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公开(公告)号：US12224800B2
公开(公告)日：2025-02-11
申请号：US17705057
申请日：2022-03-25
Applicant: Infinera Corporation
Inventor： Radhakrishna Valiveti , Rajan Rao , Vinod Narippatta , Sharfuddin Syed , Parthiban Kandappan
IPC: H04B10/27
Abstract: A method includes receiving client data; extracting overhead data from the client data; mapping the client data into one or more frames, where each of the one or more frames has a frame payload section and a frame overhead section, where the client data is mapped into the one or more frames; inserting the overhead data into the frame overhead section of the one or more frames; transporting the one or more frames across a network by generating a plurality of optical subcarriers carrying the one or more frames; extracting the overhead data from the frame overhead section of the one or more frames; recovering the client data from the one or more frames; inserting the extracted overhead data into the recovered client data to create modified client data; and outputting the modified client data.
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公开(公告)号：US20250038854A1
公开(公告)日：2025-01-30
申请号：US18421963
申请日：2024-01-24
Applicant: Infinera Corporation
Inventor： Christopher Fludger
Abstract: [Consistent with the present disclosure an apparatus and related method are provided for controlling the leaf-receiver local oscillator laser and leaf-transmitter laser for cases where separate transmit and receive local oscillator lasers are included in a transceiver. As a result, full capacity in bidirectional transmission can be realized on a single fiber. The leaf local oscillator frequency is controlled using a feedback signal generated based on an output from the leaf-digital signal processor (DSP), and the leaf transmit laser is controlled using a feedback signal based on an output of the remote hub-DSP, which is carried from the hub to the leaf nodes by a general communication channel (GCC) as part of a data signal, or a separate subcarrier also referred to as an auxiliary channel or out-of-band channel. This ensures that the frequencies transmitted subcarriers from the leaf nodes do not collide or overlap with one another in frequency.
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公开(公告)号：US12063074B2
公开(公告)日：2024-08-13
申请号：US17817253
申请日：2022-08-03
Applicant: Infinera Corp.
Inventor： Magnus Olson , Amir Rashidinejad , Jia Ge
IPC: H04B10/63 , H04B10/40 , H04W72/0453
CPC classification number: H04B10/63 , H04B10/40 , H04W72/0453
Abstract: A method is described in which a coherent transmitter transmits a first optical signal having customer data through a fiber optic link. A control signal is provided to the coherent transmitter to cause the coherent transmitter to transmit a second optical signal devoid of customer data. A reflection of the second optical signal is detected via the coherent receiver. Then, a chromatic dispersion of the reflection of the second optical signal is determined and correlated with known parameters indicative of an amount of chromatic dispersion per unit length of the fiber optic link to determine a distance travelled by the second optical signal.
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公开(公告)号：US12047163B2
公开(公告)日：2024-07-23
申请号：US17527137
申请日：2021-11-15
Applicant: Infinera Corporation
Inventor： Christopher Fludger , Syed Muhammad Bilal , Demin Yao , Xiang Chen , Han Henry Sun , Byungyoon Min , William Isaac , Zihao Liu , Yuanqing Li
CPC classification number: H04J14/0257 , H04B10/504 , H04B10/54 , H04J14/0272
Abstract: 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 plurality of optical subcarriers also being amplitude modulated to carry control information.
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公开(公告)号：US11996884B1
公开(公告)日：2024-05-28
申请号：US17527102
申请日：2021-11-15
Applicant: Infinera Corporation
Inventor： Vinod Narippatta , Ting-Kuang Chiang , Tulasi Veguru , Scott Pringle
IPC: H04B10/079 , H04B10/40 , H04L49/90
CPC classification number: H04B10/0795 , H04B10/40 , H04L49/90
Abstract: Systems, methods, devices, and other implementations for minimizing latency asymmetries and variations in a bi-directional link between two nodes in a communication system are described. To determine a variable latency for communication between two network nodes, a transmitting node can insert a line marker and a client marker into the data to be transmitted to the receiving node. The line marker and client marker can be inserted into the data at different portions or by different components of a transmitter. The receiving node can receive the transmitted data and extract the line marker and client marker. A delay associated with the line and client markers (Tc-TL) in the transmission device and a delay between the reception of the line and clien markers (Rc-RL) at the receiving node can be used to determine the variable latency.
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公开(公告)号：US11979186B2
公开(公告)日：2024-05-07
申请号：US17929170
申请日：2022-09-01
Applicant: Infinera Corp.
Inventor： Ankur Neog , Zhong Pan , Baranidhar Ramanathan
IPC: H04B10/079 , G06N3/082
CPC classification number: H04B10/07953 , G06N3/082
Abstract: Disclosed herein are methods and systems for computing a launch power for an optical node by collecting data for an optical network segment and inputting the collected data and first power spectral density values into a machine learning model which are used to compute a first non-linear interference value. A first generalized-optical signal-to-noise ratio value is computed using the computed first non-linear interference value and amplified spontaneous emission values. At least one second generalized-optical signal-to-noise ratio value is computed using at least one second non-linear interference value, computed using at least one second power spectral density values, and the amplified spontaneous emission values. A highest generalized-optical signal-to-noise ratio value is determined by comparing the first generalized-optical signal-to-noise ratio value and the at least one second generalized-optical signal-to-noise ratio value. A launch power is computed using the power spectral density values associated with the highest generalized-optical signal-to-noise ratio.
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公开(公告)号：US11943121B2
公开(公告)日：2024-03-26
申请号：US17840875
申请日：2022-06-15
Applicant: Infinera Corp.
Inventor： Praveen Kumar Pal , Dharmendra Naik , Madhav Kothapalli
IPC: H04L43/045 , H04L43/0817 , H04L43/0894
CPC classification number: H04L43/045 , H04L43/0817 , H04L43/0894
Abstract: A network element is herein disclosed. The network element comprises an embedded device having one or more property affecting a function of the embedded device; a computing system having a processor and a memory, the memory being a non-transitory computer-readable medium storing a performance monitoring domain agent, a performance monitoring collector daemon, and a performance monitoring logger. The performance monitoring collector daemon is processor-executable code that when executed by the processor causes the processor to communicate with the embedded device and collect one or more performance information of the embedded device based on the one or more property. The performance monitoring domain agent is processor-executable code that when executed by the processor causes the processor to: retrieve the performance information from the performance monitoring collector daemon; format the performance information into a formatted data based on a metrics metadata file; and transmit the formatted data to the performance monitoring logger.
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公开(公告)号：US11868704B2
公开(公告)日：2024-01-09
申请号：US15639994
申请日：2017-06-30
Applicant: Infinera Corporation
Inventor： Mohit Misra , Prakash Singh Bisht , Ashwini Kumar Bhat
CPC classification number: G06F40/14 , G06F16/13 , H04L12/56 , H04L45/10 , H04L45/48 , G06F8/41 , H04L12/66
Abstract: Systems, methods, and devices for encoding and decoding a packet buffer for data exchange over a communications network, including parsing a data container definition file to determine a packet format; generating a code file based on the data container definition file; inserting the code file into a source tree of an application; compiling the source tree to generate an executable file; and executing the executable on a computing device in communication with the communications network, wherein the executable file encodes and decodes the packet buffer for data exchange over the communications network.
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公开(公告)号：US11855754B2
公开(公告)日：2023-12-26
申请号：US16730562
申请日：2019-12-30
Applicant: Infinera Corporation
Inventor： Kuang-Tsan Wu , Han Henry Sun , Steven Joseph Hand , David F. Welch
Abstract: Methods, systems, and apparatus for subcarrier modulation with radio frequency inphase-quadrature (IQ) modulators. A system includes a plurality of IQ modulators, each configured to receive an input electrical signal comprising an inphase signal and a quadrature signal, and each configured to modulate the inphase signal and quadrature signal based on one of a plurality of local oscillator signals to output a multiplexed signal. Each of the plurality of local oscillator signals is supplied by a respective one of a plurality of local oscillator circuits. A modulator circuit is configured to modulate a carrier optical signal from a laser having a frequency ωc based on the multiplexed signal to generate a modulated optical signal centered at frequency ωc and comprising a plurality of subcarriers. A center frequency of each of the plurality of subcarriers is offset from ωc by a frequency of said one of the plurality of local oscillator signals.
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公开(公告)号：US11838052B2
公开(公告)日：2023-12-05
申请号：US17561768
申请日：2021-12-24
Applicant: Infinera Corporation
Inventor： Steven J. Hand
CPC classification number: H04B10/27 , H04J14/0227
Abstract: 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.
