21 results about "Wavelength routing" patented technology

The invention discloses a hybrid node optical network-oriented service deployment method and device and a storage medium, and belongs to the technical field of hybrid node optical networks, and the method comprises the following steps: constructing a service deployment task model according to a WDM-MG hybrid node optical network, the service deployment task model takes the minimum optical channel establishment cost and the maximum bandwidth utilization rate as objective functions; different routing strategies and granularity switching strategies are constructed, the routing strategies comprise a wavelength index minimum strategy and a wavelength route minimum strategy, and the granularity switching strategies comprise a fixed granularity transmission strategy and a dynamic granularity transmission strategy; according to the method, different strategy combinations are constructed through the routing strategy and the granularity switching strategy, the target function is solved by using the different strategy combinations to obtain a plurality of service deployment schemes, and the scheme meeting the target is taken as the final service deployment scheme, so that high-efficiency and low-cost hybrid node optical network service deployment can be realized.

One embodiment provides a computer system. The computer system includes a plurality of processing units, a plurality of memory channels, and an arrayed waveguide grating router (AWGR). A respective processing unit is coupled to an array of tunable optical transceivers. A respective memory channel is coupled to a plurality of memory banks. Each memory bank is associated with a unique optical wavelength and can be accessed via the corresponding wavelength. Each memory channel is coupled to an individual output port of the AWGR, and the tunable optical transceivers of each processing unit are respectively coupled to different input ports of the AWGR, thereby allowing each processing unit to communicate with any memory bank associated with any memory channel using an appropriate tunable optical transceiver tuned to the corresponding optical wavelength associated with the memory bank.

The invention provides a network topology relation graph dynamic generation method, which belongs to the technical field of network topology, and comprises the following steps: starting an improved Tarjan strong connectivity component algorithm in each subnet partition to carry out loop detection, executing distributed loop verification on cross-subnet boundary nodes, collecting ARP table entries, routing table entries, OpenFlow flow tables and virtualization platform interface data, and sending the ARP table entries, the routing table entries, the OpenFlow flow tables and the virtualization platform interface data to each subnet partition; the method comprises the following steps: performing power spectrum analysis on an optical power monitoring point on optical network equipment to identify a wavelength channel occupancy state, reconstructing a wavelength routing path of a DWDM system, and performing two-stage submission on topological data acquired by distributed detection nodes by adopting a causal consistency protocol to synchronously generate a global unified network topological relation graph; the technical problems that the incremental updating efficiency is low and the cross-layer mapping relation is difficult to reconstruct in real time when the network topology dynamically changes are solved.

The present invention discloses a service deployment method, device and storage medium for a hybrid node optical network, belonging to the technical field of hybrid node optical networks. The method comprises: constructing a service deployment task model based on a WDM-MG hybrid node optical network, wherein the service deployment task model takes minimizing the optical channel establishment cost and maximizing the bandwidth utilization as objective functions; constructing different routing strategies and granularity switching strategies, wherein the routing strategies include a wavelength index minimum strategy and a wavelength routing minimum strategy, and the granularity switching strategies include a fixed granularity transmission strategy and a dynamic granularity transmission strategy; constructing different strategy combinations through the routing strategies and granularity switching strategies, solving the objective function using the different strategy combinations, obtaining multiple service deployment schemes, and taking the scheme that meets the objectives as the final service deployment scheme, thereby realizing efficient and low-cost hybrid node optical network service deployment.

This application provides a wavelength router, an optical transmission network, and a data center, aiming to reduce the size of the wavelength router. In the wavelength router provided by this application, the grating structure is integrated on the second outer wall of the first optical prism, improving the integration density of the wavelength router. Simultaneously, the first outer wall forms a cylindrical reflector. A light beam input from the fiber array passes through the cylindrical reflector and the grating structure to a deflection unit. After being deflected by the deflection unit, it passes through the grating structure and the cylindrical reflector again before being output to the fiber array. This folds the optical path of the light beam between the fiber array, the deflection unit, and the grating structure, reducing the size of the wavelength router.

The present invention discloses an optical switching device and method combining space division and wavelength division, which includes a first-stage space-division optical switch combination, a second-stage switching unit, and a third-stage space-division optical switch combination. The second-stage switching unit is composed of four cyclic arrayed waveguide gratings. The input signal is output to the cyclic arrayed waveguide grating through the selection of the output port by the first optical switch, and the routing exchange is completed by using the cyclic feature of the cyclic arrayed waveguide grating and output through the corresponding second optical switch. In the present invention, when the number of switching ports is expanded, the second-stage switching unit remains four AWGs unchanged, reducing the number of required control units. Moreover, by using space-division optical switching, the optical path is switched by actively configuring the optical routing components, and by using wavelength-division optical switching, the working wavelength of the input signal is actively tuned, and combined with the wavelength routing characteristics of the cyclic arrayed waveguide grating, the active selection of the output port of the optical signal is performed, achieving strict non-blocking.

This invention relates to optical switch network chips, specifically to an optical switch network chip with multi-wavelength routing capabilities and an optical signal routing method, to address the shortcomings of existing wavelength-routing optical switching network schemes, such as system complexity, large chip area, and crosstalk superposition. The optical switch network chip of this invention with multi-wavelength routing capabilities is used to realize the routing and switching of multi-wavelength optical signals. It includes an input port, an output port, multiple wavelength-routing optical switch units sequentially arranged between the input and output ports, and multiple waveguide interconnect networks connecting adjacent wavelength-routing optical switch units. Each wavelength-routing optical switch unit includes multiple wavelength-selective optical switches for wavelength selection and output, ultimately enabling optical signals input at any input port to alternately pass through multiple wavelength-routing optical switch units and multiple waveguide interconnect networks, and be routed to any output port.

The invention discloses an all-optical networking system based on wavelength routing, and relates to the technical field of communication, the system comprises at least two groups, each group comprises at least two nodes, and each node comprises at least two graphics processors; wherein the communication mode between the at least two graphics processors is optical communication, the groups and the nodes in the groups are communicated through leaf switches, and different groups are communicated through ridge switches. According to the technical scheme, the graphic processors in the nodes are in optical communication, the problem that a traditional data center based on the graphic processors is low in transmission efficiency is solved, and the data transmission efficiency is improved.

The invention discloses an on-chip optical switching structure based on a flat passband filter array and a control method of the on-chip optical switching structure. The on-chip optical switching structure comprises an input / output waveguide array, a wavelength division multiplexing optical switch array composed of flat passband filters and a switch control unit. The control method comprises the steps of coupling multi-wavelength signals through an input / output waveguide array, determining propagation paths of different wavelength signals through a dynamic multi-wavelength routing strategy, demultiplexing the multi-wavelength signals through an on-chip reconfigurable flat passband filter, recombining the signals of different wavelengths of the same target port at the same time, and combining the signals of different wavelengths with the same target port at the same time. And the optical switch array is calibrated by combining optical power measurement signal feedback, so that full-automatic, low-loss and low-crosstalk switching of multi-wavelength high-speed signals is realized. The complexity of the on-chip wavelength division multiplexing optical switch array and the power consumption of a control system can be effectively reduced, and the bandwidth density of a chip is improved.

The invention relates to the technical field of optical switching, in particular to an optical switching system and device. The optical switching system comprises a space switching layer and a wavelength switching layer, the space switching layer receives an input optical signal of an input optical module, and transmits a to-be-dimmed signal needing wavelength routing in the input optical signal to the wavelength switching layer; the wavelength exchange layer receives a to-be-dimmed signal, performs wavelength routing processing on the to-be-dimmed signal to generate a scheduling optical signal, and transmits the scheduling optical signal to the space exchange layer; the spatial switching layer also receives the scheduling optical signal and routes the scheduling optical signal to the receiving module group. An optical signal is transmitted to the space exchange layer through the input optical fiber to be scheduled to any output direction, direction scheduling of spatial dimensions is achieved, when a wavelength level signal needs to be scheduled, a to-be-dimmed signal is issued to the wavelength exchange layer to be subjected to wavelength routing processing and then is sent to the space exchange layer, and the space of an available port is enlarged.

The application relates to a multi-wavelength laser and a router with fast switching of output wavelengths and ports. The technical scheme adopted by the application is as follows: a multi-wavelength laser has an NxN in-cavity wavelength router, any pair of input and output port combinations of which has minimum loss at a certain specific wavelength; a port selection semiconductor optical amplifier has N inputs corresponding to the inputs of the in-cavity wavelength router, one end of the optical amplifier is made into a high reflection or partial reflection surface, and the other end is connected to the input of the in-cavity wavelength router; a wavelength selection semiconductor optical amplifier has N outputs corresponding to the outputs of the in-cavity wavelength router, one end of the optical amplifier is connected to the output of the in-cavity wavelength router, and the other end is provided with a partial reflector; an optical resonant cavity of a certain specific wavelength is formed between the reflection surface of any port selection semiconductor optical amplifier and the partial reflector of any wavelength selection semiconductor optical amplifier.

The invention discloses a multi-plane intelligent computing center optical interconnection architecture based on a multi-wavelength tunable emitter and a communication method. The architecture comprises an optical switching plane formed by modularization interconnection of a plurality of small-port array waveguide gratings, and a communication node array comprising a plurality of communication nodes. Each communication node is equipped with a plurality of optical transmitting modules and optical receiving modules, and the optical transmitting modules are integrated with multi-wavelength tunable transmitters and can simultaneously generate and independently tune a plurality of optical signals with different wavelengths. Through wavelength tuning and the cyclic wavelength routing characteristic of the array waveguide grating, an optical link with variable capacity can be dynamically established between any source node and any destination node, and one-to-many fan-out communication is supported. According to the method, nanosecond reconstruction delay, fine-grained bandwidth flexible adjustment and high-energy-efficiency interconnection with large-scale nodes are realized, dynamic, burst and skew communication loads of an intelligent calculation center are effectively adapted, and the network performance and energy efficiency are improved.

Disclosed is a system of measurement for optical loss that includes the light source unit that is further provided to the first fiber port assembly. The first fiber port assembly is connected with the first grating coupler unit. The first grating coupler unit is connected with the splitter unit. The splitter unit diverts the light to the plurality of routes. The plurality of route is combined with the combiner module. The combiner module is connected with the second grating coupler unit. The second grating coupler unit is connected with the second fiber port assembly. The second fiber port assembly is connected with an optical power detector module.

The invention relates to the technical field of optical communication transmission, in particular to a high-integration DWDM transmission system for a 5G bearer network, and the system comprises a signal collection module which captures a wavelength routing structure signal sample in real time into original data; the multi-dimensional analysis module performs cross analysis on spectrum and time dimensions, establishes a wavelength channel signal correlation model and precipitates characteristic parameters; the dynamic evaluation module imports characteristic parameters to calculate a multi-dimensional quantitative result, including a channel stability and quality degradation hot spot distribution map; the regional calibration module calibrates the evaluation result according to the geographic coordinates of the hot spots to obtain calibration stability; the instruction generation module automatically generates an operation control instruction sequence according to the calibration value. According to the system, through two-dimensional cross analysis and regional calibration, the transmission channel quality evaluation accuracy and control effectiveness are improved, and the high-reliability transmission requirement of the 5G bearer network is met.

The invention provides an all-optical switching method and system for all-to-all set communication acceleration, and the method is characterized in that the method comprises the steps: obtaining a plurality of servers to be communicated, each server comprises an all-interconnection network interface and an all-interconnection optical transceiver module, and each all-interconnection network interface is connected to an all-optical switching network through the all-interconnection optical transceiver module; all the servers are interconnected through the circulating waveguide grating router in the all-optical switching network, the circulating waveguide grating router is based on a switching mechanism of wavelength routing, and the all-interconnection network interface of each server generates multiple paths of wavelength signals which are switched to the all-interconnection network interface of the corresponding server through the circulating waveguide grating router. According to the invention, the global all-to-all set communication can be completed by at most two hops, and the acceleration of all-to-all set communication is realized.

The invention relates to a wavelength hard isolation method, which comprises the steps of planning a wavelength allocation scheme of each safety partition, and determining the number of wavelength channels and a waveband allocation strategy based on a power grid network topology structure, a transmission distance range and an expected capacity demand; a wavelength routing strategy of the OLT equipment is configured, and wavelength sets of different security partitions are multiplexed to single fiber transmission through a wavelength multiplexer; oNU terminal devices are configured, each ONU terminal device is provided with a wavelength selective optical filter in advance, and only the specified wavelength of the corresponding security partition is received; and verifying the physical isolation performance of each wavelength channel to ensure that the power grid security partition requirement is met. Different wavelength routing strategies are configured on OLT equipment, a wavelength selective optical filter is preset on ONU terminal equipment, only specified wavelengths of corresponding safety partitions are received, hard isolation of different areas according to the wavelengths is achieved, and safety protection regulations of an electric power monitoring system are met.

The invention provides a photoelectric collaborative data high-speed switching system. The photoelectric collaborative data high-speed switching system comprises an electric processing unit, an optical switching unit and an optical switching controller, the electric processing unit receives a data frame, splits the data frame into a plurality of cell slices, and allocates a cache address to each cell slice; the optical switching controller receives the request sending message, inquires wavelength scheduling configuration information according to destination address information in the request sending message, and generates a wavelength scheduling control instruction; the optical switching unit receives the wavelength scheduling control instruction, controls the conduction state of the controllable optical switch array according to the wavelength scheduling control instruction, and establishes an optical channel from a source end to a destination end by using the wavelength routing characteristic of the arrayed waveguide grating router; and the electric processing unit is also integrated with a remote direct memory access unit which outputs the cache address and the data length of each cell slice after receiving the sending permission message, so that the target-end electric processing unit directly reads the cell slices from the source-end cache and recombines the cell slices into data frames.

The invention discloses a partition-based satellite network optical wavelength interconnection method, device and equipment and a storage medium, and relates to the technical field of satellite communication, and the method comprises the steps: determining partition parameters according to satellite orbit operation characteristics and transmission distance limitation; constructing an optical wavelength resource pool, and dividing the optical wavelength resource pool into intra-regional wavelength resources and inter-regional wavelength resources; generating an intra-region bidirectional wavelength routing allocation strategy and an inter-region bidirectional wavelength routing allocation strategy based on the partition parameters, the intra-region wavelength resources and the inter-region wavelength resources; applying the intra-region bidirectional wavelength routing allocation strategy and the inter-region bidirectional wavelength routing allocation strategy to satellite network networking so as to implement optical interconnection on the satellite network networking to obtain an optical interconnection network; the electrical layer logic topology is generated based on the optical interconnection network, the satellite packet switching network is obtained, a wavelength resource allocation mechanism is simplified, and optimal configuration of inter-satellite cross-node optical interconnection links is achieved.

The application discloses a three-dimensional multiplexing signal on-chip all-optical wavelength conversion device based on a single nonlinear waveguide. The wavelength conversion device mainly comprises a transverse magnetic mode demultiplexer, a transverse electric mode demultiplexer, a polarization beam splitter and a multimode nonlinear waveguide. The application utilizes wavelength multiplexing technology, mode multiplexing technology and polarization multiplexing technology, and combines the dispersion engineering of a silicon-based waveguide, so that a multi-wavelength-dual-polarization-dual-mode hybrid multiplexing signal realizes wideband and efficient all-optical wavelength conversion in a multimode nonlinear optical waveguide. Under the participation of pump light, the signal light is converted into idle frequency light carrying the same data as the signal light. The application can greatly improve the transmission capacity of a communication system, reduce the number of wavelength converters in a communication network, improve the flexibility of wavelength routing, and has the advantages of simple structure, high efficiency, small area, easy integration and expansion, and the like. The application can be widely applied to the field of super-large-capacity all-optical signal processing in an all-optical communication network.

The utility model relates to a 3 * 6 mini integrated optical fiber dense wavelength division multiplexing device, which comprises an OD2.7 * L16mm large glass tube, two 2.1 * L6.5 mm glass tubes, a lens with a grain diameter gradually changing refractive index, a seven-optical-fiber pigtail and a dense wavelength division multiplexing filtering film layer, and the radial gradient refractive index lens, the seven-optical-fiber pigtail and the dense wavelength division multiplexing filter film layer form a filter seven-optical assembly. The 3 * 6 mini integrated optical fiber dense wavelength division multiplexing device is high in integration level, small in size, small in insertion loss, high in isolation degree, high in return loss, small in polarization dependent loss, excellent in directivity, stable in working performance and high in reliability. The method can be widely applied to optical fiber communication networks such as a DWDM network, a wavelength router, an optical fiber amplifier, a CATV optical fiber system, an OADM optical fiber system and the like, and has relatively outstanding applicability.

The invention provides a WSS wavelength management system and method, and the system comprises a modulation module which is used for modulating WSS management information to an optical signal carrying service information; and the WSS control module is used for analyzing the WSS management information from the optical signals and configuring wavelength routing according to the WSS management information. According to the system provided by the embodiment of the invention, the management information of the WSS and the optical signal bearing the service information are directly transmitted along the path, and the intermediate optical amplifier site is transparently transmitted, so that the fault domain is effectively reduced, and the time delay and the power consumption in the process of analyzing and loading the management information of the WSS by the cross-segment node are reduced.