公开(公告)号：US08019219B2

公开(公告)日：2011-09-13

申请号：US12045870

申请日：2008-03-11

申请人： Koji Matsunaga ,  Yutaka Kai

发明人： Koji Matsunaga ,  Yutaka Kai

IPC分类号： H04J14/00

CPC分类号： H04Q11/0005 ,  H04Q11/0066 ,  H04Q2011/0039 ,  H04Q2011/0045

摘要： An optical switch section that switches the path of an optical packet transmitted thereto and outputs the optical packet, and a control section that generates multiple switch control signals in accordance with the destination of an optical packet transmitted thereto, transmits the multiple control signals to the optical switch section through multiple signal transmission lines and controls the ON/OFF states of multiple optical switches are included, and delay measuring means for measuring a difference in delay time among the multiple signal transmission lines is provided. In this case, the control section adjusts the transmission times of the multiple switch control signals such that the difference in delay time measured by the delay measuring means can be cancelled and that the multiple switch control signals transmitted through the multiple signal transmission lines can arrive at the multiple optical switches simultaneously and transmits the multiple switch control signals.

摘要翻译： 一种光转换部分，其切换发送到其上的光学分组的路径并输出该光学分组;以及控制部分，其根据发送到其的光学分组的目的地产生多个切换控制信号，将该多个控制信号发送到光学 包括通过多个信号传输线路的开关部分并且控制多个光开关的ON / OFF状态，并且提供了用于测量多个信号传输线之间的延迟时间差的延迟测量装置。 在这种情况下，控制部分调整多个开关控制信号的传输时间，从而可以消除由延迟测量装置测量的延迟时间差，并且通过多个信号传输线传输的多个开关控制信号可以到达 多个光开关同时发送多个开关控制信号。

公开(公告)号：US20100027992A1

公开(公告)日：2010-02-04

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： H04B17/00 ,  H04B10/08 ,  H04J14/00

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：US20090003827A1

公开(公告)日：2009-01-01

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：US20060263098A1

公开(公告)日：2006-11-23

申请号：US11275420

申请日：2005-12-30

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（pi / 2）。 在其中一个光信号上叠加低频信号f 0 0。 将相位从低频信号f 0 0 <0>移位π/ 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2f 0 0分量。 通过反馈控制来控制提供给相移单元的偏压，使得2f 0 0分量成为最小。

公开(公告)号：US20060222289A1

公开(公告)日：2006-10-05

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

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：US20060023996A1

公开(公告)日：2006-02-02

申请号：US11092881

申请日：2005-03-30

申请人： Goji Nakagawa ,  Yutaka Kai

发明人： Goji Nakagawa ,  Yutaka Kai

IPC分类号： G02B6/28

CPC分类号： H04J14/0297 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/022 ,  H04J14/0283 ,  H04J14/0286

摘要： An optical add/drop multiplexer of the invention includes: a wavelength blocker for blocking signal light having at least one wavelength out of a plurality of signal lights included in WDM light supplied from a transmission line and passing the other signal light; an optical coupler for multiplexing signal light having the same wavelength as that of the signal light blocked by the wavelength blocker to signal light passed through the wavelength blocker; a WDM amplifier for amplifying the WDM light multiplexed by the optical coupler and outputting the amplified light; and an optical branch coupler for branching the WDM light output from the WDM amplifier into two lights, extracting signal light having at least one wavelength different from the wavelength of signal light multiplexed by the optical coupler from one of the branched lights, and outputting the other branched light to the transmission line. With the configuration, a small and cheap optical add/drop multiplexer as a flexible OADM node can be provided.

摘要翻译： 本发明的光分插复用器包括：波长阻断器，用于阻挡从传输线提供的WDM光中包括的多个信号光中的至少一个波长的信号光，并使另一个信号光通过; 用于对与波长阻挡器阻挡的信号光波长相同的信号光进行信号的光耦合器，用于对通过波长阻挡器的光信号进行信号; WDM放大器，用于放大由光耦合器复用的WDM光，并输出放大的光; 以及光分支耦合器，用于将从WDM放大器输出的WDM光分支到两个光中，从分支灯之一提取具有与由光耦合器复用的信号光的波长不同的至少一个波长的信号光，并输出另一个 分支的光到传输线。 通过该配置，可以提供作为灵活OADM节点的小型廉价的光分插复用器。

公开(公告)号：US06895141B2

公开(公告)日：2005-05-17

申请号：US10265794

申请日：2002-10-08

申请人： Hideyuki Miyata ,  Yutaka Kai ,  Isao Tsuyama

发明人： Hideyuki Miyata ,  Yutaka Kai ,  Isao Tsuyama

IPC分类号： G02F1/125 ,  G02F1/335 ,  H04B10/07 ,  H04B10/27 ,  H04B10/29 ,  H04B10/291 ,  H04B10/293 ,  H04B10/564 ,  H04B10/572 ,  H04J14/00 ,  H04J14/02 ,  G02B6/28

CPC分类号： H04J14/0221 ,  H04B10/25073 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/021 ,  H04J14/0213

摘要： In the control method for the optical filter according to the present invention, WDM signal light obtained by wavelength division multiplexing a plurality of optical signals having different wavelengths is supplied to an optical filter to obtain output WDM signal light including a part of the plurality of optical signals. The output WDM signal light is converted into an electrical signal per wavelength channel of the output WDM signal light. Then, the optical filter is controlled according to the electrical signal so that the characteristic of the optical filter becomes stable.

摘要翻译： 在根据本发明的滤光器的控制方法中，通过将具有不同波长的多个光信号进行波分复用获得的WDM信号光提供给滤光器，以获得包括多个光学部分的一部分的输出WDM信号光 信号。 输出WDM信号光被转换成输出WDM信号光的每个波长信道的电信号。 然后，根据电信号控制滤光器，使得滤光器的特性变得稳定。

公开(公告)号：US06785306B2

公开(公告)日：2004-08-31

申请号：US09739218

申请日：2000-12-19

申请人： Yutaka Kai ,  Hideyuki Miyata

发明人： Yutaka Kai ,  Hideyuki Miyata

IPC分类号： H01S310

CPC分类号： H01S5/0687 ,  H01S5/0612 ,  H01S5/4087 ,  H01S5/50

摘要： A wavelength-tunable stabilized laser is provided with a light source comprising a plurality of lasers capable of oscillating at a plurality of wavelengths, a light detecting part for detecting the light intensity of laser light output from the light source via a periodic filter, and a controlling part for generating oscillation of one of the lasers of the light source and controlling the oscillation wavelength of the laser so that the output value of the light detecting part becomes equal to a predetermined one of a plurality of target values. The wavelength-tunable stabilized laser is able to generate oscillation of laser light at a desired wavelength, of the plurality of wavelengths, and to stabilize the wavelength.

摘要翻译： 波长可调稳定激光器设置有包括能够以多个波长振荡的多个激光器的光源，用于检测经由周期滤波器从光源输出的激光的光强度的光检测部，以及 控制部分，用于产生光源中的一个激光器的振荡并控制激光器的振荡波长，使得光检测部分的输出值变得等于多个目标值中的预定值。 波长可调稳定的激光器能够产生在多个波长的期望波长处的激光的振荡，并且使波长稳定。

公开(公告)号：US06782017B1

公开(公告)日：2004-08-24

申请号：US09560151

申请日：2000-04-28

申请人： Yutaka Kai ,  Hideyuki Miyata ,  Hiroshi Onaka

发明人： Yutaka Kai ,  Hideyuki Miyata ,  Hiroshi Onaka

IPC分类号： H01S313

CPC分类号： H04B10/572 ,  H01S5/0078 ,  H01S5/0687 ,  H04B10/506

摘要： An object of the invention is to provide a wavelength locker which has a wider locking range than that of the wavelength locker in the prior art and which can cope with a plurality of wavelengths. The aforementioned objects are achieved by a wavelength locker, which comprises a periodic filter, a detecting part for detecting the intensity of a laser beam through the periodic filter, and a controlling part for controlling the wavelength of the laser beam to a desired wavelength in accordance with the output of the detecting part. In this wavelength locker, the FSR of the periodical filter is controlled according to space between the wavelengths, and refers to the number of wavelength to be locked, so that the characteristics corresponding to output wavelengths that vary in every period twice the space of wavelengths and are complementary to each other, can be obtained, and the locking range will become wider.

摘要翻译： 本发明的目的是提供一种具有比现有技术中的波长锁定器更宽的锁定范围并且可以应付多个波长的波长锁定器。 上述目的通过一种波长锁定器实现，该波长锁定器包括周期滤波器，用于检测通过周期滤波器的激光束的强度的检测部分，以及用于将激光束的波长控制为所需波长的控制部分 与检测部分的输出。 在该波长锁定器中，周期滤波器的FSR根据波长之间的空间来控制，并且是指要锁定的波长的数量，使得对应于输出波长的特性在每个周期中变化是波长空间的两倍， 互补，可以获得，锁定范围将变宽。

公开(公告)号：US06278536B1

公开(公告)日：2001-08-21

申请号：US09044127

申请日：1998-03-19

申请人： Yutaka Kai ,  Terumi Chikama

发明人： Yutaka Kai ,  Terumi Chikama

IPC分类号： H04J1402

CPC分类号： H04J14/0291 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0216 ,  H04J14/0221 ,  H04J14/0283

摘要： This invention discloses an optical transmission device used for bi-directional optical communications. The optical transmission device comprises a uni-directional optical signal processing unit for performing specified optical signal processing for optical signals transmitted in a single direction and a uni-direction/bi-direction changing unit for unifying the flows of clockwise and counterclockwise optical signals in a single direction, inputting these flow-unified optical signals to the uni-directional optical signal processing unit and dividing the flow of optical signals from the uni-directional optical signal processing unit between clockwise and counterclockwise directions. Bi-directional wavelength-division multiplexing optical communications can be performed by unifying the transmission routes (flows) of optical signals transmitted in two ways in a single direction and using the existing optical transmission device for uni-directional optical communications.

摘要翻译： 本发明公开了一种用于双向光通信的光传输设备。 光传输装置包括：单向光信号处理单元，用于对单向传输的光信号进行特定的光信号处理;以及单向/双向改变单元，用于将顺时针和逆时针光信号的流量统一在 将这些流统一的光信号输入到单向光信号处理单元，并将来自单向光信号处理单元的光信号的流在顺时针和逆时针方向上分开。 双向波分复用光通信可以通过使用现有的用于单向光通信的光传输装置统一单向传输的光信号的传输路由（流）。