Patents Assigned to Infinera Corporation
  • Publication number: 20170338887
    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: Application
    Filed: May 22, 2017
    Publication date: November 23, 2017
    Applicant: Infinera Corporation
    Inventors: Rajan Rao, Nikhil Kumar Satyarthi, Ashok Kunjidhapatham, Baranidhar Ramanathan, Biao Lu
  • Patent number: 9818670
    Abstract: A system includes a retainer assembly to align each of a group of cooling devices with a corresponding electrical component of a group of electrical components that are mounted to a circuit board, where the retainer assembly includes a group of apertures, such that each of the cooling devices protrudes through a corresponding aperture when the retainer assembly is installed on the circuit board, and where the retainer assembly includes a group of retaining springs, each of which is associated with a corresponding aperture, that applies a respective force, of a group of forces, to a corresponding one of the cooling devices when the retainer assembly is installed on the circuit board. The system also includes a set of fasteners to mount the retainer assembly to the circuit board, such that the cooling devices dissipate heat that is generated by the electrical components.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: November 14, 2017
    Assignee: Infinera Corporation
    Inventor: Thomas George Macall
  • Publication number: 20170324647
    Abstract: Methods, devices, and systems for mapping transport segment labels to packet network endpoints using a mapping server. In some implementations, an end point address in an edge domain is received from an edge router, a mapping of one of the end point address to a transport segment label is received from a network device, the mapping is stored in a non-transitory memory device, and the mapping is transmitted to the edge router.
    Type: Application
    Filed: December 6, 2016
    Publication date: November 9, 2017
    Applicant: Infinera Corporation
    Inventors: Madhukar Anand, Ramesh Subrahmaniam, Sanjoy Bardhan
  • Patent number: 9813358
    Abstract: An exemplary network controller may be configured to perform ARP mediation through passively learning MAC addresses on client sides and keeping track of IP/MAC/Attachment point associations, hijacking ARP requests received by the core nodes through a packet_in operation or a redirection to other agents, injecting proxy ARP replies that provide target MAC information without the actual target being involved, and possibly programming the network nodes with the static ARP responding rule for a specified duration.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: November 7, 2017
    Assignee: Infinera Corporation
    Inventors: Srini Seetharaman, Balaji Balasubramanian, Sri Mohana Satya Srinivas Singamsetty
  • Patent number: 9813071
    Abstract: A scaling apparatus and method for compensating nonlinearity due to the finite output impedance of current sources in current-steering digital-to-analog converters (DACs) are disclosed herein. In an example, a DAC may receive a digital input signal. The DAC may determine an output current weight for each of a plurality of unit cells, based on an output impedance of the unit cell. Further, the DAC may generate an analog output signal by applying the plurality of output current weights to the digital input signal. Then, the DAC may output the analog output signal. The analog output signal may be a high frequency analog output signal, which may be an optical high frequency analog output signal. In an example, a transfer curve of the analog output signal may be linear in terms of analog output signal voltage versus digital input code. The output current weights may include one or more polynomial terms.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: November 7, 2017
    Assignee: Infinera Corporation
    Inventors: Fu-Tai An, Vassili Kireev, Jeffrey Bostak
  • Patent number: 9806842
    Abstract: A device may perform a set of sample measurements of a set of slices of spectrum utilized by an input optical signal. The device may perform an analysis of the input optical signal to determine an attenuation profile. The analysis may include identifying a channel in a particular slice of spectrum, of the set of slices of spectrum, based on an optical power of a sample measurement, of the set of sample measurements, satisfying a threshold. The device may apply the attenuation profile to the input optical signal to generate an output optical signal with a particular spectral shape. The device may provide the output optical signal with the particular spectral shape.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: October 31, 2017
    Assignee: Infinera Corporation
    Inventors: Omer Faruk Yilmaz, Ankur Neog, Saurabh Kumar, Sanjeev Ramachandran
  • Patent number: 9800495
    Abstract: A method, performed in a network that includes a group of nodes, includes identifying a path through a set of the nodes, where each node, in the set of nodes, has a data plane and a control plane; establishing a control plane tunnel, associated with the path, within the control plane of the nodes in the set of nodes; establishing a data plane tunnel, associated with the path, within the data plane of the nodes in the set of nodes, where the data plane tunnel is associated with the control plane tunnel and established through the same set of nodes; and transmitting a control message through the control plane tunnel to change a state of the data plane tunnel.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: October 24, 2017
    Assignee: Infinera Corporation
    Inventors: Biao Lu, Jan Bialkowski, Edward E. Sprague, Parthiban Kandappan
  • Patent number: 9794658
    Abstract: A device may receive health information associated with a network circuit included in an optical network. The device may determine, based on the health information and network circuit information associated with the network circuit, that the network circuit is experiencing a health issue. The device may identify a diagnostic technique to be applied to the network circuit based on determining that the network circuit is experiencing the health issue. The device may automatically and iteratively apply the identified diagnostic technique to the network circuit in order to identify a fault location. The device may determine a corrective action, associated with the network circuit, based on the fault location and the health issue. The device may provide information associated with the corrective action to cause the corrective action to be taken.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: October 17, 2017
    Assignee: Infinera Corporation
    Inventors: Pydi Kasi Viswanadham, Lam D. Hoang, Naveen Narasimha Hegde, Pankaj Sajnani, Rajasekar Venkatesan, Yashpal Kumar
  • Patent number: 9787607
    Abstract: Methods and systems are disclosed for providing a signaling protocol to enable a bi-directional point-to-point Ethernet Virtual Circuits (EVC) to be configured between any two network elements, as part of a network infrastructure. The bi-directional EVC is established by configuration of a source network element and a destination network element, and defines a bi-directional data path across the network infrastructure therebetween. The EVC may include one or more network elements over which the data path may traverse. The methods and systems disclosed may be applied to linear, ring and mesh network topologies.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: October 10, 2017
    Assignee: Infinera Corporation
    Inventors: David Bumstead, Sharfuddin Syed
  • Patent number: 9784933
    Abstract: A device may include a first substrate. The device may include an optical source. The optical source may generate light when a voltage or current is applied to the optical source. The optical source may be being provided on a first region of the first substrate. The device may include a second substrate. A second region of the second substrate may form a cavity with the first region of the first substrate. The optical source may extend into the cavity. The device may include an optical interconnect. The optical interconnect may be provided on or in the second substrate and outside the cavity. The optical interconnect may be configured to receive the light from the optical source.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: October 10, 2017
    Assignee: Infinera Corporation
    Inventors: John W. Osenbach, Timothy Butrie, Fred A. Kish, Jr., Michael Reffle
  • Patent number: 9769031
    Abstract: A device may obtain first information related to a digital service that may identify a digital path. The digital path may include digital nodes and optical links, of an optical network, to provide the digital service. The device may determine second information based on the first information. The second information may describe a relationship between one or more digital services and one or more digital paths. The device may provide a graphical representation, via a user interface, of the one or more digital paths. The device may provide the second information in relation to the graphical representation. The device may detect a user interaction with the graphical representation. The user interaction may relate to one or more of the digital services and/or one or more of the digital paths. The device may cause the digital nodes and/or the optical links to be configured.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: September 19, 2017
    Assignee: Infinera Corporation
    Inventors: Ratna Priya, Pankaj Mishra, Gaurav Agarwal
  • Patent number: 9768865
    Abstract: An optical system includes an optical transmitter and a controller that determines a particular wavelength for a channel of the optical transmitter. The controller causes the optical transmitter to transmit a first optical signal with a first data sequence that is determined based on the particular wavelength, and determines a first optical power that is generated based on the first optical signal and the first data sequence. The controller causes the optical transmitter to transmit a second optical signal with a second data sequence that is determined based on the particular wavelength, and determines a second optical power that is generated based on the second optical signal and the second data sequence. The controller calculates a power difference between the first optical power and the second optical power, and causes the particular wavelength for the channel to be modified based on the calculated power difference.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: September 19, 2017
    Assignee: Infinera Corporation
    Inventor: Jeffrey T. Rahn
  • Patent number: 9769087
    Abstract: A device may receive optical network information associated with an optical network, and may determine a user associated with network resources of the optical network. The network resources may be shared for use by multiple users, including the user. The device may store the optical network information and information that identifies a relationship between the user and the network resources. The device may receive a request for at least a portion of the optical network information associated with the user and the network resources. The device may identify the network resources, associated with the user, based on storing the optical network information and the information that identifies the relationship The device may provide the at least the portion of the optical network information, including information associated with the network resources associated with the user, based on identifying the network resources.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: September 19, 2017
    Assignee: Infinera Corporation
    Inventors: Manish K. Agarwal, Naveen Narasimha Hegde, Pankaj Sajnani, Sudhanshu Verma
  • Patent number: 9756406
    Abstract: Systems, apparatus, and methods for a configurable gearbox with a variable number of input lanes and output lanes and a multiplexer for each output lane that can be configured to dynamically select any of the input lanes during each clock cycle.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: September 5, 2017
    Assignee: Infinera Corporation
    Inventor: Vinod Narippatta
  • Patent number: 9755937
    Abstract: A method for detecting the liveliness and synchronizing the control-plane and data-plane on protecting connections in a shared mesh network environment through methods for probing the protecting connection conditions by sending in-band messages; and synchronization of control plane and data plane by using LSP-ping messages on the protecting connections.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: September 5, 2017
    Assignee: Infinera Corporation
    Inventors: Sri Mohana Satya Srinivas Singamsetty, Ping Pan, Biao Lu, Rajan Rao
  • Patent number: 9742490
    Abstract: Systems and methods for automatically managing the bandwidth requirements of application workloads may include learning the bandwidth requirements using historical data, predicting the required bandwidth for a time interval and provisions the services to deliver the appropriate bandwidth to the applications. Systems and methods for automatically managing the bandwidth requirements of application workloads may also include monitoring for the actual bandwidth requirements of the applications and adapt dynamically to changing requirements.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: August 22, 2017
    Assignee: Infinera Corporation
    Inventors: Madhukar Anand, Ramesh Iyer
  • Patent number: 9735913
    Abstract: A method may include transmitting, by an optical device, a first channel. The first channel may have a first set of subcarriers. The first channel may be attenuated during transmission by a filter associated with a wavelength selective switch. The method may further include transmitting, by the optical device, a second channel. The second channel may have a second set of subcarriers. The second channel may be attenuated during transmission by the filter associated with the wavelength selective switch. The first channel and the second channel being included in a super-channel. The first set of subcarriers may be selected based on a first signal quality factor associated with attenuation of the first set of subcarriers by the filter. The second set of subcarriers may be selected based on a second signal quality factor associated with attenuation of the second set of subcarriers by the filter.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: August 15, 2017
    Assignee: Infinera Corporation
    Inventor: Matthew L. Mitchell
  • Patent number: 9729948
    Abstract: Systems and methods for discovery of a controller in an OpenFlow network may include using an OpenFlow capable switch to discover the controller without the help of other components, such as DHCP. The link discovery protocol may be configured on the switch and the discovery process may use an out-of-band or an in-band communication. In one example, a link discovery protocol packet is sent out of all ports of a switch that meet the eligibility criteria. The response is guaranteed because of a TTL like mechanism in the packet. Each port on a switch that receives this link discovery protocol packet takes an action depending on its current state.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: August 8, 2017
    Assignee: Infinera Corporation
    Inventors: Ramesh Subrahmaniam, Madhukar Anand, Balaji Balasubramanian
  • Patent number: 9729245
    Abstract: A transmitter may receive client data, associated with a client rate, to be mapped to frames associated with a server rate. The transmitter may generate justifications associated with the mapping of the client data to the frames. The transmitter may create, based on the justifications, artificial justifications that include information associated with justifications created to shape phase variations present in a recovered client clock associated with the client rate. The phase variations may be shaped based on the artificial justifications to cause shaped phase variations to be present in the recovered client clock. The shaped phase variations may include phase variations that can be filtered from the recovered client clock. The transmitter may map the client data to the frames based on the artificial justifications to cause the shaped phase variations to be present in the recovered client clock.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: August 8, 2017
    Assignee: Infinera Corporation
    Inventor: Ashok Jain
  • Patent number: 9729946
    Abstract: Consistent with the present disclosure, an optical switch is provided that switches multiple wavelength division multiplexed (WDM) optical signals. Each of the WDM signals includes optical signals having the same wavelengths. The WDM signals are supplied to optical splitters, which supply power split portions of the WDM signals to corresponding optical gates. Groups of the optical gates are associated with a corresponding switching block, which may include a cyclical arrayed waveguide grating (AWG), and the optical gates within each group are controlled so that one gate passes a received WDM signal portion while the remaining optical gates in the group are in a blocking configuration. As a result, the WDM portion received by the non-blocking gate is demultiplexed in the switching block and each of the wavelength components that constitute the selected WDM portion are supplied to corresponding outputs within the switching block.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: August 8, 2017
    Assignee: Infinera Corporation
    Inventors: Drew D. Perkins, Ting-Kuang Chiang, Curtis Villamizar