Abstract: A passive optical network system having a node that is optically coupled to optical line terminals (OLTs), and that is optically coupled to optical network units (ONUs). The node includes at least one fiber link module (FLM), each FLM including an upstream multiplex conversion device (MCD), and a downstream MCD. The upstream MCD receives an upstream optical signal from the ONUs, converts the upstream optical signal to an upstream electrical signal, and transmits a regenerated upstream optical signal to the OLTs. The downstream MCD receives a downstream optical signal from the OLTs, converts the downstream optical signal to a downstream electrical signal, and transmits a regenerated downstream optical signal to the ONUs.

Abstract: Disclosed is a signal conductor formed as a metal oxide varistor (MOV), the MOV having a first MOV and a second MOV separated by an insulator. In some embodiments, the disclosed signal conductor may be used in a system communicably coupled to a power transmission distribution network, the system capable of launching transverse electromagnetic waves onto a transmission line, where the electromagnetic waves propagating a data signal conveyed to the system by the MOV.

Abstract: Disclosed is a device communicably coupled to a power transmission line and capable of launching transverse electromagnetic waves onto the transmission line. The waves propagate data received from a data source connected to the device through a center conductor surrounded by a shield conductor. The device may include a reflector and a coupler adjacent to each other, the reflector electrically connected to the shield conductor and the coupler electrically connected to the center conductor at an unshielded connection point, wherein time-varying E-fields between the reflector and coupler are caused by the data received from the data source, and induce a transverse magnetic wave that propagates longitudinally along the surface of the transmission line.

Abstract: Methods and systems capable of launching signal-carrying transverse electromagnetic waves onto a transmission line in the higher voltage region of the transmission distribution network. Such methods and systems may include a surface wave launcher located in the higher voltage region, a network unit located in a lower voltage region, and an arrester separating the surface wave launcher and the network unit, the arrester preventing voltage from arcing over from the higher voltage region to the lower voltage region where the arrester provides the signal to the surface wave launcher.

Abstract: Disclosed are one or more preferred geometric configurations for a device communicably coupled to a power transmission line and capable of launching transverse electromagnetic waves onto the transmission line. The waves propagate data received from a data source and may include a reflector and a coupler adjacent to each other through a transverse magnetic wave that propagates longitudinally along the surface of the transmission line.

Abstract: In one embodiment, a switched amplifier is provided to amplify a data transmission. The switched amplifier may use a control signal that is received via a control signal channel in a transmission cable. Also, the switched amplifier may detect signal power to determine whether the data transmission is received at one of a first port and a second port. Data transmissions via the data transmission channel occur in a first direction and a second direction in a same frequency range in a time division multiplex (TDD) mode. Also, the control signal and data transmission are diverted from the transmission cable that transmits a type of signal different from the control signal and the data transmission. The switched amplifier is controlled based on the control signal or the signal power detected. The amplified signal is diverted in the first direction or the second direction via the data transmission channel back to the transmission cable.

Abstract: A method of prioritizing estimated fault locations within a network includes monitoring multiple different performance parameters for unacceptable threshold levels via communications with a set of terminal network elements and separately analyzing the different performance parameters to identify potential network fault locations on the network. Accordingly, a plurality of priority rankings of potential network fault locations can be generated, one for each performance parameter monitored, and then combined to generate an overall priority ranking of potential fault locations including at least a highest priority inspection point estimated as being a most likely source of a fault on the network.

Abstract: A passive optical network system having a node that is optically coupled to optical line terminals (OLTs), and that is optically coupled to optical network units (ONUs). The node includes at least one fiber link module (FLM), each FLM including an upstream multiplex conversion device (MCD), and a downstream MCD. The upstream MCD receives an upstream optical signal from the ONUs, converts the upstream optical signal to an upstream electrical signal, and transmits a regenerated upstream optical signal to the OLTs. The downstream MCD receives a downstream optical signal from the OLTs, converts the downstream optical signal to a downstream electrical signal, and transmits a regenerated downstream optical signal to the ONUs.

Abstract: A passive optical network system having a node that is optically coupled to optical line terminals (OLTs), and that is optically coupled to optical network units (ONUs). The node includes at least one fiber link module (FLM), each FLM including an upstream multiplex conversion device (MCD), and a downstream MCD. The upstream MCD receives an upstream optical signal from the ONUs, converts the upstream optical signal to an upstream electrical signal, and transmits a regenerated upstream optical signal to the OLTs. The downstream MCD receives a downstream optical signal from the OLTs, converts the downstream optical signal to a downstream electrical signal, and transmits a regenerated downstream optical signal to the ONUs.

Abstract: In one embodiment, a method receives a downstream signal and an upstream signal in a same frequency band. The downstream signal and the upstream signal are separated into a first path and a second path. The downstream signal using the first path and the upstream signal using the second path are amplified in an analog domain. The method isolates the downstream signal and the upstream signal from one another and sends the downstream signal downstream to a subscriber device and sends the upstream signal towards a full duplex node.

Abstract: A data network for a multiple dwelling unit (MDU) enables efficient use of a MoCA (Multimedia over Coax Alliance) system. The data network includes a distribution point unit (DPU) connected to an access network, a plurality of modems in the MDU, a plurality of coaxial cables extending through the MDU between the DPU and the plurality of modems, and at least one network expander present between the DPU and a subset of the plurality of modems. The network expander can be a repeater that retransmits received signals, wherein the DPU, the plurality of modems, and the network expander exchange data via the plurality of coaxial cables using MoCA protocols.

Abstract: An optical line terminal is operable in a passive optical network. The optical line terminal includes a chassis. A plurality of optical subsystems are disposed within the chassis. Each optical subsystem is operable to generate optical signals for delivery to a port. Each optical subsystem includes one or more optical switches. When a fault condition is detected at a first optical subsystem preventing the delivery of first optical signals generated by the first optical subsystem to the port of the first optical subsystem, the optical switches switch to deliver second downstream optical signals generated by a second optical subsystem to the port of the first optical subsystem.

Abstract: Improved systems and methods for delivering CATV content over a fiber optic network from a transmitter. The transmitter preferably monitors performance attributes of a transmitted signal and selectively configures the transmitter based on the monitored attributes.

Abstract: A data network for a multiple dwelling unit (MDU) enables efficient use of a MoCA (Multimedia over Coax Alliance) system. The data network includes a distribution point unit (DPU) connected to an access network, a plurality of modems in the MDU, a plurality of coaxial cables extending through the MDU between the DPU and the plurality of modems, and at least one network expander present between the DPU and a subset of the plurality of modems. The network expander can be a repeater that retransmits received signals, wherein the DPU, the plurality of modems, and the network expander exchange data via the plurality of coaxial cables using MoCA protocols.

Abstract: Improved systems and methods for delivering CATV content over a fiber optic network from a transmitter. The transmitter preferably includes a combining network that combines CATV signals received from a CATV head end.

Abstract: Improved systems and methods for delivering CATV content over a fiber optic network to a receiver.

Abstract: Improved systems and methods for delivering CATV content over a fiber optic network from a transmitter.

Abstract: Methods and systems for displaying information in a hierarchical structure are disclosed. An embodiment provides a method for displaying HFC network monitoring information and alarms in a hierarchical, topological fashion within a network monitoring system.

Abstract: An optical network terminal is provided for use in a passive optical network (PON). The optical network terminal includes a data port for receiving data packets from an external device and a processor for converting the data packets to data link frames. In addition, the optical network terminal includes a memory configured to store a time division multiplexing scheme identifying a time slot assigned to each of a plurality of network nodes in the PON for transmission of upstream optical signals. An optical transceiver is provided for converting the data link frames to upstream optical signals and transmitting the optical signals on an upstream TDMA (time division, multiple access) channel to an Optical Line Terminal (OLT). The optical transceiver includes a burst mode laser diode for generating the optical signals and a burst mode laser driver for biasing the laser diode with a bias signal and a modulation bias signal. The laser driver includes a dual closed loop feedback control circuit.

Abstract: Improved systems and methods for delivering CATV content over a fiber optic network from a transmitter.