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96 results about "Fiber coupling" patented technology

Silicon optical wafer test equipment and alignment coupling mechanism and test system thereof

The utility model discloses a silicon optical wafer test device and an alignment coupling mechanism and a test system thereof. The alignment coupling mechanism comprises an optical fiber coupling module, a piezoelectric displacement table and a tail end connecting structure which are connected in sequence. The optical fiber coupling module comprises three translation assemblies and three rotating assemblies which are sequentially connected in series; the three translation assemblies are used for driving the tail end connecting structure to do translation motion in the first direction, the second direction and the third direction correspondingly. The three rotating assemblies are used for driving the tail end connecting structure to rotate with the first rotating shaft, the second rotating shaft and the third rotating shaft as the center correspondingly. The first direction, the second direction and the third direction are vertical in pairs; the first rotating shaft, the second rotating shaft and the third rotating shaft are perpendicular pairwise. Each assembly only needs to achieve motion adjustment on one degree of freedom, the function is single, precise control over motion adjustment is facilitated, all the assemblies only need to be sequentially connected in series, spliced and connected, implementation is simple and easy, and equipment cost can be reduced.
Owner:STELIGHT INSTR CO LTD

An integrated fiber optic coupling device and equipment

This application relates to the field of laser technology and provides an integrated fiber coupling device and apparatus. The device includes a beam combining module and a coupling filter module integrated within a housing. The beam combining module polarizes and combines the laser beam, which is then coupled into a fiber combiner via a first fiber and output as a second fiber. The output is then filtered by a cladding filter unit and output through a nozzle. The coupling filter module contains multiple fixed cavities with curved walls. The first fiber at the input end of the fiber combiner and the second fiber at the output end are respectively fixed in curvature by adhering to the corresponding curved walls before output. This device improves beam quality and overall heat dissipation efficiency. The curved wall structure fixes the curvature of the fiber, reducing fiber stress and bending radius, thus solving the problems of excessive bending stress and insecure fiber fixation in existing coupling units, which lead to poor stability and reliability of laser output.
Owner:DOGAIN LASER TECH (SUZHOU) CO LTD +1

Adjustable pulse train laser and design method thereof

The invention provides an adjustable pulse string laser and a design method thereof. The laser comprises a pump light fiber coupling focusing system, an endoscope, a laser crystal, a passive Q-switched crystal, an active Q-switched system and a laser output mirror which are sequentially arranged according to a light path, the adjustable pulse train laser is configured to control the number of pulse trains under the condition of the same dominant frequency or output the same pulse trains under different dominant frequencies through the equivalent length control of the passive Q-switched crystal and the modulation control of the active Q-switched system in a working state. According to the invention, through cooperation of the active Q-switching system and the passive Q-switching crystal, output of a main frequency and a pulse string is obtained in a mode of combination of active Q-switching and passive Q-switching, multi-time processing of the same point in fine processing is facilitated, and single pulse energy is constant, so that a pulse string laser scheme which is lower in cost and more ingenious and uncomplicated in structure is provided; the regulation and control flexibility is good, and the stability and reliability of the laser are higher.
Owner:SUZHOU INNGU LASER

High-power infrared spatial optical fiber coupling device and method

The invention relates to the technical field of laser, and discloses a high-power infrared spatial optical fiber coupling device and method, and the device comprises a light beam stabilizing system, a power adjusting unit, a core coupling light path, and an optical fiber fixing unit. The light beam stabilizing system is used for carrying out pointing stabilization and collimation processing on the incident high-power infrared space light; the power adjusting unit is arranged on the light output side of the light beam stabilizing system, the light input end of the power adjusting unit corresponds to the light output end of the light beam stabilizing system, and the power adjusting unit is used for receiving the stabilized light beam output by the light beam stabilizing system and adjusting the laser power entering the core coupling light path; the core coupling light path is used for accurately focusing the stabilized light beam to the end face of the optical fiber; the optical fiber fixing unit is arranged on the output end side of the core coupling light path and used for stably clamping an optical fiber and enabling the end face of the optical fiber to be located at a focusing light spot; the optical fiber fixing unit is arranged on the light output side of the core coupling light path and used for clamping the optical fiber to be coupled so as to receive the focused light beam output by the core coupling light path.
Owner:CHONGQING COLLEGE OF ELECTRONICS ENG

Thin film barium titanate electro-optical switch unit based on composite electrode and array of thin film barium titanate electro-optical switch unit

The invention discloses a thin-film barium titanate electro-optical switch unit based on a composite electrode and an array thereof. The optical switch unit comprises a first waveguide optical fiber coupling module, a second waveguide optical fiber coupling module, an optical beam splitting module, an electro-optical phase shift region, an optical beam combining module, a third waveguide optical fiber coupling module and a fourth waveguide optical fiber coupling module. Wherein the composite electrode of the electro-optic phase shift region is composed of a metal electrode and a transparent conductive layer, the electrode is closer to the waveguide by utilizing the transparent characteristic of a transparent conductive material, the coupling of a light field and an electric field is effectively enhanced, and the extinction ratio is improved. Meanwhile, a barium titanate film with a high electro-optical coefficient is adopted as a waveguide material, and the performance is further optimized, so that the electro-optical switch unit has the excellent characteristics of low-voltage driving, high extinction ratio, low insertion loss and small size.
Owner:SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI

A high-sensitivity multi-gas real-time monitoring device and method

The application provides a high-sensitivity multi-gas real-time monitoring device and method, which comprises a controller, wherein the controller is connected with a main control circuit; the main control circuit is connected with an indicating laser and a mid-infrared laser array; the indicating laser and the mid-infrared laser array are connected with a multi-pass gas cell through a fiber coupling structure; a photoelectric detector is arranged on the light outlet side of the multi-pass gas cell; and the photoelectric detector is connected with the main control circuit; the controller generates modulation signals with different frequencies to modulate the mid-infrared laser array; the indicating laser emitted by the indicating laser and the mid-infrared laser emitted by the mid-infrared laser array are coupled into a coaxial light beam through the fiber coupling structure and enter the multi-pass gas cell; the photoelectric detector collects signals with target gas information passing through the multi-pass gas cell and simultaneously analyzes the concentrations of multiple target gases through a signal conditioning algorithm. The application has the characteristics of high sensitivity, low detection limit, real-time monitoring, convenient installation, strong anti-interference ability, maintenance-free and wide application range.
Owner:HENAN HANWEI ELECTRONICS

An integrated laser packaging structure suitable for automated mass production

ActiveCN116435864BOptical propagationTemperature control
This invention relates to an integrated laser packaging structure suitable for automated mass production, comprising a packaging box containing an upper cooler, a lower cooler, a laser chip assembly, an optical propagation assembly, an electrical connection assembly, a heat sink, and an optical fiber tail. The lower end face of the upper cooler has an upper coupling groove, and the upper end face of the lower cooler has a lower coupling groove and a first mounting groove, forming a coupling cavity. The heat sink is located within the first mounting groove, and the upper end of the heat sink has a second mounting groove, in which the laser chip assembly is mounted. A mounting assembly is fixedly installed within the coupling cavity. The position of each component within the packaging structure is predetermined, eliminating reliance on semi-automated testing and modulation during assembly, making it suitable for assembly line production. Furthermore, the use of a grooved cooler structure instead of the traditional sheet-like structure of a cooler allows the laser chip assembly and optical propagation assembly to be located within the laser-fiber coupling space formed by the grooves, resulting in better temperature control.
Owner:ZHUYU TECH (HANGZHOU) CO LTD

Fiber-coupled single-photon detector

ActiveCN309673942SPhoton detectorOptics
1. The name of the design product: fiber-coupled single-photon detector. 2. The use of the design product: weak light detection. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.
Owner:SHANGHAI YUANDUHENG OPTOELECTRONIC INSTRUMENT CO LTD

Heavy cutting lengthened narrow right-angle head for C-axis built-in ram

The invention relates to the field of heavy-cutting lengthened narrow right-angle heads, and discloses a heavy-cutting lengthened narrow right-angle head for a C-axis built-in ram, which comprises a spindle box, a spindle, a stand column and an unclamping cylinder assembly, the lower part of the stand column is a rectangular section, the upper part of the stand column is a revolving body, and the stand column is butted with the C-axis ram of a machine tool through an end-toothed disc; the spindle box is transversely arranged on one side of the stand column, and a gear pair composed of a spiral bevel gear shaft and a spiral bevel gear is arranged in the spindle box to drive the spindle. And the whole carbon fiber coupling is accommodated in the central through hole of the upright post. The invention provides a heavy cutting lengthened narrow right-angle head for a C-axis built-in ram, and aims to solve the problems of slow response and much mechanical seal leakage of a long-distance cooling pipeline, improve the safety, introduce low-pressure clean gas in the middle of a piston of an unclamping cylinder, mechanically switch on and switch off along with the unclamping action, be independent of the inner cooling pipeline, and do not occupy a sealing floating end. Working is reliable and the structure is compact.
Owner:安徽卓朴智能装备股份有限公司

A lightweight, automatically focusing LIBS online inspection device and method

ActiveCN119198550BAnalysis by thermal excitationOptical propagationPhotoswitch
The application belongs to the technical field of spectral detection, and particularly relates to a light-weight LIBS online detection device and method with automatic focusing, wherein the device sequentially comprises a photoelectric switch, a pre-detection system, a controller, a delay timer, a pulse laser, a mirror, a zoom unit, an ellipsoidal mirror, a displacement adjustment platform, a transmission window sheet, a fiber coupling unit, a spectrometer and a signal strength detector according to a control logic and an optical propagation path. The application can easily realize zooming through the synchronous movement of the ellipsoidal mirror and the fiber coupling unit driven by the zoom lens and the displacement adjustment platform, can adapt to objects with different heights and shapes, solves the problem of large movement load in the zooming process, realizes light weight, and can judge the focusing range in advance through the telecentric lens imaging pre-detection system, so that the detection analysis efficiency is improved.
Owner:CHANGSHA LUBANG PHOTOELECTRIC TECH CO LTD

Multi KW Class Blue Laser System

The invention may be embodied in other forms than those specifically disclosed herein without departing from itMulti-kW-class blue (400-495 nm) fiber-delivered lasers and module configurations. In embodiments, the lasers propagate laser beams having beam parameter products of <5 mm*mrad, which are used in materials processing, welding and pumping a Raman laser. In an embodiment the laser system is an integration of fiber-coupled modules, which are in turn made up of submodules. An embodiment has sub-modules having a plurality of lensed blue semiconductor gain chips with low reflectivity front facets. These are locked in wavelength with a wavelength spread of <1 nm by using volume Bragg gratings in an external cavity configuration. An embodiment has modules having of a plurality of submodules, which are combined through wavelength multiplexing with a bandwidth of <10 nm, followed by polarization beam combining. The output of each module is fiber-coupled into a low NA fiber. In an embodiment a kW-level blue laser system is realized by fiber bundling and combining multiple modules into a single output fiber.
Owner:BLUE 425 LLC

Fiber-coupled terahertz RF transceiver system having an air dielectric twinax

Systems and methods include a twinaxial waveguide, comprising a sidewall, first and second supports, and first and second conductors. The sidewall has first and second sides, first and second ends, a longitudinal axis extending between the first and second ends, and outer and inner surfaces. The inner surface surrounds a waveguide core extending between the first and second ends. The first support extends between the first and second ends on the first side. The second support extends between the first and second ends on the second side. The first conductor extends along the longitudinal axis between the first and second ends of the sidewall and is supported by the first support. The second conductor extends along the longitudinal axis between the first and second ends of the sidewall and is supported by the second support. The waveguide core extends between the first and second conductors.
Owner:ATTOTUDE INC

Silicon photonics wafer test apparatus and test method therefor, and silicon photonics wafer test system

PCT designated stageWO2026144065A1Silicon photonicsWaveguide
Provided in the present disclosure are a silicon photonics wafer test apparatus and a test method therefor, and a silicon photonics wafer test system. The silicon photonics wafer test apparatus comprises a camera assembly and a deflection optical path assembly; a prober for carrying a silicon photonics wafer; a fiber coupling module; and a driving assembly. When the driving assembly moves the silicon photonics wafer into the imaging field of view of the camera assembly, the camera assembly is adjusted such that the coordinate system is parallel to scribe lines of the silicon photonics wafer; when the driving assembly moves the deflection optical path assembly into the imaging field of view of the camera assembly, the camera assembly captures lateral images of a fiber end from at least two different directions via the deflection optical path assembly. The fiber coupling module is used for adjusting the pose of the fiber end on the basis of the lateral images and the direction of the coordinate system of the camera assembly, enabling initial alignment between the fiber end and the silicon photonics wafer. The present disclosure reduces the operational difficulty of alignment coupling between the fiber end and a silicon photonics waveguide, thereby simplifying the apparatus structure and reducing apparatus costs.
Owner:STELIGHT INSTR CO LTD

High-power low-divergence-angle near-infrared semiconductor laser

The invention discloses a high-power low-divergence-angle near-infrared semiconductor laser, belongs to the technical field of semiconductor lasers, and particularly relates to a high-power low-divergence-angle near-infrared band semiconductor laser. The problems that in the prior art, a low divergence angle and high light beam quality cannot be obtained at the same time under high-power output, and optical catastrophe damage (COD) and reliability reduction are caused by cavity surface heat accumulation are solved. The laser comprises a laser gain area, a conical waveguide area, a segmented waveguide area and a V-shaped groove structure optical fiber coupling area which are sequentially integrated in a monolithic mode in the laser propagation direction. The high-power low-divergence-angle near-infrared semiconductor laser is suitable for application scenes with high requirements on output power, light beam quality and system integration level, such as the fields of fiber laser pumping sources, laser processing, laser radars, space optical communication and the like.
Owner:CHANGCHUN UNIV OF SCI & TECH

Eye safety interlock for fiber coupled high power laser sources

The present application relates to an eye safety interlock for fiber coupled high power laser sources. A system is presented for continuously monitoring the integrity of the delivery fiber coupled to the laser source and shutting down the laser source immediately upon identifying any type of cut, break or disconnection along the delivery fiber. A pair of monitoring photodiodes are included with the laser source and used to observe the ratio of reflected light to emitted light, and if this ratio exceeds a given threshold, the laser is shut down. If there is a break, the power of the reflected light will be higher than normal, where a defined threshold is used to determine the calculated intensity indicative of the break. By using a measurement in decibels, the monitoring system only needs to employ the intensity difference to produce the reflected / delivery ratio output.
Owner:II VI DELAWARE INC

Large-breadth assembly PL test system

The utility model relates to the field of photovoltaic cell panel testing, and discloses a large-breadth assembly PL testing system which comprises a profile frame, two ends of the profile frame are fixedly connected with first linear guide rails, and the top ends of the first linear guide rails are connected with metal plate supporting vertical plates in a front-back sliding mode. A first linear guide rail is fixedly connected to the top end of the metal plate supporting vertical plate, a rectangular groove is formed in the middle of the second linear guide rail, a ruler is fixedly connected to the front end of the second linear guide rail, and the first linear guide rail, the metal plate supporting vertical plate, the second linear guide rail, a Y-axis crank handle and an X-axis lead screw are arranged; the positions of the optical fiber coupling laser and the CCD infrared camera can be adjusted, the operation is simple, and the movable range is not less than 1000 * 1000 mm.
Owner:WUHAN AIJIANG INTELLIGENT TECH CO LTD

Optical-fiber holding component, optical-fiber coupling structure body, optical connector, and optical coupling structure

An optical-fiber holding component according to the present disclosure is disposed inside a ferrule and holds a plurality of optical fibers, the optical-fiber holding component comprising: an outer surface including a first end surface and a second end surface that are arranged in a first direction; a plurality of through-holes that penetrates from the first end surface to the second end surface in the first direction and are arranged side by side in a second direction crossing the first direction; and at least one air discharge hole that extends from the outer surface so as to cross the plurality of through-holes.
Owner:SUMITOMO ELECTRIC INDUSTRIES LTD

Measuring system with relative pose adjusting function and working method thereof

The invention relates to the technical field of measuring instrument metering and testing, in particular to a measuring system with a relative pose adjusting function and a working method of the measuring system. The system comprises a dual-frequency laser and an optical fiber coupling unit which are used for providing a light reference and a voltage reference for a measuring unit; the measuring unit is used for providing measuring light to the sine arm, when relative position deviation exists between the sine arm and the measuring unit, light spots on a four-quadrant detector in the measuring unit deviate from the center position, and relative position deviation information between the sine arm and the measuring unit is output. When relative angle deviation exists between the sine arm and the measuring unit, a light spot on a position sensitive detector in the measuring unit deviates from the central position, and angle deviation information between the sine arm and the measuring unit is output. According to the invention, through the relative pose monitoring system, the micron-level relative position adjustment precision and the arc-second-level relative angle adjustment precision between the sine arm and the measurement system can be realized.
Owner:BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH

Multi-mode cladding pumping resonance space division multiplexing optical fiber amplifier and implementation method thereof

The invention discloses a multimode cladding pumping resonance space division multiplexing optical fiber amplifier and an implementation method thereof, and relates to the technical field of optical fiber amplifiers. The multimode cladding pumping resonance space division multiplexing optical fiber amplifier comprises a transmission optical fiber, an active optical fiber, a multimode pumping optical fiber and a resonant cavity; the active optical fiber is one of a multimode optical fiber, a multi-core optical fiber and a multi-core multimode optical fiber and is used for realizing stimulated radiation amplification of multichannel signal light; the multi-mode pumping optical fiber is coupled with the active optical fiber through a pumping coupling assembly to form a pumping injection path which is used for accessing an external multi-mode pumping source and injecting pumping light into a cladding of the active optical fiber; by constructing a resonant light path for pumping recycling, residual pumping is converted into reusable effective pumping, so that the residual pumping participates in the pumping effect on the active section for multiple times in the system, the equivalent pumping intensity and the accumulative absorption amount of the active section are improved under the condition that the rated power of an external pumping source is not remarkably increased, and the energy consumption of the active section is reduced. The purposes of improving the gain efficiency and reducing the thermal load are achieved.
Owner:JINAN UNIVERSITY

Multi-layer film thickness high-precision measurement system and method based on low-coherence interference

The invention relates to a multi-layer film thickness high-precision measurement system and method based on low-coherence interference. According to the system, a low-coherence broadband light source, an optical fiber coupling module and one end of the forked end of a Y-type multimode optical fiber are sequentially and correspondingly arranged, the common end of the Y-type multimode optical fiber, a collimation module and an all-optical-fiber reflection type coaxial probe are sequentially and correspondingly arranged, the other end of the forked end of the Y-type multimode optical fiber is arranged corresponding to a spectrograph, and the spectrograph is connected with a data processing module; the all-fiber reflection type coaxial probe is used for vertically irradiating a collimated light beam to the surface of a tested multi-layer film structure sample and collecting reflected light of the tested multi-layer film structure sample, and the data processing module is used for carrying out Fourier transform on spectral data of the spectrograph and separating out optical path difference signals of all interfaces; and calculating the thickness information of the thin film in the measured multi-layer thin film structure sample. The structure is simple, the cost is low, rapid measurement can be achieved, the data analysis difficulty is low, and the thickness measurement accuracy and stability are high.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

A molecular simulation method for the electron beam irradiation and heating coupled pre-oxidation process of polyacrylonitrile fibers

This invention provides a molecular simulation method for the pre-oxidation process of polyacrylonitrile fibers coupled with electron beam irradiation and heating, comprising the following steps: establishing a trans-syndiotactic stereotype model of polyacrylonitrile under a specific oxygen environment using computer molecular materials simulation software; inserting a temperature controller and creating a primary collision atom bombardment molecular system during the gradient heating process of polyacrylonitrile pre-oxidation using molecular dynamics methods to simulate the coupling effect of irradiation and heating; continuing the gradient heating to complete the molecular dynamics simulation of pre-oxidation; and outputting the microscopic results of the simulation process. This invention uses molecular dynamics methods to introduce electron beam irradiation during the gradient heating process of polyacrylonitrile to simulate the coupling effect of electron beam irradiation and heating in the pre-oxidation process of polyacrylonitrile. It proposes a set of controllable simulation parameters for the timing of electron beam irradiation introduction during the pre-oxidation process, which has guiding significance for exploring the pre-oxidation reaction mechanism of the coupling effect of electron beam irradiation and heating on polyacrylonitrile fibers.
Owner:TIANJIN POLYTECHNIC UNIV

Infrared optical fiber coupling accessory ATR optical fiber spectrum probe data exchangeable device

The utility model provides an infrared optical fiber coupling accessory ATR optical fiber spectrum probe data exchangeable device which comprises an optical fiber coupler IC card annular card reader unit and an ATR optical fiber spectrum probe, the optical fiber coupler IC card annular card reader unit is provided with a card reading chip and a processor which are in signal connection, and the ATR optical fiber spectrum probe comprises an ATR probe. The ATR probe is respectively connected to the light outlet knob handle and the light inlet screwing handle through the optical fiber main body, the IC card is embedded in the light outlet knob handle, the processor reads information of the IC card through the card reading chip and uploads the information to the stone spectrometer host through the power supply and communication connecting line, and the stone spectrometer host judges whether the ATR probe meets the requirement or not according to data. The data exchangeable device for the ATR optical fiber spectrum probe of the infrared optical fiber coupling accessory solves the problem of matching attribution interactive verification of the ATR optical fiber spectrum probe of the optical fiber coupling accessory and an infrared spectrometer.
Owner:TIANJIN GANGDONG TECH CO LTD

A high-power low-divergence near-infrared semiconductor laser

The utility model relates to a kind of high-power low divergence angle near-infrared semiconductor laser, belong to semiconductor laser technical field, especially to a kind of high-power low divergence angle near-infrared waveband semiconductor laser;Solved the problems of existing technology, such as cannot obtain low divergence angle and high beam quality simultaneously under high-power output, and the optical catastrophe damage (COD) and reliability decline caused by cavity surface heat accumulation;The laser includes laser gain region, taper waveguide region, segmented waveguide region and V-shaped groove structure fiber coupling region integrated in order along the direction of laser propagation.The high-power low divergence angle near-infrared semiconductor laser is suitable for the application scene with higher requirement to output power, beam quality and system integration, such as fiber laser pump source, laser processing, laser radar and space optical communication etc.
Owner:CHANGCHUN UNIV OF SCI & TECH

Optical fiber coupling efficiency improving method based on bat algorithm

The invention discloses an optical fiber coupling efficiency improving method based on a bat algorithm. The method comprises the following steps that optical power data are collected and preprocessed; constructing a coupling parameter search space model; initializing an improved submerged space enhancement-bat algorithm, and outputting an initial coupling parameter vector; introducing countercurrent coding to generate a submerged space vector; calculating and outputting an optimal action vector through a differentiable strategy flow mapping mechanism; obtaining a current iteration optimal bat individual; outputting a coupling parameter vector of the global optimal bat individual; and the improved submerged space enhancement-bat algorithm is recalled to perform parameter optimization calculation, so that the optimization speed and the global optimal stability of optical fiber coupling are effectively improved, the coupling loss is remarkably reduced, and the automatic adjustment precision and the optical power stability of the system are improved.
Owner:SHANDONG UNIV

Device and method for improving optical and mechanical properties of transparent ceramic based on laser annealing

The invention discloses a device and a method for improving optical and mechanical properties of transparent ceramic based on laser annealing. The device comprises a multi-wavelength composite laser, an optical fiber coupling system, an optical adjusting assembly, a sample control platform, a sensing monitoring system and a central controller, the multi-wavelength composite laser comprises an ultraviolet laser and a near-infrared laser; the optical adjusting assembly comprises a concave lens, a filter I, a filter II and an attenuator which are arranged in sequence, and a ceramic sample to be processed is arranged on the five-axis servo system; the central controller is connected with the composite laser, the five-axis servo system and the sensing monitoring system. By introducing the multi-wavelength composite laser annealing technology and the real-time monitoring feedback adjusting system, the optical performance and mechanical strength of the transparent ceramic can be remarkably improved, and the method is particularly suitable for manufacturing high-power laser devices, optical elements and protective materials.
Owner:SUZHOU ZHANGCHI PHOTOELECTRIC TECH CO LTD

Wavelength-adjustable optical light source device and wavelength adjusting method

The invention relates to the technical field of optical light sources, and discloses a wavelength-adjustable optical light source device and a wavelength adjusting method thereof. The device comprises a multi-wavelength monochromatic source array, a grating assembly, a matched optical element and an exit slit or optical fiber coupling output, the device is divided into a reflection type structure and a transmission type structure, the light source array is arranged on a spectrum focal plane according to a spectrum dispersion sequence based on the reverse application logic of a dispersion spectrometer, and the light emitting position is matched with the wavelength distribution of a dispersion system. The monochromatic light sequence switching emission or multi-wavelength combined emission can be controlled through an instruction, and switching is realized only through an electric signal and grating angle adjustment without mechanical motion. The device is compatible with a reflection type grating and a transmission type grating, adapts to ultraviolet to infrared broadband, has the characteristics of simple light path, low energy loss and high stability, and is suitable for scenes such as spectral analysis, optical communication, bioluminescence imaging and the like.
Owner:SHANGHAI YEELING TECHNOLOGY CO LTD

Mold for casting molding of optical fiber coupling intelligent buoyancy material and method for preparing optical fiber coupling intelligent buoyancy material

The invention provides a mold for casting molding of an optical fiber coupling intelligent buoyancy material and a method for preparing the optical fiber coupling intelligent buoyancy material. Through the design of the mold structure and the embedded part structure for casting molding of the optical fiber coupling intelligent buoyancy material, the leading-out mode of the optical fiber grating sensor is optimized, and the problem that the surface of the optical fiber coupling intelligent buoyancy material is difficult to cut and process is effectively solved; and the fiber grating sensor led out from the surface of the buoyancy material can be prevented from being damaged in the process of detaching the buoyancy material from the mold and the cutting process. The surface of the optical fiber coupling intelligent buoyancy material is smooth and crack-free after cutting processing, and the water absorption rate is less than 1.00% after a hydrostatic pressure test at 116MPa for 24h; meanwhile, the fluctuation of central wavelength signals corresponding to the grating of the fiber grating sensor before and after cutting processing is small, and the fiber grating sensor can still transmit internal wavelength change signals after cutting processing.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI

An impact-resistant repair material based on multi-scale fiber coupling technology

PendingCN122145117ACarbon fibersLap joint
The application relates to an anti-impact and anti-abrasion repairing material based on a multi-scale fiber coupling technology and belongs to the technical field of engineering material repairing. The anti-impact and anti-abrasion repairing material is composed of cement gel material, aggregate, a four-element multi-scale fiber reinforcing body, admixture, a modified coupling agent, an additive and water; a four-element multi-scale fiber system of "memory alloy fiber-carbon fiber-polyethylene fiber-whisker" is constructed, the four-element multi-scale fiber system is matched with the self-developed modified coupling agent, the interpenetration and lap joint of different scale and different function fibers are utilized to form a synergistic coupling effect, and the characteristics of the modified coupling agent are synergistically strengthened, so that the comprehensive improvement of the impact resistance, the wear resistance, the toughness and the intelligent repairing adaptability of the material is realized, and the efficient repairing and long-term protection problems of cement-based engineering structures under complex impact and abrasion conditions are solved.
Owner:SOUTH-TO-NORTH WATER DIVERSION EAST ROUTE INTELLIGENT WATER AFFAIRS (BEIJING) CO LTD +2

Optical fiber coupling device and optical module

The invention discloses an optical fiber coupling device, an optical module and an active cable. The optical fiber coupling device comprises an optical assembly which comprises a first block body, a photoelectric conversion accommodating space arranged at the bottom of the front end of the first block body, and a plurality of optical fiber counter bores which are arranged at the rear end of the first block body and extend towards the front end of the first block body, the reflecting surface is arranged on the first block body and is used for implementing light propagation between the optical fiber counter bore and the photoelectric conversion accommodating space; and the jumper comprises a second block body and a plurality of optical fiber through holes which are formed in the second block body and penetrate through the second block body in the front-back direction. When the front end of the jumper is in butt joint with the rear end of the optical assembly, each optical fiber through hole is opposite to the corresponding optical fiber counter bore. The optical fiber coupling device has lower requirements on processing precision and assembling precision, the manufacturing cost is easy to reduce, the overall size is smaller, and the development requirements of miniaturization and high-density integration of an optical module are easy to meet.
Owner:EVERPRO TECH COMPANY

End pump and side pump combined signal pump beam combiner

The utility model discloses an end-pump and side-pump combined signal pumping beam combiner, which belongs to the technical field of fiber lasers and comprises a signal fiber and a plurality of pumping fibers, the plurality of pumping fibers are coupled into the pumping fiber in a fused biconical taper mode to form a coupled pumping fiber, and the coupled pumping fiber is coupled with the signal fiber. The end portions of the coupling pumping optical fibers are fused into the signal optical fiber in a side pumping mode, and the number of the coupling pumping optical fibers with the end portions fused into the signal optical fiber in the side pumping mode is at least two. According to the end pump and side pump combined signal pumping beam combiner provided by the utility model, a mode of combining end face pumping and side face pumping is adopted, the number of pumping arms of the signal pumping beam combiner is increased, the upper limit of the coupling pumping power of a single beam combiner is improved, and the novel structure can solve the problem that the pumping arms of the side face pumping beam combiner are insufficient.
Owner:BEIJING ORIENTAL SHARP LASER TECH