Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

1574 results about "Optical switch" patented technology

An optical switch is a device that selectively switches optical signals on or off or from one channel to another. The former is known as an optical (time-domain) switch or an optical modulator, while the latter is called an optical space switch or an optical router. Since the switching can be temporal or spatial, such switches are analogous to one-way or two-way switches in electrical circuits. In general, optical modulators and routers can be made from each other.

All-optical switching device with high isolation for automotive and other applications

The invention relates to an optically controllable switching device having a first and second line section, between which an optically controllable switch (T2) is inserted, and having a sensor element (SE). The optically controllable switch (T2) disconnects or connects depending on an optical switching signal (SB), whether the switch is "on" or "off". The sensor element (SE) comprises a carrier material (TM) with crystals comprising one or more paramagnetic centers (NV). When irradiated with pump radiation (LB), the sensor element (SE) emits fluorescent radiation (FL) which depends on the magnetic flux density B at the location of the sensor element (SE). A line current (I LTG) in the first line section of the line (LTG) generates a magnetic field with a flux density B which, with sufficient current strength, influences the fluorescent radiation (FL) from one or more paramagnetic centers (NV). The optically controllable switching device has first means (LWL1, PL1, LIV) for irradiating the one or more paramagnetic centers (NV) with pump radiation (LB) and second means (LWL2, F1, PD, LIV) for detecting and separating the fluorescent radiation (FL) and for detecting a measured value signal which depends on the intensity of the fluorescent radiation (FL) and / or on the phase shift of the modulation signal of the temporal profile of the intensity of the fluorescent radiation (FL). The optically controllable switching device has third means (LIV) for generating an optical switching signal (SB) and for controlling the state of the optically controllable switch (T2) using this optical switching signal (SB).The optical switching signal (SB) depends on the intensity of the fluorescence radiation (FL) and / or on the phase shift of the modulation signal of the temporal course of the intensity of the fluorescence radiation (FL).
Owner:ELMOS SEMICON AG +1

Distributed optical fiber temperature detection double-end correction device and method

The invention provides a distributed optical fiber temperature detection double-end correction device and method, and belongs to the technical field of optical fiber logging, the upper end of a logging optical cable is connected with a ground reference optical fiber ring, and the lower end of the logging optical cable is connected with an optical fiber grating sensor; the electronic temperature sensor is placed in the ground reference optical fiber ring, the measurement and control module is connected with the electronic temperature sensor, and the temperature of the ground reference optical fiber ring is measured through the electronic temperature sensor; the pump light source and the DTS measurement module are connected with the COM optical splitter; the optical switch is used for switching DTS distributed optical fiber measurement and optical fiber grating sensor measurement; temperature values measured by the DTS distributed optical fiber and the optical fiber grating sensor serve as reference data to adjust measurement parameters of the DTS measurement module, and double-end correction of DTS temperature measurement data is completed. The ground reference optical fiber is combined with the electronic thermometer, and the optical fiber grating sensor is adopted underground, so that distributed optical fiber temperature measurement double-end correction is realized.
Owner:CHINA NAT PETROLEUM CORP +1

Single-core self-healing type looped network networking method and system

The invention relates to the technical field of hydropower engineering, and discloses a single-core self-healing type looped network networking method and system, and the method comprises the steps: dividing a whole network into a plurality of sub looped networks; each sub-ring network operates independently; the light switch in each sub-ring network adopts an A / B end connection mode; reversely connecting the B end of the last measuring point to the A end of the initial measuring station by using an optical fiber to form a closed physical structure; configuring a protocol on the switch, and controlling a data flow path through the protocol; different sub-ring networks are connected through RJ45 ports, and a CAT5E shielded twisted pair or an Ethernet interface is used; when a certain node or link fails, the protocol automatically triggers a switching mechanism; the master station optical transceiver monitors the states of all nodes in real time and displays fault points through a network management interface. The system comprises a sub-ring network module, a control data flow module and a fault point display module. The problems that a traditional networking method of hydropower engineering is poor in reliability, and self-healing cannot be achieved after an intermediate node is disconnected are successfully solved.
Owner:POWER CHINA KUNMING ENG CORP LTD

Optical communication network routing optimization method and system

The invention discloses an optical communication network route optimization method and system, particularly relates to the technical field of multi-domain optical network collaborative networking, and is used for solving the problem of path selection deviation caused by topology abstraction and simplification in an existing multi-domain optical network. Intra-domain topology compensation parameters representing potential path resource consumption in sub-domains are reversely generated by acquiring inter-domain topology abstract information of a cross-domain optical network, and a hidden link competition relationship shared by cross-domain optical paths is dynamically monitored in combination with real-time link resource data to generate a competition intensity index; evaluating a port resource consumption weight based on a compensation parameter and a competition intensity index, fusing a load state to generate an optimal port selection weight, and finally screening a global path through a weight priority and triggering an optical switching node instruction to establish a cross-domain optical path; dynamic collaborative optimization of resource consumption and competition conflicts in the multi-domain optical network is realized, the accuracy of cross-domain path selection and the global utilization rate of network resources are effectively improved, and the risks of redundancy jump and local link congestion are reduced.
Owner:FUJIAN XINTONG COMM TECH DEV CO LTD

Chiplet communication using an optical communication substrate

Described herein are a computing systems comprising a photonic interposer having an optical network comprising a plurality of waveguides and a plurality of controllable optical switches; an electronic die having a surface bonded to the photonic interposer, an inner interface comprising a first plurality of ports electrically coupling the electronic die to the photonic interposer through the surface; and an outer interface comprising a second plurality of ports electrically coupling the electronic die to the photonic interposer through the surface, wherein the outer interface at least partially encloses the inner interface.
Owner:LIGHTMATTER INC

Method for optimizing dispersion effect of broadband millimeter wave phased array and self-adaptive calibration

The invention provides a broadband millimeter wave phased array dispersion effect optimization and adaptive calibration method, and relates to the field of satellite communication. According to the method, a beam pointing error of a millimeter wave satellite communication phased-array antenna caused by a dispersion effect is reduced based on a real-time delay module switched by an optical fiber and an optical switch, and a calibration interval is determined by using a vector average algorithm in combination with working frequency and bandwidth; data obtained after equiphase surface compensation is used as compensation data of a corresponding frequency band to be stored in the antenna, when the antenna works at different frequencies, the pre-stored compensation data in the corresponding frequency band is called according to polarization characteristics, and corresponding resolving phase data of each unit at the current frequency point and pointing direction are superposed to obtain an overlapped resolving phase data; and directional diagram beam pointing under the frequency point is realized. The problem that the antenna beam pointing error is caused by the dispersion of the broadband millimeter wave satellite communication phased-array antenna is solved. According to the method, the beam pointing precision of the millimeter wave satellite communication phased-array antenna is improved, and rapid frequency switching and beam switching are realized.
Owner:BEIJING INST OF REMOTE SENSING EQUIP

Lighting apparatus

A lighting apparatus includes a light source plate, multiple types of LED modules, a switch connector, a manual switch, a controller and a main housing. The multiple types of LED modules respectively emit lights of different parameters. The switch module is used for holding a state among multiple candidate states. The switch connector is disposed at least partially on a back side of the light source plate. The manual switch is coupled to the switch module via the switch connector to change the state. The controller is coupled to the switch module for determining a set of driving currents supplied to the multiple types of LED modules to emit a mixed light of a required parameter corresponding to the state of the switch module. a main housing for holding the light source plate. The main housing has a lateral wall.
Owner:LEEDARSON GREEN LIGHTING

System and method for supporting court cross-network audio and video signaling two-way interaction

The invention discloses a court cross-network audio and video signaling two-way interaction system and method. The system comprises a multi-protocol access adaptation module, a security isolation module and the like. The multi-protocol access adaptation module is provided with a special access adaptation unit for multiple protocols; the security isolation module realizes physical isolation through a security data exchange platform and a one-way audio and video optical shutter, and a built-in signaling security detection unit detects signaling; the signaling conversion module converts the signaling into an internal uniform format and adapts to the internal uniform format; the signaling processing module processes signaling, extracts information, schedules resources and feeds back a result; the network adaptation module adjusts transmission parameters; the identity authentication and authorization module uses multi-factor authentication and fine-grained authorization. The method comprises the steps of signaling initiating and receiving, identity authentication and authorization, multi-protocol access adaptation, signaling conversion processing and the like. The system solves the problems of cross-network communication protocol compatibility and the like, and improves the convenience and safety of judicial services.
Owner:南京通达海软件有限公司

Unidirectional optical fiber transmission system

The invention relates to the technical field of optical fiber transmission, and discloses a unidirectional optical fiber transmission system, which comprises a first optical splitter, a second optical splitter, a third optical splitter, a first optical fiber, a second optical fiber, a first filter, a second filter, a first detection module, a second detection module, an optical switching module and a control module, when the first optical splitter receives optical signals and outputs the optical signals to the first optical fiber and the second optical fiber respectively, the control module controls the optical switching module to gate the second optical splitter to receive the optical signals transmitted by the first optical fiber according to detection results of the first detection module and / or the second detection module, or controls the optical switching module to gate the second optical splitter to receive the optical signals transmitted by the second optical fiber. Gating a third optical splitter to receive the optical signal transmitted by the second optical fiber; according to the technical scheme, the misjudgment rate is effectively reduced, and the accuracy and response speed of link switching are improved.
Owner:SHENZHEN GUANGPAI COMM TECH CO LTD

Multifunctional indoor lighting system based on AI

The invention discloses a multifunctional indoor lighting system based on AI, and provides an intelligent and personalized lighting scheme. The system comprises a human body detection module, a light induction module, an emotion recognition module, a music rhythm module, a central control module, a user interaction module and a communication module. The human body detection module uses an infrared sensor, a camera or a radar to monitor personnel activities in real time and automatically control a light switch. The light sensing module dynamically adjusts the brightness through a photosensitive sensor to ensure optimal illumination; the emotion recognition module analyzes emotion in combination with a camera and an AI algorithm, and automatically adjusts the color and brightness of light; the music rhythm module captures music rhythms through a microphone, so that light changes along with the music rhythms, and atmosphere is created. The central control module integrates sensor data, and utilizes an AI algorithm to accurately adjust the light effect. A user can set a personalized scene through a smart phone APP, a voice assistant or a touch panel. And the communication module adopts a Wi-Fi or 2.4 G wireless technology to realize equipment interconnection and remote control. The system has the advantages of intelligent control, energy conservation, environmental protection, multifunctional integration and the like, is widely suitable for families, offices and entertainment venues, and improves the lighting experience.
Owner:WUHAN POLYTECHNIC UNIVERSITY

Communication method between graphics processors, product, equipment and medium

The invention discloses a communication method between graphics processors, a product, equipment and a medium, relates to the technical field of high-performance calculation and artificial intelligence acceleration, and is applied to a stand-alone system comprising a plurality of graphics processors and a central photoelectric hybrid switching chip constructed based on interconnection of an electric switching matrix and an optical switching matrix. The graphics processor is connected with the central photoelectric hybrid switching chip through an optical link and an electric link; the method comprises the following steps: performing data classification on to-be-transmitted data of a source graphics processor; if the to-be-transmitted data is a control flow, the source graphics processor is controlled to send the to-be-transmitted data to an electric switching matrix through an electric link, and then the to-be-transmitted data is routed to a target graphics processor in the graphics processors; and if the to-be-transmitted data is a data stream, the source graphics processor is controlled to send the to-be-transmitted data to the optical switching matrix through the optical link, and then the to-be-transmitted data is routed to the target graphics processor. Interconnection between graphics processors is optimized to improve communication efficiency between graphics processors.
Owner:SHANDONG YUNHAI GUOCHUANG CLOUD COMPUTING EQUIP IND INNOVATION CENT CO LTD

Semiconductor apparatus and manufacturing method therefor

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.
Owner:SHANGHAI XIZHI TECH CO LTD

Variable beam divergence angle laser communication terminal and rapid capturing method thereof

The invention discloses a variable beam divergence angle laser communication terminal and a rapid capturing method thereof, and belongs to the technical field of optical communication equipment. Comprising a main telescope, a fine tracking fast reflecting mirror, a beam splitter, an optical filter, a beam splitter, a beacon receiving lens group, a beacon detector, a signal transmitting lens group, an advanced aiming fast reflecting mirror, a signal receiving lens group, a receiving optical fiber amplifier, a multi-core optical fiber splitter, an optical switch and a transmitting optical fiber amplifier, a signal light emitting light path, a beacon light receiving light path and a signal light receiving light path are formed; the signal light emission light path provides emission light beams through different mode field optical fibers and performs shaping and variable beam divergence angle emission on the emission light by using different paths of an emission mirror group, and the signal light receiving light path is used for completing collection, shaping, coupling and light amplification on input signal light. And the beacon light receiving optical path is used for collecting, shaping and converging the input signal light, and positioning a target light spot by using an image positioning detector. According to the invention, the remote capturing efficiency can be improved.
Owner:NANJING INTANE OPTICS ENG

Lithographic apparatus, metrology systems, illumination switches and methods thereof

A system includes an illumination system, an optical element, a switching element and a detector. The illumination system includes a broadband light source that generates a beam of radiation. The dispersive optical element receives the beam of radiation and generates a plurality of light beams having a narrower bandwidth than the broadband light source. The optical switch receives the plurality of light 5 beams and transmits each one of the plurality of light beams to a respective one of a plurality of alignment sensor of a sensor array. The detector receives radiation returning from the sensor array and to generate a measurement signal based on the received radiation.
Owner:ASML NETHERLANDS BV +1

Transformer body fault comprehensive monitoring system and method based on optical fiber sensing

The invention discloses a transformer body fault comprehensive monitoring system and method based on optical fiber sensing, and belongs to the technical field of transformer monitoring. The transformer body fault comprehensive monitoring system comprises a self-compensation type optical fiber sensing module, a multi-path optical fiber penetrating device, an optical fiber signal demodulation analysis device, an optical switch and a fault monitoring host; the self-compensating optical fiber sensing module comprises a main sensing unit group and a reference sensing unit group, the main sensing unit group is used for monitoring temperature, stress, gas, partial discharge and vibration signals of the transformer, and the reference sensing unit group is deployed in a non-monitoring area outside the transformer; the main sensing unit group and the main sensing unit group form a differential measurement pair to generate a net signal for eliminating environmental interference; the fault monitoring host comprises a multi-parameter dynamic correlation analysis module and an abnormal mode identification module, and is used for carrying out correlation analysis on monitoring data of different sensing units, identifying abnormal signals, carrying out real-time comparison on the abnormal signals based on a correlation analysis result, and determining an abnormal type and a fault position of the transformer.
Owner:STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER CO

Compact atom interferometry inertial navigation sensors with tailored diffractive optics

Various optical systems for use in a light pulse atomic interferometer (LPAI)-based one-, two-, or three-axis accelerometer or gyroscope are disclosed. As an LPAI accelerometer or gyroscope may employ many different laser beams to implement the LPAI functionality, ways of combining these different laser beams to thereby simplify the optical systems are desired. The cooling laser beam portion of the optical system may be simplified using one or more reflective grating chips. The Raman laser beam optics may be simplified using combiners and separators. For LPAI systems sensing along three axes, various optical switching schemes may be employed, including ones that generate variable data-rates with a primary sensing axis having a higher data-rate than the secondary sensing axes. Further, by combining various laser beams in a time-multiplexed manner, the number of optical fiber tethers to a sensor head may be reduced.
Owner:NATIONAL TECHNOLOGY & ENGINEERING SOLUTIONS OF SANDIA LLC

On-chip optical interconnection and switching chip and application system thereof

The invention discloses an on-chip optical interconnection and switching chip and an application system thereof. Wherein the on-chip optical interconnection and exchange chip is integrated by a power divider, a bidirectional optical transceiver unit and an optical switch unit; the application system of the on-chip optical interconnection and switching chip comprises a multi-wavelength light source used for generating multi-wavelength optical carrier signals, a transceiving unit control and clock module used for bidirectional transceiving unit feedback / amplifier control and clock synchronization, and an optical switching control module used for switching an optical switching unit switching link. The chips and the modules are used for realizing optical interconnection and optical switching of the special electrical computing chip ASIC. According to the invention, bidirectional optical interconnection and exchange of special computing electric chips such as a CPU, a GPU, a DPU and the like can be realized by utilizing an on-chip optical interconnection and exchange technology, the interconnection rate is high, the exchange switching time is short, computing power cluster networking oriented to artificial intelligence application can be supported, and the application prospect is good.
Owner:ZHEJIANG LAB

Deconvolution super-resolution imaging method and device based on deep learning denoising and medium

The invention relates to the technical field of biological microscopic imaging, and discloses a deconvolution super-resolution imaging method and device based on deep learning denoising and a medium. The method comprises the following steps: acquiring a to-be-denoised image of a to-be-imaged structure marked by fluorescent molecules; de-noising the image to be de-noised by using a preset image de-noising neural network to obtain a de-noised image; a training data set for training the network is generated by utilizing the optical switch characteristics of optical switch fluorescent molecules, and the optical switch fluorescent molecules are used for marking to-be-imaged structures of samples in the training data set; the emission spectrum of the fluorescent molecules is overlapped with the emission spectrum of the fluorescent molecules of the optical switch; and carrying out deconvolution processing on the denoised image to obtain a super-resolution imaging image. According to the invention, the large-scale and high-quality true value image is obtained by using the optical switch characteristic of the optical switch fluorescent molecules, and the denoising effect of the image denoising neural network is improved; and denoising the image by using the network, and then carrying out deconvolution on the denoised image to realize large-view living cell single-frame super-resolution imaging.
Owner:INSTITUTE OF BIOPHYSICS CHINESE ACADEMY OF SCIENCES

Network topology configuration method, communication system and related equipment

The invention provides a network topology configuration method, a communication system and related equipment, and the method comprises the steps: enabling a network controller to analyze a training task before an AI model starts distributed training, determining the traffic demand information of the training task, and transmitting the traffic demand information to the AI model; the traffic demand information comprises bandwidth demand quantity among different processors in a training process of an AI training task, network topology information of the photoelectric hybrid networking can be determined based on the traffic demand information, and then configuration information of the optical switching equipment is generated based on the network topology information. According to the invention, the configuration information of the optical switching equipment is acquired, so that the optical switching equipment can perform link switching based on the configuration information to complete topology reconstruction of photoelectric hybrid networking, the network controller can actively perform flow planning before AI model training, and the problem of long network delay caused by slow link switching speed of the optical switching equipment in the training process can be avoided.
Owner:HUAWEI TECH CO LTD

Multi-photon optical fiber array endoscopic imaging device and method based on hollow spiral scanning

ActiveCN120918554ASurgeryEndoscopesGroup velocity dispersionFiber array
The invention discloses a multi-photon optical fiber array endoscopic imaging device and method based on hollow spiral scanning, and belongs to the technical field of biological imaging. The device comprises a laser collimation and beam expansion module, a pulse chirp module, a light beam switching module, an endoscopic detection module and a fluorescence acquisition module. The light beam switching module comprises an optical switch and an optical fiber array composed of at least two low-group-velocity dispersion single-mode optical fibers. The endoscopic detection module drives the optical fiber array to execute hollow spiral scanning through the resonance driver, the track starting point is not located at the view field original point, and central dense sampling is avoided. According to the method, the optical fibers are switched through the optical switch, so that the optical fibers execute spatial non-coincident hollow spiral scanning, multi-photon signals such as fluorescence, second harmonic and fluorescence lifetime are acquired, a central hole is complemented through image reconstruction and fusion, and a complete field imaging result is obtained. Light damage of the central area is remarkably reduced, the imaging resolution uniformity is improved, the fused image is true and reliable based on physical sampling, and the system stability is high.
Owner:SHENZHEN UNIV

8*8 lithium niobate array optical switch

The invention discloses an 8 * 8 lithium niobate array optical switch, and belongs to the technical field of integrated photon and optical communication. Comprising twenty switch units of Mach-Zehnder interferometer structures, and each switch unit is provided with a modulation arm composed of an upper bent waveguide and a lower bent waveguide and is provided with a push-pull type loading electrode. The switch units are combined in a multi-stage array mode and are connected through crossed waveguides, and the 8 * 8 array non-blocking optical switch is formed by using twenty switch units. According to the invention, the 2 * 2 optical switch units with small size and high modulation efficiency are designed, the transverse size of a modulation arm is shortened by adopting upper and lower bent waveguides, the driving voltage is reduced by combining a push-pull electrode loading technology, and finally the high-density 8 * 8 array optical switch is constructed by twenty units. By utilizing the electro-optical effect of lithium niobate, through the optimization of a bent waveguide structure and the driving of a push-pull electrode, low-power-consumption and high-speed optical path switching is realized, and a high-integration-level routing solution is provided for a high-speed optical communication system.
Owner:CHONGQING UNIV

OEO amplifier with high-speed hard switching function and optical transmission system

The invention discloses an OEO amplifier with a high-speed hard switching function and an optical transmission system, and relates to the technical field of optical amplifiers, the OEO amplifier comprises three magneto-optical switches, an optical splitter group, a photoelectric detector group, a real-time comparison circuit, a logic gate control circuit and a driving circuit; the photoelectric detector group collects optical signal power to generate an electric signal; the real-time comparison circuit performs voltage threshold judgment on the electric signal; the logic gate control circuit is connected with the output end of the real-time comparison circuit so as to synchronously control the switching states of the three magneto-optical switches according to a voltage threshold judgment result; the driving circuit is used for driving the magneto-optical switch to synchronously execute a switching action; when the OEO amplifier detects that optical signals in any direction are interrupted, all the magneto-optical switches finish synchronous switching within 100 microseconds, and the end-to-end optical signal switching time difference is smaller than 2 picoseconds. The method is suitable for a single-fiber bidirectional optical communication environment requiring high frequency, high precision and high stability.
Owner:GUANGZHOU VISINT COMM TECH

Parameter measuring device and method of optical switch and optical communication equipment

The invention discloses a parameter measuring device and method of an optical switch and optical communication equipment, and relates to the technical field of optical switch measurement, and the parameter measuring device of the optical switch comprises an optical path module, a signal conditioning circuit, a driving module, a signal acquisition module and an upper computer. The optical path module converts the optical signal into a current signal; the signal conditioning circuit conditions the signal into a voltage signal and amplifies the voltage signal; the driving module provides a driving signal and a synchronous triggering signal; the signal acquisition module acquires a voltage signal based on the trigger signal; the upper computer calculates performance parameters of the optical switch according to the voltage signals acquired for multiple times, wherein the performance parameters at least comprise two items of insertion loss, extinction ratio, switching time and the like; according to the technical scheme, one-key measurement of performance parameters such as insertion loss, extinction ratio, switching time, polarization-dependent loss, insertion-dependent loss and repeatability of the optical switch can be realized, meanwhile, the measurement cost of the optical switch is reduced, and the test efficiency and accuracy are improved.
Owner:E-PHOTICS(SHENZHEN)COMM INC

On-line monitoring multi-main-path power optical fiber automatic switching protection system and method

The invention discloses an on-line monitoring multi-main-path power optical fiber automatic switching protection system and method, and belongs to the technical field of optical fiber monitoring and diagnosis, and the system comprises a main control module, an OTDR module, an optical switch module, and a routing and Ethernet module. Wherein the OTDR module monitors optical terminal equipment in real time to obtain optical fiber communication data; the main control module processes the optical fiber communication data by adopting an FPGA (Field Programmable Gate Array), compares the processed data with a preset threshold value and generates a switching decision instruction and alarm information; the routing and Ethernet module uploads the real-time state data of the optical fiber to an upper computer; receiving and responding to the alarm information; a switching instruction generated by the FPGA is issued to the optical switch module; and the optical switch module responds to the switching decision instruction generated by the main control module and executes physical channel switching of multiple paths of optical fibers. According to the invention, stable execution of data transmission and data processing can be ensured, and the stability and rationality of optical fiber automatic switching protection are improved.
Owner:CHANGCHUN UNIV OF SCI & TECH

Optical devices and systems for optical source redundancy

Systems, devices, and methods are provided for built-in redundancy in optical devices that output an optical signal, for example, to photonic integrated circuits. The device and systems disclosed herein include a plurality of optical sources coupled to a plurality of waveguides. Each adjacent pair of the plurality of waveguides are coupled to an optical switching devices that comprises an interferometer having a first branch comprising a phase-shift mechanism coupled to one waveguide of the pair of waveguides. A voltage bias can be applied to the phase-shift mechanisms to tune a respective phase difference and direct an optical signal from any of the plurality of optical sources to the output end of the optical device. According to various examples disclosed herein, the phase-shift mechanisms comprises metal oxide semiconductor (MOS) capacitors.
Owner:HEWLETT PACKARD ENTERPRISE DEV LP

Multi-target three-dimensional measurement device and method based on double-optical-comb femtosecond laser radar

The invention discloses a multi-target three-dimensional measurement device and method based on a double-optical-comb femtosecond laser radar, and relates to the field of femtosecond laser measurement, and the device comprises a double-optical-comb laser source, a single-detector time-sharing switching receiving module, a beam splitting and optical switch module and a scanning galvanometer module which are connected in sequence, and further comprises a single-detector time-sharing switching receiving module, a beam splitting and optical switch module and a scanning galvanometer module which are connected in sequence. The signal control processing module is connected with the single-detector time-sharing switching receiving module, generates a reference pulse signal and a target pulse signal based on the above modules, carries out distance calculation according to the reference pulse signal and the target pulse signal of each target light path, determines a to-be-measured distance of a target object, and sends the to-be-measured distance to the single-detector time-sharing switching receiving module; and performing three-dimensional reconstruction on the target object according to the to-be-measured distance of the target object and the angle information of the scanning galvanometer, and generating a point cloud or a three-dimensional profile diagram of the target object in the current scene, so that the system implementation difficulty and the measurement error can be reduced.
Owner:GUILIN UNIVERSITY OF TECHNOLOGY

Large-scale high-power high-speed optical switch based on silicon nitride platform on silicon

The invention relates to the technical field of optical switches, in particular to a large-scale high-power high-speed optical switch based on a silicon-on-silicon nitride platform, which comprises a first silicon nitride waveguide, a second silicon nitride waveguide, a first optical path distribution unit and a second optical path distribution unit, the first optical path distribution unit is used for correspondingly distributing a first input optical signal into N paths of first output optical signals; the second silicon nitride waveguide is correspondingly provided with N paths of input ports; the first ends and the second ends of the N silicon waveguides are respectively connected with the output port of the first silicon nitride waveguide and the input port of the second silicon nitride waveguide; a first conversion area and a second conversion area are arranged at the joint of the silicon waveguide and the first silicon nitride waveguide and the joint of the silicon waveguide and the second silicon nitride waveguide respectively, and the corresponding conversion areas are used for achieving conversion transmission of optical signals on different waveguides. The problem that an existing optical switch is difficult to bear high power is solved.
Owner:LIGHTSTANDARD CO LTD

Thin film electro-optical crystal-silicon nitride heterogeneous integrated N*N high-speed optical switch array and preparation method thereof

The invention relates to a thin film electro-optical crystal-silicon nitride heterogeneous integrated N * N high-speed optical switch array and a preparation method thereof. The thin film electro-optical crystal-silicon nitride heterogeneous integrated N * N high-speed optical switch array is formed by connecting 1 * 2 or 2 * 2 Mach-Zehnder high-speed optical switch units according to a certain topological structure. Wherein the high-speed optical switch unit is composed of a silicon nitride passive waveguide and a thin-film electro-optical crystal / silicon nitride heterogeneous integrated phase shift region. Comprising but not limited to thin-film lithium niobate, thin-film lithium tantalate, barium titanate and lead zirconate titanate is integrated above the silicon nitride phase shifting arm through a micro transfer printing method to form a heterogeneous integrated phase shifting region. The large-scale high-speed optical switch array with excellent performance is realized by combining the characteristics of ultra-low loss, CMOS compatibility, thermal stability and the like of a silicon nitride material, the characteristics of low power consumption, low loss, high-speed modulation and the like of a thin film electro-optical crystal and the advantages of high flexibility, parallel integration, low cost, low loss and the like of a micro transfer printing method.
Owner:SHANGHAI JIAOTONG UNIV

Waveguide type optical switching matrix and photoelectric hybrid switching system

PendingCN119996114AHybrid switching systemsFibre transmissionWaveguideMaterials science
The invention relates to the technical field of photoelectric switching, and particularly discloses a waveguide type optical switching matrix and a photoelectric hybrid switching system. According to the technical scheme, the waveguide type optical switching matrix is provided. The waveguide type optical switching matrix comprises an input optical chip, a middle optical chip and an output optical chip. The input optical chip comprises an N / P single-input 2M-output 1 * 2M optical switch array (M is equal to 2m, N is equal to 2n, and m, n and P are positive integers); the middle optical chip comprises a P * P optical switch array of 2MN / P sheet P input and P output; the output optical chip comprises an N / P sheet 2M input and single output 2M * 1 optical switch array; all the optical switch arrays of the input optical chip, the middle optical chip and the output optical chip are in P rows. Therefore, the whole matrix is strictly free of blocking, and the technical problems that a large-scale monolithic waveguide type optical switch matrix is difficult to produce in batches and use with high reliability and is difficult to maintain and replace are solved.
Owner:SHANGHAI SHIAO COMM EQUIP CO LTD

System-level wavelength-division multiplexed switching for high bandwidth and high-capacity memory access

Electro-optic (“EO”) computing systems for high bandwidth and high-capacity memory access via wavelength-division multiplexed (“WDM”) switching are provided herein. Examples of the EO computing system include one or more compute circuit packages, one or more memory circuit packages, and an optical switch connected between the compute and memory circuit packages.
Owner:XSCAPE PHOTONICS INC