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1.发明申请公开(公告)号：US20200252136A1
公开(公告)日：2020-08-06
申请号：US16648935
申请日：2018-09-14
Inventor： Andrew LORD
Abstract: An optical receiver including a mode-coupling receiver; in which the mode-coupling receiver includes a plurality of inputs; in which the mode-coupling receiver is configured to detect receipt of a single-photon signal comprising a stream of single photons on each of the plurality of inputs.
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公开(公告)号：US20160057515A1
公开(公告)日：2016-02-25
申请号：US14780959
申请日：2014-03-12
Inventor： Andrew LORD
IPC: H04Q11/00
CPC classification number: H04Q11/0005 , H04J14/0204 , H04J14/0205 , H04J14/0212 , H04J14/0217 , H04J14/0219 , H04J14/026 , H04Q11/0062 , H04Q2011/0015 , H04Q2011/0052
Abstract: An upgradable optical route for tis use in an optical switching network is disclosed. In an initial configuration, the optical router contains wavelength selective switches configured to switch optical signals having WDM wavelengths positioned in a grid having exactly 100 GHz (about 0.8 nm) spacing in optical frequency, aka fixed grid. The interface ports and optical backplane within the optical switch contain an optical splitter and optical coupler and additionally space for a second selective switch. At a later point in time, a second wavelength selective switch can be added to provide additional capabilities such as switching wavelengths positioned in at flexible grid.
Abstract translation: 公开了一种用于光交换网络中的可升级光路由。 在初始配置中，光路由器包含波长选择开关，其被配置为切换具有定位在光频中具有正好100GHz（约0.8nm）间隔的网格中的WDM波长的光信号，也称为固定网格。 光开关内的接口端口和光背板包含光分路器和光耦合器，另外用于第二选择开关。 在稍后的时间点上，可以添加第二波长选择开关以提供额外的能力，例如位于柔性网格中的开关波长。
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公开(公告)号：US20220166611A1
公开(公告)日：2022-05-26
申请号：US17593683
申请日：2020-03-11
Inventor： Andrew LORD
Abstract: A system of transmitting optical pulses from a transmitter to first and second receivers for the purposes of quantum key distribution is disclosed. The system can include a transmitter configured to transmit a plurality of optical pulses; first and second receivers configured to receive some or all of the plurality of optical pulses; a guide for guiding the plurality of optical pulses, the guide having first and second output ports, the first output port being in optical communication with the first receiver and the second output port being in optical communication with the second receiver, the guide being configured to output a proportion of the optical pulses at the first output port and a proportion of the optical pulses at the second output port, modification means for modifying the guide so as to change the proportion of the optical pulses output at the first output port.
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公开(公告)号：US20180115384A1
公开(公告)日：2018-04-26
申请号：US15562859
申请日：2016-03-29
Inventor： Paul WRIGHT , Andrew LORD , Michael PARKER
IPC: H04J14/02
CPC classification number: H04J14/0267 , H04J14/0257 , H04J14/0278
Abstract: A method of allocating spectrum to a signal in a wavelength division multiplex network including comprising a plurality of nodes, wherein the spectrum comprises a grid divided into a plurality of slots, including comprising allocating to the signal a slot immediately adjacent to a second slot occupied by a second signal, wherein the signal and the second signal are both addressed to the same destination node, and wherein the slots allocated to the signal and the second signal form a spectrum block.
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公开(公告)号：US20230246710A1
公开(公告)日：2023-08-03
申请号：US18004798
申请日：2021-06-21
Inventor： Andrew LORD
IPC: H04B10/079 , H04B10/25 , H04J14/02
CPC classification number: H04B10/07953 , H04B10/2589 , H04J14/0215
Abstract: A method of configuring an optical network comprising a switching system, a first node, a second node, and an optical link between the first node and the second node. The optical link includes a first optical connection and a second optical connection. The method includes changing a state of the switching system from a first state to a second state. In the first state, the optical network is configured to use the first and second optical connection to transmit first and second optical signals in first and second directions, respectively. In the second state the optical network is configured to use the second and first optical connections to transmit the first and second optical signals in the first and second directions, respectively.
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Patent Agency Ranking
公开(公告)号：US20160057513A1
公开(公告)日：2016-02-25
申请号：US14780932
申请日：2014-03-12
Inventor： Andrew LORD
CPC classification number: H04Q11/0005 , H04J14/0204 , H04J14/0205 , H04J14/0217 , H04J14/0219 , H04Q2011/0015 , H04Q2011/0058
Abstract: An optical switch suitable for use in an add/drop of an optical network node having F>1 optical fiber per direction, the F fibers together carrying optical signals comprising up to N independent wavelength channels, is disclosed. The switch includes an Optical Cross-Connect (OXC) having F input ports and N output ports. F optical splitters are connected to the OXC, the input and output ports of the optical splitters defining ports of the OXC. The OXC is controllable to switch optical signals arriving at any of the F switch input ports to the input port of any of the F optical splitters such that each switch input port is switched to an optical splitter having at least as many splitter output ports as the number of independent wavelength channels received at the switch input port. A method for splitting optical signals is also disclosed.
Abstract translation: 公开了一种光学开关，其适用于每个方向具有F> 1个光纤的光网络节点的分插，所述F光纤一起携带包括多达N个独立波长信道的光信号。 该交换机包括具有F个输入端口和N个输出端口的光交叉连接（OXC）。 F光分路器连接到OXC，光分路器的输入和输出端口定义了OXC的端口。 OXC可控制，以将到达任何F开关输入端口的光信号切换到任何F分光器的输入端口，使得每个开关输入端口切换到具有至少与分配器输出端口 在交换机输入端口接收的独立波长信道的数量。 还公开了一种用于分离光信号的方法。
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公开(公告)号：US20150326955A1
公开(公告)日：2015-11-12
申请号：US14409745
申请日：2013-05-10
Inventor： Andrew LORD , Richard Andrew JENSEN
CPC classification number: H04J14/0204 , H04J14/02 , H04J14/0205 , H04J14/0212 , H04J14/0217 , H04J14/0219 , H04J14/026 , H04Q11/0005 , H04Q2011/0015 , H04Q2011/0016 , H04Q2011/0052
Abstract: An upgradable optical router for use in an optical switching network. In an initial configuration, the optical router includes wavelength selective switches configured to switch optical signals having WDM wavelengths positioned in a grid having exactly 100 GHz (about 0.8 nm) spacing in optical frequency, aka fixed grid. The interface ports within the optical switch include an optical splitter and optical coupler and additionally space for a second selective switch. At a later point in time, a second wavelength selective switch can be added to provide additional capabilities such as switching wavelengths positioned in a flexible grid.
Abstract translation: 用于光交换网络的可升级光路由器。 在初始配置中，光路由器包括波长选择开关，其被配置为切换光学信号，所述光信号具有定位在光频中具有正好100GHz（约0.8nm）间隔的网格中的WDM波长，即固定网格。 光开关内的接口端口包括光分路器和光耦合器，另外用于第二选择开关。 在稍后的时间点上，可以添加第二波长选择开关以提供额外的能力，例如位于灵活网格中的开关波长。
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公开(公告)号：US20230177339A1
公开(公告)日：2023-06-08
申请号：US17995185
申请日：2021-03-22
Inventor： Andrew LORD
CPC classification number: G06N3/084 , H04L9/0852
Abstract: There is herein disclosed a computer-implemented method of optimizing optimising a QKD system, the QKD system being adapted to perform a QKD session that involves the propagation of a plurality of photons from a first device to a second device, one of the first and second devices being located aboard a satellite in orbit, the method including running a machine learning algorithm, inputs of the machine learning algorithm comprising one or more values of one or more of the following factors: atmospheric conditions in the vicinity of a path from the first device to the second device; a spatial separation of the first device and the second device; and a measure of the performance of the first and/or the second device, wherein the output of the algorithm is an estimate of the rate at which the first device and the second device generate bits of a quantum key.
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公开(公告)号：US20230059630A1
公开(公告)日：2023-02-23
申请号：US17759683
申请日：2021-01-14
Inventor： Andrew LORD
Abstract: There is herein provided a method of performing Quantum Key Distribution, the method comprising, transmitting, in a first basis state, a first photon from a quantum transmitter to a quantum receiver; transmitting, in a second basis state, a second photon from the quantum transmitter to the quantum receiver, the second basis state being non-orthogonal to the first basis state and the transmitter and receiver being optically connected by both a first optical channel and a second optical channel, wherein the step of transmitting the first photon from the quantum transmitter to the quantum receiver in the first basis state comprises: transmitting the first photon from the quantum transmitter to the quantum receiver along either the first optical channel or the second optical channel, wherein the step of transmitting the second photon from the quantum transmitter to the quantum receiver in the second basis state comprises: transmitting a first portion of the probability distribution of the second photon from the transmitter to the receiver along the first optical channel; and transmitting a second portion of the probability distribution of the second photon from the transmitter to the receiver along the second optical channel.
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公开(公告)号：US20160241353A1
公开(公告)日：2016-08-18
申请号：US15028530
申请日：2014-10-10
Inventor： Paul Daniel WRIGHT , Andrew LORD , Michael Charles PARKER
IPC: H04J14/02
CPC classification number: H04J14/0267 , H04J14/0256 , H04J14/0257 , H04J14/026
Abstract: A routing and wavelength assignment method for use in an optical fiber network includes (i) identifying a path between each node pair in the network, (ii) identifying a block of spectral resource within the spectrum band of the identified path of a selected node pair, (iii) calculating a spectrum entropy value of the identified path of the selected node pair based on a logarithm of the ratio of the number of wavelength channels in each of the one or more blocks, to the total number of wavelength channels across the spectrum band, (iv) iterating (ii) and (iii) in respect of each of the paths between each other node pair in the network, until a spectrum entropy value of all the paths between all the node pairs has been calculated, (v) summing the spectrum entropy value of all of the paths between all of the node pairs to obtain a network spectrum entropy value in respect of a network configuration based on the paths between the node pairs, and (vi) determining from the network spectrum entropy value whether a signal carrying a demand through the network is separated from any other signals by a spectral gap sufficient to accommodate a change in the demand to an expected level.
Abstract translation: 用于光纤网络的路由和波长分配方法包括：（i）识别网络中每个节点对之间的路径，（ii）识别所选节点对的所识别路径的频谱范围内的频谱资源块 ，（iii）基于所述一个或多个块中的每个中的每一个中的波长信道的数量的比率与所述频谱中的每个波长信道的总数的对数来计算所选择的节点对的所识别的路径的频谱熵值 （iv）对于网络中每个其他节点对之间的每个路径迭代（ii）和（iii），直到已经计算了所有节点对之间的所有路径的频谱熵值，（v） 对所有节点对之间的所有路径的频谱熵值求和，基于节点对之间的路径获得关于网络配置的网络频谱熵值，以及（vi）从网络频谱e ntropy值是否通过网络承载需求的信号是否与任何其他信号分离，其频谱间隙足以将需求的变化适应到预期的水平。
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