：2009-08-05

申请人： Yutaka Kai ,  Yasuhiko Aoki

发明人： Yutaka Kai ,  Yasuhiko Aoki

IPC分类号： H04B10/02

CPC分类号： H04J3/1694 ,  H04B10/272 ,  H04J3/22 ,  H04Q11/0067 ,  H04Q2011/0064

摘要： An optical communication base station which receives an upstream optical signal having an upstream bit rate specific to each one of a plurality of lower order communication units from a corresponding one of the plurality of lower order communication units, and which transmits a downstream optical signal having a downstream bit rate specific to each one of the plurality of lower order communication units to a designated one of the plurality of lower order communication units, includes; a first optical signal conversion unit which changes the bit rate of the upstream optical signal and thereby converts the upstream optical signal into a fixed bit-rate inter-station optical signal; and a second optical signal conversion unit which converts the inter-station optical signal into the downstream optical signal by changing the bit rate of the inter-station optical signal according to the designated one of the plurality of lower order communication units.

摘要翻译： 一种光通信基站，其从多个下位通信单元中的相应一个接收具有对多个低阶通信单元中的每一个特定的上行比特率的上行光信号，并且发送具有 所述多个低阶通信单元中的每一个的特定下行比特率包括： 第一光信号转换单元，其改变上游光信号的比特率，从而将上游光信号转换为固定比特率站间光信号; 以及第二光信号转换单元，通过根据多个低阶通信单元中指定的一个来改变站间光信号的比特率，将站间光信号转换成下行光信号。