40results about "Optical multiplex" patented technology

A route calculation method, device, and system. The route calculation method includes: receiving, by a first device, a service request message, where the service request message is used to request the first device to determine a transmission path of a borne service requested by the service request message to be established; and determining, by the first device, a transmission path of the service based on the service request message and first bearing capability information, where the first bearing capability information is used to indicate an actual bearing capability of each link on the transmission path. According to the foregoing solution, the system can calculate a route and configure the service based on an actual service bearing capability of each link of a network.

Provided is an optical communication device including: one or more light distribution units configured to include a first surface having a plurality of first ports and a second surface different from the first surface having a plurality of second ports, have one or more subscriber transmission device ports to which n (n is an integer equal to or greater than 1) subscriber transmission devices are connected and one or more downlink signal ports allocated to the plurality of first ports, have one or more subscriber reception device ports to which n subscriber reception devices are connected and one or more uplink signal ports allocated to the plurality of second ports, and output optical signals input from the first ports from the second ports; and a light distribution control unit configured to control a connection relationship between the plurality of first ports and the plurality of second ports of the one or more light distribution units.

Photonic processors are described herein that are configured to perform matrix-matrix (e.g., matrix-vector) multiplication by directly encoding a first value in the output of the light source. Some embodiments relate to a photonic device configured to perform a mathematical operation, the photonic device comprising a modulatable light emitting diode (LED) and a modulatable detector. The modulatable LED being configured to emit light. The modulatable detector being optically coupled to an output of the modulatable LED. The photonic device further comprising, a controller being configured to encode a first value in the light emitted by the modulatable LED and to encode a second value in a characteristic of the modulatable detector; and a receiver configured to determine a result of the mathematical operation based on an electrical signal produced by the modulatable detector.

To provide an optical transmitting apparatus that ensures bandwidth characteristics according to the baud rate of an optical signal.SOLUTION: An optical transmitting apparatus includes a conversion device that converts an electrical data signal into an optical signal, a control unit that changes an adjustment value of peaking based on the baud rate of the optical signal, and a driver that changes bandwidth characteristics of the conversion device based on the adjustment value changed by the control unit.SELECTED DRAWING: Figure 8

A method of operating a coherent transmitter in a time division multiple access (TDMA) system includes operating in an OFF state while the coherent transmitter is not assigned to transmit data in the TDMA system, wherein operating in the OFF state comprises generating a laser output having a dummy frequency different from an active frequency used to transmit data in the TDMA system; and operating in an ON state while the coherent transmitter is assigned to transmit data in the TDMA system, wherein operating in the ON state comprises generating an active laser output having the active frequency and modulating the active laser output using a modulator. Advantageously, the coherent transmitter can be used at an optical network unit (ONU) in a coherent passive optical network (CPON).

A system and method for distributing quantum entanglement using optically protected fiber optical paths is described. In some embodiments, multiple optical paths are used to connect a source site to a receiver site. Quantum entangled particles are transmitted from the source site to the receiver site using a first one of the multiple optical paths and related service channel information is transmitted from the source site to the receiver site using a second one of the multiple optical paths. In response to a failure of either the first or second optical path, an entanglement distribution controller automatically updates the routing such that the service channel information and the quantum entangled particles are routed concurrently on a remaining one of the first or second optical path.

Described herein are balanced, bidirectional, optical communication networks. These networks may be used in large-scale settings, including in networks including more than one hundred nodes or more than one thousands nodes. A network may include a plurality of nodes. Each node comprises a plurality of optical transceivers of a first type and a plurality of optical transceivers of a second type. The types differ from each other in a characteristic of light transmitted by the respective optical transceiver. The optical transceivers of the first type are in equal numbers across the plurality of nodes and the optical transceivers of the second type are also in equal numbers across the plurality of nodes. A plurality of optical channels connect the nodes with one another by coupling optical transceivers of the first type with optical transceivers of the second type. The optical channel support bidirectional communication between the connected nodes.

A signal processing circuit includes a MIMO demodulation unit that includes a first MIMO filter and performs MIMO demodulation processing on a plurality of signals, a signal extraction unit that extracts a signal of a predetermined time slot from an output signal of the MIMO demodulation unit, a removal component generation unit that includes a second MIMO filter and generates a signal component to be removed including an interference component generated between modes, an interference cancellation unit that generates a signal in which the signal component to be removed has been removed from the signal extracted by the signal extraction unit, and a coefficient control unit that adaptively controls coefficients of the first MIMO filter and the second MIMO filter using a magnitude of a difference between the signal in which the signal component to be removed has been removed and a reference signal as a loss function.

Steering light includes providing each light wave tuned over each different wavelength within each different time slot from multiple light source ports, radiating at least a portion of light from at least one optical phased array including multiple optical phase shifters and multiple optical lattice antennas, distributing at least a portion of the light using at least one optical distribution network (ODN), and coupling at least a portion of the light using at least one optical coupler (OC), wherein the at least one ODN includes one or more ODN input ports and two or more ODN output ports, each coupled to each different optical phase shifter among the multiple optical phase shifters, and the at least one OC includes at least one OC input port coupled to one light source port among the multiple light source ports and at least one OC output port coupled to one ODN input port among the one or more ODN input ports.

This is a distributed network element and submarine network element management system for optical communication systems. [Solution] The system includes a plurality of cable landing stations configured to be communicatively coupled using one or more optical communication cables in a peer-to-peer network for routing one or more optical signals using one or more network elements. Each cable landing station includes a management device configured to determine one or more optical communication paths for routing optical signals, and a command / response optical device communicatively coupled to the management device for routing optical signals based on the optical communication paths. Upon receiving a request to route at least one optical signal, the management device of each cable landing station is configured to determine at least one optical communication path for routing the optical signal based on a topology map of the peer-to-peer network of the plurality of cable landing stations.

A gain equalization apparatus according to an example embodiment includes a first path including a gain equalizer configured to correct a tilt of an input optical signal, a second path including a through-fiber configured to transmit the input optical signal therethrough as it is, an optical switch capable of switching between the first path including the gain equalizer and the second path including the through-fiber, at least one memory configured to store instructions, and at least one processor configured to execute the instructions to control the switching of the optical switch. By this configuration, a gain equalization apparatus and a method for equalizing a gain capable of reducing power consumption and suppressing an increase in optical loss while improving reliability are provided.

This wireless communication method is for a wireless communication system comprising an aggregation station and an extension station that performs beamforming in accordance with aggregation station control, wherein: the aggregation station performs extension station beamforming control by transmitting, to the extension station via an optical transmission path, an optical signal including a beam control signal for at least controlling beamforming at the extension station and a transmission signal which is data to be transmitted; and the extension station transmits the transmission signal by setting a phase shifter, or configuring a setting by means of a switch change, to a phase difference for forming a beam in a specific direction on the basis of the beam control signal included in the optical signal.　

An optical communication system and method. The system includes a plurality of cable landing stations configured to be communicatively coupled using one or more optical communication cables in a peer-to-peer network for routing of one or more optical signals using one or more network elements. Each cable landing station includes a management device configured to determine one or more optical communication paths for routing optical signals, and a command / response optical device communicatively coupled to the management device for routing optical signals in accordance with the optical communication path. In response to receiving a request for routing at least one optical signal, the management device of each cable landing station is configured to determine at least one optical communication path for routing the optical signal in accordance with a topology map of the peer-to-peer network of the plurality of cable landing stations.

The application discloses a kind of optical communication receiving and data recovery methods for space division multiple access multi-to-multi communication, it is related to optical communication receiving technical field.The application discloses a kind of optical communication receiving and data recovery methods for space division multiple access multi-to-multi communication, it is related to optical communication receiving technical field.The application discloses a kind of optical communication receiving and data recovery methods for space division multiple access multi-to-multi communication, it is related to optical communication receiving technical field.The application discloses a kind of optical communication receiving and data recovery methods for space division multiple access multi-to-multi communication, it is related to optical communication receiving technical field.The application discloses a kind of optical communication receiving and data recovery methods for space division multiple access multi-to-multi communication, it is related to optical communication receiving technical field.The application discloses a kind of optical communication receiving and data recovery methods for space division multiple access multi-to-multi communication, it is related to optical communication receiving technical field.The application discloses a kind of optical communication receiving and data recovery methods for space division multiple access multi-to-multi communication, it is related to optical communication receiving technical field.The application discloses a kind of optical communication receiving and data recovery methods for space division multiple access multi-to-multi communication, it is related to optical communication receiving technical field.The application discloses a kind of optical communication receiving and data recovery methods for space division multiple access multi-to-multi communication, it is related to optical communication receiving technical field.The application discloses a kind of optical communication receiving and data recovery methods for space division multiple access multi-to-multi communication, it is related to optical communication receiving technical field.The application discloses a kind of optical

The application discloses a kind of space division multiple access parallel light communication methods, device and equipment based on Micro-LED array, it is related to visible light communication and intelligent transportation technical field.The application discloses a kind of space division multiple access parallel light communication methods, device and equipment based on Micro-LED array, it is related to visible light communication and intelligent transportation technical field.The application discloses a kind of space division multiple access parallel light communication methods, device and equipment based on Micro-LED array, it is related to visible light communication and intelligent transportation technical field.The application discloses a kind of space division multiple access parallel light communication methods, device and equipment based on Micro-LED array, it is related to visible light communication and intelligent transportation technical field.The application discloses a kind of space division multiple access parallel light communication methods, device and equipment based on Micro-LED array, it is related to visible light communication and intelligent transportation technical field.The application discloses a kind of space division multiple access parallel light communication methods, device and equipment based on Micro-LED array, it is related to visible light communication and intelligent transportation technical field.The application discloses a kind of space division multiple access parallel light communication methods, device and equipment based on Micro-LED array, it is related to visible light communication and intelligent transportation technical field.The application discloses a kind of space division multiple access parallel light communication methods, device and equipment based on Micro-LED array, it is related to visible light communication and intelligent transportation technical field.The application discloses a kind of space division multiple access parallel

Embodiments of the present disclosure may comprise a coherent optical receiver, where the coherent optical receiver comprises a PCSEL that generates a first and a second light beam. In accordance with various embodiments, the physical emission direction of the first light beam may be at an angle of 180 degrees, or 180 degrees plus / minus 10 degrees in some instances, to the physical emission direction of the second light beam. Embodiments may also comprise a first hybrid receiver that receives a first portion of an input light signal to the coherent optical receiver and the first light beam as a local oscillator signal, generating one or more first optical hybrid receiver output signals. Embodiments may also comprise a second hybrid receiver that receives a second portion of the input light signal to the coherent optical receiver and the second light beam as a local oscillator signal, generating one or more second optical hybrid receiver output signals.

TITLE Radio Frequency Signal Multiplexing Device, Radio Frequency Signal Demultiplexing Device and Associated Digital Processing System The present invention relates to a radio frequency signal multiplexing device (22) comprising: - a plurality of RF inputs (44); - a plurality of frequency converters (50), each frequency converter (50) being associated with one or more RF inputs (44) and configured to receive RF signals from this or these RF inputs (44) and to convert them into optical signals; - a plurality of optical multiplexers (52), each optical multiplexer (52) being configured to multiplex at least two optical signals of different wavelengths; - a plurality of photoreceptors (54), each photoreceptor (54) being configured to convert a multiplexed optical signal into a multiplexed RF signal; - a plurality of RF outputs (46), each RF output (46) being configured to provide a multiplexed RF signal.Figure for the abbreviation: Figure 2.

The application relates to the technical field of optical fiber communication, and provides a single-span broadband multi-wave amplification method and system for a multi-island scene. C-waveband signals and L-waveband signals in C+L ultra-wideband signals transmitted by a single-mode optical fiber are divided into two paths to obtain single-waveband signals; each single-waveband signal is coupled with pump light and transmitted to a passive double-core optical fiber through a double-core fan-in device to obtain a to-be-processed signal; each to-be-processed signal is transmitted through the passive double-core optical fiber and is amplified at an asymmetric gain optical fiber to obtain a processed signal; each processed signal is transmitted through the passive double-core optical fiber and is combined through a double-core fan-out device to enter a single-mode optical fiber to continue transmission in a metropolitan area network, so that the problems of high cost and low gain in the prior art, the nonlinear problem of C+L waveband signals in the same fiber core and the loss and complexity problems caused by frequent use of fan-in and fan-out devices in the middle section of a transmission link are solved.

A power splitter may include a single-core optical fiber, a beam-splitting optical fiber, and a multicore optical fiber. The beam-splitting optical fiber may include a polygonal core configured to output a multimode interference beam pattern including a plurality of beam spots, an input end coupled to the single-core optical fiber, and an output end coupled to the multicore optical fiber. In embodiments, a difference between a mode field diameter of the cores of the multicore optical fiber and a mode field diameter of the core of the single-core optical fiber may be less than or equal to 50%. In embodiments, when the power splitter is in operation, a difference between a distance between neighboring beam spots of the multimode interference beam pattern output by the beam-splitting optical fiber and a core pitch of the cores of the multicore optical fiber may be less than or equal to 10%.

Multi-directional optical devices are disclosed. The optical devices can employ a multi-input / multi-output optical coupling structure to determine a propagation direction of received light (in a receiver configuration), and / or to control a propagation direction of emitted light (in an emitter configuration). The propagation direction can be determined without requiring moving components. According to some embodiments, designs of solid-state photonic integrated circuits (PICs) are disclosed herein that utilize NxM star couplers to perform a Fourier transform on light passing between N ports and M ports, resulting in light reaching one or more of the N ports being distributed across the M ports with a linear phase profile. A slope of the linear phase profile depends on which of the N ports the light is received from. The light exits from waveguides coupled to the M ports in one or more propagation directions that depend on the linear phase profile.

The present invention relates to a free-space multiplexing system (1) for a polarized beam (10) for transmitting a multiplexed beam (12) in free space, comprising a plurality of optical multiplexing devices (11) on at least two stages (11a), wherein for at least one interleaving stage (11b), the following is performed: at least one multiplexing device (11) comprises an interleaving device (110) including an angle-invariant optical coupling module (113) configured to couple incident beams (10a, 10b) of different polarizations to form an outgoing beam (10c) of mixed polarization, and an optical conversion module (111) configured to change the polarization of the outgoing beam 10c for a multiplexed beam (12a) of the same polarization.

An object of the present invention is to provide a communication system, a control device, a control method, and a program that can inexpensively acquire highly reliable sensor data. A communication system according to the present invention includes a control device, a plurality of lighting devices, and an IoT device. The lighting devices output modulated light beams that are modulated, the IoT device receives each of the modulated light beams, uses information obtained from each of the modulated light beams as metadata, and transmits, to the control device, the metadata and collected sensing data in association with each other, and the control device controls generation and output of the modulated light beams to the lighting devices, estimates a position of the IoT device from the metadata, and stores the position of the IoT device and the sensing data in association with each other.

A remote control device configured to control an electronic device including: a plurality of input keys; a signal transmitter; and a processor configured to: identify a time interval between a first radio signal and a second radio signal based on a length of the first radio signal, and based on one of the plurality of input keys being consecutively selected, control the signal transmitter to repeatedly output the second radio signal corresponding to the selected input key according to the identified time interval, where the first radio signal is configured to control an external electronic device communicating with the electronic device based on the second radio signal received from the remote control device.

An integrated optical phased array system includes at least one spiral-shaped waveguide antenna on a substrate, with perturbations positioned along the spiral path of each antenna to enable light scattering, and phase shifters coupled to the spiral-shaped waveguide antenna to control beam profiles for enhanced functionality. Each spiral-shaped waveguide antenna is configured to emit wavelength-tunable focusing beams with variable focal distances for applications in optical tweezers, chip-based three-dimensional printing, quantum systems, LiDAR, and optical communication, whereby tunable focus is achieved by varying the input wavelength.