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公开(公告)号：US20240235667A1
公开(公告)日：2024-07-11
申请号：US18406809
申请日：2024-01-08
申请人： ECI Telecom Ltd.
发明人： INBAL HECHT , EFRAIM GELMAN , SHIREL EZRA , ZIV SHEM-TOV , HAYIM PORAT
IPC分类号： H04B10/038 , H04B10/27
CPC分类号： H04B10/038 , H04B10/27
摘要： A network management system can be configured to identify routes for satisfying a set of demands on an optical communication network using layer graph(s). The layer graph edges can have edge scores that indicate a cost of the edge. The network management system can generate the layer graph(s) using a network graph that represents the optical communication network and an associated sets of available frequency slots. The network management system can iteratively identify candidate path(s) on the layer graph(s) that correspond to each of the demands and determine a cost for each candidate path using the edge scores. In each iteration, the network management system can select the lowest cost candidate path, update the layer graph(s) based on this selection, and update the candidate paths for the remaining demands as needed. The network management system can similarly generate restoration paths for each of the demands.
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公开(公告)号：US12010468B2
公开(公告)日：2024-06-11
申请号：US17914856
申请日：2021-07-01
申请人： Ciena Corporation
IPC分类号： H04B10/00 , H04B10/038 , H04B10/079 , H04Q11/00 , H04J14/00
CPC分类号： H04Q11/0062 , H04B10/038 , H04B10/0795 , H04B10/07953 , H04Q2011/0081
摘要： Systems and methods include receiving (S11) data for a plurality of elements associated with an optical network; determining (S12) an incremental noise penalty for each element of the plurality of elements based on the received data; and storing (S13) the incremental noise penalty for each element of the plurality of elements. The steps can further include determining (S14) Signal-to-Noise Ratio (SNR) across an optical path in the optical network by concatenating associated incremental noise penalties for each element in the optical path along with corrections. The present disclosure includes a fast, nonlinear estimation process with improved accuracy for low loss spans compared to traditional closed-form GN models, as well as a method to determine the coherent nonlinear penalty in an arbitrary concatenation of mixed heterogeneous fibers which is not considered by existing fast nonlinear interference calculation methods.
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公开(公告)号：US11956010B2
公开(公告)日：2024-04-09
申请号：US17892498
申请日：2022-08-22
申请人： Google LLC
发明人： Zuowei Shen , Biao He , Hong Liu
IPC分类号： H04B10/00 , H04B10/038 , H04B10/073 , H04J14/00
CPC分类号： H04B10/038 , H04B10/0731
摘要： The technology generally relates to determining a status of an optical channel between two components. For example, the components may be connected via an optical link including a plurality of optical channels. A first portion of the optical channels may be in use such that a second portion of the optical channels may be redundant channels. The component may include a test generator that transmits and receives a data pattern over each channel. The test generator may determine, based on the received data pattern, a status of each of the channels. If the status of a given channel is a failure status, the component may divert data for the given channel to a redundant channel.
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公开(公告)号：US11848698B2
公开(公告)日：2023-12-19
申请号：US17733199
申请日：2022-04-29
发明人： Gang Xie , Hao Li , Xianlong Luo , Min Zhao , Haomian Zheng
IPC分类号： H04B10/032 , H04B10/038 , H04J14/02
CPC分类号： H04B10/032 , H04B10/038 , H04J14/0287
摘要： A path protection method includes receiving, by a source node of a first path, a path event notify message from a first node on the first path. The path event notify message includes indication information that the first path is predicted to fail. The path protection method further includes obtaining, by the source node, information about a predicted protection path. The information about the predicted protection path includes resource information of a second path useable to protect a service on the first path. The first path and the second path include the source node and a same sink node. The path protection method further includes storing, by the source node, the resource information of the second path.
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公开(公告)号：US20230388011A1
公开(公告)日：2023-11-30
申请号：US18324771
申请日：2023-05-26
IPC分类号： H04B10/038 , H04B10/40 , H04B10/50
CPC分类号： H04B10/038 , H04B10/40 , H04B10/503
摘要： A 10G rate OLT terminal transceiver integrated chip based on XGPON and EML laser includes: a burst mode receiver RX which amplifies an electrical signal originated each ONU client and processed through a burst mode receiver TIA, processes amplitude and frequency double-detection, and outputs the signal whose amplitude and waveform pulse width met the threshold requirements to a host, and comprises a fast recovery module to meet the timing sequence requirement of the XGPON protocol; a continuous mode transmitter TX which receives the electrical signal attenuated by a PCB board, and selects a bypass BYPASS path or a clock data recovery CDR path according to a degree of attenuation to drive the EML laser; a digital control unit DIGIITAL which provides control signals to the burst mode receiver RX and the continuous mode transmitter TX; and a power module POWER to supply working power to the chip.
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公开(公告)号：US20230146640A1
公开(公告)日：2023-05-11
申请号：US17914856
申请日：2021-07-01
申请人： Ciena Corporation
IPC分类号： H04B10/038 , H04B10/079
CPC分类号： H04B10/038 , H04B10/07953
摘要： Systems and methods include receiving (S11) data for a plurality of elements associated with an optical network; determining (S12) an incremental noise penalty for each element of the plurality of elements based on the received data; and storing (S13) the incremental noise penalty for each element of the plurality of elements. The steps can further include determining (S14) Signal-to-Noise Ratio (SNR) across an optical path in the optical network by concatenating associated incremental noise penalties for each element in the optical path along with corrections. The present disclosure includes a fast, nonlinear estimation process with improved accuracy for low loss spans compared to traditional closed-form GN models, as well as a method to determine the coherent nonlinear penalty in an arbitrary concatenation of mixed heterogeneous fibers which is not considered by existing fast nonlinear interference calculation methods.
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公开(公告)号：US11627447B2
公开(公告)日：2023-04-11
申请号：US17451132
申请日：2021-10-15
IPC分类号： H04W4/46 , H04B10/516 , H04W24/08 , H04B10/038
摘要： Techniques for determining an alternative communication mode for vehicle-to-vehicle communication at a host vehicle can include monitoring the primary mode of RF communication to ensure it is effectively communicating and, if not, intelligently selecting a backup communication mode comprising one or more other sensors and/or systems of the vehicle. The selection of the backup communication mode may take into account various factors that can affect the various modes of communication from which the backup communication mode is selected.
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公开(公告)号：US20220279256A1
公开(公告)日：2022-09-01
申请号：US17745769
申请日：2022-05-16
IPC分类号： H04Q11/00 , H04B10/038
摘要： Embodiments of the present disclosure include a pluggable optical line system module for amplification, multiplexing, and demultiplexing of coherent optical signals that can be integrated with a switch-router. Integration may include mechanical, electrical, and software control aspects. One example embodiment of the optical line system is in an industry standard small form factor pluggable module such as OSFP (octal small form factor pluggable) or QSFP (quad small form factor pluggable). When configured in a switch-router, the pluggable optical line is powered, managed and controlled by the switch-router which greatly reduces the cost, space, power and the management complexity of optical line systems.
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公开(公告)号：US11368219B2
公开(公告)日：2022-06-21
申请号：US17100583
申请日：2020-11-20
发明人： Vincent Wolff , Kevin Lundgreen
IPC分类号： H04B10/00 , H04B10/2507 , H04B10/038 , H04B10/61 , H04B10/2569 , G02B6/27
摘要： A polarization dependent loss (PDL) compensation device for an optical system can be configured to output a compensating PDL to at least partially cancel a PDL of the optical system. In certain embodiments, the device can include a first polarization controller configured to modify a state of polarization of an optical signal, a PDL emulator disposed upstream of the first polarization controller and configured to output the compensating PDL upstream of the first polarization controller, and a second polarization controller disposed upstream of the PDL emulator and configured to modify a state of polarization of the optical signal upstream of the PDL emulator.
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10.发明授权公开(公告)号：US11336386B2
公开(公告)日：2022-05-17
申请号：US16637542
申请日：2018-09-19
申请人： NEC Corporation
发明人： Kazusa Ugajin
IPC分类号： H04J14/02 , H04B10/85 , H04B10/80 , H04B10/038 , H04B10/077
摘要： In order to provide a submarine optical transmission system that utilizes multiple wavelength bands, the submarine branching apparatus is provided with: a first demultiplexing part for demultiplexing a wavelength-multiplex optical signal input from a first terminal station into a first wavelength-multiplex optical signal and a second wavelength-multiplex optical signal; an optical add-drop part for outputting at least a third wavelength-multiplex optical signal included in the first wavelength-multiplex optical signal to a second terminal station, and for outputting a fifth wavelength-multiplex optical signal by multiplexing at least a fourth wavelength-multiplex optical signal included in the first wavelength-multiplex optical signal with a wavelength-multiplex optical signal input from the second terminal station; and a first multiplex part for multiplex the second wavelength-multiplex optical signal with the fifth wavelength-multiplex optical signal input from the optical add-drop part and outputting the resulting signal to a third terminal station.
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