公开(公告)号：US20230388041A1

公开(公告)日：2023-11-30

申请号：US17752832

申请日：2022-05-24

Applicant: Infinera Corporation

Inventor： Jeffrey T. Rahn ,  Kuang-Tsan Wu ,  Steven Joseph Hand ,  Han Henry Sun

IPC: H04J14/02 ,  H04Q11/00

CPC classification number: H04J14/0246 ,  H04J14/0282 ,  H04Q11/0067

Abstract: Optical network systems and components are disclosed, including a transmitter comprising a digital signal processor that receives data; circuitry that generate a plurality of electrical signals based on the data; a plurality of filters, each of which receiving a corresponding one of the plurality of electrical signals, a plurality of roll-off factors being associated with a respective one of the plurality of filters; a plurality of DACs that receive outputs from the digital signal processor, the outputs being indicative of outputs from the plurality of filters; a laser that supplies light; and a modulator that receives the light and outputs from the DACs, and supplies a plurality of optical subcarriers based on the outputs, such that one of the optical subcarriers has a frequency bandwidth that is wider than remaining ones of the optical subcarriers, said one of the optical subcarriers carrying information for clock recovery.

公开(公告)号：US20230198626A1

公开(公告)日：2023-06-22

申请号：US18108712

申请日：2023-02-13

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

CPC classification number: H04B10/564 ,  H04B10/516 ,  H04B10/616 ,  H04L1/0041

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：US20230135594A1

公开(公告)日：2023-05-04

申请号：US18091838

申请日：2022-12-30

Applicant: Infinera Corporation

Inventor： Jeffrey T. Rahn ,  Kuang-Tsan Wu ,  Steven Joseph Hand ,  Han Henry Sun

IPC: H04J14/02 ,  H04Q11/00

Abstract: Optical network systems and components are disclosed, including a transmitter comprising a digital signal processor that receives data; circuitry that generate a plurality of electrical signals based on the data; a plurality of filters, each of which receiving a corresponding one of the plurality of electrical signals, a plurality of roll-off factors being associated with a respective one of the plurality of filters; a plurality of DACs that receive outputs from the digital signal processor, the outputs being indicative of outputs from the plurality of filters; a laser that supplies light; and a modulator that receives the light and outputs from the DACs, and supplies a plurality of optical subcarriers based on the outputs, such that one of the optical subcarriers has a frequency bandwidth that is wider than remaining ones of the optical subcarriers, said one of the optical subcarriers carrying information for clock recovery.

公开(公告)号：US20230066541A1

公开(公告)日：2023-03-02

申请号：US17895846

申请日：2022-08-25

Applicant: Infinera Corporation

Inventor： Steven Joseph Hand ,  Vasudha Bhaskara ,  Mika Silvola ,  Dirk Corsus ,  Mats Plantare ,  Per Lembre ,  David F. Welch

IPC: H04Q11/00 ,  H04B10/40 ,  H04J14/02

Abstract: Implementations for remotely managing an optical transceiver connected to a network device and optical network is described. A user can use a network device controller and optical transceiver controller in a remote server to communicate with the service agent in the network device and the optical transceiver to configure communications with the optical network through the optical transceiver. The service agent and its controller in the server can perform virtualized transport functions and the network device controller and the network device can, in some instances, implement layer 2/3 demarc.

公开(公告)号：US11539430B2

公开(公告)日：2022-12-27

申请号：US16809504

申请日：2020-03-04

Applicant: Infinera Corporation

Inventor： Amir Jafari ,  David F. Welch ,  Steven Joseph Hand ,  Mohamed Osman

IPC: 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

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.

公开(公告)号：US11463175B2

公开(公告)日：2022-10-04

申请号：US17076437

申请日：2020-10-21

Applicant: Infinera Corporation

Inventor： Steven Joseph Hand

IPC: H04B10/548 ,  H04B10/61 ,  H04B10/50 ,  H04B10/54 ,  H04B10/032 ,  H04J14/02

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：US20220103258A1

公开(公告)日：2022-03-31

申请号：US17402348

申请日：2021-08-13

Applicant: Infinera Corporation

Inventor： Vasudha N. Bhaskara ,  Steven Joseph Hand ,  Rajan Rao

IPC: H04B10/27 ,  H04B10/40

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：US20210111788A1

公开(公告)日：2021-04-15

申请号：US17076449

申请日：2020-10-21

Applicant: Infinera Corporation

Inventor： Steven Joseph Hand

IPC: H04B10/032

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：US20200287651A1

公开(公告)日：2020-09-10

申请号：US16809426

申请日：2020-03-04

Applicant: Infinera Corporation

Inventor： Amir Jafari ,  Kuang-Tsan Wu ,  David F. Welch ,  Steven Joseph Hand ,  Mohamed Osman

IPC: H04J14/08

Abstract: 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.

公开(公告)号：US11942997B2

公开(公告)日：2024-03-26

申请号：US17383395

申请日：2021-07-22

Applicant: Infinera Corporation

Inventor： Paul N. Freeman ,  Paul Gavrilovic ,  Steven Joseph Hand

IPC: H04B10/00 ,  H01S5/026 ,  H01S5/06 ,  H01S5/068 ,  H01S5/12 ,  H04B10/61 ,  H04J14/00

CPC classification number: H04B10/6164 ,  H01S5/026 ,  H01S5/0612 ,  H01S5/068 ,  H01S5/1234

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.