Abstract: An architecture for surveillance of hybrid fiber coaxial (HFC) 5th generation (5G) Long Term Evolution (LTE) small cell devices using mobile edge computing techniques hosted by a HFC device is disclosed. A method can comprise receiving first data representing a quality of service value associated with a small cell device of a first group of 5G small cell devices; retrieving second data representing a historical quality of service value associated with a second group of 5G small cell devices; as a function of the first data and the second data, generating a change value for the small cell device; and based on the change value, facilitating an adjustment in an operation of the small cell device.

Abstract: A quantum computer includes a refrigeration system under vacuum including a containment vessel, a qubit chip contained within a refrigerated vacuum environment defined by the containment vessel. The quantum computer further includes a plurality of interior electromagnetic waveguides and a plurality of exterior electromagnetic waveguides. The quantum computer further includes a hermetic connector assembly operatively connecting the interior electromagnetic waveguides to the exterior electromagnetic waveguides while maintaining the refrigerated vacuum environment. The hermetic connector assembly includes an exterior multi-waveguide connector, an interior multi-waveguide connector, and a dielectric plate arranged between and hermetically sealed with the exterior multi-waveguide connector and the interior multi-waveguide connector. The dielectric plate permits electromagnetic energy when carried by the interior and exterior pluralities of electromagnetic waveguides to pass therethrough.

Abstract: In a wireless optical network with multiple coordinators or other access points, the coverage area of coordinators may overlap. Interference in the communication between coordinators and devices may occur in these overlapping coverage areas. Various embodiments propose an automatic allocation of reserved time slots to coordinators. These time slots support the coordinators to advertise their presence without interference and enable a device to detect the presence of a neighbour coordinator in a single MAC cycle. Cooperation of coordinators can be supervised by a global controller to determine non-interfering time schedules whereby the coordinators rely on interference reports from the devices in the overlapping coverage areas. Fast detection allows fast re-scheduling of time slots in the wireless optical network in order to prevent interference when a device that enters the overlapping coverage area of two coordinators.

Abstract: An optical transceiver can be calibrated using an internal receiver side eye scan generator, and calibration values (e.g., modulator values) can be stored in memory for recalibration of the optical transceiver. The eye scan generator can receive data from the transmitter portion via an integrated and reconfigurable loopback path. At a later time, different calibration values can be accessed in memory and used to recalibrate the optical transceiver or update the calibrated values using the receive-side eye scan generator operating in loopback mode.

Abstract: This communication device has a phase-modulation spatial light modulator; and a control unit which causes, during one frame time interval, the phase-modulation spatial light modulator to operate with first and second operation patterns. In a predetermined period within the one frame time interval, the first operation pattern includes a first light transmittable interval during which first signal light can be output, and a first pause interval during which the first signal light cannot be output whereas the second operation pattern includes a second light transmittable interval during which second signal light can be output, and a second pause interval during which the second signal light cannot be output. The first and second light transmittable intervals are each longer than a half of the predetermined period. The second pause interval is present within the first light transmittable interval, and the first pause interval is present within the second light transmittable interval.

Abstract: An intelligent subsystem coupled with a system-on-chip (comprising a microprocessor/graphic processor), a radio transceiver, a voice processing module/voice processing algorithm, a foldable/stretchable display, a near-field communication device, a biometric sensor and an intelligent learning algorithm is disclosed. The intelligent subsystem can respond to a user's interests and/or preferences. Furthermore, the intelligent subsystem is sensor-aware or context-aware.

Abstract: [Problem] In an optical transmission system, a position and a cause of a failure are identified while avoiding tightness of processing on a network controller side. [Solution] An optical transmission system 1 includes a plurality of nodes 4i to 4k interconnected by an optical transmission line, a plurality of node controllers 3i to 3k that detect degradation of signal quality at the nodes 4i to 4k, respectively, and determine a degradation mode correlated with the signal quality, and a network controller 2 that identifies a node or a component in which failure has occurred based on a node for which the node controller 3i to 3k has detected degradation of the signal quality, the degradation mode, a network topology formed of the nodes, and an optical path set between the nodes.

Abstract: An optical fiber testing device (300) being plugged into a port at which optical signals including communication and test signals within different wavelength bands being received, comprises an optical connector (304) including a plug body surrounding a ferrule holding an optical fiber (301) and a reflector component (326) carried with the optical connector (304). The reflector component (326) is optically coupled to the rear of the optical fiber and reflects the test signal. A method for testing an optical fiber, comprises removably securing a reusable ruggedized optical fiber testing device to a ruggedized port of an optical fiber terminal to optically couple to an optical fiber under test, transmitting a test signal over the optical fiber under test, and using the reflector component to return the test signal over the optical fiber under test when receiving the test signal.

Abstract: Disclosed herein are switch devices in terminal ends of a network and methods of using same. One embodiment relates to a terminal end of a network including a terminal end transceiver configured to communicate with one or more end user devices, and a switch device configured to automatically route communication at the terminal end transceiver between a primary communication path with a central office and an auxiliary communication path with the central office. Another embodiment relates to a method of switching between primary and auxiliary communication paths at a terminal end. Automatic switching is particularly applicable in a looped communication architecture with redundant communication paths for preventing interruption and increasing reliability for an improved user experience. Another embodiment relates to indexing with splices to reduce connections in a communication path and increase signal quality.

Abstract: An adjustable micro-optoelectronic system supporting bidirectional transmission, an online upgrade, and online configuration. The system includes: a substrate; and edge connectors, a clock-and-data recovery (CDR) chip for transmitting, a CDR chip for receiving, a microprocessor, and an internal optical system, which are provided on the substrate. The edge connectors serve as an interface of a high-speed electrical signal, and are configured to exchange information between the micro-optoelectronic system and an external environment. The internal optical system is configured to transmit and receive an optical signal. A link for the high-speed electrical signal is connected among the edge connectors, the CDR chip for transmitting, the internal optical system, and the CDR chip for receiving. A communication connection is provided between the microprocessor and each of the edge connectors, the CDR chip for transmitting, the CDR chip for receiving, and the internal optical system.

Abstract: It is an object to enable offline measurement with a high SN ratio of the phase of scattered light of an optical fiber to be measured in an optical receiving system for real-time measurement (direct measurement). The phase measurement method according to the present invention performs coherent detection of scattered light using a 90-degree optical hybrid, obtains an estimated quadrature component value by averaging a measured quadrature component value that is directly measured and a calculated quadrature component value obtained by Hilbert transforming a measured in-phase component value that is directly measured, obtains an estimated in-phase component value by averaging the measured in-phase component value and a calculated in-phase component value obtained by inverse Hilbert transforming the measured quadrature component value, and calculates the phase of scattered light based on the estimated quadrature component value and the estimated in-phase component value.

Abstract: An ONU is provided. The ONU comprises a receiver configured to receive a first PON frame from an OLT, the first PON frame comprising a first PSBd field, the first PSBd field comprising a first PSync field, the first PSync field comprising first bits, and a first quantity of the first bits being greater than 64 bits; and a processor coupled to the receiver and configured to perform synchronization of the first PON frame by matching the first bits to a pre-stored sequence.

Abstract: A data transmission method includes receiving, by an optical line terminal (OLT) from an optical network unit (ONU), uplink burst data that includes a synchronization data block and a payload, where the synchronization data block includes first synchronization data, wherein the first synchronization data includes a first preamble and an ONU identifier, and a first bandwidth occupied by the first frequency distribution of the first synchronization data is narrower than a second bandwidth occupied by the second frequency distribution of the payload, and obtaining, by the OLT from the first synchronization data, the ONU identifier.

Abstract: An image collection chip, an object imaging recognition device and an object imaging recognition method are provided. In each set of the pixel confirmation modules of the chip, each modulation unit and each sensing unit are correspondingly provided up and down on the optical modulation layer and the image sensing layer respectively; each modulation unit is provided with at least one modulation subunit, and each of the modulation subunits is provided with several modulation holes penetrating into the optical modulation layer; and the respective modulation holes in a same modulation subunit are arranged into a two-dimensional graphic structure having a specific pattern.

Abstract: An optical detection unit detects a return light and outputs a detection signal. An optical multiplexer/demultiplexer outputs the monitoring light to the optical transmission line, and outputs the return light to the optical detection unit. A processing unit detects a first timing at which the detection signal becomes less than a first threshold value, detects a second timing at which the detection signal becomes less than a second threshold value, and calculates a first change rate of the detection signal in a period between the first and second timings. The processing unit changes the first and second threshold values to calculate the first change rate for a plurality of periods, and, when a second change rate between the first change rates in two adjacent periods is greater than a threshold value, either of the first and second timings in one period is detected as the breakage position.

Abstract: A method for establishing a data model and an apparatus, where a network element may create an optical signal group that includes optical signals with different wavelengths. After selecting a first optical signal group and obtaining first data of the first optical signal group, the network element may reflect, based on a first model established based on the first data of the first optical signal group, a noise coefficient and a gain that are obtained after an optical signal in the optical signal group of different wavelength combinations passes through the network element.

Abstract: A multi-channel transmitter includes a light source, a pulse generator and a mode splitter. The light source generates a continuous source light wave with multiple modes that are different from each other in terms of wavelength and waveform. The pulse generator generates, based on the continuous source light wave, an intermediate light pulse with multiple modes that are different from each other in terms of wavelength and waveform. The mode splitter has a plurality of output terminals, and generates, based on the intermediate light pulse and respectively at the output terminals thereof, a plurality of output light pulses that respectively correspond to the modes of the intermediate light pulse.

Abstract: An object is to automatically detect a failure of an optical transmission line. A light source outputs a monitoring light. An optical detection unit detects a return light from an optical transmission line and outputs a detection signal indicating an intensity of the return light. An optical multiplexer/demultiplexer outputs the monitoring light input from the light source to the optical transmission line, and outputs the return light input from the optical transmission line to the optical detection unit. A comparator compares the detection signal with a threshold voltage and outputs a comparison signal indicating the comparison result. A processing unit detects a first timing at which the comparison signal changes, and detects a failure of the optical transmission line when the first timing is earlier than a reference timing.

Abstract: If a configuration is employed in which modulation schemes used for an optical communication system can be switched depending on transmission conditions, the power consumption increases and the control becomes complex; therefore, an optical transmitter according to an exemplary aspect of the present invention includes an encoding means for encoding digital signals to be transmitted under a predetermined transmission condition over an optical carrier wave by using one of a plurality of encoding methods; an encoding control means for selecting a predetermined encoding method corresponding to the predetermined transmission condition from among the plurality of encoding methods and causing the encoding means to operate in accordance with the predetermined encoding method; a mapping means for mapping output bit signals output from the encoding means to modulation symbols; and an optical modulation means for modulating the optical carrier wave based on symbol signals output from the mapping means.

Abstract: A method for channel management in an optical network unit includes receiving a disable channel action message sent by an optical line terminal, wherein the disable channel action message is used to instruct disabling a first channel of the optical network unit; transferring the state machine of the optical network unit on the first channel from the association substate of the operation state to the pending substate according to the disable channel action message; and turning off the transmitter and/or the receiver on the first channel after a specified time is reached, transferring the state machine from the pending substate of the operation state to the disabling channel status, and starting a timer.