公开(公告)号：US09887797B2

公开(公告)日：2018-02-06

申请号：US15109280

申请日：2014-12-24

申请人： British Telecommunications Public Limited Company

发明人： Albert Rafel Porti

IPC分类号： H04J14/02 ,  H04B10/032

CPC分类号： H04J14/0295 ,  H04B10/032 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04J14/0291

摘要： An optical line terminal for use in a multi-wavelength network to operatively connect via a PON port by a first connection to a first network node and to operatively connect via the PON port by a second connection to a second network node, the optical line terminal being configured to operate under first network conditions by sending no data via the second connection, and to operate under second network conditions by sending data via the second connection.

公开(公告)号：US20180034577A1

公开(公告)日：2018-02-01

申请号：US15724940

申请日：2017-10-04

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： Francesco Testa ,  Alberto BIANCHI

IPC分类号： H04J14/02 ,  H04Q11/00

CPC分类号： H04J14/0212 ,  H04J14/0206 ,  H04J14/0283 ,  H04J14/0294 ,  H04J14/0295 ,  H04Q11/0066 ,  H04Q2011/0016 ,  H04Q2011/0039 ,  H04Q2011/0081

摘要： An optical switch, comprising: a first optical waveguide, a first optical add path, a second optical add path and a micro-ring resonator. The micro-ring resonator is operable to add a first optical signal at a preselected wavelength received from the first optical add path to the first optical waveguide to travel in a first direction through the first optical waveguide. The micro-ring resonator is further operable to add a second optical signal at the preselected wavelength received from the second optical add path to the first optical waveguide to travel in a second direction through the first optical waveguide opposite to the first direction. There is also provided an optical drop switch, an optical switching apparatus, an optical communications network node and an optical communications network.

公开(公告)号：US09871580B2

公开(公告)日：2018-01-16

申请号：US15095476

申请日：2016-04-11

申请人： FUJITSU LIMITED

发明人： Yasuki Fujii ,  Takao Naito

IPC分类号： H04B10/038 ,  H04B10/032 ,  H04B10/035 ,  H04B10/275 ,  H04J14/02

CPC分类号： H04B10/038 ,  H04B10/032 ,  H04B10/035 ,  H04B10/275 ,  H04J14/0283 ,  H04J14/0287 ,  H04J14/0295

摘要： A transmission apparatus being one of a plurality of transmission apparatuses included in a ring network, including: a processor configured to: receive a specified message from a first transmission apparatus, the specified message being for setting loopback for at least one wavelength in a ring network, the specified message being transmitted when a failure of at least one optical signal having the at least one wavelength is detected in a specified link of the ring network, and set a loopback to a switch, the loopback being set for a specified wavelength of the at least one wavelength when a specified optical signal having the specified wavelength is terminated by the switch and converted to an electrical signal and when the specified optical signal having the specified wavelength is not terminated and not converted to an electrical signal by any apparatus from a second transmission apparatus to the specified link.

公开(公告)号：US09820021B2

公开(公告)日：2017-11-14

申请号：US14802240

申请日：2015-07-17

申请人： Ciena Corporation

发明人： Robert Friskney ,  Fiona Davis ,  Nigel Baker ,  Christopher Phillips ,  Song Dong

IPC分类号： H04B10/25 ,  H04Q11/00 ,  H04L12/725 ,  H04L12/721 ,  H04L12/727 ,  H04J14/02

CPC分类号： H04Q11/0066 ,  H04B10/25 ,  H04J14/0257 ,  H04J14/0271 ,  H04J14/0295 ,  H04L45/121 ,  H04L45/124 ,  H04L45/127 ,  H04L45/30 ,  H04L45/308 ,  H04L45/70 ,  H04Q2011/0073 ,  H04Q2011/0086

摘要： A method for determining a path in an optical network, implemented by one or more controllers associated with a control layer, includes receiving a path request specifying start and end points, an associated bandwidth, and a longevity parameter providing an anticipated length during which the path is required; determining a route in the optical network through a routing algorithm executed by the controller, wherein the routing algorithm utilizes the start and end points, the associated bandwidth, and the longevity parameter to determine the path; and provisioning the path through a plurality of switches along the route.

公开(公告)号：US09723385B2

公开(公告)日：2017-08-01

申请号：US14073233

申请日：2013-11-06

申请人： Coriant Operations, Inc.

发明人： Peigang Hu ,  Eric L. Chan ,  Matthew S. Vrba

IPC分类号： H04J14/00 ,  H04B10/08 ,  H04Q11/00 ,  H04B10/032 ,  H04B10/075 ,  H04J14/02 ,  H04B10/07 ,  H04B10/079

CPC分类号： H04Q11/0005 ,  H04B10/032 ,  H04B10/07 ,  H04B10/075 ,  H04B10/079 ,  H04B10/0793 ,  H04J14/021 ,  H04J14/0294 ,  H04J14/0295

摘要： A procedure for transferring wavelengths, and a system that operates in accordance with the procedure. The system comprises at least one network terminal, each including a switch and a controller. A plurality of wavelength sets are applied to the switch. The controller is arranged to operate the switch such that the switch (a) selects at least one wavelength from at least one of the plurality of wavelength sets, based on electrical monitoring at a port module external to the network terminal, and (b) outputs the at least one wavelength to an output of the at least one network terminal.

公开(公告)号：US09692544B2

公开(公告)日：2017-06-27

申请号：US13482594

申请日：2012-05-29

申请人： Glenn A. Wellbrock ,  Tiejun J. Xia

发明人： Glenn A. Wellbrock ,  Tiejun J. Xia

IPC分类号： H04B10/08 ,  H04J14/00 ,  H04J14/02 ,  H04B10/035 ,  H04B10/075

CPC分类号： H04J14/0204 ,  H04B10/035 ,  H04B10/075 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0217 ,  H04J14/0227 ,  H04J14/0295

摘要： A method and apparatus for approaches for troubleshooting optical networks, particularly ROADM-based networks is described. The method includes designating a first port, of an optical communication node of a transport network, as an ingress for a loop-back optical signal to troubleshoot the transport network, designating a second port, of the optical communication node, as an egress for the loop-back optical signal, and establishing a loop-back connection between the first port and the second port to transport the loop-back optical signal.

公开(公告)号：US20170093484A1

公开(公告)日：2017-03-30

申请号：US14871424

申请日：2015-09-30

申请人： Juniper Networks, Inc.

发明人： Theodore J. Schmidt ,  Roberto Marcoccia ,  George R. Sosnowski ,  Christian Malouin

IPC分类号： H04B10/03 ,  H04B10/40

CPC分类号： H04B10/03 ,  H04B10/40 ,  H04J14/0295 ,  H04J14/0297

摘要： In some embodiments, an apparatus includes an optical transceiver that includes a first set of electrical transmitters operatively coupled to a switch. Each electrical transmitter from the first set of electrical transmitters is configured to transmit an electrical signal from a set of electrical signals. In such embodiments, the switch is configured to switch an electrical signal from the set of electrical signals such that the set of electrical signals are transmitted via a second set of electrical transmitters. Each electrical transmitter from the second set of electrical transmitters is operatively coupled to an optical transmitter from a set of optical transmitters. The set of optical transmitters is operatively coupled to an optical multiplexer. In such embodiments, at least one electrical transmitter from the second set of electrical transmitters is associated with a failure within the optical transceiver.

公开(公告)号：US20160329984A1

公开(公告)日：2016-11-10

申请号：US15109280

申请日：2014-12-24

申请人： British Telecommunications Public Limited Company

发明人： Albert RAFEL PORTI

IPC分类号： H04J14/02 ,  H04Q11/00

CPC分类号： H04J14/0295 ,  H04B10/032 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04J14/0291

摘要： An optical line terminal for use in a multi-wavelength network to operatively connect via a PON port by a first connection to a first network node and to operatively connect via the PON port by a second connection to a second network node, the optical line terminal being configured to operate under first network conditions by sending no data via the second connection, and to operate under second network conditions by sending data via the second connection.

摘要翻译： 一种用于多波长网络的光线路终端，经由PON端口通过第一连接与第一网络节点可操作地连接，并且经由PON端口通过第二连接操作地连接到第二网络节点，光线路终端 被配置为通过经由第二连接发送数据而在第一网络条件下操作，并且通过经由第二连接发送数据在第二网络条件下操作。

公开(公告)号：US20160261350A1

公开(公告)日：2016-09-08

申请号：US15048407

申请日：2016-02-19

申请人： FUJITSU LIMITED

发明人： Kentaro NAKAMURA ,  Ryosuke GOTO

IPC分类号： H04B10/572

CPC分类号： H04B10/572 ,  H04J14/0267 ,  H04J14/0295

摘要： An optical transmission device includes: a first receiver that receives a first optical signal transmitted by a first sub carrier included in a super channel; a second receiver that receives a second optical signal transmitted by a second sub carrier included in the super channel; and an optical delay device that delays the first optical signal, based on path lengths of respective transmission paths along which the first optical signal and the second optical signal are transmitted.

摘要翻译： 一种光传输设备包括：第一接收机，其接收由超信道中包括的第一子载波发送的第一光信号; 第二接收机，其接收由所述超级信道中包含的第二子载波发送的第二光信号; 以及光延迟装置，其基于发送所述第一光信号和所述第二光信号的各个传输路径的路径长度来延迟所述第一光信号。

公开(公告)号：US09166679B2

公开(公告)日：2015-10-20

申请号：US13425640

申请日：2012-03-21

申请人： Norifumi Shukunami

发明人： Norifumi Shukunami

IPC分类号： G01J1/32 ,  H04B10/032 ,  H04B10/079 ,  H04B10/293 ,  H04J14/02

CPC分类号： H04B10/032 ,  H04B10/0797 ,  H04B10/2937 ,  H04J14/0294 ,  H04J14/0295

摘要： An optical amplification apparatus includes an optical amplification medium configured to receive a first light signal from an end of the optical amplification medium and a second light signal from the other end of the optical amplification medium in opposite directions, the first and second light signals being branched from a light signal, an excitation light source configured to supply excitation light to the optical amplification medium through a multiplexer, a monitor configured to monitor the first and second light signals input to the optical amplification medium, respectively and to output monitoring signals respectively, and a controller configured to control the excitation light source in accordance with the monitoring signals.

摘要翻译： 一种光放大装置，包括：光放大介质，被配置为从光放大介质的一端接收第一光信号和来自光放大介质的另一端的相反方向的第二光信号，第一和第二光信号是分支的 通过光信号，被配置为通过多路复用器将激励光提供给光放大介质的激励光源，分别监视输入到光放大介质的第一和第二光信号并分别输出监视信号的监视器，以及 控制器，被配置为根据监视信号控制激励光源。