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41. 发明授权

US08867927B2 Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them 有权
标题翻译：光发送装置，光接收装置和包括它们的光通信系统
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。

42. 发明授权

US08170416B2 Optical switching device 有权
标题翻译：光开关器件
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。

43. 发明授权

US08155517B2 Optical packet switching apparatus 有权
标题翻译：光分组交换设备
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。

44. 发明授权

US07643751B2 Network managing apparatus, optical add/drop multiplexer, and network managing method 有权
标题翻译：网络管理装置，光分插复用器和网络管理方法
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。

45. 发明申请

US20090297162A1 Optical communication base station, optical signal conversion apparatus, and optical signal conversion method 有权
标题翻译：光通信基站，光信号转换装置和光信号转换方法
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。

46. 发明申请

US20090185804A1 Optical access network system 审中-公开
标题翻译：光接入网系统
公开(公告)号：US20090185804A1
公开(公告)日：2009-07-23
申请号：US12292337
申请日：2008-11-17
申请人： Yutaka Kai , Yasuhiko Aoki
发明人： Yutaka Kai , Yasuhiko Aoki
IPC分类号： H04J14/00
CPC分类号： H04J14/0282 , H04J14/0226 , H04J14/0227 , H04J14/0232 , H04J14/0238 , H04J14/0246 , H04J14/0247 , H04J14/025 , H04J14/0252 , H04J14/0257
摘要： In an optical access network system in which a relay station receives a wavelength multiplexed and time-division multiplexed optical signal (WDM optical signal) from an optical network, and the relay station transmits optical signals having specified wavelengths to subscriber units, the relay station demultiplexes the WDM optical signal into a plurality of groups with one group having a plurality of optical signals having a fixed wavelength interval between signals, then divides the optical signals of each group into k branches (k is the number of subscriber units) and inputs the signals to optical switches, and by turning ON/OFF the optical switches such that they are spaced in time, inputs the branched optical signals to the respective specified subscribers units.
摘要翻译：在中继站从光网络接收波分复用光时分复用光信号（WDM光信号）的光接入网系统中，中继站向用户单元发送具有特定波长的光信号的情况下，中继站多路复用将WDM光信号转换成具有一组具有多个信号之间的固定波长间隔的多个光信号的多个组，然后将每个组的光信号划分为k个分支（k是用户单元的数量），并输入信号并且通过将光开关的ON / OFF时间间隔开来，将分支的光信号输入到各个指定的订户单元。

47. 发明申请

US20090058534A1 Non-inverting amplifier circuit and optical switch driver circuit 有权
标题翻译：同相放大器电路和光开关驱动电路
公开(公告)号：US20090058534A1
公开(公告)日：2009-03-05
申请号：US12230260
申请日：2008-08-26
申请人： Tomohiro UENO , Masaji Noguchi , Yutaka Kai , Setsuo Yoshida
发明人： Tomohiro UENO , Masaji Noguchi , Yutaka Kai , Setsuo Yoshida
IPC分类号： H03F3/04
CPC分类号： H03F1/565
摘要： A non-inverting amplifier circuit is disclosed that includes an operational amplifier and a preemphasis circuit connected between the operational amplifier and a signal source. The preemphasis circuit is configured to compensate for the internal delay of a load connected to the output of the operational amplifier by emphasizing a high-frequency component of a signal fed from the signal source.
摘要翻译：公开了一种非反相放大器电路，其包括连接在运算放大器和信号源之间的运算放大器和预加重电路。预加重电路被配置为通过强调从信号源馈送的信号的高频分量来补偿连接到运算放大器的输出的负载的内部延迟。

48. 发明授权

US07408700B2 Optical switch, and method for controlling drive voltage thereof 有权
标题翻译：光开关及其驱动电压的控制方法
公开(公告)号：US07408700B2
公开(公告)日：2008-08-05
申请号：US11384288
申请日：2006-03-21
申请人： Yutaka Kai , Setsuo Yoshida
发明人： Yutaka Kai , Setsuo Yoshida
IPC分类号： G02F1/29
CPC分类号： G02F1/29 , G02F1/31 , G02F2001/311
摘要： An optical switch which minimizes losses in the power of output light while enabling deflection of light within a range of comparatively large deflection angles used for setting switching among output ports. The optical switch is configured to have a first light deflection element deflecting the input light at an angle appropriate to a position of an designated port with an applied first drive voltage; and a second light deflection element finely adjusting a deflection angle of the light output from the first deflection element to the designated port with an applied second drive voltage such that power of light output from the designated port becomes maximum.
摘要翻译：一种光开关，其使输出光功率的损耗最小化，同时能够在用于设置输出端口之间的切换的较大偏转角的范围内偏转光。光开关被配置为具有第一光偏转元件，其以适合于施加的第一驱动电压的指定端口的位置的角度偏转输入光; 以及第二光偏转元件，利用所施加的第二驱动电压，将从所述第一偏转元件输出的光的偏转角度精细地调整到所述指定端口，使得从所述指定端口输出的光的功率变得最大。

49. 发明申请

US20080166121A1 Control system of a multichannel optical switch 审中-公开
标题翻译：多通道光开关控制系统
公开(公告)号：US20080166121A1
公开(公告)日：2008-07-10
申请号：US11785658
申请日：2007-04-19
申请人： Takashi Nakano , Tomohiro Ueno , Yutaka Kai , Yutaka Takita
发明人： Takashi Nakano , Tomohiro Ueno , Yutaka Kai , Yutaka Takita
IPC分类号： H04J14/00
CPC分类号： H04Q11/0005 , H04Q2011/0024 , H04Q2011/0039 , H04Q2011/0043 , H04Q2011/0058
摘要： A control system of a multichannel optical switch suppressing the generation of a leakage current in a multichannel, highly integrated EO-SW to enable stable operation, that is, a control system of a multichannel optical switch using devices having an EO effect wherein an electrode voltage application device applies voltage for switching optical switch devices based on switching data when judging that an elapsed time from when the switching data has started to be output from a path switching instruction device is shorter than a predetermined counted time threshold and the electrode voltage application device applies voltage for switching based on the switching data only when a switching judgment processing device judges that predetermined switching conditions have been met when judging that the elapsed time has been exceeded and does not apply voltage for switching to the switch devices and sends a switching failure notice to a path switching instruction device from the switching judgment processing device when judging that predetermined switching conditions have not been met.
摘要翻译：一种多通道光开关的控制系统，其抑制在多通道高度集成的EO-SW中产生泄漏电流以实现稳定操作，即使用具有EO效应的器件的多通道光开关的控制系统，其中电极电压当判断从开关数据开始到从路径切换指令装置输出的经过时间短于预定计数时间阈值时，应用装置基于切换数据施加用于切换光开关装置的电压，并且电极电压施加装置仅当切换判断处理装置在判定已经超过经过时间的情况下判断为满足规定的切换条件而不施加用于切换到切换装置的电压的情况下，基于切换数据进行切换的电压，并将切换故障通知发送到来自切换判断的路径切换指令装置在判定未满足规定的切换条件的情况下进行处理。

50. 发明申请

US20060221432A1 Optical switch, and method for controlling drive voltage thereof 有权
标题翻译：光开关及其驱动电压的控制方法
公开(公告)号：US20060221432A1
公开(公告)日：2006-10-05
申请号：US11384288
申请日：2006-03-21
申请人： Yutaka Kai , Setsuo Yoshida
发明人： Yutaka Kai , Setsuo Yoshida
IPC分类号： G02F1/29
CPC分类号： G02F1/29 , G02F1/31 , G02F2001/311
摘要： An optical switch which minimizes losses in the power of output light while enabling deflection of light within a range of comparatively large deflection angles used for setting switching among output ports. The optical switch is configured to have a first light deflection element deflecting the input light at an angle appropriate to a position of an designated port with an applied first drive voltage; and a second light deflection element finely adjusting a deflection angle of the light output from the first deflection element to the designated port with an applied second drive voltage such that power of light output from the designated port becomes maximum.
摘要翻译：一种光开关，其使输出光功率的损耗最小化，同时能够在用于设置输出端口之间的切换的较大偏转角的范围内偏转光。光开关被配置为具有第一光偏转元件，其以适合于施加的第一驱动电压的指定端口的位置的角度偏转输入光; 以及第二光偏转元件，利用所施加的第二驱动电压，将从所述第一偏转元件输出的光的偏转角度精细地调整到所述指定端口，使得从所述指定端口输出的光的功率变得最大。

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