10 results about "Wavelength routing" patented technology

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.

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.

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 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.

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 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 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.