-
公开(公告)号：US4614230A
公开(公告)日：1986-09-30
申请号：US582708
申请日：1984-02-23
申请人： Kiyoshi Sakuma , Tetsuji Okada , Yu Seshimo , Kazuhiro Maruyama , Kisuke Yamazaki , Yuichi Akiyama
发明人： Kiyoshi Sakuma , Tetsuji Okada , Yu Seshimo , Kazuhiro Maruyama , Kisuke Yamazaki , Yuichi Akiyama
CPC分类号： F28F1/325 , Y10S165/503
摘要： A plate-fin-tube type heat exchanger is constructed with a multitude of plate fins juxtaposed one another and a plurality of heat transmitting tubes passing through said plate fins and being held thereby. A plurality of cut and raised pieces are formed to intersect orthogonally with the air flowing direction at both front and rear surfaces of said plate fins with a certain space interval among them in the air flowing direction and at a location between the adjacent heat transmitting tubes arranged in the longitudinal direction of said plate fins, and then the edge portion on both sides of each cut and raised piece is re-bent in the direction opposite to the lifting direction of said piece and in substantially parallel with the surface of said plate fin so that the cross-section of said cut and raised piece may assume a sloping form in the direction of the air flow and that fin base plate portion may be present between the adjacent cut and raised pieces in parallel with the air flow.
摘要翻译： 板翅式热交换器被构造成具有彼此并置的多个板翅片和穿过所述板翅片并由此保持的多个传热管。 形成有多个切片和凸起部，它们沿着空气流动方向和相邻的传热管之间的位置在所述板翅片的前表面和后表面的空气流动方向上与其空间间隔一定间隔地交叉设置， 在所述板状翅片的纵向方向上，然后将每个切割和升高件的两侧的边缘部分沿与所述件的提升方向相反的方向重新弯曲并且与所述板状翅片的表面基本平行 所述切割和提升件的横截面可以在空气流动的方向上呈倾斜形式，并且翅片基板部分可以与空气流平行地存在于相邻的切割和凸起部件之间。
-
公开(公告)号：US08582981B2
公开(公告)日：2013-11-12
申请号：US12013857
申请日：2008-01-14
IPC分类号： H04B10/00
CPC分类号： H04B10/5053 , H04B10/50 , H04B10/50575
摘要： The disclosed optical transmitter and control method include performing phase modulation of a light propagating through a corresponding optical path in accordance with a data signal, supplying bias voltages for regulating an operating point of each of phase modulation performed, imparting a predetermined phase difference, supplying bias voltages for phase difference regulation and coupling lights output from the corresponding optical paths. The optical transmitter includes superimposing a pilot signal on either one of bias voltages where the pilot signal has a frequency lower than a frequency of a bit rate of the data signal, and performing a feedback control in accordance with a result of monitoring.
摘要翻译： 所公开的光发射机和控制方法包括根据数据信号执行通过对应的光路传播的光的相位调制，提供用于调节执行的每个相位调制的工作点的偏置电压，赋予预定的相位差，提供偏置 用于从相应光路输出的相位差调节和耦合光的电压。 光发射机包括将导频信号叠加在导频信号的频率低于数据信号的比特率的频率的偏置电压中的任一个上，并且根据监视的结果进行反馈控制。
-
公开(公告)号：US08249464B2
公开(公告)日：2012-08-21
申请号：US12719258
申请日：2010-03-08
CPC分类号： H04B10/614 , H04B10/60 , H04B10/63
摘要： In-phase signal light and quadrature-phase signal light obtained by mixing input light and local light with each other are converted into digital signals. The quality of a signal to be received is monitored with reference to information obtained through digital signal processing, and the power ratio between the input signal light and the local light that are to be mixed with each other are controlled on the basis of the result of the monitoring.
摘要翻译： 通过将输入光和局部光彼此混合而获得的同相信号光和正交相位信号光被转换为数字信号。 参照通过数字信号处理获得的信息来监视要接收的信号的质量，并且基于将要混合的输入信号光和本地光之间的功率比来控制 监控。
-
公开(公告)号：US07936998B2
公开(公告)日：2011-05-03
申请号：US12640862
申请日：2009-12-17
申请人： Yuichi Akiyama
发明人： Yuichi Akiyama
IPC分类号： H04B10/04
CPC分类号： H04B10/50572 , G02F1/2255 , H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/50575 , H04B10/50577 , H04B10/5162 , H04B10/5561
摘要： An optical DQPSK modulator comprises a pair of phase modulators. Each of the pair of the phase modulators is provided with first and second driving signals. The first and second driving signals are amplified by first and second amplifiers, respectively. An RZ intensity modulator generates an optical RZ-DQPSK signal from an optical DQPSK signal output from the optical DQPSK modulator. A photodetector generates a monitor signal from the optical RZ-DQPSK signal. A gain adjuster unit adjusts the gains of the first and second amplifiers so as to minimize the power of the monitor signal.
摘要翻译： 光DQPSK调制器包括一对相位调制器。 一对相位调制器中的每一个具有第一和第二驱动信号。 第一和第二驱动信号分别由第一和第二放大器放大。 RZ强度调制器从光DQPSK调制器输出的光DQPSK信号产生光RZ-DQPSK信号。 光电检测器从光学RZ-DQPSK信号产生监视信号。 增益调节单元调节第一和第二放大器的增益，以便最小化监视信号的功率。
-
5.发明授权公开(公告)号：US07873283B2
公开(公告)日：2011-01-18
申请号：US10662394
申请日：2003-09-16
申请人： Yuichi Akiyama , Takafumi Terahara
发明人： Yuichi Akiyama , Takafumi Terahara
CPC分类号： H04B10/077 , H04B10/07955
摘要： The invention aims to provide a monitoring method that can measure an optical SNR in an ultra high speed optical transmission system with high accuracy, and an optical transmission system using the same. To this end, in the optical transmission system to which the monitoring method of the present invention is applied, the degree of polarization of an optical signal transmitted from an optical transmission apparatus to an optical receiving apparatus via an optical transmission path is measured by a DOP measuring device, and an optical SNR of the optical signal is determined by an optical SNR calculation circuit based on a measured value of the degree of polarization.
摘要翻译： 本发明旨在提供一种能够高精度地测量超高速光传输系统中的光学SNR的监视方法，以及使用该方法的光传输系统。 为此，在应用本发明的监视方法的光传输系统中，通过DOP测量从光传输装置发送到光接收装置的光信号的偏振度 测量装置和光信号的光学SNR由光学SNR计算电路基于偏振度的测量值确定。
-
公开(公告)号：US07773283B2
公开(公告)日：2010-08-10
申请号：US12058406
申请日：2008-03-28
IPC分类号： G02B26/00
CPC分类号： G02F1/2255 , G02F1/0123 , H04B10/505 , H04B10/5162 , H04B10/5167 , H04B10/5561
摘要： According to an aspect of an embodiment, an optical modulation device includes a Mach-Zehnder modulator and a controller. The Mach-Zehnder modulator is supplied a drive signal and a bias voltage. The Mach-Zehnder modulator modulates inputted light on the bases of the drive signal and the bias voltage. The drive signal selectively is superimposes a predetermined frequency signal. The bias voltage selectively is superimposes the predetermined frequency signal. The controller selects a superimposing target which is the drive signal or the bias voltage so as to change modulation formats.
摘要翻译： 根据实施例的一个方面，光调制装置包括马赫 - 曾德调制器和控制器。 马赫曾德尔调制器提供驱动信号和偏置电压。 Mach-Zehnder调制器根据驱动信号和偏置电压调制输入的光。 驱动信号选择性地叠加预定的频率信号。 选择性地将偏置电压叠加在预定频率信号上。 控制器选择作为驱动信号或偏置电压的叠加目标，以便改变调制格式。
-
公开(公告)号：US07720383B2
公开(公告)日：2010-05-18
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： H04J14/02
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，并选择性地从第二至第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到第一个WSS和第二个WSS的其他路由。 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：US20100067914A1
公开(公告)日：2010-03-18
申请号：US12585156
申请日：2009-09-04
申请人： Toshiki Tanaka , Yuichi Akiyama , Masahiro Yuki , Hideyuki Miyata
发明人： Toshiki Tanaka , Yuichi Akiyama , Masahiro Yuki , Hideyuki Miyata
IPC分类号： H04J14/08
CPC分类号： H04J14/06 , H04B10/5053 , H04B10/5057 , H04B10/532 , H04B10/58
摘要： The polarization multiplexed light transmitter takes out a part of a polarization multiplexed light to be transmitted as a monitor light; makes orthogonal polarization components contained in the monitor light to interfere with each other, to generate a polarization interfering light; converts the polarization interfering light into an electric signal; measures the power of an alternate current component contained in the electric signal after eliminating a direct current component thereof; and feedback controls delay amount varying sections so that an inter-polarized channel delay time judged based on a change in the measured power reaches a predetermined value. Thus, the delay time between the orthogonal polarization components in the polarization multiplexed light can be varied flexibly at a high speed with a simple configuration, and thus, it becomes possible to suppress transmission characteristics degradation of the polarization multiplexed light due to a change in system state.
摘要翻译： 偏振复用光发射器取出作为监视光发射的偏振复用光的一部分; 使包含在监视光中的正交偏振分量彼此干涉，以产生偏振干涉光; 将偏振干涉光转换为电信号; 在消除其直流分量之后测量电信号中包含的交流分量的功率; 并且反馈控制延迟量变化部分，使得基于测量功率的变化判断的极化间通道延迟时间达到预定值。 因此，通过简单的结构，偏振复用光中的正交偏振分量之间的延迟时间可以以高速度灵活地变化，因此可以抑制由于系统变化引起的偏振复用光的传输特性的劣化 州。
-
9.发明申请公开(公告)号：US20090226165A1
公开(公告)日：2009-09-10
申请号：US12397755
申请日：2009-03-04
申请人： Toshiki Tanaka , Yuichi Akiyama
发明人： Toshiki Tanaka , Yuichi Akiyama
CPC分类号： H04B10/6971
摘要： An apparatus includes an oscillator circuit configured to generate a certain oscillation signal, an adder configured to add the oscillation signal to the tap coefficient of any of one or more taps of the transversal filter, a signal-quality measurer configured to measure a signal quality of a signal output from the transversal filter, and a tap-coefficient adjuster configured to control the value of the tap coefficient so that an optimal amount of shift in the signal quality of the output signal is achieved when the oscillation signal is added to the tap coefficient.
摘要翻译： 一种装置，包括：振荡器电路，被配置为产生一定的振荡信号;加法器，被配置为将所述振荡信号加到所述横向滤波器的一个或多个抽头的抽头系数中;信号质量测量器，被配置为测量所述振荡信号的信号质量 从横向滤波器输出的信号，以及抽头系数调节器，其被配置为控制抽头系数的值，使得当将振荡信号加到抽头系数时，实现输出信号的信号质量的最佳偏移量 。
-
公开(公告)号：US07505414B2
公开(公告)日：2009-03-17
申请号：US10992829
申请日：2004-11-22
IPC分类号： H04L12/28
CPC分类号： H04L41/145
摘要： Linear networks are divided into a plurality of regeneration repeating sections which have nodes having regeneration repeaters arranged therein at both ends, devices such as linear repeaters or OADMs are arranged at the nodes positioned in the regeneration repeating sections, a plurality of assumed paths assumed as a result of arranging the devices are extracted in the regeneration repeating sections, and transmission permission/inhibition is determined transmission permission/inhibition is displayed to allow a user to perform settings again.
摘要翻译： 线性网络被分成多个再生重复部分，其具有在其两端布置有再生中继器的节点，诸如线性中继器或OADM的设备被布置在位于再生重复部分中的节点处，多个假定路径被假定为 在再生重复部分中抽出装置的结果，对每个假设路径确定发送允许/禁止，然后显示所确定的发送允许/禁止以允许用户再次执行设置。
-
-
-
-
-
-
-
-
-
搜索结果
78 条记录 (耗时 0.041 秒)
