公开(公告)号：US20100080571A1

公开(公告)日：2010-04-01

申请号：US12494812

申请日：2009-06-30

申请人： Yuichi Akiyama ,  Hideyuki Miyata ,  Takeshi Hoshida

发明人： Yuichi Akiyama ,  Hideyuki Miyata ,  Takeshi Hoshida

IPC分类号： H04B10/04 ,  H04B10/12

CPC分类号： H04B10/54 ,  G02F1/0123 ,  G02F1/0136 ,  H04B10/505 ,  H04B10/532 ,  H04B10/5561 ,  H04J14/06

摘要： An optical signal transmitter includes first and second modulation units, a combiner, and a control unit. The first and second modulation units generate first and second modulated optical signals, respectively. The combiner combines the first and second modulated optical signals to generate a polarization multiplexed optical signal. The control unit controls at least one of the first and second modulation units so that the optical powers of the first and second modulated optical signals become approximately equal to each other.

摘要翻译： 光信号发射机包括第一和第二调制单元，组合器和控制单元。 第一和第二调制单元分别产生第一和第二调制光信号。 组合器组合第一和第二调制光信号以产生偏振复用光信号。 控制单元控制第一和第二调制单元中的至少一个，使得第一和第二调制光信号的光功率彼此近似相等。

公开(公告)号：US07418211B2

公开(公告)日：2008-08-26

申请号：US10793097

申请日：2004-03-05

申请人： Yuichi Akiyama ,  Hiroki Ooi

发明人： Yuichi Akiyama ,  Hiroki Ooi

IPC分类号： H04B10/04

CPC分类号： H04B10/50597 ,  G02F1/0121 ,  G02F1/0123 ,  G02F1/225 ,  G02F2201/16 ,  H04B10/5051 ,  H04B10/50575 ,  H04B10/50577 ,  H04B10/5162 ,  H04B10/58

摘要： An object of the invention is to provide a control system in which the phase shift between drive signals of an optical modulator can be reliably detected and compensated by a simple configuration. To this end, a control apparatus of the invention, for an optical modulator generating a signal light of a CS-RZ modulation system or the like by two LN modulators connected in series, detects the phase shift between drive signals given to the former and latter stage LN modulators, or judges the phase shift between the drive signals based on intensity information of the electric spectrum of the signal light output from the optical modulator, to control the phases of the drive signals so as to minimize the phase shift. As a result, the phase shift between the drive signals can be reliably detected and compensated by an electric circuit with a simple configuration.

摘要翻译： 本发明的目的是提供一种控制系统，其中可以通过简单的配置可靠地检测和补偿光调制器的驱动信号之间的相移。 为此，本发明的控制装置，用于通过串联连接的两个LN调制器产生CS-RZ调制系统等的信号光的光调制器，检测给予前者和后一个的驱动信号之间的相移 或者基于从光调制器输出的信号光的电谱的强度信息来判断驱动信号之间的相移，以控制驱动信号的相位，以使相移最小化。 结果，可以通过具有简单结构的电路可靠地检测和补偿驱动信号之间的相移。

公开(公告)号：US07382979B2

公开(公告)日：2008-06-03

申请号：US11316961

申请日：2005-12-27

申请人： Yuichi Akiyama ,  Takafumi Terahara ,  Takeshi Hoshida ,  Hisao Nakashima

发明人： Yuichi Akiyama ,  Takafumi Terahara ,  Takeshi Hoshida ,  Hisao Nakashima

IPC分类号： H04B10/08 ,  H04B10/12 ,  H04B10/00 ,  H04J14/02

CPC分类号： H04B10/2513

摘要： The present invention discloses a design method of wavelength dispersion compensation of a desired link that is extracted from an optical network, the link including two or more spans, and two or more nodes (N1, N4) that are equipped with an add/drop function, as shown in FIG. 2. All residual dispersion ranges of paths that reach corresponding nodes are adjusted to fall within predetermined tolerable residual dispersion ranges that are set up for all the paths of the link by adjusting wavelength dispersion compensators provided to each of the spans.

摘要翻译： 本发明公开了一种从光网络提取的期望链路的波长色散补偿的设计方法，包括两个或多个跨度的链路，以及两个或更多个节点（N 1，N 4），其配备有添加/ drop功能，如图3所示。 2。 通过调整提供给每个跨度的波长色散补偿器，到达对应节点的路径的所有残余色散范围被调整到落在通过链路的所有路径设置的预定容许残余色散范围内。

公开(公告)号：US20080056715A1

公开(公告)日：2008-03-06

申请号：US11651599

申请日：2007-01-10

申请人： Yuichi Akiyama ,  Takafumi Terahara ,  Hiroki Ooi

发明人： Yuichi Akiyama ,  Takafumi Terahara ,  Hiroki Ooi

IPC分类号： H04J14/00

CPC分类号： H04Q11/0005 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0216 ,  H04J14/0217 ,  H04J14/0219 ,  H04Q2011/0035 ,  H04Q2011/006

摘要： An optical transmission apparatus has a first wavelength selective switch (WSS) for route switching, provided with respect to each route, to selectively output signal light from a first input route to second through Nth output routes and to selectively output signal lights from second through Nth input routes to a first output route, for every wavelength, a second WSS for add and drop, to selectively output a signal light from an add port to the first through Nth output routes via the first WSS for every wavelength, and to selectively output the signal lights from the first through Nth input routes to a drop port via the first WSS for every wavelength, and an optical coupler to multiplex each of the signal lights output from the first WSS to the output routes and each of the signal lights output from the second WSS to the output routes, for every route, and to send multiplexed signal light to a first WSS of an other route, and to branch and supply multiplexed signal light input from said other route to the first WSS and the second WSS. The signal lights input and output by the first WSS and the second WSS are transmitted bidirectionally within a single optical transmission line.

摘要翻译： 光传输装置具有用于路由切换的第一波长选择开关（WSS），其针对每条路线，选择性地将来自第一输入路径的信号光输出到第二至第N输出路径，并选择性地从第二到第N输出信号光 输入到第一输出路线的路由，对于每个波长，第二个用于加和减的WSS，用于经由第一WSS为每个波长选择性地输出来自加法端口的信号光到第一至第N输出路由，并选择性地输出 从第一至第N输入的信号灯经由用于每个波长的第一WSS到达分接口，以及光耦合器，用于将从第一WSS输出的每个信号光复用到输出路径，并且每个信号光从 对于每个路由，将第二WSS发送到输出路由，并将多路复用的信号光发送到另一路由的第一WSS，并分支和提供从sa输入的复用信号光 id其他路由到第一个WSS和第二个WSS。 由第一WSS和第二WSS输入和输出的信号灯在单个光传输线内双向传输。

公开(公告)号：US06728491B1

公开(公告)日：2004-04-27

申请号：US09359112

申请日：1999-07-23

申请人： Hiroki Ooi ,  George Ishikawa ,  Yuichi Akiyama

发明人： Hiroki Ooi ,  George Ishikawa ,  Yuichi Akiyama

IPC分类号： H04B1018

CPC分类号： H04B10/2507 ,  H04B10/2513 ,  H04B10/2569 ,  H04B10/2572

摘要： A dispersion compensation controlling apparatus used in a very high-speed optical communication system adopting optical time division multiplexing system comprises a first specific frequency component detecting unit (2a) detecting a first specific frequency component in a baseband spectrum in a transmission optical signal inputted to a receiving side over a transmission fiber as a transmission line (6a), a first intensity detecting unit (3a) detecting information on an intensity of the first specific frequency component detected by the first specific frequency component detecting unit (2a), and a polarization-mode dispersion controlling unit (220a) controlling a polarization-mode dispersion quantity of the transmission line (6a) such that the intensity of the first specific frequency component detected by the first intensity detecting unit (3a) becomes the maximum, thereby easily detecting and compensating polarization-mode dispersion generated in a high-speed optical signal.

摘要翻译： 在采用光时分多路复用系统的非常高速的光通信系统中使用的色散补偿控制装置包括：第一特定频率分量检测单元（2a），检测输入到第一特定频率分量复用系统的传输光信号的基带频谱中的第一特定频率分量 接收侧通过作为传输线（6a）的传输光纤，检测关于由第一特定频率分量检测单元（2a）检测的第一特定频率分量的强度的信息的第一强度检测单元（3a） 控制所述传输线（6a）的偏振模色散量使得由所述第一强度检测单元（3a）检测到的所述第一特定频率分量的强度变为最大的模式色散控制单元（220a），从而容易地检测和补偿 在高速光信号中产生的偏振模色散。

公开(公告)号：US5982530A

公开(公告)日：1999-11-09

申请号：US245920

申请日：1999-02-08

申请人： Yuichi Akiyama ,  George Ishikawa ,  Hiroki Ooi ,  Shigeki Watanabe

发明人： Yuichi Akiyama ,  George Ishikawa ,  Hiroki Ooi ,  Shigeki Watanabe

IPC分类号： G02F1/015 ,  G01M11/02 ,  G02F1/01 ,  G02F1/025 ,  G02F1/03 ,  G02F1/035 ,  H04B10/07 ,  H04B10/2507 ,  H04B10/2525 ,  H04B10/508 ,  H04B10/516 ,  H04B10/524 ,  H04B10/556 ,  H04B10/564 ,  H04B10/572 ,  H04B10/588 ,  H04B10/61

CPC分类号： H04B10/2525 ,  G02F1/0327 ,  H04B10/25137 ,  G02F2001/212 ,  G02F2203/25 ,  G02F2203/26 ,  H04B2210/252 ,  H04B2210/254

摘要： An apparatus includes a driving voltage generator that generates a pulse driving voltage having a rising edge and a decaying edge. An optical modulator produces a first pulse at the rising edge of the pulse driving voltage and a second pulse at the decaying edge of the pulse driving voltage. Therefore, the first and second pulses are both produced from a single driving pulse voltage. The frequency of the first pulse is determined by the slope of the rising edge of the pulse driving voltage and the frequency of the second pulse is determined by the slope of the decaying edge of the pulse driving voltage. The first and second pulses are transmitted through a transmission line. A detection device detects the first and second pulses after being transmitted through the transmission line. A processor then determines the amount of dispersion in the transmission line by comparing the time interval between the detected first and second pulses to the time interval of the first and second pulses before being transmitted. Generally, the optical modulator is a Mach-Zehnder modulator driven with a pulse driving voltage exceeding the half-wavelength voltage of the modulator.

摘要翻译： 一种装置包括产生具有上升沿和衰减沿的脉冲驱动电压的驱动电压发生器。 光调制器在脉冲驱动电压的上升沿产生第一脉冲，在脉冲驱动电压的衰减沿产生第二脉冲。 因此，第一和第二脉冲都是从单个驱动脉冲电压产生的。 第一脉冲的频率由脉冲驱动电压的上升沿的斜率决定，第二脉冲的频率由脉冲驱动电压的衰减沿的斜率决定。 第一和第二脉冲通过传输线传输。 检测装置在通过传输线传输之后检测第一和第二脉冲。 然后处理器通过将检测到的第一和第二脉冲之间的时间间隔与发送之前的第一和第二脉冲的时间间隔进行比较来确定传输线中的色散量。 通常，光调制器是脉冲驱动电压超过调制器的半波长电压驱动的马赫 - 曾德调制器。

公开(公告)号：US5633537A

公开(公告)日：1997-05-27

申请号：US274717

申请日：1994-07-18

申请人： Yasuhiko Kurata ,  Yuichi Akiyama

发明人： Yasuhiko Kurata ,  Yuichi Akiyama

IPC分类号： B60R16/02 ,  B60R16/023 ,  B60R16/03 ,  H04Q9/00 ,  H04J3/14 ,  H04L12/40

CPC分类号： B60R16/0315 ,  B60R2016/0322

摘要： When it is detected that the state of an electrical component connected to a communication node has not changed in the OFF state of an ignition key switch, it is determined that a vehicle equipped with the multiplex transmission apparatus is in a parking state, and the communication node is forcibly shifted to a sleep state, thereby preventing consumption of battery power due to a dark current supplied to the communication node in the sleep state.

摘要翻译： 当在点火钥匙开关的OFF状态下检测到连接到通信节点的电气部件的状态没有改变时，确定配备有多路传输装置的车辆处于停车状态，并且通信 节点被强制地转移到睡眠状态，从而防止由于在睡眠状态下提供给通信节点的暗电流而导致的电池电力的消耗。

公开(公告)号：US5629495A

公开(公告)日：1997-05-13

申请号：US197342

申请日：1994-02-16

申请人： Tatsuya Sumida ,  Yasuo Matsushita ,  Yuichi Akiyama

发明人： Tatsuya Sumida ,  Yasuo Matsushita ,  Yuichi Akiyama

IPC分类号： F02B77/00 ,  B60R16/02 ,  B60R16/023 ,  H05K5/00 ,  H05K5/02 ,  H05K5/06

CPC分类号： B60R16/0239 ,  H05K5/0039 ,  H05K5/068

摘要： A waterproof box-like casing including, a box-like body having an opening, a lid for closing the opening and having a communication hole, and a bulkhead member for covering the communication hole hermetically. The communication hole provides communication between the inside and outside of the box-like body. Furthermore, the bulkhead member expands volume when the air inside of the waterproof box-like casing expands because of thermal expansion and contracts volume when the air inside of the waterproof box-like casing contracts because of thermal contraction.

摘要翻译： 一种防水盒状壳体，包括具有开口的盒状体，用于封闭开口的盖并具有连通孔，以及用于密封地覆盖连通孔的隔板构件。 连通孔提供盒状体的内部和外部之间的连通。 此外，当防水盒状壳体内部的空气由于热收缩而收缩时，由于热膨胀和收缩体积而使防水盒状壳体内的空气膨胀，因此隔板构件膨胀。