360results about "Bidirectional transmission" 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 relates to a satellite-borne laser communication terminal in-orbit optical axis rapid calibration method, and aims to improve the pointing precision and stability of a satellite-borne laser communication system. According to the method, the optical axis of the laser communication terminal is quickly and accurately calibrated by comprehensively applying technical means such as coordinate system conversion, an error correction matrix, least square method optimization and a golden section method. According to the method, complex coordinate system conversion and an error correction matrix are comprehensively applied, and high-precision correction of a theoretical pointing vector is achieved; the golden section method is combined with the optimization strategy of the least square method, so that the convergence speed and precision of the calibration process are improved; higher real-time performance and automation degree are achieved, related data can be acquired and processed in real time, and real-time correction of the optical axis pointing error is achieved; the method has wide applicability and expandability, and can be applied to other spacecraft systems needing high-precision pointing control.

The invention relates to the technical field of network security, and particularly discloses a front digital boundary security switching method and system based on an optical one-way transmission characteristic and a storage medium, and the method comprises the steps that a front digital boundary security gateway of a service extranet receives a request, analyzes a context parameter of the request, and stores the context parameter of the request; legality verification is carried out on the carried exchange account, the key and other request parameters, and request context parameters are signed and encrypted; after the legality verification is passed, the service extranet front digital boundary security gateway encapsulates the request context parameter into a request data packet, a unidirectional data transmission optical shutter connection pool from the extranet to the intranet is used, and the request data packet is sent to the intranet front digital boundary security gateway after the connection is obtained; and after receiving the request data packet, the intranet front digital boundary security gateway decrypts and verifies the signature of the request message in the request data packet, reconstructs the request message after the verification is successful, and sends the request message to a real target server to obtain a result.

The invention relates to an underwater optical communication LDPC (Low Density Parity Check) coding processing method. The method comprises the following steps: determining a current channel quality grade based on a real-time communication distance and channel state information; dynamically selecting LDPC (Low Density Parity Check) coding parameters and modulation orders in combination with equipment mobile data and channel quality levels, and generating an adaptive parameter combination; performing error correction coding on the data according to the selected parameters and generating an optical communication signal; transmitting to a receiving end through an optical channel; and dynamically updating the coding parameter and the modulation order based on the feedback information of the receiving end. According to the method, the problem that a traditional fixed coding scheme is insufficient in error correction capability or wastes resources in a dynamic distance scene is solved by predicting the equipment moving trend and the channel state in real time and adaptively adjusting the coding parameters and the modulation mode, the error rate is remarkably reduced, the communication efficiency is improved, and the method is suitable for a complex and changeable underwater optical communication environment.

The invention relates to the technical field of data management, and discloses a method for realizing intelligent management of an all-optical network based on big data analysis, which comprises the following steps of: acquiring operation data of the all-optical network, positioning an abnormal point location of link optical power of the all-optical network, and performing data linear repair on power data corresponding to the abnormal point location to obtain target data; analyzing wavelength characteristics of the all-optical network, analyzing signal transmission stability of optical signals of the all-optical network, and analyzing optical signal characteristics of the all-optical network based on the wavelength characteristics and the signal transmission stability; analyzing equipment operation state characteristics of the all-optical network; identifying data service types of the all-optical network, analyzing flow change rules of different service types in the data service types, and analyzing service flow periodicity characteristics of the all-optical network; and performing operation anomaly analysis on the all-optical network to obtain an operation anomaly analysis result, and constructing an intelligent management strategy of the all-optical network based on the operation anomaly analysis result. According to the invention, the operation efficiency and stability of the all-optical network can be improved.

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 present invention provides a semiconductor apparatus achieving interconnection by using an on-chip all-optical switching network module and a manufacturing method therefor. The semiconductor apparatus comprises: a circuit board, which has a plurality of electrical connection paths; an on-chip all-optical switching network module, which is disposed on the circuit board, the on-chip all-optical switching network module comprising a photonic chip and a plurality of analog electrical chips for transceiving which are arranged above the photonic chip, the photonic chip comprising a plurality of communication nodes, a plurality of optical connection paths, and at least one on-chip optical switch which are in corresponding communication connection with the plurality of analog electrical chips for transceiving, and the on-chip optical switch being configured to alter the connection topology among the plurality of communication nodes; and a plurality of computing modules, which are arranged on the circuit board and, by means of the electrical connection paths on the circuit board, are in corresponding communication connection with the plurality of analog electrical chips for transceiving of the on-chip all-optical switching network module, so that the connection topology among the plurality of computing modules can be altered by the on-chip optical switch.

The invention relates to the technical field of spectrum allocation, and discloses a spectrum allocation method applied to a hybrid optical fiber network and a readable storage medium, and the method comprises the steps: building a plurality of spectrum window planes in a modulation format based on the hybrid optical fiber network topology by taking the number of frequency slots required by a to-be-transmitted service as the spectrum width, selecting the shortest path to construct an optical fiber selection scheme, and calculating the transmission cost to select a candidate scheme; and obtaining candidate schemes according to a sequence of modulation format spectrum efficiency from high to low and spectrum window planes from front to back until available routes exist in the obtained candidate schemes, establishing an optical channel, and performing service transmission on the to-be-transmitted service. According to the method, different optical fibers are selected to establish the optical channels, spectrum allocation is more efficiently carried out, the utilization rate and flexibility of spectrum resources are improved, the influence caused by ultra-low loss optical fibers is fully considered, and under the situation of a hybrid optical fiber network, spectrum fragments are reduced, the network blocking rate is effectively reduced, and the network performance is improved.

The invention discloses a communication network architecture and a train. According to the communication network architecture, a control ring network, a monitoring ring network and an entertainment ring network are established on a train, a control switch focuses on transmission of train control data, and high real-time performance of train operation is ensured; the monitoring switch is responsible for real-time state monitoring data, so that the accuracy of fault detection and system state monitoring is improved; and the entertainment switch provides stable network service for the passengers, and the communication requirements of the passengers are met. According to the invention, each compartment is provided with a redundant switch, so that the reliability and safety are improved; the switchboards are connected in series to form a ring network, so that the expandability of the architecture is improved; the vehicle-mounted data center is arranged at the head train and the tail train of the train so as to effectively isolate a control network from a monitoring network, can process and analyze data in a centralized manner and further optimizes train dispatching and system control; the architecture design not only improves the data transmission efficiency, but also enhances the security and intelligence level of the system.

The invention relates to the technical field of optical fiber transmission, and discloses a bidirectional optical fiber transmission system. Comprising a first wavelength division multiplexing / demultiplexing device, a second wavelength division multiplexing / demultiplexing device, a first power amplifier, a second power amplifier, a first preamplifier, a second preamplifier, a first optical fiber switching module, a second optical fiber switching module, a first filter, a second filter, a third filter and a fourth filter. The first optical fiber switching module and the second optical fiber switching module are provided with a first optical fiber or a second optical fiber for transmitting optical signals; according to the technical scheme, automatic switching to the standby optical fiber link is supported when the single optical fiber link fails or the performance is reduced, shunting and combining of wave band signals are achieved through the filter, and the stability and the anti-interference capability of transmission signals are ensured.

The invention discloses a light protection device and method. The device comprises an optical splitter, an echo extraction module, an echo detection module and a control module, the optical splitter is connected with the echo extraction module, the echo extraction module is connected with the echo detection module, the echo detection module is connected with the control module, and the control module is connected with the optical splitter; the optical splitter is used for carrying out power distribution on main and standby lines in the optical fiber communication system according to the target splitting ratio; the echo extraction module is used for extracting echo signals of the main and standby lines; the echo detection module is used for performing signal detection processing on the echo signal to obtain a detection result; the control module is used for determining the abnormal state of the main and standby lines according to the detection result and adjusting and updating the target splitting ratio based on the abnormal state. The technical problems of poor timeliness and high energy loss of an optical fiber line protection method in related technologies are solved.

An Optical Time Domain Reflectometer (OTDR) includes a transmitter configured to transmit first OTDR pulses, at a first pulse period and at a wavelength λ, over a fiber under test; a receiver configured to receive signals from the fiber under test; and circuitry configured to set the first pulse period and to average measurements resulting from the received signals, wherein the OTDR is configured to operate with a second OTDR at another end of the fiber under test for a bidirectional OTDR measurement, wherein the second OTDR uses the same wavelength λ and transmits second OTDR pulses at a second pulse period, different from the first pulse period.

The embodiment of the invention provides an optical communication assembly which is applied to the optical communication field and the optical fiber communication field. The optical communication assembly comprises an optical transmitter and a first tail fiber. The light emitter is connected with the first tail fiber. The first tail fiber and the first optical fiber are connected through a first optical port connector. The first tail fiber is a plastic optical fiber. The first optical fiber is a glass optical fiber. The optical transmitter is used for generating a first optical signal and transmitting the first optical signal to the other optical communication assembly through the first tail fiber and the first optical fiber. In the technical scheme provided by the invention, the plastic optical fiber and the glass optical fiber are combined for use, so that the noise can be reduced, and low-cost and high-quality optical communication is realized.

The invention relates to a digital twinning method for a data center optical network. The method is applied to an optical network, a plurality of edge computing nodes and a center node are deployed in the optical network, corresponding digital twin models are deployed on the edge computing nodes, and the method comprises the following steps: obtaining edge computing node data, the edge computing node data comprising optical signal state information and equipment state information; inputting the edge computing node data into a corresponding digital twinborn model to obtain a node prediction result; and transmitting the edge computing node data and the node prediction result to a central node, performing optimization calculation based on the edge computing node data and the node prediction result to obtain an optimization result, and using the optimization result to indicate an operation of coordinating the edge computing node. Compared with traditional centralized processing, the distributed digital twinborn model has the advantages that due to the fact that the edge computing nodes are located at the key positions of the optical network, data can be directly acquired and processed, delay of data transmission is reduced, and the overall computing capacity is enhanced.

The invention relates to the technical field of intelligent computing networks, in particular to an intelligent computing optical switching networking system and an enhanced data processing unit.The intelligent computing optical switching networking system comprises computing nodes and an optical path switch; the computing node comprises an enhanced data processing unit, a data processing unit and a computing unit, the enhanced data processing unit is provided with an RDMA network interface and realizes priority flow control (PFC) and quantitative congestion control (QCN) based on an RoCEV2 protocol; the enhanced data processing unit is also provided with a first switching port and a second switching port, and the first switching port and the second switching port are respectively connected with the optical path switch to construct a Scale-Up network and a Scale-Out network. Compared with an electric switching scheme, the intelligent calculation optical switching networking system provided by the invention has the characteristics of low power consumption and low time delay, and can adjust the networking topology according to the requirement of an intelligent calculation parallelization strategy, thereby remarkably improving the networking performance and the parallel calculation speed.

The invention discloses a mobile communication emergency digital remote system, and relates to the technical field of mobile communication, the mobile communication emergency digital remote system comprises a base station, a signal feedback transmission unit, a far-end machine and a near-end machine which are in electric signal connection; and the base station is used for receiving, processing and sending signals. Through cooperative work of the far-end machine and the near-end machine, the flexibility and adaptability of the communication system are remarkably improved, the far-end machine is responsible for signal receiving and transmitting, the near-end machine is responsible for signal processing and power adjustment, and high-speed and low-delay data transmission is ensured through optical fiber connection between the far-end machine and the near-end machine; the system can be flexibly configured according to different environmental conditions and user requirements, and in addition, the system has the capability of automatically adjusting the power, the output power can be optimized in real time according to the change of the signal quality, and the stability and reliability of communication are ensured.

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

The invention provides a communication device and system. The device is applied to an optical fiber communication point-to-multipoint framework. The device comprises an optical module, a processing module, a first element and a second element. The first element is used for acquiring a second signal, and correlation exists between the second signal and the first signal. The first signal includes a signal received by the communication device. The second element is configured to couple a second signal to a transmit link of the communication device. The optical module is also used for converting the second signal into an optical signal and transmitting the optical signal to slave optical equipment associated with the communication device in a point-to-multipoint architecture. According to the invention, the problem of hidden nodes in a point-to-multipoint architecture based on optical fibers can be solved, and the performance and stability of a Wi-Fi network are improved.

The invention relates to the technical field of communication, in particular to dual-mode ONU (Optical Network Unit) equipment with an uninterruptible power supply and based on a PON (Passive Optical Network) system. The dual-mode ONU comprises a power storage and supply module, a dual-mode ONU module and a control unit, wherein the power storage and supply module comprises an AC220V power supply interface, a DC12V power supply interface and a USB discharge interface; the dual-mode ONU module comprises an optical signal receiving interface and an optical signal transmitting interface; the control unit can automatically control the charging and discharging strategy of the power storage and supply module according to the state of the power storage and supply module and the condition of an external power supply, so as to ensure the uninterrupted work of the dual-mode ONU module. According to the PON system-based dual-mode ONU equipment with the uninterruptible power supply provided by the invention, the power storage and supply module, the dual-mode ONU module and the control unit are integrated, so that the power supply stability and the flexible switching of network modes are realized, and the reliability of network services and the user experience are improved.

Conventional high performance computer connections are electron-based systems, which require the memory packages to be as close as mechanically possible to the computation engine. Low power and high bandwidth communication, e.g. photonic, links can drastically change the architecture of high-performance computers by eliminating the bottlenecks in communication and augment existing memory systems to allow them to be both high capacity and high bandwidth simultaneously. A computer system comprises: a plurality of memory aggregation devices configured to retrieve data from and store data in a plurality of random access memory modules forming a unified contiguous memory address space disaggregated from a processing unit; a plurality of computational devices configured for simultaneously launching a plurality of data signals including memory read and / or write requests for the data to the plurality of memory aggregation devices; and a plurality of communication links coupling each of the plurality of memory aggregation devices to each of the plurality of computational devices for transferring the data therebetween.

The invention discloses an intelligent optical path protection monitoring system for a power system. The intelligent optical path protection monitoring system comprises a master station end arranged in a communication machine room in a power supply area and substation ends arranged in transformer substations. In the master station end, an optical transceiver is connected with an OLP protection unit, an optical pulse tester is connected with the OLP protection unit through a program control multi-path optical switch, and a master control board is connected with the optical pulse tester and the OLP protection unit. In the substation end, the optical transceiver is connected with the OLP protection unit, and the main control board is connected with the OLP protection unit; and the OLP unit of the main station end is connected with the OLP unit of each sub-station end through a main link optical fiber and a standby link optical fiber. According to the invention, optical path automatic switching protection and optical cable on-line visual monitoring analysis can be realized, and a real-time, rapid and accurate fault point positioning means can be realized.

Disclosed are a traffic prediction method for a metropolitan optical network and related devices. The traffic prediction method may include: classifying nodes in the metropolitan optical network into multiple node sets based on locations of the nodes; for nodes in each node set, inputting temporal traffic data of the nodes into a traffic prediction model corresponding to the node set to obtain traffic prediction results of the nodes in the node set. In the method, the traffic prediction model is obtained by deep learning using historical time-series traffic data of the node sets as a training set.

The invention discloses a road collapse monitoring method, device and equipment and a storage medium, relates to the field of traffic safety, is applied to monitoring equipment located on a monitoring point, and comprises the steps that a preset channel quality detector is used for checking a first target optical fiber to judge whether the channel quality changes or not, when the change degree meets a preset condition, generating an abnormal signal for analysis to obtain an optical fiber abnormal reason analysis result; performing communication transmission with each preset signal receiving and answering device through a second target optical fiber so as to determine whether a target monitoring road corresponding to the monitoring point collapses or not and determine a corresponding initial collapse position when the target monitoring road collapses; the initial collapse position is corrected based on the optical fiber abnormity reason analysis result, and the corrected collapse position is sent to the target platform so that the target platform can execute collapse early warning operation; the first target optical fiber and the second target optical fiber are laid on a target monitoring road. According to the method and the device, the possibility of road collapse is predicted, and the collapse position is quickly positioned.

Various example embodiments supporting optical communications in an optical communication system may be configured to support joint stimulated Brillouin scattering (SBS) suppression and polarization tracking for a set of orthogonal polarization optical channels in an intensity modulated / direct detection (IM / DD) passive optical network (PON). Various example embodiments may be configured to support joint SBS suppression and polarization tracking for a set of orthogonal polarization optical channels based on a set of frequency tones (e.g., using a single frequency tone per optical channel in the set of orthogonal polarization optical channels, respectively) such that SBS suppression is supported for transmissions from the transmitter (e.g., based on application of the frequency tones to the optical channels) and polarization tracking is supported at the receiver (e.g., based on use of one or more of the frequency tones of the optical channels in the set of orthogonal polarization optical channels for polarization tracking).

The invention relates to a communication port resource pairing device and method, and the device comprises a communication port which is provided with a main tag, the main tag comprises a main tag chip and a main tag antenna connected with the main tag chip, and the main tag antenna is wirelessly connected with a radio frequency identifier; and the communication plug is in mutual plugging connection with the communication port, the communication plug is provided with a slave tag, and the slave tag comprises a slave tag chip electrically connected with the master tag chip. When the communication plug and the communication port are mutually plugged and connected, the master tag chip is electrically connected with the slave tag chip, the slave tag chip does not need to be provided with an antenna, only the slave tag chip needs to be integrated on the communication plug, the size of the communication plug can be designed to be smaller, and the miniaturization requirement of a high-density wiring connector in the future is met. The radio frequency identifier associates and binds the information of the master tag chip and the information of the slave tag chip one by one, so that one-to-one entry of tag objects is omitted, and the resource information entry and association efficiency is greatly improved.

The invention provides a semiconductor device for realizing interconnection by using an on-chip all-optical switching network module and a manufacturing method thereof. The semiconductor device includes: a circuit board having a plurality of electrical connection paths; the on-chip all-optical switching network module is arranged on the circuit board and comprises a photon chip and a plurality of analog electric chips which are arranged above the photon chip and are used for transmitting and receiving; the photon chip comprises a plurality of communication nodes, a plurality of optical connection paths and at least one on-chip optical switch which are in corresponding communication connection with the plurality of analog electric chips for receiving and transmitting, and the on-chip optical switch is configured to be capable of changing the connection topology among the plurality of communication nodes; and the plurality of calculation modules are arranged on the circuit board and are in corresponding communication connection with the plurality of analog electric chips for transmitting and receiving of the on-chip all-optical switching network module through the electric connection paths on the circuit board, so that the connection topology among the plurality of calculation modules can be changed by the on-chip optical switch.

The embodiment of the invention discloses a data sending method, a communication device and a storage medium, which are applied to the technical field of communication and are used for informing an opposite-end channel of a fault when a port fault occurs. The method comprises the following steps: a first communication device acquires that a first channel corresponding to a first optical module is abnormal, wherein the first channel is a channel between the first optical module and a second optical module; the first communication device sends and / or receives data by using N channels in M channels corresponding to the first optical module, the M channels are channels between the first optical module and the first communication device, the N channels do not include a second channel, the second channel is at least one channel corresponding to the first channel in the M channels, and N is smaller than M; and the first communication device sends control information to the first optical module, wherein the control information is used for instructing the first optical module to turn off light corresponding to the first channel. According to the embodiment of the invention, the opposite terminal can be informed of the fault of the first channel by turning off the light corresponding to the first channel.

The invention relates to the technical field of data transmission, and provides a device for realizing fgOTN transmission and intersection, which comprises a first branch unit, a switch unit and at least one second branch unit, and is characterized in that the first branch unit is connected with the switch unit, and the switch unit is respectively connected with each second branch unit; the first branch unit is used for receiving customer service data and packaging the customer service data in an fgOTN frame format to obtain an Ethernet packet corresponding to the customer service data; the switch unit is used for receiving the Ethernet packet transmitted by the first branch unit, and determining a target transmission port required for transmitting the Ethernet packet to each second branch unit based on a static MAC table and a media access control MAC address of each second branch unit; and forwarding the Ethernet packet to each second branch unit in a cross manner through the target transmission port. According to the invention, fgOTN cross transmission is directly realized by using the existing switch, the characteristics of the existing switching network are compatible, and the cost of fgOTN cross equipment is reduced.

The invention discloses a 10Gbps ONU (Optical Network Unit) end receiving and transmitting integrated chip based on XGSPON (XGSPON) matched with a VCSEL (Vertical Cavity Surface Emitting Laser), belongs to the field of integrated circuits and vehicle-mounted all-optical network optical communication, and aims to solve the problem that the existing vehicle-mounted all-optical PON network scheme cannot meet the low power consumption requirement. The chip is used for short-distance optical transmission of a vehicle-mounted all-optical network and is manufactured by a continuous mode receiving unit CM RX, a burst mode transmitting unit BM TX, a digital control unit Digital and a power management unit POWER on the same wafer substrate. The POWER converts an external 3.3 V voltage into a 1V voltage, and provides a working voltage for an on-chip main channel; the BM TX drives a VCSEL laser to emit an optical signal through a burst mode laser driver so as to send uplink burst data to an automobile control unit; the CM RX is used for continuously receiving optical signals by using a photodiode PD and receiving downlink continuous data of an automobile control unit; and the Digital is communicated with an automobile control unit through two signal lines SCL and SDA, so that the control of internal parameters of a chip and the optimization of data transmission quality are realized.