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公开(公告)号：US20230061657A1
公开(公告)日：2023-03-02
申请号：US17561858
申请日：2021-12-24
申请人： Infinera Corporation
发明人： Jeffrey T. Rahn , Kuang-Tsan Wu , Steven J. Hand , David F. Welch
IPC分类号： H04B7/26 , H04B10/50 , H04B10/548 , H04B10/61 , H04B10/69 , H04J14/02 , H04L1/00 , H04L5/00 , H04J14/08 , H04J14/00 , H04B10/077 , H04B10/079 , H04B10/25 , H04B10/40 , H04Q11/00 , H04B10/2575 , H04J99/00
摘要： A network or system in which a hub or primary node may communicate with a plurality of leaf or secondary nodes. The hub node may operate or have a capacity greater than that of the leaf nodes. Accordingly, relatively inexpensive leaf nodes may be deployed to receive data carrying optical signals from, and supply data carrying optical signals to, the hub node. One or more connections may couple each leaf node to the hub node, whereby each connection may include one or more spans or segments of optical fibers, optical amplifiers, optical splitters/combiners, and optical add/drop multiplexer, for example. Optical subcarriers may be transmitted over such connections, each carrying a data stream. The subcarriers may be generated by a combination of a laser and a modulator, such that multiple lasers and modulators are not required, and costs may be reduced. As the bandwidth or capacity requirements of the leaf nodes change, the number of subcarriers, and thus the amount of data provided to each node, may be changed accordingly. Each subcarrier within a dedicated group of subcarriers may carry OAM or control channel information to a corresponding leaf node, and such information may be used by the leaf node to configure the leaf node to have a desired bandwidth or capacity.
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公开(公告)号：US20230044890A1
公开(公告)日：2023-02-09
申请号：US17561768
申请日：2021-12-24
申请人： Infinera Corporation
发明人： Steven J. Hand
摘要： An example system includes a hub transceiver and a plurality of edge transceivers. The hub transceiver is operable to transmit, over a first communications channel, a first message to each of the edge transceivers concurrently, including an indication of available network resources on an optical communications network. Each of the edge transceiver is operable to transmit, transmit, over a second communications channel, a respective second message to the hub transceiver including an indication of a respective subset of the available network resources selected by the edge transceiver for use in communicating over the optical communications network. Further, the edge transceiver is operable to receive, from the hub transceiver, a third message acknowledging receipt of a selection and a fourth message confirming an assignment of the selected subset of the available network resources to the edge transceiver.
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公开(公告)号：US11476966B2
公开(公告)日：2022-10-18
申请号：US16893365
申请日：2020-06-04
申请人： Infinera Corporation
发明人： Steven J. Hand
摘要： An example system includes an optical gateway, plurality of hub transceivers, and a plurality of edge transceivers. The optical gateway is operable to receive a plurality of signals from an optical communications network at a plurality of ports of the optical gateway, where each port of the optical gateway comprises one or more respective photodiodes. Further, the optical gateway is operable to determine, for each port, a respective link of the optical communications network communicatively coupling the port with at least one hub transceiver of the plurality of hub transceivers or with at least one edge transceiver of the plurality of edge transceivers, and an identity of the at least one hub transceiver or the at least one edge transceiver.
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公开(公告)号：US20220224419A1
公开(公告)日：2022-07-14
申请号：US17527146
申请日：2021-11-15
申请人： Infinera Corporation
发明人： Amir Jafari , Steven J. Hand , Mohamed Osman
IPC分类号： H04B10/61 , H04B10/40 , H04J14/02 , H04B10/54 , H04B10/548 , H04B10/50 , G02B6/293 , H04B10/532
摘要： Techniques are described for implementing an out-of-band communication channel used to exchange control channel information in sub-carrier-based optical communication systems. In an example implementation, an optical communication system includes a primary transceiver, a component, and secondary transceivers. The primary transceiver is operable to supply first optical subcarriers to an optical communication path, the first optical subcarriers being amplitude modulated at a first frequency to carry first control information and amplitude modulated at a second frequency to carry second control information. The component is operable to be coupled to the optical communication path and includes circuitry operable to detect the first control information. The secondary transceivers are coupled to a terminal end of the optical communication path. At least one of the secondary transceivers is operable to detect the second control information and block the first control information.
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公开(公告)号：US20220123831A1
公开(公告)日：2022-04-21
申请号：US17561811
申请日：2021-12-24
申请人： Infinera Corporation
发明人： Jeffrey T. Rahn , Kuang-Tsan Wu , Steven J. Hand , David F. Welch
IPC分类号： H04B7/26 , H04B10/50 , H04B10/548 , H04B10/61 , H04B10/69 , H04J14/02 , H04L1/00 , H04L5/00 , H04J14/08 , H04J14/00 , H04B10/077 , H04B10/079 , H04B10/25 , H04B10/40 , H04J99/00 , H04Q11/00 , H04B10/2575
摘要： A network or system in which a hub or primary node may communicate with a plurality of leaf or secondary nodes. The hub node may operate or have a capacity greater than that of the leaf nodes. Accordingly, relatively inexpensive leaf nodes may be deployed to receive data carrying optical signals from, and supply data carrying optical signals to, the hub node. One or more connections may couple each leaf node to the hub node, whereby each connection may include one or more spans or segments of optical fibers, optical amplifiers, optical splitters/combiners, and optical add/drop multiplexer, for example. Optical subcarriers may be transmitted over such connections, each carrying a data stream. The subcarriers may be generated by a combination of a laser and a modulator, such that multiple lasers and modulators are not required, and costs may be reduced. As the bandwidth or capacity requirements of the leaf nodes change, the number of subcarriers, and thus the amount of data provided to each node, may be changed accordingly. Each subcarrier within a dedicated group of subcarriers may carry OAM or control channel information to a corresponding leaf node, and such information may be used by the leaf node to configure the leaf node to have a desired bandwidth or capacity.
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公开(公告)号：US20220006553A1
公开(公告)日：2022-01-06
申请号：US16893323
申请日：2020-06-04
申请人： Infinera Corporation
发明人： Steven J. Hand
摘要： An example system includes a hub transceiver, a plurality of edge transceivers, and a control module. The control module is operable to receive, from one or more of the edge transceivers or the hub transceiver, telemetry data regarding at least one of a transmission or a receipt of data over the optical communications network, and determine, based on the telemetry data, performance characteristics regarding the optical communications network. Further, the control module is operable to transmit, based on the performance characteristics, a command to one or more of the edge transceivers or the hub transceiver to modify an operation with respect to the optical communications network.
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公开(公告)号：US20220006519A1
公开(公告)日：2022-01-06
申请号：US17368754
申请日：2021-07-06
申请人： Infinera Corporation
发明人： Rajan Rao , Steven J. Hand , Vasudha Bhaskara
IPC分类号： H04B10/03 , H04B10/077
摘要： An example system includes a transceiver and a microcontroller. The microcontroller is configured to receive, from first and second network interfaces of the transceiver, a plurality of messages from a hub node and the leaf nodes. Each of the messages corresponds to a respective one of the ingress or egress data flows. The microcontroller is also configured generate a resource assignment map based on the messages. The resource assignment map includes pairings between a respective one of the ingress data flows and a respective one of the egress data flows, and, for each of the pairings, an indication of a respective network resource assigned to exchange the egress data flow of that pairing with a respective one of the leaf nodes. The microcontroller is also configured to generate a command to cause the transceiver to transmit the egress data flows in accordance with the resource assignment map.
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公开(公告)号：US20210211201A9
公开(公告)日：2021-07-08
申请号：US16578397
申请日：2019-09-22
申请人： Infinera Corporation
发明人： Jeffrey T. Rahn , Kuang-Tsan Wu , Steven J. Hand , David F. Welch
摘要： A network or system in which a hub or primary node may communicate with a plurality of leaf or secondary nodes. The hub node may operate or have a capacity greater than that of the leaf nodes. Accordingly, relatively inexpensive leaf nodes may be deployed to receive data carrying optical signals from, and supply data carrying optical signals to, the hub node. One or more connections may couple each leaf node to the hub node, whereby each connection may include one or more spans or segments of optical fibers, optical amplifiers, optical splitters/combiners, and optical add/drop multiplexer, for example. Optical subcarriers may be transmitted over such connections, each carrying a data stream. The subcarriers may be generated by a combination of a laser and a modulator, such that multiple lasers and modulators are not required, and costs may be reduced. As the bandwidth or capacity requirements of the leaf nodes change, the number of subcarriers, and thus the amount of data provided to each node, may be changed accordingly. Each subcarrier within a dedicated group of subcarriers may carry OAM or control channel information to a corresponding leaf node, and such information may be used by the leaf node to configure the leaf node to have a desired bandwidth or capacity.
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公开(公告)号：US20210126730A1
公开(公告)日：2021-04-29
申请号：US16893415
申请日：2020-06-04
申请人： Infinera Corporation
发明人： Steven J. Hand
摘要： In an example method, an edge transceiver receives a first message from a hub transceiver over a first communications channel of an optical communications network, including an indication of available network resources on the optical communications network. The edge transceiver transmits, over a second communications channel of the optical communications network, a second message to the hub transceiver, including an indication of a subset of the available network resources selected by the edge transceiver. The edge transceiver receives, from the hub transceiver, a third message acknowledging receipt of a selection by the edge transceiver and a fourth message confirming an assignment of the selected subset of the available network resources to the edge transceiver. The edge transceiver transmits, using the selected subset of the available network resources, data via the hub transceiver.
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公开(公告)号：US10965378B2
公开(公告)日：2021-03-30
申请号：US16578078
申请日：2019-09-20
申请人： Infinera Corporation
发明人： Amir Jafari , Steven J. Hand , Mohamed Osman
IPC分类号： H04B10/00 , H04B10/61 , H04B10/40 , H04J14/02 , H04B10/54 , H04B10/548 , H04B10/50 , G02B6/293 , H04B10/532 , H01S3/067
摘要： Techniques are described for implementing an out-of-band communication channel used to exchange control channel information in sub-carrier-based optical communication systems. In an example implementation, an apparatus includes an optical tap coupled to an optical communication path carrying a modulated optical signal carrying a plurality of optical subcarriers. The optical tap has a first output configured to supply a first portion of the modulated optical signal and a second output configured to supply a second portion of the modulated optical signal. The plurality of optical subcarriers are amplitude modulated based on control data at a first frequency, and each of the plurality of optical subcarriers is modulated to carry user data at a second frequency greater than the first frequency. The apparatus is configured to supply the control based on the first portion of the modulated optical signal.
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