公开(公告)号：US07400830B2

公开(公告)日：2008-07-15

申请号：US10806330

申请日：2004-03-23

申请人： Kenichi Torii ,  Takao Naito ,  Hiroshi Nakamoto ,  Toru Katagiri

发明人： Kenichi Torii ,  Takao Naito ,  Hiroshi Nakamoto ,  Toru Katagiri

IPC分类号： H04B10/08

CPC分类号： H04B10/07953

摘要： The present invention has an object to provide a technology for monitoring the quality of a WDM signal light, capable of quickly and accurately judging an occurrence of quality deterioration of signal light and a deterioration factor thereof. To this end, according to a quality monitoring apparatus of WDM signal light of the present invention, a part of the WDM signal light being propagated through an optical transmission path is branched as a monitor light, a signal light of one wavelength contained in the monitor light is selected as a channel to be measured. Then, the frequency of occurrences of bit error for the channel to be measured is repeatedly measured for a plurality of times, and whether or not the signal quality is deteriorated is judged, together with the deterioration factor based on the measurement results, and a control signal light for adjusting the signal light power according to the judgment result is transmitted to the optical transmission path, to achieve the improvement of a characteristic of the WDM signal light.

摘要翻译： 本发明的目的是提供一种用于监视WDM信号光的质量的技术，其能够快速且准确地判断信号光的质量劣化的发生及其劣化因素。 为此，根据本发明的WDM信号光的质量监视装置，通过光传输路径传播的WDM信号光的一部分被分支为监视光，监视器中包含一个波长的信号光 选择光作为待测量的通道。 然后，重复地测量要测量的通道的位错误的发生频率，并且判断信号质量是否劣化，以及基于测量结果的劣化因子以及控制 将根据判断结果调整信号光功率的信号光发送到光传输路径，以实现WDM信号光的特性的提高。

公开(公告)号：US20070166043A1

公开(公告)日：2007-07-19

申请号：US11620144

申请日：2007-01-05

申请人： Martin Bouda ,  Takao Naito

发明人： Martin Bouda ,  Takao Naito

IPC分类号： H04B10/12

CPC分类号： H04J14/0226 ,  H04B10/66 ,  H04J3/0682 ,  H04J14/0227 ,  H04J14/0232 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0282 ,  H04J14/0289 ,  H04J14/0297 ,  H04J14/0298 ,  H04Q11/0067 ,  H04Q11/0071 ,  H04Q2011/0069

摘要： A method is provided for increasing downstream bandwidth in an optical network that includes providing a downstream terminal comprising a digital output path and an analog output path. The method also includes receiving a signal comprising at least one wavelength at the downstream terminal. The method further includes selectively processing the signal at the downstream terminal. The signal is selectively processed at the downstream terminal by processing the signal on the analog output path if the signal comprises analog video data and processing the signal on the digital output path if the signal comprises data to be converted to a digital bit stream.

摘要翻译： 提供了一种用于增加光网络中的下行带宽的方法，其包括提供包括数字输出路径和模拟输出路径的下游终端。 该方法还包括在下游终端接收包括至少一个波长的信号。 该方法还包括在下游终端处选择性地处理该信号。 如果信号包括模拟视频数据并在数字输出路径上处理信号，如果信号包括要转换为数字位流的数据，则通过处理模拟输出路径上的信号，在下游端口选择性地处理该信号。

公开(公告)号：US07209654B2

公开(公告)日：2007-04-24

申请号：US09962116

申请日：2001-09-26

申请人： Toshiki Tanaka ,  Takao Naito

发明人： Toshiki Tanaka ,  Takao Naito

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

CPC分类号： H04B10/2916 ,  H04B10/25253

摘要： A plurality of optical repeaters are provided on a transmission line between an optical transmitting station and an optical receiving station. A combined transmission line section is provided between optical repeaters. The combined transmission line section is composed of the first optical fiber, which is a positive-dispersion fiber, and the second optical fiber, which is a negative-dispersion fiber. Signal light is inputted to the first optical fiber in each combined transmission line section. Each optical repeater inputs pump light to the second optical fiber.

摘要翻译： 在光发送站和光接收站之间的传输线上设置多个光中继器。 在光中继器之间提供组合传输线部分。 组合传输线部分由作为正色散光纤的第一光纤和作为负色散光纤的第二光纤组成。 在每个组合的传输线路段中，信号光被输入到第一光纤。 每个光中继器将泵浦光输入到第二光纤。

公开(公告)号：US07034991B2

公开(公告)日：2006-04-25

申请号：US09970982

申请日：2001-10-05

申请人： Takao Naito ,  Toshiki Tanaka

发明人： Takao Naito ,  Toshiki Tanaka

IPC分类号： H01S3/00

CPC分类号： H04B10/2918 ,  H04B10/2525 ,  H04B10/2916 ,  H04B2210/003

摘要： An optical transmission line including first, second and third fibers so that an optical signal travels through the first, second and third fibers, in order. The first fiber has a positive dispersion for a wavelength of the optical signal. The second fiber has a negative dispersion for the wavelength of the optical signal and a mode field diameter smaller than a mode field diameter of the first fiber. The third fiber has a mode field diameter smaller than the mode field diameter of the second fiber. Pump light is provided to the third fiber so that Raman amplification occurs in the transmission line.

公开(公告)号：US20060039703A1

公开(公告)日：2006-02-23

申请号：US10995179

申请日：2004-11-24

申请人： Toru Katagiri ,  Takao Naito

发明人： Toru Katagiri ,  Takao Naito

IPC分类号： H04B10/12

CPC分类号： H04B10/25133

摘要： The objective of the present invention is to realize a chromatic dispersion compensation method which does not depend on a wavelength path in a photonic network to which a HUB node is applied and its monitoring control. In order to achieve this purpose, the present invention controls a plurality of variable chromatic dispersion compensators arbitrarily disposed in the photonic network based on the measured results of a plurality of chromatic dispersion monitors arbitrarily disposed in the photonic network and wavelength path information kept by the network management system which manages the entire photonic network. Here, the variable chromatic dispersion compensator within the network that should be controlled and the chromatic dispersion compensated quantity thereof are determined based on the measured results of the chromatic dispersion monitor and the wavelength path information kept by NMS.

公开(公告)号：US20060029391A1

公开(公告)日：2006-02-09

申请号：US11038281

申请日：2005-01-21

申请人： Masahiro Yuki ,  Toru Katagiri ,  Takao Naito

发明人： Masahiro Yuki ,  Toru Katagiri ,  Takao Naito

IPC分类号： H04J14/00

CPC分类号： H04J14/0227 ,  H04J14/0221 ,  H04J14/0241 ,  H04J14/0284

摘要： An optical network system enabling confirmation of connection and tracking of wavelength paths at a high speed and a low cost without introducing any special hardware by having a wavelength path monitoring unit in an NMS give temporary change of optical power through a change generating unit to an optical signal S from an optical transmitting/receiving node, by having a change detecting unit confirm that this change of optical power has propagated through an optical transmission line and appeared at each node on the way, and confirming connections and monitoring the wavelength path while confirming the presence of the change.

摘要翻译： 通过在NMS中具有波长路径监视单元，能够以高速和低成本确认波长路径的连接和跟踪而不引入任何特殊硬件的光网络系统通过改变生成单元将光功率暂时改变为光 来自光发送/接收节点的信号S通过使变化检测单元确认光功率的这种变化已经通过光传输线传播并出现在路径上的每个节点处，并确认连接并监测波长路径，同时确认 存在变化。

公开(公告)号：US20050196168A1

公开(公告)日：2005-09-08

申请号：US10873257

申请日：2004-06-23

申请人： Kouichirou Amemiya ,  Takao Naito ,  Toru Katagiri ,  Toshiki Tanaka

发明人： Kouichirou Amemiya ,  Takao Naito ,  Toru Katagiri ,  Toshiki Tanaka

IPC分类号： H04J14/00 ,  H04Q11/00

CPC分类号： H04Q11/0062 ,  H04Q11/0071

摘要： An optical connection switching according to the present invention comprises an optical connection switching fabric capable of making a connection between any one of optical input ports and any one of optical output ports, one or more optical transceiving units connected to a part of the optical input/output ports, and a management control unit for controlling the optical connection switching fabric to make a connection between the optical input/output port connected to the optical transceiving unit and the optical input/output port connected to the equipment for acquiring and managing information on the equipment by making a communication with the equipment through the use of the optical transceiving unit. This enables acquiring the information on the equipment having an optical communication interface to be optically connected, thereby automating the connection management of the equipment.

摘要翻译： 根据本发明的光连接交换包括光连接交换结构，其能够在光输入端口和光输出端口中的任一个之间进行连接，一个或多个光收发单元连接到光输入/ 输出端口和管理控制单元，用于控制光连接交换结构，以连接到光收发单元的光输入/输出端口与连接到设备的光输入/输出端口之间的连接，用于获取和管理关于 设备通过使用光收发单元与设备进行通信。 这使得能够获取具有光学连接的光通信接口的设备的信息，从而使设备的连接管理自动化。

公开(公告)号：US06882466B1

公开(公告)日：2005-04-19

申请号：US09634912

申请日：2000-08-09

申请人： Naomasa Shimojoh ,  Takao Naito

发明人： Naomasa Shimojoh ,  Takao Naito

IPC分类号： H01S3/10 ,  G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/094 ,  H01S3/16 ,  H01S3/23 ,  H01S3/30 ,  H04B10/07 ,  H04B10/2525 ,  H04B10/29 ,  H04B10/296 ,  H04J14/00 ,  H04J14/02 ,  H01S3/00

CPC分类号： H04B10/2931 ,  H01S3/06758 ,  H01S3/094042 ,  H01S3/1608 ,  H01S3/2375 ,  H01S3/2383 ,  H01S3/302 ,  H04B10/2916 ,  H04B2210/258

摘要： An optical amplifier is provided for performing amplification of optical signals of two wavelength bands, where deterioration in the optical SN ratio relative to one wavelength band is reduced, with a simple construction which can deal with restrictions on installation space, power consumption and the like. To this end, the present optical amplifier has a C/L band optical amplifying section for amplifying respective optical signals of a C band and an L band, a demultiplexer for demultiplexing output light from the C/L band optical amplifying section into the C band and the L band, an L band optical amplifying section for amplifying L band optical signals which have been demultiplexed by the demultiplexer, and a multiplexer for multiplexing the C band optical signals which have been demultiplexed by the demultiplexer and the L band optical signals which have been amplified by the L band optical amplifying section. The construction is such that a part of excitation light of a 1480 nm band used in the C/L band optical amplifying section is supplied via an input terminal to a Raman amplification producing medium of a transmission path, and Raman amplified L band optical signals are input to the C/L band optical amplifying section.

摘要翻译： 提供一种光放大器，用于执行两个波长带的光信号的放大，其中相对于一个波长带的光SN比的劣化被减少，具有可以解决对安装空间，功耗等的限制的简单结构。 为此，本光放大器具有用于放大C波段和L波段的各个光信号的C / L波段光放大部分，用于将来自C / L波段光放大部分的输出光解复用为C波段的解复用器 L波段，用于放大由解复用器解复用的L波段光信号的L波段光放大部分，以及多路复用器，用于多路复用已由解复用器解复用的C波段光信号和L波段光信号， 被L波段光放大部分放大。 该结构使得在C / L频带光放大部分中使用的1480nm波段的激发光的一部分经由输入端子被提供给传输路径的拉曼放大产生介质，并且拉曼放大的L波段光信号是 输入到C / L频带光放大部分。

公开(公告)号：US20050036790A1

公开(公告)日：2005-02-17

申请号：US10943261

申请日：2004-09-17

申请人： Toshiki Tanaka ,  Takao Naito

发明人： Toshiki Tanaka ,  Takao Naito

IPC分类号： H01S3/094 ,  H01S3/10 ,  H01S3/30 ,  H04B10/077 ,  H04B10/079 ,  H04B10/291 ,  H04B10/02

CPC分类号： H04B10/2916 ,  H01S3/094046 ,  H01S3/1003 ,  H01S3/30 ,  H01S3/302 ,  H04B10/077 ,  H04B10/07955

摘要： A variable optical attenuator for attenuating the signal light is provided in an optical fiber transmission line for transmission of signal light while performing Raman amplification, and the attenuation of the variable optical attenuator is adjusted based on the optical power detected at the reception terminal of the optical fiber transmission line.

摘要翻译： 用于衰减信号光的可变光衰减器设置在用于传输信号光的光纤传输线中，同时执行拉曼放大，并且可变光衰减器的衰减基于在光学器件的接收端检测到的光功率 光纤传输线。

公开(公告)号：US06831777B2

公开(公告)日：2004-12-14

申请号：US09939700

申请日：2001-08-28

申请人： Toshiki Tanaka ,  Takao Naito

发明人： Toshiki Tanaka ,  Takao Naito

IPC分类号： H01S300

CPC分类号： H04B10/294 ,  H04B10/2916 ,  H04B10/2918

摘要： A plurality of Raman amplifiers are positioned on a transmission line over which a multi-wavelength light is transmitted. Each of the Raman amplifiers uses a plurality of pump lights &lgr;1 through &lgr;4. When a fault occurs in a pump light source producing the pump light &lgr;3 in a particular Raman amplifier among the plurality of Raman amplifiers, the power of the pump light &lgr;3 is raised in another or other Raman amplifiers.

摘要翻译： 多个拉曼放大器位于传输多波长光的传输线上。 每个拉曼放大器使用多个泵浦灯λ1至λ4。 当在多个拉曼放大器中产生特定拉曼放大器中的泵浦光λ3的泵浦光源中发生故障时，泵浦光λ3的功率在另一个或其它拉曼放大器中升高。