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公开(公告)号：US11705971B2
公开(公告)日：2023-07-18
申请号：US16756200
申请日：2018-08-15
Applicant: NEC Corporation
Inventor： Ryuji Aida , Eduardo Mateo Rodriguez
CPC classification number: H04B10/80 , H04B10/25 , H04Q11/0005
Abstract: An optical transmission apparatus outputs a main signal. An optical transmission apparatus superimposes a monitoring signal on an optical signal and outputs it. A submarine branching apparatus includes a return unit configured to return the monitoring signal received from the optical transmission apparatus and is configured to switch an output destination of the main signal received from the optical transmission apparatus to an optical transmission apparatus or the optical transmission apparatus. The optical transmission apparatus is configured to detect the monitoring signal returned from the return unit and notifies the optical transmission apparatus of a result of the detection. The optical transmission apparatus instructs the submarine branching apparatus to switch the output destination of the main signal in accordance with the notification.
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公开(公告)号：US11658750B2
公开(公告)日：2023-05-23
申请号：US16756200
申请日：2018-08-15
Applicant: NEC Corporation
Inventor： Ryuji Aida , Eduardo Mateo Rodriguez
CPC classification number: H04B10/80 , H04B10/25 , H04Q11/0005
Abstract: An optical transmission apparatus outputs a main signal. An optical transmission apparatus superimposes a monitoring signal on an optical signal and outputs it. A submarine branching apparatus includes a return unit configured to return the monitoring signal received from the optical transmission apparatus and is configured to switch an output destination of the main signal received from the optical transmission apparatus to an optical transmission apparatus or the optical transmission apparatus. The optical transmission apparatus is configured to detect the monitoring signal returned from the return unit and notifies the optical transmission apparatus of a result of the detection. The optical transmission apparatus instructs the submarine branching apparatus to switch the output destination of the main signal in accordance with the notification.
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公开(公告)号：US11159264B2
公开(公告)日：2021-10-26
申请号：US16971494
申请日：2019-03-11
Applicant: NEC Corporation
Inventor： Ryuji Aida
Abstract: In order to provide an optical transmission device capable of implementing the spectral control of WDM signals while taking into account optical component characteristics, an optical transmission device is provided with: a WSS; a wavelength monitor that outputs a signal expressing a first spectrum, which is the spectrum of the WSS optical output; an optical processing unit that subjects the WSS optical output to prescribed processing; a temperature monitor that outputs a signal indicating the temperature of an optical processing means; and a control unit that receives the input of the signal expressing the first spectrum and the signal indicating the temperature, and controls the transmission characteristics of the WSS on the basis of the first spectrum and the temperature.
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4.发明授权公开(公告)号：US09735914B2
公开(公告)日：2017-08-15
申请号：US14808094
申请日：2015-07-24
Applicant: NEC Laboratories America, Inc. , NEC Corporation
Inventor： Eduardo F. Mateo Rodriguez , Philip N. Ji , Ryuji Aida
CPC classification number: H04J14/0212 , H04B3/52 , H04J14/0204 , H04J14/021 , H04Q11/0005 , H04Q11/0062 , H04Q2011/0016
Abstract: A method for data transport that includes providing a branch terminal between a first and second trunk terminal, wherein a branching unit is present at an intersect between the first and second trunk terminal and the branch terminal. The branching unit includes a reconfigurable add/drop multiplexers (ROADM) at least one attenuator. A signal is sent from a second terminal of the first and second trunk terminal to the branding unit. The signal may include a branch traffic component trunk traffic component. The branching unit includes at least one attenuator for attenuating the trunk traffic component so that the trunk traffic component of the signal cannot be detected at the branch terminal.
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5.发明申请公开(公告)号：US20130259475A1
公开(公告)日：2013-10-03
申请号：US13855384
申请日：2013-04-02
Applicant: NEC LABORATORIES AMERICA, INC. , NEC CORPORATION
Inventor： Philip N. Ji , Ryuji Aida , Ting Wang
IPC: H04Q11/00
CPC classification number: H04Q11/0005 , H04L12/28 , H04Q11/00 , H04Q2011/0016
Abstract: Methods and systems for optical communication in a submarine network are provided. An input signal is received from a terminal at a reconfigurable branching unit (BU), and the input signal is split into at least two parts, with one part being associated with one or more trunk terminals and another part being associated with one or more branch terminals. Each of one or more spectrum channels are selected and individually switched to one of a plurality of paths using at least one wavelength selective switch (WSS), with the at least one WSS being configured to transmit the one or more spectrum channels to their respective target output port and to combine signals switched to a specific port into a wavelength division multiplexing (WDM) signal. Individual spectrum channels are filtered out using at least one wavelength blocker (WB).
Abstract translation: 提供了海底网络光通信的方法和系统。 在可重构分支单元（BU）处从终端接收输入信号，并且将输入信号分成至少两部分，其中一部分与一个或多个中继终端相关联，另一部分与一个或多个分支 终端。 使用至少一个波长选择开关（WSS）来选择一个或多个频谱信道中的每一个并且单独地切换到多个路径中的一个，其中所述至少一个WSS被配置为将一个或多个频谱信道发送到它们各自的目标 输出端口并将切换到特定端口的信号组合成波分复用（WDM）信号。 使用至少一个波长阻挡器（WB）滤除各个频谱通道。
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Patent Agency Ranking
公开(公告)号：US12301295B2
公开(公告)日：2025-05-13
申请号：US18022932
申请日：2021-09-27
Applicant: NEC Corporation
Inventor： Yutaka Yano , Yoshihisa Inada , Takehiro Nakano , Ryuji Aida
IPC: H04B10/524 , H04B10/071 , H04B10/077 , H04J14/02 , H04J14/08
Abstract: In order to avoid the phenomenon of communication being impeded and signals transmitted by the plurality of slave devices overlapping, a communication system according to the present invention has the first master device transmits a first pulsed light to the first transmission path and receives a return light of the first pulsed light from the second transmission path; each of the slave devices modulates the first pulsed light, and outputs the modulated first pulsed light as the return light of the first pulsed light; and the width of the first pulsed light is narrower than double the shortest distance from among the transmission distance between the slave device outputting the return light and the transmission distance between the first master device and the slave device outputting the return light.
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公开(公告)号：US10153850B2
公开(公告)日：2018-12-11
申请号：US14913465
申请日：2014-08-20
Applicant: NEC Corporation
Inventor： Ryuji Aida
Abstract: This power feed line switching circuit for switching connection states among a plurality of power feed lines has a plurality of switching circuits, and a variable resistance unit. The switching circuits switch the connection states among the power feed lines. The variable resistance unit is disposed on the connecting paths among the power feed lines before and after the switching, and the resistance values thereof change in conjunction with operations of the switching circuits.
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8.发明申请MECHANISM FOR TRAFFIC PRIVACY IN RECONFIGURABLE ADD/DROP MULTIPLEXER BASED SUBMARINE NETWORKS 有权可重新配置的基于多路复用器的子网络中的交通隐私机制公开(公告)号：US20160028502A1
公开(公告)日：2016-01-28
申请号：US14808094
申请日：2015-07-24
Applicant: NEC Laboratories America, Inc. , NEC Corporation
Inventor： Eduardo F. Mateo Rodriguez , Philip N. Ji , Ryuji Aida
CPC classification number: H04J14/0212 , H04B3/52 , H04J14/0204 , H04J14/021 , H04Q11/0005 , H04Q11/0062 , H04Q2011/0016
Abstract: A method for data transport that includes providing a branch terminal between a first and second trunk terminal, wherein a branching unit is present at an intersect between the first and second trunk terminal and the branch terminal. The branching unit includes a reconfigurable add/drop multiplexers (ROADM) at least one attenuator. A signal is sent from a second terminal of the first and second trunk terminal to the branding unit. The signal may include a branch traffic component trunk traffic component. The branching unit includes at least one attenuator for attenuating the trunk traffic component so that the trunk traffic component of the signal cannot be detected at the branch terminal.
Abstract translation: 一种用于数据传输的方法，包括在第一和第二干线终端之间提供分支终端，其中分支单元存在于第一和第二干线端子与分支端子之间的交叉处。 分支单元包括至少一个衰减器的可重配置分插复用器（ROADM）。 信号从第一和第二中继终端的第二终端发送到品牌单元。 信号可以包括分支业务分量中继业务分量。 分支单元包括用于衰减中继线业务分量的至少一个衰减器，使得在分支终端不能检测到信号的中继线业务分量。
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公开(公告)号：US20140308036A1
公开(公告)日：2014-10-16
申请号：US14353012
申请日：2012-09-21
Applicant: NEC CORPORATION
Inventor： Ryuji Aida
CPC classification number: H04Q11/0005 , H04B3/44 , H04B10/806
Abstract: A branching unit includes a supply destination switching section that switches one supply destination of each of a plurality of power lines that supply electric power to a unit that transfers an optical signal received from a terminal station unit through a transmission line to another supply destination corresponding to a control signal received from the terminal station unit; a current detection section that outputs a detection signal that includes information that denotes whether currents are flowing in the plurality of power lines and information that represents current directions if currents are flowing; and a monitor section that transmits a monitored result based on at least one of a plurality of detection signals received from the current detection section to the terminal station unit.
Abstract translation: 分支单元包括：供给目的地切换部，其将通过传输线将从终端站单元接收的光信号传递给单元的多个电力线中的每一个的供电目的地切换到对应于 从终端站单元接收的控制信号; 电流检测部，其输出包含表示电流是否流过所述多条电力线的信息的检测信号，以及如果电流流动则表示电流方向的信息; 以及监视部，其基于从所述当前检测部接收到的所述多个检测信号中的至少一个发送到所述终端站单元的监视结果。
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公开(公告)号：US11914191B2
公开(公告)日：2024-02-27
申请号：US17431229
申请日：2020-02-03
Applicant: NEC Corporation
Inventor： Ryuji Aida
IPC: G02B6/293 , G02B6/28 , H04B10/077 , H04J14/02
CPC classification number: G02B6/29383 , G02B6/2835 , G02B6/2938 , H04B10/077 , H04J14/02
Abstract: To provide an optical branch coupler which facilitates communizing the design of an optical transmission path, the optical branch coupler comprising: a first add drop unit for outputting a third optical signal to a first line in which a first optical signal received from the first line and a second optical signal inserted into the first line are multiplexed and outputting the first optical signal; and a second add drop unit for receiving the first optical signal, receiving a sixth optical signal from a second line different from the first line in which a fourth optical signal and a fifth optical signal dropped from the second line are wavelength multiplexed, demultiplexing the fourth and fifth optical signals, and outputting a seventh optical signal to the second line in which the fourth optical signal and the first optical signal transmitted by the first add drop unit are multiplexed.
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