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1. 发明授权

US11539430B2 Code division multiple access optical subcarriers 有权
公开(公告)号：US11539430B2
公开(公告)日：2022-12-27
申请号：US16809504
申请日：2020-03-04
申请人： Infinera Corporation
发明人： Amir Jafari , David F. Welch , Steven Joseph Hand , Mohamed Osman
IPC分类号： H04B10/50 , H04B7/26 , 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
摘要： Consistent the present disclosure, a network or system is provided in which a hub or primary node may communication with a plurality of leaf or secondary nodes. The hub node may operate or have a capacity that may be greater than that of the leaf nodes. Accordingly, relatively inexpensive leaf nodes may be deployed that 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, and optical add/drop multiplexer, for example. Consistent with an aspect of the present disclosure, optical subcarriers may be transmitted over such connections. 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. In addition, the subcarriers may be employed using multiple access techniques, such as frequency division multiplexing (FDM), code-division multiple access (CDMA), and time-division multiple access so that the primary node can communicate with a relatively large number of secondary nodes. In addition, an out-of-band control channel may be provided to carry OAM information from the primary node to the secondary nodes, as well as from the secondary nodes to the primary nodes.

2. 发明申请

US20200287651A1 TIME DIVISION MULTIPLE ACCESS OPTICAL SUBCARRIERS 审中-公开
公开(公告)号：US20200287651A1
公开(公告)日：2020-09-10
申请号：US16809426
申请日：2020-03-04
申请人： Infinera Corporation
发明人： Amir Jafari , Kuang-Tsan Wu , David F. Welch , Steven Joseph Hand , Mohamed Osman
IPC分类号： H04J14/08
摘要： A transmitter can include a laser operable to output an optical signal; a digital signal processor operable to receive data and provide a plurality of electrical signals based on the data; and a modulator operable to modulate the optical signal to provide a plurality of optical subcarriers based on the plurality of electrical signals. One of the plurality of subcarriers carries first information indicative of a first portion of the data in a first time slot and second information indicative of a second portion of the data in a second time slot. The first information is associated with a first node remote from the transmitter and the second information is associated with a second node remote from the transmitter. A receiver as well as a system also are described.

3. 发明申请

US20220224419A1 OUT-OF-BAND COMMUNICATION CHANNEL FOR SUB-CARRIER-BASED OPTICAL COMMUNICATION SYSTEMS 有权
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.

4. 发明授权

US10965378B2 Out-of-band communication channel for sub-carrier-based optical communication systems 有权
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.

5. 发明申请

US20200287648A1 CODE DIVISION MULTIPLE ACCESS OPTICAL SUBCARRIERS 审中-公开
公开(公告)号：US20200287648A1
公开(公告)日：2020-09-10
申请号：US16809504
申请日：2020-03-04
申请人： Infinera Corporation
发明人： Amir Jafari , David F. Welch , Steven Joseph Hand , Mohamed Osman
IPC分类号： H04J14/00 , H04B10/50 , H04B10/61 , H04L1/00
摘要： Consistent the present disclosure, a network or system is provided in which a hub or primary node may communication with a plurality of leaf or secondary nodes. The hub node may operate or have a capacity that may be greater than that of the leaf nodes. Accordingly, relatively inexpensive leaf nodes may be deployed that 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, and optical add/drop multiplexer, for example. Consistent with an aspect of the present disclosure, optical subcarriers may be transmitted over such connections. 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. In addition, the subcarriers may be employed using multiple access techniques, such as frequency division multiplexing (FDM), code-division multiple access (CDMA), and time-division multiple access so that the primary node can communicate with a relatively large number of secondary nodes. In addition, an out-of-band control channel may be provided to carry OAM information from the primary node to the secondary nodes, as well as from the secondary nodes to the primary nodes.

6. 发明授权

US11990985B2 Time division multiple access optical subcarriers 有权
公开(公告)号：US11990985B2
公开(公告)日：2024-05-21
申请号：US17941174
申请日：2022-09-09
申请人： Infinera Corporation
发明人： Amir Jafari , Kuang-Tsan Wu , David F. Welch , Steven Joseph Hand , Mohamed Osman
IPC分类号： H04B7/26 , H04B10/077 , H04B10/079 , H04B10/25 , H04B10/2575 , H04B10/40 , H04B10/50 , H04B10/548 , H04B10/61 , H04B10/69 , H04J14/00 , H04J14/02 , H04J14/08 , H04J99/00 , H04L1/00 , H04L5/00 , H04Q11/00
CPC分类号： H04B7/2656 , H04B10/0773 , H04B10/0793 , H04B10/25 , H04B10/25754 , H04B10/40 , H04B10/503 , H04B10/504 , H04B10/505 , H04B10/548 , H04B10/61 , H04B10/613 , H04B10/69 , H04J14/005 , H04J14/0298 , H04J14/08 , H04J99/00 , H04L1/0041 , H04L1/0045 , H04L1/0071 , H04L5/001 , H04Q11/0005 , H04Q11/0067 , H04Q2011/0015 , H04Q2011/0035 , H04Q2011/0079
摘要： A transmitter can include a laser operable to output an optical signal; a digital signal processor operable to receive user data and provide electrical signals based on the data; and a modulator operable to modulate the optical signal to provide optical subcarriers based on the electrical signals. A first one of the subcarriers carriers carries first TDMA encoded information and second TDMA encoded information, such that the first TDMA encoded information is indicative of a first portion of the data and is carried by the first one of the subcarriers during a first time slot, and the second TDMA encoded information is indicative of a second portion of the data and is carried by the first one of the subcarriers during a second time slot. The first TDMA encoded information is associated with a first node remote from the transmitter and the second TDMA encoded information is associated with a second node remote from the transmitter. A second one of the subcarriers carries third information that is not TDMA encoded, the third information being associated with a third node remote from the transmitter. A receiver and system also are described.

7. 发明申请

US20200287649A1 CODE DIVISION MULTIPLE ACCESS OPTICAL SUBCARRIERS 审中-公开
公开(公告)号：US20200287649A1
公开(公告)日：2020-09-10
申请号：US16809509
申请日：2020-03-04
申请人： Infinera Corporation
发明人： Amir Jafari , David F. Welch , Steven Joseph Hand , Mohamed Osman
IPC分类号： H04J14/00 , H04B10/50 , H04B10/61
摘要： Consistent the present disclosure, a network or system is provided in which a hub or primary node may communication with a plurality of leaf or secondary nodes. The hub node may operate or have a capacity that may be greater than that of the leaf nodes. Accordingly, relatively inexpensive leaf nodes may be deployed that 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, and optical add/drop multiplexer, for example. Consistent with an aspect of the present disclosure, optical subcarriers may be transmitted over such connections. 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. In addition, the subcarriers may be employed using multiple access techniques, such as frequency division multiplexing (FDM), code-division multiple access (CDMA), and time-division multiple access so that the primary node can communicate with a relatively large number of secondary nodes. In addition, an out-of-band control channel may be provided to carry OAM information from the primary node to the secondary nodes, as well as from the secondary nodes to the primary nodes.

8. 发明授权

US11218217B2 Code division multiple access optical subcarriers 有权
公开(公告)号：US11218217B2
公开(公告)日：2022-01-04
申请号：US16809509
申请日：2020-03-04
申请人： Infinera Corporation
发明人： Amir Jafari , David F. Welch , Steven Joseph Hand , Mohamed Osman
IPC分类号： H04B10/50 , H04B10/61 , H04J14/00 , H04B7/26 , H04B10/548 , H04B10/69 , H04J14/02 , H04L1/00 , H04L5/00 , H04J14/08 , H04B10/077 , H04B10/079 , H04B10/25 , H04B10/40 , H04J99/00 , H04Q11/00 , H04B10/2575
摘要： Consistent the present disclosure, a network or system is provided in which a hub or primary node may communication with a plurality of leaf or secondary nodes. The hub node may operate or have a capacity that may be greater than that of the leaf nodes. Accordingly, relatively inexpensive leaf nodes may be deployed that 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, and optical add/drop multiplexer, for example. Consistent with an aspect of the present disclosure, optical subcarriers may be transmitted over such connections. 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. In addition, the subcarriers may be employed using multiple access techniques, such as frequency division multiplexing (FDM), code-division multiple access (CDMA), and time-division multiple access so that the primary node can communicate with a relatively large number of secondary nodes. In addition, an out-of-band control channel may be provided to carry OAM information from the primary node to the secondary nodes, as well as from the secondary nodes to the primary nodes.

9. 发明授权

US11088764B2 Out-of-band communication channel for sub-carrier-based optical communication systems 有权
公开(公告)号：US11088764B2
公开(公告)日：2021-08-10
申请号：US16578169
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, a transmitter includes a laser operable to supply an optical signal, a digital signal processor operable to supply first electrical signals based on first data input to the digital signal processor and second data input to the digital signal processor, digital-to-analog conversion circuitry operable to output second electrical signals based on the first electrical signals, modulator driver circuitry is operable to output third electrical signals based on the second electrical signals, and an optical modulator operable to supply first and second modulated optical signals based on the third electrical signals. The first modulated optical signal includes a plurality of optical subcarriers carrying user data. The second modulated optical signal is polarization modulated based on the second data.

10. 发明申请

US20200287621A1 TIME DIVISION MULTIPLE ACCESS OPTICAL SUBCARRIERS 审中-公开
公开(公告)号：US20200287621A1
公开(公告)日：2020-09-10
申请号：US16809441
申请日：2020-03-04
申请人： Infinera Corporation
发明人： Amir Jafari , Kuang-Tsan Wu , David F. Welch , Steven Joseph Hand , Mohamed Osman
IPC分类号： H04B7/26 , H04B10/50 , H04B10/548 , H04B10/61 , H04B10/69 , H04L5/00 , H04L1/00 , H04J14/02
摘要： A transmitter can include a laser operable to output an optical signal; a digital signal processor operable to receive user data and provide electrical signals based on the data; and a modulator operable to modulate the optical signal to provide optical subcarriers based on the electrical signals. A first one of the subcarriers carriers carries first TDMA encoded information and second TDMA encoded information, such that the first TDMA encoded information is indicative of a first portion of the data and is carried by the first one of the subcarriers during a first time slot, and the second TDMA encoded information is indicative of a second portion of the data and is carried by the first one of the subcarriers during a second time slot. The first TDMA encoded information is associated with a first node remote from the transmitter and the second TDMA encoded information is associated with a second node remote from the transmitter. A second one of the subcarriers carries third information that is not TDMA encoded, the third information being associated with a third node remote from the transmitter. A receiver and system also are described.

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