公开(公告)号：US08818190B2

公开(公告)日：2014-08-26

申请号：US13396174

申请日：2012-02-14

申请人： Yukio Hayashi ,  Kenro Sekine ,  Yoshiyuki Niwa ,  Shuuji Furumoto

发明人： Yukio Hayashi ,  Kenro Sekine ,  Yoshiyuki Niwa ,  Shuuji Furumoto

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

CPC分类号： H04B10/07955 ,  H04J14/0221 ,  H04J14/0257 ,  H04J14/0275 ,  H04J14/0279 ,  H04J14/0282 ,  H04J14/0283 ,  H04J14/0284

摘要： An embodiment of the invention is an optical node configured to transmit/receive a wavelength-division-multiplexed signal. An optical monitoring unit monitors power levels of the wavelength-division-multiplexed signal on a wavelength-by-wavelength basis to acquire wavelength-by-wavelength power level values of the optical signals. A comparison arithmetic unit performs a comparison between each of the acquired wavelength-by-wavelength power level values of the optical signals, and a predetermined upper limit value and a predetermined lower limit value. A target value calculation unit determines target values of power levels at wavelengths whose acquired power level values exceed the upper limit value to be values between a center value and the upper limit value, and determines target values of power levels at wavelengths whose acquired power level values fall below the lower limit value to be values between the center value and the lower limit value.

摘要翻译： 本发明的实施例是被配置为发送/接收波分复用信号的光节点。 光监视单元以波长为单位监视波分复用信号的功率电平，以获得光信号的波长的功率电平值。 比较运算单元对获取的光信号的波长功率电平值和预定的上限值和规定的下限值进行比较。 目标值计算单元在获取的功率电平值超过上限值的波长处确定作为中心值和上限值之间的值的功率电平的目标值，并且在获得的功率电平值的波长上确定功率电平的目标值 低于下限值，为中心值与下限值之间的值。

公开(公告)号：US20110164873A1

公开(公告)日：2011-07-07

申请号：US12983718

申请日：2011-01-03

申请人： YUKIO HAYASHI ,  Kenro Sekine ,  Chanthan Winh

发明人： YUKIO HAYASHI ,  Kenro Sekine ,  Chanthan Winh

IPC分类号： H04B10/08

CPC分类号： H04B10/0797 ,  H04B10/03

摘要： An output light intensity monitor unit of an optical repeater monitors an output light of an output point of the optical repeater. A reflected light intensity monitor unit monitors a reflected light returning from an optical fiber to the output point, An optical fiber transmission line loss from the apparatus output point to an optical fiber open end and a light intensity emitted from the open end are estimated from a monitored reflected light intensity, and a reflection abnormality detection threshold for detecting the reflection abnormality if the light intensity emitted from the open end exceeds a reference light intensity is prescribed. An output light intensity lowering amount and a reflection abnormality recovery threshold are prescribed from an output light intensity monitored at the apparatus output point and the reflected light intensity so that an open end output light intensity may be lowered to the reference light intensity.

摘要翻译： 光中继器的输出光强度监视单元监视光中继器的输出点的输出光。 反射光强度监视器单元监视从光纤返回到输出点的反射光。从设备输出点到光纤开口端的光纤传输线损耗和从开路端发射的光强度从 以及如果从开口端发射的光强度超过参考光强度，则规定用于检测反射异常的反射异常检测阈值。 从设备输出点监测的输出光强度和反射光强度规定输出光强降低量和反射异常恢复阈值，使得开路端输出光强度可以降低到参考光强度。

公开(公告)号：US20110229153A1

公开(公告)日：2011-09-22

申请号：US13121341

申请日：2009-10-05

申请人： Kenro Sekine

发明人： Kenro Sekine

IPC分类号： H04B10/18 ,  H04B10/06

CPC分类号： H04B10/672 ,  H04B10/25133 ,  H04B2210/252

摘要： In an optical receiver of a long-haul high-speed WDM/OADM system, a control technique is provided that can accurately control a variable dispersion compensator with an inexpensive configuration even under strict SNR conditions. Signal reception characteristic data (a bit error rate, a clock extraction result, and a frame synchronization result) is obtained and an optimum dispersion compensation amount of the dispersion compensator is calculated. The signal reception characteristic data is saturated by a high SNR. In the case where desired dispersion control accuracy cannot be obtained, an input level of a photodiode is reduced by controlling an output level of an amplifier or a variable optical attenuator. Further, in a state in which a received SNR is deteriorated, the signal reception characteristic data is obtained and the optimum dispersion compensation amount of the dispersion compensator is calculated again.

摘要翻译： 在长距离高速WDM / OADM系统的光接收机中，提供了即使在严格的SNR条件下也能以廉价的配置精确地控制可变色散补偿器的控制技术。 获得信号接收特性数据（误码率，时钟提取结果和帧同步结果），并计算色散补偿器的最佳色散补偿量。 信号接收特性数据被高SNR饱和。 在不能获得期望的色散控制精度的情况下，通过控制放大器或可变光衰减器的输出电平来降低光电二极管的输入电平。 此外，在接收到的SNR恶化的状态下，获得信号接收特性数据，并且再次计算色散补偿器的最佳色散补偿量。

公开(公告)号：US07526199B2

公开(公告)日：2009-04-28

申请号：US11184996

申请日：2005-07-20

申请人： Kenro Sekine ,  Junya Kosaka ,  Tadashi Matsuoka

发明人： Kenro Sekine ,  Junya Kosaka ,  Tadashi Matsuoka

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

CPC分类号： H04J14/0289 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0279

摘要： An optical transmission apparatus includes a demultiplexer for separating wavelength-division multiplexing light received from a first optical transmission line into signals of different wavelengths to transmit the signals to an outside and a multiplexer for multiplexing signals of different wavelengths received from the outside to transmit multiplexed signals to a second optical transmission line. An input check unit is provided for monitoring a power level of a signal separated by the demultiplexer and for providing an output indicative thereof. An output adjuster is provided for intercepting a signal from the outside so as to inhibit receipt of the signal from the outside by the multiplexer depending on the output of the input check unit.

摘要翻译： 一种光传输装置，包括：解复用器，用于将从第一光传输线接收的波分复用光分离成不同波长的信号以将信号发送到外部;多路复用器，用于复用从外部接收的不同波长的信号，以发送多路复用信号 到第二光传输线。 提供输入检查单元，用于监视由解复用器分离的信号的功率电平并提供指示其的输出。 提供输出调节器，用于截取来自外部的信号，以便根据输入检查单元的输出，禁止多路复用器从外部接收信号。

公开(公告)号：US20050175041A1

公开(公告)日：2005-08-11

申请号：US10888016

申请日：2004-07-12

申请人： Shinya Sasaki ,  Nobuhiko Kikuchi ,  Kenro Sekine

发明人： Shinya Sasaki ,  Nobuhiko Kikuchi ,  Kenro Sekine

IPC分类号： H04B10/00 ,  H04B10/27 ,  H04B10/29 ,  H04J14/00 ,  H04J14/02

CPC分类号： H04J14/0216 ,  H04J14/0212 ,  H04J14/0217

摘要： A problem to be solved in an optical communication system for carrying out bidirectional transmission between communication nodes by wavelength-division-multiplexed optical signals is that a plurality of optical add-drop multiplexers installed in the communication nodes are required for each transmission direction, and therefore, the communication cost is increased. An optical circulator or an optical coupler is arranged at an input/output port of the optical add-drop multiplexer and the wavelength-division-multiplexed optical signals are assembled for each transmission direction, whereby optical signals transmitted bidirectionally can be handled by one optical add-drop multiplexer.

摘要翻译： 用于通过波分复用光信号在通信节点之间进行双向传输的光通信系统中要解决的问题在于，每个传输方向都需要安装在通信节点中的多个光分插复用器，因此 通信成本增加。 在光分插复用器的输入/输出端口处设置光环行器或光耦合器，并且为每个传输方向组合波分复用光信号，由此双向传输的光信号可以通过一个光学加法 - 多路复用器

公开(公告)号：US07653310B2

公开(公告)日：2010-01-26

申请号：US11657004

申请日：2007-01-24

申请人： Kenro Sekine

发明人： Kenro Sekine

IPC分类号： H04B10/12 ,  H04B10/18

CPC分类号： H04J14/0279 ,  H04B10/25133 ,  H04J14/02 ,  H04J14/0212

摘要： A low-cost configuration of, and at the same time to control the variable dispersion compensator at a high speed in a variable dispersion compensator for compensating the wavelength dependent accumulated dispersion resulting from the wavelength dependency of the transmission fiber and fixed dispersion compensator in a long-distance high-speed WDM transmission system. In order to achieve the object mentioned above, the wavelength dependent representative characteristic of the transmission fibers 4-1 . . . n, and the wavelength dependent representative characteristic of the DCFs 13-1 . . . n are recorded and maintained in advance in the dispersion control circuit 5-1 . . . n of the variable dispersion compensator 16, and based on the input of dispersion amount at the representative length of the transmission fiber and the fiber length, the dispersion amount at the representative wavelength of the DCF, the accumulated dispersion amount is computed from the wavelength dependent representative characteristic recorded and maintained in advance, and the dispersion amount of the variable dispersion compensator 16 is determined by taking this as the reference.

摘要翻译： 在可变色散补偿器中以低速成本并且同时控制可变色散补偿器的低成本配置，用于补偿由传输光纤和固定色散补偿器在长时间内的波长依赖性导致的波长相关累积色散 高速WDM传输系统。 为了实现上述目的，传输光纤的波长依赖性代表性特征4-1。 。 。 n和DCF 13-1的波长相关代表性特性。 。 。 n在色散控制电路5-1中预先记录并保持。 。 。 n，并且基于传输光纤的代表长度的色散量的输入和光纤长度，DCF的代表性波长处的色散量，从波长依赖性计算累积色散量 代表性特征预先记录并保持，并且通过将其作为参考来确定可变色散补偿器16的色散量。

公开(公告)号：US20090092401A1

公开(公告)日：2009-04-09

申请号：US12222574

申请日：2008-08-12

申请人： Kenro Sekine ,  Nobuhiko Kikuchi ,  Shinya Sasaki

发明人： Kenro Sekine ,  Nobuhiko Kikuchi ,  Shinya Sasaki

IPC分类号： H04B10/12 ,  H04B10/04

CPC分类号： G02F1/0123 ,  G02F1/2255 ,  G02F2001/212 ,  H04B10/5053 ,  H04B10/50577 ,  H04B10/50595 ,  H04L27/2071 ,  H04L27/2096

摘要： In a quaternary phase modulator including two phase modulators disposed in parallel and a phase adjuster that adjusts a phase difference when the outputs of the two phase modulators are combined, there are provided a second light source that introduces light propagated in a backward direction, a first controller that controls the bias of the two phase modulators so that the intensity of the backward light is a minimum on the input side of the quaternary phase modulator, and a second controller that controls the bias of the phase adjuster so that a result monitored by a photodiode having a bandwidth not exceeding the bit rate on the output side of the quaternary phase modulator is a minimum, the first controller being implemented after the second controller is implemented.

摘要翻译： 在包括并联设置的两个相位调制器和在两个相位调制器的输出被组合时调节相位差的相位调节器的四元相位调制器中，提供了一种引入沿后向传播的光的第二光源，第一 控制器，其控制两个相位调制器的偏置，使得反向光的强度在四元相位调制器的输入侧是最小的;以及第二控制器，其控制相位调节器的偏置，使得由a 具有不超过四元相位调制器的输出侧的比特率的带宽的光电二极管是最小的，第一控制器在实现第二控制器之后被实现。

公开(公告)号：US07302183B2

公开(公告)日：2007-11-27

申请号：US10345262

申请日：2003-01-16

申请人： Kenro Sekine

发明人： Kenro Sekine

IPC分类号： H04J14/02 ,  H04B10/00

CPC分类号： H04B10/296 ,  H04B10/0775 ,  H04B10/25073 ,  H04J14/0221

摘要： In the variable gain compensating apparatus, input power of optical amplifiers employed in respective optical repeaters is monitored, and the monitored input power is transferred to a down-stream side by using supervisor (SV) light. In a repeater equipped with a variable gain tilt compensator, input power monitor information of the optical amplifiers employed in the respective repeaters provided on the upper stream side is acquired from a supervisor signal. While utilizing a linear relationship established between a gain tilt of an optical amplifier and input power of the optical amplifier, the acquired input power monitor information is compared with a reference power value so as to calculate gain tilt amounts of the respective optical amplifiers. Then, the optimum gain tilt compensation amount of the variable gain tilt compensator is determined based upon the calculated gain tilt amounts.

摘要翻译： 在可变增益补偿装置中，监视在各个光中继器中使用的光放大器的输入功率，并且通过使用监控器（SV）光将所监视的输入功率传送到下游侧。 在配备有可变增益倾斜补偿器的中继器中，从监视器信号获取在上游侧设置的各个中继器中采用的光放大器的输入功率监视信息。 在利用在光放大器的增益倾斜与光放大器的输入功率之间建立的线性关系的同时，将所获取的输入功率监视信息与参考功率值进行比较，以计算各个光放大器的增益倾斜量。 然后，基于计算出的增益倾斜量来确定可变增益倾斜补偿器的最佳增益倾斜补偿量。

公开(公告)号：US07991290B2

公开(公告)日：2011-08-02

申请号：US11602356

申请日：2006-11-21

申请人： Ken'ichi Tanaka ,  Masato Shishikura ,  Kenro Sekine ,  Toshiki Sugawara ,  Yasunobu Matsuoka

发明人： Ken'ichi Tanaka ,  Masato Shishikura ,  Kenro Sekine ,  Toshiki Sugawara ,  Yasunobu Matsuoka

IPC分类号： H04J14/02 ,  H04B10/00

CPC分类号： G02B7/1805 ,  G02B6/4246 ,  H04B10/40

摘要： To provide an optical transceiver module comprising an optical prism for optical communications which has mounting portions, a light emitting portion, light receiving portions, a substrate and a sub-mount that are used as the basis of the optical transceiver module, whose configuration is compact with reduced components which are accurately mounted.A sub-mount is provided on the substrate. The composite optical prism is formed with an optical lens provided with mounting supports and a wavelength division film in an integrated fashion. By using marks on the sub-mount for alignment, the composite optical prism can be mounted accurately on the sub-mount. In addition, the light receiving portions and the light emitting portion can be mounted accurately by using marks for alignment provided on the substrate and the sub-mount.

摘要翻译： 为了提供光收发器模块，其包括用于光通信的光学棱镜，其具有安装部分，发光部分，光接收部分，基板和子安装件，其用作光收发器模块的基础，其构造紧凑 具有精确安装的减少的部件。 在基板上设有副安装座。 复合光学棱镜以一体化的方式形成有设置有安装支架和波长分隔膜的光学透镜。 通过使用子座上的标记进行对准，可以将复合光学棱镜精确地安装在子座上。 此外，通过使用设置在基板和副底座上的对准标记，可以准确地安装光接收部分和发光部分。

公开(公告)号：US07457542B2

公开(公告)日：2008-11-25

申请号：US11335525

申请日：2006-01-20

申请人： Kenro Sekine ,  Nobuaki Tajimi

发明人： Kenro Sekine ,  Nobuaki Tajimi

IPC分类号： H04J14/00

CPC分类号： H04J3/1694 ,  H04B10/2507 ,  H04B10/272 ,  H04L12/66 ,  H04L25/03038 ,  H04L2025/03356 ,  H04L2025/03477 ,  H04L2025/03668

摘要： An optical access network system having a function of correcting upstream signal waveform distortions occurring in the PON section, wherein a central office side apparatus comprises a main controller to notify each subscriber connection apparatus of a transmission grant period, an equalizer of a tap gain adaptive control type to correct waveform distortions of signals received from the subscriber connection apparatuses, an equalizer controller, and a parameter table for storing, for each subscriber connection apparatus, the initial values of tap gains to be set for the equalizer. The main controller issues a switchover request for switching the equalization characteristic to the equalizer controller each time notifying a subscriber connection apparatus of a transmission grant period, and the equalizer controller retrieves the initial values of the tap gains for the subscriber connection apparatus from the parameter table in response to the switchover request, and sets these values to the equalizer.

摘要翻译： 具有校正PON部分中出现的上行信号波形失真的功能的光接入网络系统，其中，中心局侧设备包括：主控制器，用于向每个用户连接设备通知传输授权周期;抽头增益自适应控制的均衡器 类型以校正从用户连接装置接收的信号的波形失真，均衡器控制器和参数表，用于为每个用户连接装置存储要为均衡器设置的抽头增益的初始值。 主控制器每当向用户连接装置通知发送授权周期时发出将均衡特性切换到均衡器的切换请求，并且均衡器控制器从参数表中检索用户连接装置的抽头增益的初始值 响应切换请求，并将这些值设置为均衡器。