7results about "Ring-type electromagnetic networks" patented technology

A switching control method, network element and system in an SDH ring network, applied to a master processor of a network element in the SDH ring network, the network element comprising an eastward single board and a westward single board, and the total capacity of the panel ports in the eastward single board and the westward single board is greater than the total capacity of the backboard ports in the eastward single board and the westward single board respectively; the method comprises: obtaining virtual container (VC) cross corresponding information of the eastward single board and the westward single board, the VC cross corresponding information indicating the VC cross corresponding relationship between the panel ports and the backboard ports in the single board; when the optical fiber communication connection corresponding to the currently used single board in the eastward single board and the westward single board is disconnected, performing a multiplexing section protection switching operation of the network element according to the VC cross corresponding information, so as to improve the accuracy and reliability of the switching operation.

The application discloses an optical signal inner circulation delay system based on electro-optic polarization modulation, comprising a signal light source, a first polarization beam splitter prism, a first electro-optic polarization modulator, a second polarization beam splitter prism, a second electro-optic polarization modulator, a third polarization beam splitter prism, a first full reflection mirror, a first lens, a first optical fiber collimator, a single-mode / multi-mode optical fiber, a second lens, a second optical fiber collimator and a second full reflection mirror, forming a ring-shaped light path. The length of the single-mode / multi-mode optical fiber and the high level duration of the modulation electric signal are adjusted, the repetition frequency and the pulse width of the output optical signal can be changed respectively, and therefore the application can also be used for converting continuous light into controllable pulsed light. The number of times that the signal light circulates in the ring-shaped light path can be controlled through the loaded electric signal, the delay time is flexibly adjusted, and the delay time range is expanded.

This application provides a communication node and an optical communication network, belonging to the field of optical communication technology. The communication node includes a light source module, a link splitting module, and an optical transceiver module. The light source module provides local oscillator light and signal light to the optical transceiver module; the link splitting module receives downlink signals from the optical fiber, splits the downlink signals into N sub-downlink signals, and sends one sub-downlink signal to the optical transceiver module and the next node respectively, where N is a positive integer greater than 1; the optical transceiver module, based on the local oscillator light, obtains a signal with a wavelength matching the local oscillator light from the received downlink signals; it also generates an uplink signal with a wavelength different from the downlink signal based on the signal light, and sends the uplink signal to the optical fiber through the link splitting module. The uplink signal and the received downlink signal are transmitted in the same optical fiber but in opposite directions, saving optical fiber costs and fiber sourcing costs.

The application relates to the field of data center networks, and discloses a wired-wireless hybrid interconnected star-moon matrix data center network architecture and a scheduling method. The architecture comprises a plurality of modularized star-moon units, all the star-moon units are connected through horizontal matrix expansion and vertical hierarchical expansion to form a three-dimensional star-moon matrix network. The architecture has strong compatibility and scene adaptation capability, can be used for full deployment of a newly-built super-large-scale computing center, can be used for local modification and upgrading of an existing data center, can be widely applied to various application scenes such as cloud computing, artificial intelligence training, high-performance computing and edge data center, and has high popularization value and industrial application prospect.

The application discloses a noise suppression device of a multi-wavelength direct modulation laser, which comprises a direct modulation laser array, an optical splitter, a four-port fiber circulator, a low-loss nonlinear optical resonant cavity and a modulation module, the output of the direct modulation laser array is connected with the second port of the four-port fiber circulator, the third port of the four-port fiber circulator is connected with the low-loss nonlinear optical resonant cavity, the fourth port of the four-port fiber circulator is connected with the first port, and an injection locking closed loop is formed; the modulation module is electrically connected with the direct modulation laser array, the modulation frequency of the corresponding direct modulation laser is independently adjusted, and each wavelength laser can meet the resonance condition and the injection locking condition in the low-loss nonlinear optical resonant cavity, that is, the characteristic frequency shift is equal to the modulation frequency or an integer multiple of the modulation frequency. The application utilizes the super-narrow linewidth characteristic of nonlinear stimulated scattering and combines the injection locking technology, so that the linewidth of the direct modulation laser can be compressed to the Hz order, that is, the frequency noise is well suppressed. In addition, the application has the characteristics of multi-wavelength flexible adaptation, high cavity power utilization rate, simple structure and high integration degree.

This utility model relates to the field of highway traffic management technology, and in particular to a cloud-edge-device collaborative intelligent highway active control device, comprising: a cloud control host unit, including a central processing unit and an AI accelerator card; an edge computing node cluster, installed in cabinets along the highway, including a central processing unit and an AI accelerator card; and an end-side device cluster, including data acquisition devices and execution devices. The data acquisition devices include a traffic flow detection sensor, an image acquisition device, and an optical distance measurement device; the execution devices include an information dissemination device, a traffic signal control device, an audio prompt device, and a physical isolation device. The cloud control host unit is connected to the edge computing node cluster, and the end-side device cluster is also connected to the edge computing node cluster. This utility model significantly improves the response speed, reliability, and maintainability of highway active control through the built-in protocol gateway of the edge computing nodes and the end-to-end high-speed redundant communication link.

This application discloses an optical emitting component, an optical module, and an optical transmission system for use in optical modules, including: a driving circuit, a laser, a circulator, a photodetector, and a processor. Based on the unidirectional transmission characteristics of the circulator, the backscattered optical signal in the optical transmission channel is isolated from the laser and input to the processor. The processor determines the receiving state at the receiving end of the optical transmission channel based on the driving current sampling signal and the backscattered signal, and controls the magnitude of the driving current according to the receiving state. This allows for adjustment of the optical module's transmit optical power according to the actual transmission link configuration, avoiding the problem of device damage or insufficient receiving sensitivity in optical modules with fixed optical power during service cutovers or transmission link changes.