Patents Assigned to Infinera Corporation
  • Publication number: 20200280566
    Abstract: A method of executing in-session encryption verification includes receiving a plurality of client data packets for transmission through a network; receiving one or more test data packets for verifying an encryption device; merging the client data packets and the one or more test packets into a data stream; selecting security parameters for each packet in the data stream based on a corresponding packet type; encrypting each packet in the data stream using the encryption device and the corresponding security parameters; and transmitting the data stream comprising encrypted packets through the network. The method also includes decrypting the encrypted packets at a receiving system using congruent techniques.
    Type: Application
    Filed: February 20, 2020
    Publication date: September 3, 2020
    Applicants: Oracle International Corporation, Infinera Corporation
    Inventors: Kannan Raj, Jagwinder Singh Brar, Abhinava Sadasivarao, Radhakrishna Valiveti, Sharfuddin Syed, Loukas Paraschis
  • Patent number: 10742328
    Abstract: Consistent with an aspect of the present disclosure, electrical signals or digital subcarriers are generated in a DSP based on independent input data streams. Drive signals are generated based on the digital subcarriers, and such drive signals are applied to an optical modulator, including, for example, a Mach-Zehnder modulator. The optical modulator modulates light output from a laser based on the drive signals to supply optical subcarriers corresponding to the digital subcarriers. These optical subcarriers may be received by optical receivers provided at different locations in an optical communications network, where the optical subcarrier may be processed, and the input data stream associated with such optical subcarrier is output. Accordingly, instead of providing multiple lasers and modulators, for example, data is carried by individual subcarriers output from an optical source including one laser and modulator. Thus, a cost associated with the network may be reduced.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: August 11, 2020
    Assignee: Infinera Corporation
    Inventors: Kuang-Tsan Wu, Matthew L. Mitchell
  • Patent number: 10735092
    Abstract: An optical network is described that has a first ROADM node, a second ROADM node, and an optical transmission line establishing optical communication between the first ROADM node and the second ROADM node. The optical transmission line including an in-line amplifier node having a total input power and a total output power. The in-line amplifier node has a first monitoring tool configured to measure input optical power of the in-line amplifier node, and a second monitoring tool configured to measure output optical power of the in-line amplifier node. A software defined L0 network controller has circuitry configured to receive the optical power measured by the first and second monitoring tools from the in-line amplifier node, and to configure at least one of a gain and a gain tilt of the in-line amplifier node.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: August 4, 2020
    Assignee: Infinera Corporation
    Inventors: Omer F. Yilmaz, Stephane St-Laurent, Steve Sanders, Matthew L. Mitchell
  • Patent number: 10727936
    Abstract: Methods, systems, and optical power controllers are disclosed. Various problems caused by the use of a single L0 power controller in the prior art are addressed by using first and second L0 power controllers with the first L0 power controller managing first optical components with the optical network, and the second L0 power controller managing second optical components within the optical network.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: July 28, 2020
    Assignee: Infinera Corporation
    Inventors: Omer F. Yilmaz, Stephane St-Laurent, Steve Sanders, Matthew L. Mitchell
  • Patent number: 10707965
    Abstract: A device may include a substrate. The device may include a carrier mounted to the substrate. The device may include a transmitter photonic integrated circuit (PIC) mounted on the carrier. The transmitter PIC may include a plurality of lasers that generate an optical signal when a voltage or current is applied to one of the plurality of lasers. The device may include a first microelectromechanical structure (MEMS) mounted to the substrate. The first MEMS may include a first set of lenses. The device may include a planar lightwave circuit (PLC) mounted to the substrate. The PLC may be optically coupled to the plurality of lasers by the first set of lenses of the first MEMS. The device may include a second MEMS, mounted to the substrate, that may include a second set of lenses, which may be configured to optically couple the PLC to an optical fiber.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: July 7, 2020
    Assignee: Infinera Corporation
    Inventors: Timothy Butrie, Michael Reffle, Xiaofeng Han, Mehrdad Ziari, Vikrant Lal, Peter W. Evans, Fred A. Klsh, Jr., Donald J. Pavinski, Jie Tang, David Coult
  • Patent number: 10694271
    Abstract: Methods and systems are disclosed for optical network link traversal, including a method comprising the steps of receiving, by a traverser software module for an optical network, from a first node in a network link defining a path in the optical network, one or more node sets indicative of one or more of a second node also in the network link; determining, with the traverser software module, an order of traversal of the one or more node sets; traversing the network link using the determined order of traversal; communicating, by the traverser software module, information with a feature manager software module for a first software feature, the first software feature configured to perform a function specific to a specific node; and triggering, by the feature manager software module, the first software feature to execute one or more computer executable instruction based on information from the traverser software module.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: June 23, 2020
    Assignee: Infinera Corporation
    Inventors: Santanu Sen, Thirumala Raju Mone
  • Patent number: 10623105
    Abstract: In an asynchronous optical modulation system, a drive circuit may generate a plurality of dither tones in accordance with a predetermined dither frequency ratio. Based on the components of the dither frequency ratio, the optical modulation system may be configured to determine a feedback signal magnitude component that is independent of the delay ? and a feedback signal sign component that is also independent of the delay ?. A feedback signal that is independent of the delay ? can then be reconstructed based on the feedback signal magnitude component and the feedback signal sign component.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: April 14, 2020
    Assignee: Infinera Corporation
    Inventors: Rene Marcel Schmogrow, Arseny Vasilyev, Charles Chen
  • Patent number: 10601520
    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.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: March 24, 2020
    Assignee: Infinera Corporation
    Inventors: Han Henry Sun, Kuang-Tsan Wu, Steven Joseph Hand, Jeffrey T. Rahn
  • Patent number: 10602246
    Abstract: Embodiments herein include methods and apparatuses for providing optical channel protection by a switching controller in an optical networking system. The switching controller may receive, from a light module, a digital fault status message that indicates whether a digital frame demodulated from an optical signal include a fault. The switching controller may receive from an Optical Supervisory Channel (OSC) module, an Optical Layer Defect Propagation (OLDP) status message that indicates an OSC status of the optical signal on a current optical path. The switching controller may receive, from an Optical Add Drop Multiplexer (OADM) module, an optical power status message that indicates a measured power level of the optical signal on the optical path. Based on at least one of the OLDP status, the optical power status, or the digital fault status message, the switching controller may determine the optical path as a working path or a protecting path.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: March 24, 2020
    Assignee: Infinera Corporation
    Inventors: Rajan Rao, Nikhil Kumar Satyarthi, Ashok Kunjidhapatham, Baranidhar Ramanathan, Biao Lu
  • Patent number: 10587500
    Abstract: Memory devices, methods and systems are described in which a non-transitory memory device stores instructions that, when executed by a processor, cause the processor to: receive, via an input component, at least one message from a network element in a multi-layer network comprising information indicative of at least one failure of a working path; determine based at least in part on information indicative of a data transport path coincident with the working path in a second layer in the network different from the first layer, an alternate path in the first layer for transmission of the data through the multi-layer network; and transmit, via an output component, at least one signal comprising configuration instructions to at least one line module, the configuration instructions directing the line module to switch and transmit the data using the alternate path.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: March 10, 2020
    Assignee: Infinera Corporation
    Inventors: Abishek Gopalan, Rajan Rao, Biao Lu
  • Patent number: 10574362
    Abstract: A system and method are disclosed to characterize and correct for the effects of IQ skew and insertion loss in a coherent optical transmitter. The coherent optical transmitter receives a digital data signal including in-phase (I) and quadrature (Q) components and generates corresponding first and second dither signals. The first dither signal may be combined with the I component and the second dither signal may be combined with the Q component to generate I and Q combined signals, which may be converted into I and Q analog waveforms. An optical signal may be generated corresponding to the I and Q analog waveforms for transmission over an optical fiber. The IQ skew and/or insertion loss for the coherent optical transmitter may then be calculated based on the optical signal using the disclosed dither tone processing techniques in order to correct IQ skew and/or insertion loss impairment.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: February 25, 2020
    Assignee: Infinera Corporation
    Inventors: Chen Chen, Rene Marcel Schmogrow
  • Patent number: 10560184
    Abstract: Systems and methods are disclosed, including an optical switching system comprising an upstream optical signal detector between a first node and a second node configured to detect optical signals from the second node and to switch data traffic from a working path to a protecting path when optical signals from the second node are indicative of a failure in the working path; wherein the first node is configured to transmit data traffic in first optical signals with wavelengths in channels in a first band and receive the data traffic in second optical signals with wavelengths in channels in a second band from the second node; and one or more optical filter, between the second node and the upstream optical signal detector, configured to block signals with wavelengths in the first band that are reflected because of a break in the path between the optical filter and the second node.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: February 11, 2020
    Assignee: Infinera Corporation
    Inventors: Bengt Johansson, Ola Wikström
  • Patent number: 10547403
    Abstract: Methods and systems are disclosed including a system comprising a first node, having a first transceiver comprising a first receiver and a first transmitter, comprising a tunable laser, configured to transmit a first optical signal on a first channel and to transmit a second optical signal on a second channel if the first receiver does not detect a third optical signal; a second node having a second transceiver comprising a second receiver and a second transmitter configured to transmit the third optical signal on the first channel if the second receiver detects the second optical signal; and a filter having ports configured to a particular bandwidth and to suppress the first optical signal if the first optical signal is not within the particular bandwidth of the port, and to transmit the second optical signal to the second node if the second optical signal is within the particular bandwidth.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: January 28, 2020
    Assignee: Infinera Corporation
    Inventors: Magnus Olson, Einar In de Betou
  • Patent number: 10542336
    Abstract: A method and apparatus for optimizing optical transport using a software defined network (SDN) controller are disclosed herein. The SDN controller may define a margin optimization function based on at least one optical system performance metric. The function may include at least one related initiation criterion. Further, the SDN controller may collect at least one measurement for the performance metric. The measurement may include an assessment of deployed carriers not carrying client data. The SDN controller may determine whether the initiation criterion is met based on at least one collected measurement. The SDN controller may select a system margin optimization mechanism and define a system margin optimization threshold criterion on a condition that the initiation criterion is met. The SDN controller may determine whether the optimization threshold criterion is met. The SDN controller may implement one or more optimization events on a condition that the optimization threshold criterion is met.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: January 21, 2020
    Assignee: Infinera Corporation
    Inventors: Loukas Paraschis, Harshad Sardesai, Abhinava Shivakumar Sadasivarao, Parthiban Kandappan, Marco Sosa
  • Publication number: 20190391348
    Abstract: An optical transceiver package comprising a transceiver module, a digital signal processor (DSP), a substrate supporting the transceiver module and the DSP, and a barrier to mechanically protect and thermally insulate the transceiver module. The substrate comprises a material having a coefficient of thermal expansion (CTE) of 2.3-14 ppm/° C. and the barrier comprises a material having a CTE of 3.5-14 ppm/° C.
    Type: Application
    Filed: February 19, 2019
    Publication date: December 26, 2019
    Applicant: Infinera Corporation
    Inventors: John Osenbach, Jiaming Zhang, Xiaofeng Han, Timothy Butrie, Fred Kish, JR.
  • Patent number: 10516579
    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.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: December 24, 2019
    Assignee: Infinera Corporation
    Inventors: Jayaram Hanumanthappa, Naresh Kumar, Naresh Srinivasulu Jayam, Arijit Mandal, Gounda Mohammed Nabi Saheb, Alok Jain, Steven Joseph Hand
  • Patent number: 10498478
    Abstract: Methods, systems, and devices for implementing optical interface and multiplexing devices. An input optical signal is received over an input fiber by an optical interface device. A modulated optical signal and an unmodulated optical signal are demultiplexed from the input optical signal, the unmodulated optical signal is modulated based on a data signal to generate an output optical signal; and the output optical signal is transmitted over an output fiber. A modulated optical signal is received over a network connection from an optical network by an optical multiplexing device. An unmodulated optical signal is generated using a generator device; the unmodulated optical signal and a signal that includes the modulated optical signal are multiplexed using an optical multiplexer to generate an output signal; and the output signal is transmitted over an output fiber to the optical interface device.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: December 3, 2019
    Assignee: Infinera Corporation
    Inventor: Jeffrey T. Rahn
  • Patent number: 10491542
    Abstract: A method and apparatus for the efficient dynamic allocation of additional bandwidth in an optical virtual private network (OVPN) are described herein. A software defined network (SDN) controller may receive a request from an end-user of an OVPN for active bandwidth. Then, the SDN controller may determine whether the OVPN requires additional bandwidth to satisfy the request. As of the request, the additional bandwidth may be pre-deployed, but not yet activated for use. In an example, a path computation element (PCE) of the SDN controller may make this determination. Further, the SDN controller, on a condition that additional bandwidth is required, may determine whether additional bandwidth may be activated based on a policy of the end-user. As a result, the SDN controller, on a condition that additional bandwidth may be activated, may transmit an activation message to one or more line cards of the OVPN to activate the additional bandwidth.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: November 26, 2019
    Assignee: Infinera Corporation
    Inventors: Christopher Liou, Balaji Balasubramanian, Mahidhar Rajala, Srinivasan Seetharaman, Anurag Sharma, Sri Mohana Satya Srinivas Singamsetty
  • Patent number: 10476230
    Abstract: Consistent with the present disclosure, an apparatus for producing a control signal for a laser source is provided, comprising an etalon configured to receive light from the laser source and control circuitry that provides the control signal, wherein the control signal is indicative of a comparison of (a) a difference between a forward transmission signal of the etalon and a backward reflection signal of the etalon and (b) the light received by the etalon from the laser source. Alternatively, the control signal is indicative of a comparison of (a) a difference between a forward transmission signal of the etalon and a backward reflection signal of the etalon and (b) a combination of the forward transmission signal of the etalon and the backward reflection signal of the etalon.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: November 12, 2019
    Assignee: Infinera Corporation
    Inventors: Xiaofeng Han, Timothy Butrie, David Coult
  • Publication number: 20190339468
    Abstract: Consistent with the present disclosure, one or more spare Widely Tunable Lasers (WTLs) are integrated on a PIC. In the event that a channel, including, for example, a laser, a modulator and a semiconductor optical amplifier in a transmitter or Tx PIC, or a laser, optical hybrid, and photodiodes, for example, in a receiver PIC (Rx PIC), includes one or more defective devices, a spare channel is selected that includes a widely tunable laser (WTL) which may be tuned to the wavelength associated with any of the channels on the PIC. Accordingly, the spare channel replaces the defective channel or the lowest performing channel and outputs modulated optical signals at the wavelength associated with the defective channel. Thus, even though a defective channel may be present, a die consistent with the present disclosure may still output or receive the desired channels because the spare channel replaces the defective channel.
    Type: Application
    Filed: May 7, 2018
    Publication date: November 7, 2019
    Applicant: Infinera Corporation
    Inventors: Peter W. Evans, Fred A. Kish, JR., Vikrant Lal, Jacco Pleumeekers, Timothy Butrie, David G. Coult, John W. Osenbach, Jie Tang, Jiaming Zhang