Abstract: Embodiments of the present application provide a method based on an optical fiber communication network for controlling a robot, a storage medium and an electronic device. The method includes: converting an acquired electrical control signal of the robot to an optical control signal; broadcasting the optical control signal over a downlink of the optical fiber communication network; filtering the optical control signal based on a port identifier to obtain an optical control signal corresponding to the port identifier; converting the optical control signal corresponding to the port identifier to an electrical control signal; and sending the electrical control signal to an actuator of the robot. According to the embodiments of the present application, the number of wirings inside the robot is reduced, the wiring complexity is reduced, and the bandwidth for communication and anti-electromagnetic interference capabilities in the control system are improved.

Abstract: According to one aspect disclosed herein, there is provided an optical wireless charging and data transmission system (100), the system comprising: a plurality of transmitter nodes (102,2020) operable to perform a first function of emitting a beam of light (104) to charge a receiver device (106) and a second function of emitting a beam of light (206) to transmit data to the receiver device (106); and a controller (108) configured, for each of the transmitter nodes, to perform a selection by selecting between performing the first function and the second function; wherein the controller is configured to perform the selection for each of the plurality of transmitter nodes based on one or more properties of the system comprising the spatial configuration of the system (100) and one or more properties of the receiver device (106) comprising the location of the receiver device relative to the system, by selecting a first transmitter node (202) of the plurality of transmitter nodes (102, 202) for transmitting data t

Abstract: An optical signal monitor, including: a storage that holds a threshold value set for each of determination areas having a bandwidth set in accordance with an average grid of dummy light; a measurement section that sequentially measures an optical intensity of an inputted wavelength-multiplexed optical signal with respect to each of measurement areas obtained by dividing the determination area into areas with a bandwidth sufficiently smaller than a grid width of a monitoring-target optical signal composing the wavelength-multiplexed optical signal, and output measured values; and a section that determines that dummy light corresponding to the determination area needs introducing if each of measured values in the determination area is smaller than a threshold value, and, determines that dummy light corresponding to the determination area does not need introducing if at least one of the measured values in the determination area is equal to or larger than the threshold value.

Abstract: A telecom system is disclosed with a laser controlled by an acousto-optic deflector including an optical element having a surface with one or more steps formed thereon; a conductive layer formed on the surface with the steps; one or more crystals secured to each step; and electrodes positioned on each surface of each crystal.

Abstract: Optical transmitters and receivers for improving synchronization of data transmitted over an optical network are described. The receiver can perform non-linear filtering as part of framer index estimation operations to improve the synchronization. The receiver can determine estimated positions of framer indices in data frames received from the transmitter. Next, using a non-linear filter, the receiver can remove estimated positions that are likely erroneous or are greater than a threshold away from the median or mode estimated framer index position. By removing the likely erroneous estimated positions, the receiver can then determine the estimated position of a framer index position for multiple frames with greater confidence.

Abstract: Systems and methods for optical communication are provided. For instance, a method for optical communication can include receiving, by a first coupling module, a power-on signal from a first electronic device coupled to the first coupling module. The method can also include relaying, by the first coupling module, a first optical signal to a second coupling module coupled to a second electronic device. The method can also include relaying, by the second coupling module, in response to receipt of the first optical signal, a second optical signal to the first coupling module. The method can also include activating, by the first coupling module, in response to receipt of the second optical signal, a data transfer circuit for relaying data via an optical communication interface between the first coupling module and the second coupling module.

Abstract: An optical network receiver (ONU) circuit associated with a passive optical network (PON) is disclosed. The ONU circuit comprises one or more processors is configured to operate in a hunt state, wherein the one or more processors is configured to detect frame boundaries associated with an incoming data signal based on a detecting a predefined synchronization (psync) pattern associated with the incoming data signal and transition to a pre-sync state, when the predefined psync pattern is detected correctly. The one or more processors is further configured to operate in the pre-sync state, wherein the one or more processors is configured to perform forward error correction (FEC) decoding for the incoming data signal, in order to determine signal statistics associated with the incoming data signal.

Abstract: An optical wireless communication (OWC) device comprises: a receiver comprising: a dual-wavelength filter configured to filter light arriving at the receiver, wherein the dual-wavelength filter is configured to pass light of a first frequency and light of a second, different frequency, and wherein the dual-wavelength filter is configured to substantially block light of a third frequency between the first frequency and second frequency; and a photodetector configured to receive the filtered light and to sense modulated light of the first frequency and/or modulated light of the second frequency to produce at least one receiver signal; demodulation circuitry and a processing resource for performing a demodulation and processing with respect to the at least one receiver signal to obtain data encoded in the modulated light of the first frequency and/or data encoded in the modulated light of the second frequency; a transmitter comprising a light source configured to output modulated light of the third frequency; a

Abstract: Certain network switch device can use pluggable transceivers to send and receive data. Transceiver may be capable of operating in multiple different operating modes defined by parameters such as speed. Application data indicating one or more operational modes supported by the transceiver may be read from a memory of a transceiver. An interface may be provided by a network switch device that indicates the one or more operational modes and identifiers of the one or more operational modes. The transceiver may be configured by the network switch device to operate in a selected operational mode based on a selection of an identifier corresponding to the selected operational modes. The selected operational mode, which may require multiple parameters to be configured on the transceiver, may be set using a single command based on the identifier.

Abstract: It is difficult to improve the usage efficiency of an optical communication network due to the passband narrowing effect in a wavelength selection process in an optical communication network using a wavelength division multiplexing system; therefore, an optical network management apparatus according to an exemplary aspect of the present invention includes wavelength selection information generating means for generating wavelength selection information on a wavelength selection process through which an optical path accommodating an information signal goes, with respect to each optical path; and wavelength selection information notifying means for notifying an optical node device through which the optical path goes of the wavelength selection information.

Abstract: An optical module includes: an optical semiconductor device in which a semiconductor laser and an optical modulator are integrated; a bypass capacitor including a lower electrode and an upper electrode, the bypass capacitor being connected in parallel to the semiconductor laser; a dielectric substrate having an upper surface and a lower surface, the optical semiconductor device and the bypass capacitor being surface-mounted on the upper surface, the dielectric substrate having a conductor pattern on the upper surface, the cathode electrode and the lower electrode being bonded to the conductor pattern; and a conductor block supporting the lower surface of the dielectric substrate. The lower electrode of the bypass capacitor having an overlap area overlapping with the upper surface of the dielectric substrate, the lower electrode of the bypass capacitor having an overhang area overhanging from the upper surface of the dielectric substrate.

Abstract: A universal sub slot module includes a Printed Circuit Board (PCB) including circuitry for power, a data plane, and a control plane; a faceplate connected to one end of the PCB and connectors connected to another end of the PCB, wherein the connectors are configured to connect to corresponding connectors in a host module; and a form factor containing the PCB and configured to interface a sub slot in the host module configured to operate in a chassis-based or rack mounted unit network element. The host module can include a plurality of sub slots, each being a port having one of the universal sub slot module and a filler module. The data plane can be configured to implement one of Optical Transport Network (OTN), Beyond 100G, Flexible Optical (FlexO), Ethernet, and Flexible Ethernet (FlexE).

Abstract: To relax the accuracy with respect to a positional deviation, and thus to reduce costs. An optical waveguide is included that performs propagation only in a reference mode at a first wavelength. Communication is performed using light that has a second wavelength and includes a component of at least a first order mode in addition to a component of the reference mode. Here, the second wavelength is a wavelength that enables the optical waveguide to perform propagation in at least the first order mode in addition to the reference mode. For example, a light path adjuster that adjusts a light path such that input light is guided to a core of the optical waveguide, is further included.

Abstract: Systems and methods for delivering multiple passive optical network services are disclosed. One system includes a first optical transmission service comprising a common wavelength pair routed from a source to each of a plurality of subscribers and a second optical transmission service comprising a plurality of unique wavelength pairs, each of the unique wavelength pairs assigned to a subscriber among the plurality of subscribers. The system includes a splitter optically connected to first fiber carrying the first optical transmission service, the splitter including a plurality of outputs each delivering the first optical transmission service, and a wavelength division multiplexer connected to a second fiber, the wavelength division multiplexer separating each of the unique wavelength pairs of the second optical transmission service onto separate optical fibers.

Abstract: Examples relate to apparatuses, methods, and computer programs for a remote unit and a central unit of an optical line terminal. In particular, a central unit apparatus for an optical line terminal comprises one or more interfaces configured to communicate with one or more remote unit apparatuses via one or more communication links. The apparatus further comprises a processor configured to receive information on one or more upstream reports from the remote unit apparatuses, the upstream reports relate to one or more optical networks used by the remote unit apparatuses to communicate with a plurality of optical network users. The processor further determines information on bandwidth assignments for the plurality of optical network users based on the information on the one or more upstream reports and transmits the information on bandwidth assignments to the one or more remote unit apparatuses.

Abstract: An RF transmitter comprising an optical source configured to generate a pair of optical lines separated by an RF carrier frequency. The transmitter may comprise a graphene photodetector having at least two electrical contacts; a transmit antenna coupled to a first of the electrical contacts; and an electrical data signal input connected to a second of the electrical contacts. The graphene photodetector is illuminated by the optical source; it may comprise a graphene photo-thermal effect (PTE) photodetector or a bolometric photodetector. A corresponding receiver is also described.

Abstract: A co-packaged optical-electrical chip can include an application-specific integrated circuit (ASIC) and a plurality of optical modules, such as optical transceivers. The ASIC and each of the optical modules can exchange electrical signaling via integrated electrical paths. The ASIC can include Ethernet switch, error correction, bit-to-symbol mapping/demapping, and digital signal processing circuits to pre-compensate and post-compensate channel impairments (e.g., inter-channel/intra-channel impairments) in electrical and optical domains. The co-packaged inter-chip interface can be scaled to handle different data rates using spectral efficient signaling formats (e.g., QAM-64, PAM-8) without adding additional data lines to a given design and without significantly increasing the power consumption of the design.

Abstract: The disclosure provides methods, apparatus and computer-readable media for synchronization over an optical network. A method comprises: receiving, from a client, a request to initiate a synchronization service for a client node coupled to the optical communication network; and, in response to the request, establishing a synchronization service to the client node via a virtual synchronization network utilizing the optical communication network. The synchronization service utilizes a bidirectional optical channel established via the optical communication network for the transmission of synchronization data for the client.

Abstract: A satellite system may have a constellation of communications satellites that provides services to users with electronic devices such as portable electronic devices and home/office equipment. The satellites may support communications between the electronic devices of the users and gateways. Each gateway may have satellite transceiver circuitry that transmits and receives satellite signals. Each gateway may also have an optical add-drop multiplexer coupled to a fiber ring and radio-frequency-over-fiber circuitry coupled between the satellite transceiver circuitry and the optical add-drop multiplexer. A metropolitan point-of-presence may be in communication with the fiber ring and may have modems for centrally processing communications (received and transmitted in an intermediate frequency) in the satellite system.

Abstract: A box-type packaged optical transceiver with multiplexing capabilities includes a box-shaped housing, a cover plate, an optical receiving module, an optical emitting module, a prism module, and an optical fiber connector. The housing has a through hole and is hermetically sealed by the cover plate. The optical receiving module, the optical emitting module and the prism module are disposed in the internal space. A first incoming optical signal is transmitted to the optical receiving module through the optical fiber connector, the through hole, and the prism module, and the optical emitting module emits an outgoing second optical signal through the prism module, the through hole, and the optical fiber connector.