936results about "Optical multiplex" patented technology

Various embodiments provide for clock signal distribution within a processor, such as a machine learning (ML) processor, using a photonic fabric.

Various embodiments provide for electro-photonic networks, including a plurality of processing elements connected by bidirectional photonic channels, suited for implementing neural-network models. Weights of the model may be preloaded into memory of the processing elements based on assignments of neural nodes to processing elements implementing them, and routers of the processing elements can be configured to stream activations between the processing elements based on a predetermined flow of activations in the model.

The invention provides a beam forming system which can be applied to the fields of wireless communication systems, automatic driving, artificial intelligence and the like. And small-scale, low-power-consumption and fast-response two-dimensional beam forming can be realized. The system comprises a first optical diffraction module and an array of second optical diffraction modules, the first optical diffraction module comprising at least one input port and a plurality of output ports, each second optical diffraction module in the array of second optical diffraction modules comprising one input port and a plurality of output ports. The first optical diffraction module is used for receiving at least one path of first signal light and generating multiple paths of second signal light with different phases based on the at least one path of first signal light. Each second optical diffraction module is used for receiving one path of second signal light in the multiple paths of second signal light and generating multiple paths of third signal light with different phases based on one path of second signal light, and the multiple paths of third signal light are used for generating multiple paths of first radio frequency signals.

An entangled quantum state receiver includes an optical detector that generates an electrical signal having a signal characteristic in response to detection of a single photon. A first electrical circuit generating an electrical signal having a predetermined duration when the signal characteristic is present at the input. A clock generates a clock waveform with a period. A second electrical circuit generates a state value when the electrical signal has the predetermined duration during a cycle of the clock waveform. A processor is configured to determine received entangled state information from the state value and configured to adjust the clock period based on a background photon count at the optical detector.

Disclosed are an SDBANS controller and associated orchestration system configured to implement scalable transport network slicing in an XGS-PON. Accordingly, the orchestration system configures the SDBANS controller for different regions and maps TN NSSI ID information to an OLT port of an SD-CPON OLT. The OLT port is allocated by the SDBANS controller.

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.

Electro-photonic networks, including a plurality of processing elements connected by bidirectional photonic channels, suited for implementing neural-network models. Weights of the model may be preloaded into memory of the processing elements based on assignments of neural nodes to processing elements implementing them, and routers of the processing elements can be configured to stream activations between the processing elements based on a predetermined flow of activations in the model.

Various example embodiments for providing a passive optical network (PON), supporting communications between an optical line terminal (OLT) and a set of optical network units (ONUs) of a PON, are presented. The PON may be enabled based on use of an optical frequency comb (OFC), generated at the OLT and reconstructed at the ONUs for locking the OFC at the ONUs to the OFC at the OLT. The OFC may include a set of optical frequency lines used as seed lines for reconstruction of the OFC at the ONUs (e.g., the pair of OFC lines at the center of the OFC which may be used to regenerate locked OFCs at the ONUs), a set of optical frequency lines used to support downstream communications from the OLT to the ONUs, and a set of optical frequency lines used to support upstream communications from the ONUs to the OLT.

The embodiment of the invention provides a subcarrier connection establishment method and device, a storage medium and an electronic device, and the method comprises the steps: determining the following configuration parameters according to a first bit rate required by a client signal: the optical branch signal OTSi frequency spectrum center frequency of a transmitting end, the frequency spectrum width occupied by the OTSi of the transmitting end, and the first bit rate required by the client signal; the frequency spectrum center frequency of the OTSi of a receiving end, the frequency spectrum width occupied by the OTSi of the receiving end, the bit rate allowed to be provided by each subcarrier corresponding to the OTSi, and the application code of the subcarrier; and establishing subcarrier connection according to the configuration parameters. Through adoption of the technical scheme, the problem of lack of a subcarrier control technology in related technologies is solved.

Chromatic dispersion compensation is performed in one or more pluggable optical transceiver (POT) devices operating within an intensity-modulated direct-detection (IMDD) optical network. Compensation is performed within each POT using an electrical and / or optical chromatic dispersion module which are controlled by a set of parameters. A network computing device includes a computer processor and a host management interface for communicating with the POT. In the event of a link failure, the computer processor determines a second set of parameters to control the one or more dispersion compensation module(s) of the POT. The second set of parameters are different from a first set of parameters used to control the one or more compensation module(s) in the case of a first optical path. The computer processor causes the POT to use the second set of parameters in place of the first set of parameters.

Provided is an optical access system that performs communication using an optical signal on which management control signals used for management and control are superimposed in a plurality of transmission lines connecting a plurality of subscriber devices, the optical access system including: a plurality of splitters that are provided for the respective transmission lines and split a plurality of optical signals transmitted from the plurality of subscriber devices; a monitoring unit configured to acquire the management control signals from each of the plurality of optical signals split by each of the plurality of splitters; and an output device that is provided between the monitoring unit and the plurality of splitters and outputs the plurality of optical signals split by the plurality of splitters to the monitoring unit.

The invention provides a light beam demodulation detector based on a multi-layer metasurface and a construction method of the light beam demodulation detector based on the multi-layer metasurface, and the light beam demodulation detector comprises an image processing chip and the multi-layer metasurface. The structured light beam to be identified generates a plurality of diffraction beams after passing through the diffraction neural network formed by the multi-layer metasurface; the diffracted light beams generate different light intensity distributions on the upper surface of the image processing chip, so that the image processing chip determines the type of the structured light beams to be recognized based on the light intensity distributions, and demodulation recognition of the light beams is achieved. According to the light beam demodulation detector based on the multi-layer metasurface and the construction method of the light beam demodulation detector, a demodulation component is constructed by utilizing diffraction neural network simulation and the multi-layer metasurface so as to realize demodulation transmission of structured light beams, and recognition of the types of the light beams is realized in combination with an image processing chip; and a compact light beam demodulation detection device with a miniaturized structure is optimally designed.

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.

Integrated laser arrays, photonic devices, packages, and systems are disclosed. An example integrated laser array includes first and second lasers, each laser including a light-emitter structure and a waveguide with a grating. In one aspect, effective pitches of the gratings of the first and second lasers are different by less than about 5 angstroms, while the gratings of the first and second lasers are fabricated with a resolution of at least 1 nanometer. In another aspect, each laser includes a waveguide with left and right sidewall gratings, effective widths of the waveguides of the first and second lasers are different, and an offset between the left and right sidewall gratings of the second laser is different from an offset between the left and right sidewall gratings of the first laser. Integrated laser arrays described herein may be particularly suitable for being implemented in dense wavelength division multiplexed systems.

A device, method, apparatus, and medium for optical channel protection have been disclosed. A method for exemplary optical channel protection may comprise: in response to receiving fault information in an optical transmission network, performing alarm evaluation based on the fault information, wherein the fault information comprises first fault information associated with an electrical layer of the optical transmission network; and generating an action instruction for optical channel switching at least based on the evaluation result.

The invention discloses a tunnel multi-parameter synchronous monitoring method based on a seven-core optical fiber and a fusion association early warning system. The system comprises a sensing module, a data acquisition module, a processing module and an early warning monitoring module, the sensing module comprises a seven-core optical fiber arranged in the tunnel, physical parameters in the tunnel are synchronously monitored through the seven-core optical fiber, and the physical parameters comprise temperature, strain and vibration; the data acquisition module is used for acquiring physical parameter data in real time through the sensing module; the processing module is used for demodulating and fusing the physical parameter data signal to obtain parameter information; and the early warning monitoring module is used for displaying the parameter information in a graphical mode for monitoring, and comparing the parameter information with a corresponding preset threshold value to judge whether the tunnel has a potential health risk so as to carry out early warning. According to the system, the seven-core optical fiber space division multiplexing technology is adopted, and comprehensive and real-time subway tunnel health monitoring and early warning can be provided through multi-parameter fusion measurement.

The inventive system and method of the present invention helps improve transient resiliency of optical network operation by creating one or more optical channel extensions in the network, based on one or more optical data channels. In certain example embodiments, a given provisioned path node may be configured for example to, in addition to expressing and / or dropping a corresponding provisioned optical data channel, also selectively express the provisioned optical data channel through one or more egresses of the provisioned path node that is / are not otherwise employed to establish the provisioned optical data channel path. The presence of such optical channel extension(s) in the optical network can for example serve, in a practical, cost-effective manner, to improve the transient resiliency of one or more downstream links in the network along which one or more of such optical channel extension(s) communicate.

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

An optical assembly, an optical module and a related device, a light splitting unit in the optical assembly receives input signal light obtained by multiplexing signal light of N passive optical networks from a first direction, and demultiplexes the input signal light to obtain first signal light containing M wavelengths and second signal light containing N-M wavelengths, n is an integer greater than 1, M is an integer greater than or equal to 1, and M is less than or equal to N-1, various light beams with different wavelengths can be output at corresponding ports without an external device, an included angle between the first direction and a normal of the first light splitting unit is less than or equal to 45 degrees, and the first direction is greater than the first direction. Therefore, the light splitting unit of the optical assembly realizes light splitting based on a small angle, an extremely narrow light splitting path is established, the optical assembly can be directly applied to an optical module of an optical line terminal, and miniaturization of the optical line terminal is further realized.

A radio-frequency receiver achieves high sensitivity by pumping atoms to high-azimuthal (≥3) Rydberg states. A vapor cell contains quantum particles (e.g., cesium atoms). A laser system provides probe, dressing, and coupling beams to pump the quantum particles to a first Rydberg state having a high-azimuthal quantum number ≥3. A local oscillator drives an electric field in the vapor cell at a local oscillator frequency, which is imposed on a distribution of quantum particles between the first Rydberg state and a second Rydberg state. An incident RF signal field interferes with the local oscillator field, imposing an oscillation in the distribution at a beat or difference frequency and, consequently, on the intensity of the probe beam. The beat frequency component of the intensity of the probe beam is detected, and the detection signal is demodulated to extract information originally in the RF signal.

Allocating network resources to one or more signals that are to be conveyed over the network by calculating a transport capacity for a sublink of the network based on a spectral efficiency of at least one subpath included in the sublink, and allocating the sublink to at least one signal based on the calculated transport capacity.

An optical reception apparatus includes: a reception detection unit that converts an intensity-modulated optical signal transmitted from an optical transmission apparatus into a frequency modulation signal; a frequency demodulation unit that generates a multi-channel signal by performing demodulation processing on the frequency modulation signal; and a derivation unit that derives, for each channel, a difference between transmission quality and required quality of the intensity-modulated optical signal, and transmits feedback information indicating the difference for each channel to the optical transmission apparatus. The adjustment unit may give priority to a channel having high reception power in the optical reception apparatus and reduce the power of the channel, based on the feedback information. The adjustment unit may give priority to a channel having low transmission quality and increase the power of the channel, based on the feedback information.

The invention provides an optical network system and light splitting equipment, and relates to the technical field of optical communication. The optical network system comprises a detection device, a first optical splitter and an optical filter. The first optical splitter comprises a light inlet and N light outlets, wherein N is greater than or equal to 2. A light inlet of the first optical splitter is connected with detection equipment, N-1 light outlets of the first optical splitter are connected with inlets of N-1 optical filters in a one-to-one correspondence manner, outlets of the N-1 optical filters are connected with N-1 light splitting links, and different optical filters are used for selecting optical signals with different wavelengths to pass through. And the detection equipment is used for sending the detection light signals with different wavelengths to the first optical splitter and receiving the detection light signals returned by the at least one optical splitting link. Based on the optical network system, the detection optical signals emitted by the detection equipment can respectively enter different light splitting links, and the detection optical signals returned from the light splitting links and received by the detection equipment can reflect the state information of one light splitting link, so that the measurement and acceptance of the light splitting links can be realized at a local side.

Systems and methods include an optical switch system which provides a combination of μLED arrays, PDs, imaging fiber cables, and crosspoint switch on a single chip. The system includes one or more input ports with each input port configured to connect to an input fiber bundle. The system additionally includes one or more output ports with each output port configured to connect to an output fiber cable, wherein each of the input fiber bundle and the output fiber cable include a plurality of fiber cores. An electrical crosspoint switch is connected to the one or more input ports and the one or more output ports, wherein the electrical crosspoint switch is configured to connect a given input port to a corresponding output port, including all signals in the input fiber cable to the corresponding output fiber cable.

Various embodiments provide for clock signal distribution within a processor, such as a machine learning (ML) processor, using a photonic fabric.

A digital image transmitter includes a wavelength division multiplexer and demultiplexer, a printed circuit board (PCB) unit connected to the wavelength division multiplexer and demultiplexer, a first housing accommodating the wavelength division multiplexer and demultiplexer and the PCB unit, and a second housing covering the first housing, wherein a contact body is arranged between the wavelength division multiplexer and demultiplexer and the first housing, and each of the wavelength division multiplexer and demultiplexer and the first housing contacts the contact body.

This application provides a port detection method and apparatus. In the technical solutions in this application, an OLT or an ONU may determine, based on at least two wavelengths and a preset correspondence, port information that is of an optical splitter and that corresponds to the ONU. That is, a branch port directly or indirectly connected to the ONU is defined by using the at least two wavelengths. In this way, different branch ports can be distinguished by using combinations of a plurality of wavelengths, to define a large quantity of branch ports of the optical splitter by using free combinations of a small quantity of wavelengths.

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.

Various embodiments comprise systems, methods, architectures, mechanisms and apparatus for optical, radio frequency (RF), and / or acoustic data transmission by dividing each of one or more sequences of channel coded bits d into N blocks thereof, which are respectively spatially modulated (SM) with respective pilot sequences and mapped to constellations to provide thereby respective symbol streams, which are modulated in accordance with orthogonal signal division multiplexing (OSDM) to provide respective SM-OSDM signals, which are transmitted via optical sources, RF antennae, acoustic transducers, and the like during respective timeslots such that a receiver associated with a plurality of receiving devices may reconstruct the bitstream used to form the one or more sequences of channel coded bits d.

An entangled quantum system can be generated using entanglement-generating circuits that operate non-deterministically. Multiple instances of the entanglement generating circuit can be operated and outputs of successful instances can be propagated. The circuit can be implemented such that a photon that is part of the final output state passes through as few as one or two active switches from generation to the final output state.