477results about "Optical multiplex" patented technology

The present invention relates to the field of pipeline leakage monitoring. Disclosed is an oil and gas pipeline leakage wave identification and monitoring system. In the present invention, an mCNN is combined with LFLBs for performing feature extraction on an acoustic wave signal collected by a DFB, and the collected data improves information completeness; a three-way parallel one-dimensional CNN used in the present invention exhibits good temporal resolution and sensitivity to high-frequency feature transformations in signals; and the present invention integrates advantages of different scales, enabling the algorithm to learn more features, and incorporating the LFLBs to further extract high-level local features. An mCNN-LFLBs network model of the present invention exhibits significant innovation and advancement on the technical level, and also demonstrates extremely high value in actual application. The network model not only provides a novel and efficient technical means for critical fields such as natural gas pipeline inspection, but also introduces new ideas and methods to research fields related to deep learning and signal processing.

Aspects of the disclosure relate to wireless communication including mode division multiplexing of data and reference signals using different orbital angular momentum (OAM) modes. An OAM transmitter may transmit a reference signal (RS) configuration information to an OAM receiver that indicates radio resources for a plurality of OAM modes. The OAM transmitter may further transmit data on a first OAM mode of the plurality of OAM modes using first radio resources of the radio resources indicated by the RS configuration information. The OAM transmitter may further transmit a reference signal on a second OAM mode of the plurality of OAM modes using the first radio resources of the radio resources indicated by the RS configuration information. The OAM receiver may receive the data on the first OAM mode and the reference signal on the second OAM mode. Other aspects, embodiments, and features are also claimed and described.

An optical switch comprising: a set of first input ports. each first input port configured to transport an optical signal having at least one component frequency channel: a set of first output ports. each first output port configured to transport an optical signal having at least one component frequency channel: a first programmable deflection plane configured to deflect beams incident on it to form a first deflected array of beams: a second programmable deflection plane configured to deflect beams incident on it to form a second deflected array of beams: a first demultiplexer configured to separate light from the set of first input ports into its component frequency channels to form the beams incident on the first programmable deflection plane: a first multiplexer configured to combine the second deflected array of beams from the second programmable deflection plane into combined signals incident on the set of first output ports: and a beam steering optical element group configured to transfer the first deflected array of beams from the first programmable deflection plane to the beams incident on the second programmable deflection plane. The incidence normal of the first programmable

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.

Methods and systems for operation of an endpoint device of a deployment are disclosed. The endpoint device may obtain a network data united directed to a destination. The endpoint device may select a channel over which to forward the network data united based on a forwarding policy and a state of an optical link between the endpoint device and an optical service point. The forwarding policy may be keyed, at least in part, on the state of the optical link. The endpoint device may forward the network data unit over the selected channel to direct the network data unit towards the destination in order to facilitate provisioning of desired computer-implemented services.

The present invention discloses a wireless cross-domain acoustic communication system and method based on acoustic holography. The acoustic holographic device used for cross-domain acoustic communication consists of a single-layer acoustic holographic phase plate, an array transducer, and a camera vision module, wherein each array element of the array transducer has two states: on / off. After receiving the communication coding signal transmitted in the water, the transducer array elements at the corresponding positions can be sequentially selected and the dynamic regulation of the incident sound field can be realized. Then, the sound is transmitted to the water-air interface through the single-layer holographic phase plate and phase-modulated. Under the action of the acoustic radiation force, the interface will deform. The camera vision module is used to capture and parse and decode the deformation of the water surface, completing the wireless reception of information across the water-air interface. The present invention can directly transmit underwater information to the air. The equipment is simple and the relative position requirements of the transmitting and receiving devices are not strict. It is applicable to liquid environments of any temperature, salinity, and density.

An optical communication apparatus includes an optical switch, a wavelength management control unit, and an optical switch control unit. The optical switch is connected to a plurality of transmission lines and outputs an optical signal input from one of the transmission lines to another of the transmission lines. The wavelength management control unit assigns a wavelength to a subscriber terminal according to a communication destination. The optical switch control unit controls the optical switch such that it outputs an optical signal transmitted from the subscriber terminal, to which a wavelength has been assigned, to a transmission line corresponding to its forwarding destination on a path to the communication destination.

An optical transmission system includes a transceiver configured to output an optical signal to a first optical fiber core, wherein the first optical fiber core is configured to reflect a portion of the optical signal back toward the transceiver. The optical transmission system further includes a second optical fiber core proximate the first optical fiber core, wherein the second optical fiber core is configured to receive crosstalk of the reflected portion of the optical signal from the first optical fiber core. The optical transmission system further includes a detector configured to receive the crosstalk of the reflected portion of the optical signal and generate detection data based on the crosstalk of the reflected portion of the optical signal. The optical transmission system further includes a controller configured to receive information related to the detection data, and determine whether the optical transmission system is functioning properly based on the detection data.

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.

An integrated photonic device independently directs each channel of a multiplexed input optical signal received from a corresponding one of N input port to one of N output ports, each multiplexed input optical signal including N channels. The device includes: N input waveguides; secondary waveguides; wavelength-selective filters, each: i) including a ring resonator, ii) being optically coupled to a corresponding one of the N input waveguides and a corresponding one of the secondary waveguides, and iii) being switchable between a first state in which an optical signal in a corresponding one of the N channels is coupled from the corresponding input waveguide into the corresponding secondary waveguide and a second state in which the optical signal in the corresponding one of the N channels is not coupled into the corresponding secondary waveguide; N multi-wavelength mixers; and N output waveguides.

The application discloses a communication system, related equipment and method. The communication system comprises a CO device and a plurality of RRHs. The plurality of RRHs form a ring network through optical fibers, and the CO device is connected to the ring network. The CO device is used for modulating a baseband signal onto N first optical carriers generated by the CO device to obtain N second optical carriers, and transmitting the N second optical carriers to the ring network through a first optical fiber. Any one of the plurality of RRHs is used for obtaining a target optical carrier from the received second optical carrier, converting the target optical carrier into an electrical signal, and transmitting the electrical signal as a downlink signal. The embodiment of the application realizes an all-optical communication system through the layout of optical devices on the architecture and through the optical ring network topology, and the communication system has a self-healing protection function.

A system that steers the bandwidth allocation for ONTs based upon temporal usage of bandwidth.

Examples described herein relate to an interface coupled to a memory and circuitry, coupled to the interface. In some examples, the circuitry is to: based on a configuration, perform switching between packets sent by a first process to a second process by writing packets into a first region of memory and copying the packets from the first region of memory to a second region of memory. In some examples, the first region of memory is accessible to the first process via an optical interconnect and the second region of memory is accessible to the second process via a second optical interconnect.

The optical virtual-circuit-switching network system includes a plurality of optical switches, each including an optical upload module, an optical download module, an optical pass-around module, and an optical fiber connection module. The optical upload module receives uploaded optical signals from the top-of-rack switch, selects the appropriate route and wavelength, and then transmits them to the optical fiber connection module. These signals are then transmit through the optical fiber connection module to the vertically connected optical switch or horizontally connected optical switch. The optical download module receives the optical signals from the vertically connected optical switch and the horizontally connected optical switch, selects and combines these optical signals so as to download them to the top-of-rack switch. The optical pass-around module, along with the optical fiber connection module, is used to redirect the optical signals from horizontal to vertical or from vertical to horizontal.

Provided in the embodiments of the present disclosure are an optical splitter of a passive optical network and an optical signal processing method. The optical splitter comprises: a planar lightwave circuit optical splitter and a planar lightwave circuit filter array, wherein the planar lightwave circuit filter array is used for splitting an input optical signal into a plurality of sub-signals and inputting the plurality of sub-signals into corresponding thin-film filters in the planar lightwave circuit filter array, and a plurality of thin-film filters are used for filtering the plurality of sub-signals respectively and outputting target sub-signals.

An optical-layer module, an access site, and an optical signal processing method are provided, and relate to the field of optical communication technologies. In this application, in optical-layer wavelength-drop processing, the access site performs splitting through a splitter in a broadcast manner. A wavelength-drop wavelength is not fixed, so that the access site has a colorless capability. In wavelength-add processing, to prevent a conflict between a wavelength-add wavelength and an optical signal (that is, a pass-through optical signal) in a main line, a wavelength-add blocker (for example, an optical switch) blocks a wavelength-add signal that has a conflict, thereby avoiding crosstalk between the wavelength-add signal and an existing signal in the main line. Both each wavelength-drop port and each wavelength-add port in an optical-layer board provided in this application support being multiplexed as extended ports. Port extension can improve flexibility of network deployment. In addition, a new board is developed to increase a quantity of ports, thereby reducing development resources and development costs.

Methods, systems, and devices for optical signal measurement are described. A wearable electronic device may activate a first combination of optical sensors, the first combination of optical sensors including a set of transmitter sensors and a set of receiver sensors. In some cases, one or more optical sensor of the first combination of optical sensors may be positioned under a protrusion on an inner surface of the wearable electronic device. The device may measure, at the set of receiver sensors at a first time, one or more signals from the set of transmitter sensors, determine a signal quality metric associated with the one or more signals, and select a second combination of optical sensors for use at a second time based on the signal quality metric.

Embodiments of this application disclose an electro-optic modulator and a transmitter. The electro-optic modulator includes a first waveguide, a second waveguide, at least one first modulation region, and at least one second modulation region. The first modulation region and the second modulation region are distributed in a first direction in which the first waveguide and the second waveguide extend. Electric fields applied to the first waveguide and the second waveguide in the first modulation region have some features different from features of electric fields applied to the first waveguide and the second waveguide in the second modulation region, so that an absolute value of an optical path difference generated by the first waveguide in the first modulation region is approximate to or equal to an absolute value of an optical path difference generated by the second waveguide in the second modulation region.

A distributed reconfigurable switching node for a multi-core optical fiber is disclosed. A method and system for transmission of optical signals. The system includes one or more first switching optical devices configured to switch transmission of one or more optical signals from one or more first fiber cores to one or more second fiber cores. It includes one or more second switching optical devices configured to pass transmission of one or more optical signals from one or more first fiber cores to one or more third fiber cores.

Provided is a communication system comprising one or more first optical communication devices, a second optical communication device that communicates with the one or more first optical communication devices, and an optical transmission path connecting the one or more first optical communication devices and the second optical communication device, wherein the one or more first optical communication devices include a transmission unit that transmits, to the second optical communication device via the optical transmission path, an optical signal of a wavelength within a wavelength range for checking the transmission characteristics in the optical transmission path, and wherein an identification unit that identifies the transmission characteristics in the optical transmission path on the basis of the optical signal of the wavelength within the wavelength range transmitted from the one or more first optical communication devices is included.　

The photonic integrated circuit includes a photonic device. The photonic device includes an input region configured to receive an input signal including a plurality of multiplexed channels. The photonic device includes a metastructure dispersion region configured to partially demultiplex the input signal into an output signal and a throughput signal. The output signal includes a channel of the multiplexed channels. The throughput signal includes a remaining channel of the multiplexed channels. The photonic device includes an output region and a throughput region optically coupled to the metastructure dispersion region to receive the output signal and the throughput signal, respectively. The metastructure dispersion region includes a heterogeneous distribution of a first material and a second material that constitute the metastructure dispersion region to partially demultiplex the input signal into the output signal and the throughput signal.

A node for a multi-plane optical network is optically connectable, for each node of at least two other nodes of the multi-plane optical network through respectively two or more optical links to the other node. The node includes one or more wavelength selective switches (WSSs) having a set of ports. The node receives, with a port, an optical signal from an optical link of a first other node. The one or more WSSs provide at least a frequency sub-band of the optical signal from the port through another port to another optical link of the first other node or a second other node. The optical link and the another optical link are associated with one plane and one other plane of the multi-plane optical network, respectively.

An optical path design device includes: a search unit configured to search for one or more route possibilities from a start point to an end point in an optical network including one or more transmission paths as links and a plurality of node devices as nodes on the basis of topology information of the optical network, information on the start point, and information on the end point; a time derivation unit configured to derive available time which is time at which a frequency band including one or more frequency slots becomes available for communication for each of the transmission paths or the node devices included in the route; and a design unit configured to select the route from the one or more route possibilities that have been searched for on the basis of the available time derived for each of the transmission paths or the node devices and select a frequency band of an optical signal to be transmitted through an optical path in the selected route.

Systems and methods for transducing and storing qubit signals are provided. The system includes a voltage source, a substrate, and a membrane suspended over the substrate. A phononic crystal oscillator is disposed in a first region of the membrane. The phononic crystal oscillator includes a capacitor having a moving electrode including an array of multiple phononic crystal unit cells. The moving electrode is connected to the voltage source. A superconducting circuit disposed in a second region of the membrane. A plurality of phonon shields and an optical resonator may also be disposed on the membrane.

The wavelength division multiplexer for space division multiplexing may comprise a wavelength division multiplexing fan-out device or a pump signal combiner for multicore fibers.

The present disclosure relates to "Electronic devices with high-frequency multi-mode communication capabilities." A wireless system can include a central processor and an access point. The central processor can generate an optical signal on an optical fiber. The optical signal can include an optical local oscillator (LO) signal and one or more carriers. The central processor can modulate different combinations of transverse optical modes, orbital angular momentum, polarization, and / or carrier frequencies of the optical signal to simultaneously transmit respective wireless data streams. The orthogonality of the transverse optical modes, the orbital angular momentum, the polarization, and the carrier frequencies can allow many wireless data streams to be modulated onto the optical signal and simultaneously transmitted and propagated on the optical fiber independent of one another for transmission to one or more external devices.

Systems and methods for a sparse route computation for determining optical paths with defined optical regenerator locations in an optical network include receiving a request to compute one or more paths from a source node to a destination node with one or more regen nodes in an optical network; utilizing the one or more regen nodes as an inclusion hops list; and performing a Shortest Path First (SPF) computation with the inclusion hops list to find the one or more paths with tentative (tent) paths maintained in a tent list and further utilizing a discourage factor in minimal route diversity to order the tent paths in the tent list based on the inclusion hops list.

To flatten the slope of an optical intensity profile in a multi-core optical transmission system to increase system cost.SOLUTION: A variable slope equalization device includes first variable slope equalization means including a plurality of pieces of first slope equalization means, second variable slope equalization means including a plurality of pieces of second slope equalization means, multi-input multi-output first matrix switch means connected to the input side of the first variable slope equalization means, multi-input multi-output second matrix switch means that connects the output side of the first variable slope equalization means and the input side of the second variable slope equalization means through a plurality of optical paths, and multi-input multi-output third matrix switch means connected to the output side of the second variable slope equalization means.SELECTED DRAWING: Figure 1

This application relates to the field of optical communication technologies, and discloses an artificial intelligence computing system and method, to resolve a problem of low communication efficiency caused by a hash conflict and traffic imbalance. In embodiments of this application, link communication between computing nodes in a process of implementing an AI data computing task is implemented through an optical switching network. Compared with using an electrical switching device, a communication link can be determined without using a hash algorithm, so that a hash conflict does not occur, and a problem of traffic imbalance caused by a hash conflict does not occur, thereby avoiding a packet loss caused by congestion, reducing communication time between computing nodes, and improving the communication efficiency. Each computing node supports control of cross links between input ports and output ports of an optical switch switching assembly in the optical switching network. In a process in which a computing node performs a computing task, a control unit of the computing node performs link switching based on a requirement of the computing node.

The solid-state optical cavity may include a first mirror and a second mirror that provide reflective surfaces for reflecting light back and forth within the cavity to create a standing wave at a resonant frequency. A thin-film lithium niobate layer may be deposited between the first mirror and the second mirror. The thin-film lithium niobate layer may be configured to be electrically tunable to optically select the resonant frequency.