-
公开(公告)号：US12160265B2
公开(公告)日：2024-12-03
申请号：US17134067
申请日：2020-12-24
Applicant: Infinera Corporation
Inventor： Steven Joseph Hand , Tulasi Veguru , Prasad Paranjape , Han Henry Sun
IPC: H04B10/00 , H04B10/118 , H04B10/29 , H04B10/40 , H04B10/50 , H04B10/516 , H04B10/61
Abstract: An example method is performed by a terrestrial control system communicatively coupled to a constellation of satellites. According to the method, instructions are transmitted to a first satellite of the constellation to transmit a plurality of first groups of optical subcarriers to a plurality of second satellites of the constellation via free-space optical communication. The first groups of optical subcarriers carry first data and each of the first groups of optical subcarriers is associated, respectively, with a different communications module of the second satellites. Further, instructions are transmitted to the second satellites to transmit a plurality of second optical subcarriers to the first satellite via free-space optical communication. The second groups of optical subcarriers carry second data and each of the second groups of optical subcarriers is associated, respectively, with a different communications module of the second satellites.
-
公开(公告)号：US11563495B2
公开(公告)日：2023-01-24
申请号：US17402348
申请日：2021-08-13
Applicant: Infinera Corporation
Inventor： Vasudha N. Bhaskara , Steven Joseph Hand , Rajan Rao
Abstract: Systems, devices, and techniques relating to optical communications are described. A described hub optical module includes an optical transceiver configured to communicate with edge optical modules of respective edge devices via an optical communication network, the edge optical modules comprising edge interfaces; and a controller coupled with the optical transceiver. The controller can be configured to provide, to a hub device, hub interfaces which are configurable to respectively correspond to different optical subcarriers transmitted from and received by the optical transceiver. The controller can advertise, to the hub device, an application select code to enable the hub device to configure an operational mode and to selectively enable each of the hub interfaces in the operational mode, store one or more associations among the hub interfaces and the edge interfaces, and configure one or more cross-connections among the hub interfaces and the optical subcarriers based on the one or more associations.
-
公开(公告)号：US11368228B2
公开(公告)日：2022-06-21
申请号：US16384842
申请日：2019-04-15
Applicant: Infinera Corporation
Inventor： Steven Joseph Hand , Ahmed Awadala , Luis A. Perez , Vincent G. Dominic , Kuang-Tsan Wu
IPC: H04B10/564 , H04L1/00 , H04B10/516 , H04B10/61
Abstract: Optical network systems are disclosed, including systems having transmitters with a digital signal processor comprising forward error correction circuitry that provides encoded first electrical signals based on input data; and power adjusting circuitry that receives second electrical signals indicative of the first electrical signals, the power adjusting circuitry supplying third electrical signals, wherein each of the third electrical signals is indicative of an optical power level of a corresponding to one of a plurality of optical subcarriers output from an optical transmitter.
-
公开(公告)号：US20220029709A1
公开(公告)日：2022-01-27
申请号：US17383395
申请日：2021-07-22
Applicant: Infinera Corporation
Inventor： Freeman N. Freeman , Paul Gavrilovic , Steven Joseph Hand
Abstract: Consistent with the present disclosure, a local oscillator is provided in a receiver. The local oscillator laser a first and second mirrors and phase section and heaters are provided adjacent each portion of the laser, such that the temperature and thus the frequency of light output from the local oscillator laser may be tuned. Applying electrical power, such as a current or voltage to the phase section may result in rapid frequency tuning of light output from the local oscillator laser but over a limited frequency range. Temperature changes to the mirror sections, however, may afford frequency tuning over a wider range, but frequency tuning the mirror sections requires more time than that required to tune the phase section. Consistent with the present disclosure, a tuning method and apparatus is provided that optimizes laser tuning by selectively tuning the phase and mirror sections.
-
公开(公告)号：US11218217B2
公开(公告)日：2022-01-04
申请号：US16809509
申请日：2020-03-04
Applicant: Infinera Corporation
Inventor： Amir Jafari , David F. Welch , Steven Joseph Hand , Mohamed Osman
IPC: 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
Abstract: 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.
-
Patent Agency Ranking
6.发明申请公开(公告)号：US20210111806A1
公开(公告)日：2021-04-15
申请号：US17077845
申请日：2020-10-22
Applicant: Infinera Corporation
Inventor： Steven Joseph Hand
IPC: H04B10/548 , H04B10/54 , H04B10/50 , H04B10/61
Abstract: An example system includes a first network device having first circuitry. The first network device is configured to perform operations including receiving data to be transmitted to a second network device over an optical communications network, and transmitting first information and second information to the second device. The first information is indicative of the data, and is transmitted using a first communications link of the optical communications network and using a first subset of optical subcarriers. The second information is indicative of the data, and is transmitted using a second communications link of the optical communications network and using a second subset of optical subcarriers. The first subset of optical subcarriers is different from the second subset of optical subcarriers.
-
7.发明申请公开(公告)号：US20210111805A1
公开(公告)日：2021-04-15
申请号：US17077811
申请日：2020-10-22
Applicant: Infinera Corporation
Inventor： Steven Joseph Hand
IPC: H04B10/548 , H04B10/54 , H04B10/50 , H04B10/61
Abstract: An example system includes a first network device having first circuitry. The first network device is configured to perform operations including receiving data to be transmitted to a second network device over an optical communications network, and transmitting first information and second information to the second device. The first information is indicative of the data, and is transmitted using a first communications link of the optical communications network and using a first subset of optical subcarriers. The second information is indicative of the data, and is transmitted using a second communications link of the optical communications network and using a second subset of optical subcarriers. The first subset of optical subcarriers is different from the second subset of optical subcarriers.
-
公开(公告)号：US20200287621A1
公开(公告)日：2020-09-10
申请号：US16809441
申请日：2020-03-04
Applicant: Infinera Corporation
Inventor： Amir Jafari , Kuang-Tsan Wu , David F. Welch , Steven Joseph Hand , Mohamed Osman
Abstract: 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.
-
公开(公告)号：US10516579B2
公开(公告)日：2019-12-24
申请号：US15378987
申请日：2016-12-14
Applicant: INFINERA CORPORATION
Inventor： Jayaram Hanumanthappa , Naresh Kumar , Naresh Srinivasulu Jayam , Arijit Mandal , Gounda Mohammed Nabi Saheb , Alok Jain , Steven Joseph Hand
Abstract: Techniques are disclosed herein for reconciling planned data for a network (such as a fiber optic network) with data describing the deployed network. Network probing and planning components obtain a snapshot of the deployed network and organize the snapshot into three “layers”: the “link layer,” which represents the physical links that underlie the network, the “digital layer,” which includes optical channel groups that divide the total capacity of the physical links, and the “service layer,” which includes the services delivered over the network. The techniques involve comparing the planned data to the deployed data in the order of link layer, digital layer, and service layer. Differences considered to be “minor” are reconciled automatically. Differences that are “major” are reconciled after receiving instructions from a planner or administrator regarding whether to update the planned data based on what was originally in the planned data or what is in the deployed network.
-
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.
-
-
-
-
-
-
-
-
-
Search Results
58
records
(took 0.022 seconds)
