Circuit diagnostic manager
Granted: October 17, 2017
Patent Number:
9794658
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…
End-to-end provisioning of Ethernet Virtual Circuits
Granted: October 10, 2017
Patent Number:
9787607
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…
Photonic integrated circuit (PIC) and silicon photonics (SIP) circuitry device
Granted: October 10, 2017
Patent Number:
9784933
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…
Providing ownership-based view and management of shared optical network resources
Granted: September 19, 2017
Patent Number:
9769087
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…
Digital service path viewer
Granted: September 19, 2017
Patent Number:
9769031
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…
Arbitrary wavelocking of an optical transmitter using embedded data sequences
Granted: September 19, 2017
Patent Number:
9768865
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…
Systems, apparatus, and methods for a configurable gearbox
Granted: September 5, 2017
Patent Number:
9756406
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.
Supporting OAM on protecting connections in shared mesh protection environment
Granted: September 5, 2017
Patent Number:
9755937
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.
System and method for automatic bandwidth management
Granted: August 22, 2017
Patent Number:
9742490
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…
Reduction of wavelength selective switch (WSS) filter-based impairment using selective subcarrier adjustment
Granted: August 15, 2017
Patent Number:
9735913
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…
Systems and methods for discovery of a controller in openflow networks
Granted: August 8, 2017
Patent Number:
9729948
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…
High-capacity switch
Granted: August 8, 2017
Patent Number:
9729946
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…
Using artificial justifications to apply noise shaping to actual justifications associated with mapping client data
Granted: August 8, 2017
Patent Number:
9729245
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…
Polarization tracking using signal tone information while keeping least mean squares frequency domain equalization
Granted: July 25, 2017
Patent Number:
9716564
A digital signal processor (DSP) of an optical receiver may receive information representing a polarization multiplexed signal including tone information. The polarization multiplexed signal may have an uncorrected state of polarization (SOP). The DSP may determine sets of Stokes parameters based on the tone information. The DSP may determine a set of polarization parameters based on the sets of Stokes parameters. The DSP may apply, based on the set of polarization parameters, a set of…
Clamp interconnect
Granted: July 18, 2017
Patent Number:
9711879
An apparatus including a bridge member and a clamp is disclosed. The bridge member is positioned in a first plane and has a substrate with a first surface and a second surface; and a plurality of distinct conductive pillars formed on the second surface of the substrate. The clamp has a body, a proximal end and a distal end. The body is positioned in a second plane above the first plane with the second plane being within 2 degrees of parallel to the first plane. The proximal end is…
Distributing control plane processing
Granted: July 11, 2017
Patent Number:
9705822
A network device includes shelf controllers and interface unit controllers. An interface unit controller, of the interface unit controllers, is configured to receive a message from a different network device; determine whether a session exists for the message; identify a shelf controller, of the shelf controllers, based on the session when the session exists for the message; select the shelf controller, to receive the message, based on a load or mapping of the shelf controller when the…
Demand advertisement method for shared mesh protection path computation
Granted: July 11, 2017
Patent Number:
9705786
A method includes the steps of: (1) generating, by circuitry of a first node, an advertising message including (a) a working path bandwidth demand; (b) an identification of at least two communication links in a shared risk link group of the working path; and (c) at least one protecting path and a bitmap indicative of failure of at least one first communication link in the shared risk link group that causes the at least one protecting path to be used; and (2) transmitting the advertising…
In-service skew monitoring in a nested Mach-Zehnder modulator structure using pilot signals and balanced phase detection
Granted: July 11, 2017
Patent Number:
9705592
An apparatus is provided. The apparatus may include a drive circuit that selectively supplies a first plurality of electrical signals and a second plurality of electrical signals to a modulation circuit. Based on the first plurality of electrical signals, the modulation circuit may output a first in-phase component being modulated in accordance with a first tone having a first frequency and a first quadrature component being modulated in accordance with a second tone having a second…
Tracking nonlinear cross-phase modulation noise and linewidth induced jitter in coherent optical fiber communication links
Granted: June 6, 2017
Patent Number:
9673911
An optical receiver may include a digital signal processor to receive an input sample that includes transmitted data, transmitted by an optical transmitter, and nonlinear distortion. The digital signal processor may process the input sample to generate an estimated data value. The estimated data value may be an estimate of the transmitted data. The digital signal processor may remove the estimated data value from the input sample to generate a noise sample. The digital signal processor…
Reduction of wavelength selective switch (WSS) filter-based impairment using multi-channel forward error correction averaging via interleaving
Granted: May 23, 2017
Patent Number:
9661407
A method may include interleaving, by an optical device, a set of bits of a first channel with a set of bits of a second channel. The first channel may include first forward error correction (FEC) data associated with the set of bits of the first channel and the second channel may include second FEC data associated with the set of bits of the second channel. The method may further include transmitting first information via the first channel and second information via the second channel.…
