公开(公告)号：US11563498B2

公开(公告)日：2023-01-24

申请号：US17077811

申请日：2020-10-22

Applicant: Infinera Corporation

Inventor： Steven Joseph Hand

IPC: H04B10/032 ,  H04B10/548 ,  H04B10/61 ,  H04B10/50 ,  H04B10/54 ,  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：US11496217B2

公开(公告)日：2022-11-08

申请号：US17134023

申请日：2020-12-24

Applicant: Infinera Corporation

Inventor： Steven Joseph Hand ,  Tulasi Veguru ,  Prasad Paranjape ,  Han Henry Sun

IPC: H04B10/118 ,  H04B10/61 ,  H04B10/50 ,  H04B10/29 ,  H04B10/40 ,  H04B10/516

Abstract: An example apparatus includes a first communications module having a first transceiver. The first communications module is operable to transmit, using the first transceiver, a plurality of first groups of optical subcarriers to a plurality of second communications modules 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 one of the second communications modules. The first communications module is also operable to receive, using the first transceiver, plurality of second groups of optical subcarriers from the second communications modules 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 one of the second communications modules.

公开(公告)号：US20220352989A1

公开(公告)日：2022-11-03

申请号：US17845934

申请日：2022-06-21

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：US11451303B2

公开(公告)日：2022-09-20

申请号：US17077798

申请日：2020-10-22

Applicant: Infinera Corporation

Inventor： Steven Joseph Hand

IPC: H04J14/02 ,  H04B10/548 ,  H04B10/61 ,  H04B10/50 ,  H04B10/54 ,  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：US10992389B2

公开(公告)日：2021-04-27

申请号：US16270584

申请日：2019-02-07

Applicant: Infinera Corporation

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

IPC: H04B10/516 ,  H04B10/50 ,  H04J14/02 ,  H04B10/61 ,  H04B10/2575

Abstract: Optical network systems and components are disclosed, including a transmitter comprising a digital signal processor receiving a plurality of independent data streams, and supplying a plurality of digital subcarrier outputs, based on the plurality of independent data streams, and configurable to vary the frequency spacing between two or more of the plurality of digital subcarrier outputs; the transmitter configured to output a modulated optical signal including a plurality of optical subcarriers based on the digital subcarrier outputs wherein based on first ones of the plurality of digital outputs, the first one of the plurality of subcarriers is spectrally spaced from the second one of the plurality subcarriers by a first gap, and based on second ones of the plurality of digital outputs, the first one of the plurality of subcarriers is spectrally spaced from the second one of the plurality of subcarriers by a second gap different than the first.

公开(公告)号：US20210111825A1

公开(公告)日：2021-04-15

申请号：US17076437

申请日：2020-10-21

Applicant: Infinera Corporation

Inventor： Steven Joseph Hand

IPC: 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：US20200287648A1

公开(公告)日：2020-09-10

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: H04J14/00 ,  H04B10/50 ,  H04B10/61 ,  H04L1/00

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：US20190245643A1

公开(公告)日：2019-08-08

申请号：US16270590

申请日：2019-02-07

Applicant: Infinera Corporation

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

IPC: H04J14/02 ,  H04B10/50 ,  H04B10/516

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.