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32results about How to "Improve mode conversion efficiency" patented technology
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Mode multiplexing demultiplexer based on silicon-based optical waveguide mode matching
ActiveCN106249355ALarge transmission capacitySimple structureOptical light guidesMultiplexingCoupling
The invention provides a mode multiplexing demultiplexer based on silicon-based optical waveguide mode matching. When the mode multiplexing demultiplexer is used as a multiplexer, the mode multiplexing demultiplexer comprises n strip-shaped waveguides different in width and adopted as input optical waveguides, wherein the 0-th input optical waveguide (10) is a single-mode optical waveguide and the tail end of the single-mode optical waveguide is sequentially connected with a conical optical waveguide (20), a multi-mode optical waveguide (30) and a multiplexer output end (40). The tail end of the n-th input optical waveguide (1n) is sequentially connected with an S-shaped curved optical waveguide structure (2n), a coupling region optical waveguide (3n), a second S-shaped curved optical waveguide structure (4n), a small-section straight waveguide (5n) and a conical waveguide (6n). When the mode multiplexing demultiplexer is used as a demultiplexer, the output end and the input end of the multiplexer are exchanged with each other according to the reversibility of the optical path. Therefore, the mode demultiplexing can be realized. In this way, the mode multiplexing demultiplexer becomes a demultiplexer. The mode multiplexing demultiplexer is simple in structure and high in mode conversion efficiency, which enables the multiplexing and the demultiplexing of the TE mode and the TM mode.
Owner:BEIJING JIAOTONG UNIV
Blended crossing device for silicon-based nanowire
InactiveCN103513333AReduce widthImprove transmission efficiencyOptical light guidesNanowireWaveguide mode
The invention discloses a blended crossing device for a silicon-based nanowire. The crossing device comprises two groove waveguide mode switching units, two slab waveguide mode switching units, a sine switching waveguide and a crossing multimode waveguide, wherein the two groove waveguide mode switching units and the two slab waveguide mode switching units are respectively connected through the sine switching waveguide and the crossing multimode waveguide, each groove waveguide mode switching unit is opposite to one slab waveguide mode switching unit, each groove waveguide mode switching unit comprises a groove waveguide for inputting an optical signal and a mode switcher, each mode switcher is connected between each groove waveguide and the sine switching waveguide, each slab waveguide mode switching unit comprises a slab waveguide and a single-mode waveguide for outputting the optical signal, and each single-mode waveguide is connected between each slab waveguide and the sine switching waveguide. The crossing device has the advantages of high transmission efficiency, compact structure, low loss, low manufacturing difficulty, relatively low cost and the like.
Owner:SOUTHEAST UNIV
Mode exciter from rectangular waveguide TE<10> mode to round waveguide TE<21> mode and design method
ActiveCN107425237AImprove mode conversion efficiencySimple structureWaveguide type devicesRoad surfaceLength wave
The invention relates to a mode exciter from a rectangular waveguide TE<10> mode to a round waveguide TE<21> mode and a design method. The work wavelength of the mode exciter is Lambda, and comprises rectangular waveguide and round waveguide; the rectangular waveguide comprises an input port and an output port; the round waveguide comprises a short circuit surface and an output port; the output port end of the rectangular waveguide is tipsily embedded into the round waveguide in a position with the distance being 1 / 4 work wavelength away from the short circuit surface, so that electromagnetic waves are transmitted to the output port of the round waveguide from the input port of the rectangular waveguide; the mode excitation on the round waveguide can be realized; the narrow edge of the rectangular waveguide is vertical to the axial line of the round waveguide; the center line of the rectangular waveguide and the axial line of the round waveguide form an included angle being theta; the length of the rectangular waveguide is 1 to 2 times of the work wavelength; and the length of the round waveguide is 5 to 7 times of the work wavelength. The mode exciter provided by the invention has the advantages that the structure is simple; and the work frequency band and the mode conversion efficiency can meet the requirement of the propagation characteristic measurement of the TE<21> mode in a gyro traveling wave tube high-frequency system.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Integration of continuous self-aligning semiconductor photoelectronic device and mode spot converter
InactiveCN1437289AAvoid strainInhibition thicknessLaser detailsSemiconductor/solid-state device manufacturingHeterojunctionIndium
The integration process of continuous self-aligning semiconductor photoelectronic device and mode spot converting includes the following steps: growing on substrate buffering InP layer, lower waveguide limiting InGaAsP layer, isolating InP layer, active area structure, thin upper limiting InGaAsP layer and protecting InP layer through organic chemical vapor deposition process, etching to form partial mode spot converter; growoing SiO2 through plasma vapor deposition process; photoetching active area and mode spot converter area; growing InGaAsP layer, P doped covering InP layer and protectingInGaAsP layer through selective metal organic vapor chemical deposition process, growing SiO2, photoetching mask heterojunction bar structure; growing p-n-p type InP current barrier layer through metal organic vapor chemical deposition process.
Owner:INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
Mode converter from rectangular waveguide TE10 mode to circular waveguide TE02 mode
InactiveCN110931920AHigh purityImprove mode conversion efficiencyWaveguide type devicesMicrowaveSoftware engineering
The invention discloses a broadband mode converter from a rectangular waveguide TE10 mode to a circular waveguide TE02 mode, and belongs to the technical field of microwave and millimeter wave devices. The design route adopted by the invention is the standard rectangular waveguide TE10 mode, a rectangular waveguide TE20 mode, a rectangular waveguide TE40 mode, a cross-shaped waveguide TE44 mode, across-shaped fan-shaped waveguide TE44 mode and the circular waveguide TE02 mode. According to the broadband mode converter from the rectangular waveguide TE10 mode to the circular waveguide TE02 mode, by changing the external shape of a waveguide, the boundary condition when an electromagnetic wave is propagated in the waveguide is changed, and the broadband mode conversion from the rectangularwaveguide TE10 mode of a linear gradient structure to the circular waveguide TE02 mode is realized by means of a transfer mode scheme. According to the mode converter, the problems of low mode conversion efficiency and narrower bandwidth are effectively solved, and each mode conversion section is of a linear gradient structure, so that the mode converter is simple in structure and high in practicability, and is convenient to process.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Game mode and 3D mode switching device and method, and smart TV
ActiveCN103716711AEasy to operateImprove mode conversion efficiencySelective content distributionMode transformationParameter control
The invention provides a game mode and 3D mode switching device and method, and a smart TV. The method includes the steps that a mode switching instruction is received, wherein the mode switching instruction comprises mode switching information; the mode switching information is analyzed, wherein an initial mode and a target mode in the mode switching information are acquired, and whether the initial mode is a game mode or not and whether the target mode is a 3D mode or not are judged; when the initial mode is the game mode and the target mode is the 3D mode, a first conversion parameter corresponding to the game mode is switched into a second conversion parameter corresponding to a video mode according to the mode switching information; the second conversion parameter is switched into a third conversion parameter corresponding to the 3D mode, and the third conversion parameter is sent to a display module; the smart TV is controlled to switch modes according to the third conversion parameter. The game mode in the smart TV can be switched into the 3D mode through one operation, and therefore operating steps are simplified, and the mode conversion efficiency is improved.
Owner:LE SHI ZHI ZIN ELECTRONIC TECHNOLOGY (TIANJIN) LTD
All-fiber mode conversion device and method and detection device
PendingCN112305673AImprove efficiencyHigh pattern purityOptical mode multiplex systemsCoupling light guidesConvertersLong-period fiber grating
The invention discloses an all-fiber mode conversion device and method and a detection device. The conversion device comprises a first polarization controller, a mode converter and a second polarization controller, wherein the output end of the first polarization controller is connected with the input end of the mode converter through an optical fiber, the output end of the mode converter is connected with the input end of the second polarization controller through an optical fiber, and the first polarization controller is used for adjusting a light beam to be circularly polarized light or linearly polarized light. The mode converter realizes mode conversion by using a long-period fiber bragg grating inscribed on a few-mode fiber by carbon dioxide laser, and the second polarization controller is used for adjusting the phase difference between vector HE odd-even modes or EH odd-even modes so as to generate an orbital angular momentum mode. By adopting the device and the method providedby the invention, mode conversion with wide bandwidth, high purity mode and high conversion efficiency can be realized, and the device and the method have wide application value in a mode division multiplexing optical fiber communication system.
Owner:SHANGHAI UNIV
Optical fiber type broadband optical vortex converter
ActiveCN108089267AImprove performance parametersImprove mode conversion efficiencyCoupling light guidesNon symmetricPolarizer
The invention discloses an optical fiber type broadband optical vortex converter. The converter comprises a single-mode optical fiber, a polarization controller acting on the single-mode optical fiber, a multimode optical fiber, a polarization controller acting on the multimode optical fiber, and a polarizer which is arranged at the output end of the multimode optical fiber; the output end of thesingle-mode optical fiber and the input end of the multimode optical fiber are in asymmetrical connection with each other, so that an optical vortex mode can be excited; the order of the optical vortex mode can be flexibly regulated by controlling the polarization controllers; and the working states of the polarization controllers and the polarizer can be jointly adjusted, so that remaining non-optical vortex components can be filtered out, and therefore, the purity of the optical vortex mode can be improved. The converter does not have a bandwidth-limiting structure, so that the working bandwidth of the converter is large. The optical fiber type broadband optical vortex converter of the invention can be realized by using asymmetrical welding and asymmetrical pasting, and therefore, the processing process of the converter is simple. Compared with a conventional vortex converter device, the optical fiber type broadband optical vortex converter of the invention has the advantages of significantly reduced processing difficulty, significantly reduced cost, improved working bandwidth and wide application prospect.
Owner:HUAZHONG UNIV OF SCI & TECH
Rectangular-waveguide TM11-mode microwave high-power ribbon electron beam collector
ActiveCN104064421AEfficient collectionSimple structureTransit-tube collectorsElectrical conductorMicrowave
The invention discloses a rectangular-waveguide TM11-mode microwave high-power ribbon electron beam collector, aiming to provide an electron beam collector capable of recovering a ribbon electron beam with high efficiency and good cooling performance while conducting high-efficiency transmission of a rectangular-waveguide TM11-mode microwave. The collector comprises a rectangular waveguide, an inner conductor, and two flanges. The inner conductor is a cuboid metal block fixed in the middle of a narrow edge of the rectangular waveguide and comprises cuboid water through channels inside for cooling. The flanges fixed on the outer side of the narrow edge of the rectangular waveguide communicate with the water through channels inside the inner conductor and are used for connection between the collector and an outer water tank. The collector can collect a ribbon electron beam with good cooling performance while conducting high-efficiency transmission of a rectangular-waveguide TM11-mode microwave. The collector is simple and compact in structure, low in cost, high in transmission efficiency, and wide in transmission band.
Owner:NAT UNIV OF DEFENSE TECH
Rectangular waveguide radial power combiner
ActiveCN110048204ALow insertion lossImprove mode conversion efficiencyCoupling devicesPower combinerCoupling
The invention discloses a rectangular waveguide radial power combiner. The rectangular waveguide radial power combiner has a broad frequency band, high efficiency and high power capacity. According tothe technical scheme, a mode converter is communicated with a power combination cavity in a disk through an S-tube double-bend circular waveguide in an S-shaped double-bend tube form from a waveguideport (4) at the bottom fixed end of the S-tube double-bend circular waveguide, and the free end of the S-tube double-bend circular waveguide is fixedly connected with a square window waveguide cavityof a cone-shaped waveguide; rectangular waveguide input ports are formed in a hollow platform of the disk, wherein the rectangular waveguide input ports are equally divided according to a circumferential angle, point to the power combination cavity and are radially distributed in an equal circular array around a center matching circular table; the mode converter converts a main TE<10> mode in a rectangular waveguide into a TM<01> mode in the S-tube double-bend circular waveguide, wherein an electric field has radial rotating characteristics in the TM01 mode; and through coupling of a main TE<10> mode in the power combination cavity and a main TE<10> mode in each radially-distributed rectangular waveguide input port channel, equiamplitude in-phase synthesis of all the input ports is completed finally.
Owner:10TH RES INST OF CETC
High-power TM11-TE10 microwave mode converter
The invention discloses a high-power microwave rectangular waveguide TM11-TE10 mode converter. The purpose is to provide a mode converter for directly converting rectangular waveguide TM11 mode microwave into rectangular waveguide TE10 mode microwave. The high-power TM11-TE10 microwave mode converter is composed of rectangular waveguide, a separation inserting plate, N phase shift inserting plates and N compensation inserting plates. The separating inserting plate is a metal plate with a wedge structure, and is fixed at the vertical middle position of the short side of the rectangular waveguide along the axial direction in an inserting slot manner and parallel to the long side of the rectangular waveguide; the phase shift inserting plates are vertical to the long side of the rectangular waveguide and uniformly fixed to the upper surface of the separating inserting plate, and the compensation inserting plates are vertical to the long side of the rectangular waveguide and uniformly fixed to the lower surface of the separating inserting plate. According to the high-power TM11-TE10 microwave mode converter, mode conversion can be achieved, no rectangular-circular transformation and other transition structures are arranged, structure is simple, processing cost is low, structure is compact, conversion efficiency is high and transmission band is wide.
Owner:NAT UNIV OF DEFENSE TECH
Turnstile type phase shifter
ActiveCN106025453AImprove mode conversion efficiencyIncreased power capacityWaveguide type devicesResonant cavityPhase shifted
The invention discloses a turnstile type phase shifter, and aims to provide a turnstile type phase shifter with a compact structure, a fast phase shifting speed, high precision and a large power capacity. The phase shifter comprises an arc diaphragm loaded circular polarizer and cross-shaped waveguide wire circular polarizer. The resonant cavity of the arc diaphragm loaded circular polarizer is aligned with the first circular waveguide of the cross-shaped waveguide wire circular polarizer. The arc diaphragm loaded circular polarizer consists of a coaxial waveguide, the resonant cavity, a balun structure, and metal diaphragms. The cross-shaped waveguide wire circular polarizer consists of a cross-shaped rectangular waveguide, a first circular waveguide, a second circular waveguide, a metal cylinder, and a metal hemisphere. The cross-shaped waveguide wire circular polarizer is a fixed one that does not move while the arc diaphragm loaded circular polarizer can rotate to its axis at any given angle that represents the phase shift of a TE10 mode. With the phase shifter of the invention, it is possible to achieve high mode conversion efficiency; with a compact structure, a good phase-shifting effect can be achieved at a high speed for the phase adjustment of a TE10 mode at will.
Owner:NAT UNIV OF DEFENSE TECH
Universal silicon-based integrated optical waveguide mode converter
ActiveCN111766662AImprove versatilityIncrease flexibilityOptical waveguide light guideConvertersEngineering
The invention belongs to the technical field of communication modes, and discloses a universal silicon-based integrated optical waveguide mode converter. The converter. includes an input waveguide, the input waveguide is connected with an input mode conversion module, the input mode conversion module is connected with one end of a middle connecting waveguide, the other end of the intermediate connection waveguide is connected with an output mode conversion module, the output module conversion module is connected with an output waveguide, the input waveguide is used for transmitting input lightwaves, the input mode conversion module is used for converting the mode of the input light waves into a fundamental mode, the intermediate connection waveguide is used for transmitting the light waves in the fundamental mode, the output mode conversion module is used for converting the light waves in the fundamental mode into a mode required by output light waves, and the output waveguide is usedfor transmitting the output light waves. The converter provided by the invention can realize conversion between any same polarization light field mode, and has better universality, flexibility and programming reconstruction capability.
Owner:SHANGHAI JIAO TONG UNIV
Liquid helium conveying system used for large-size multi-section liquid helium heat sinks and class converting method for large-size multi-section liquid helium heat sinks
InactiveCN103343884AAvoid trial failureAvoid the hassle of frequent Dewar replacementsAerodynamic testingPipeline systemsLiquid nitrogen coolingNitrogen
The invention provides a liquid helium conveying system used for large-size multi-section liquid helium heat sinks and a class converting method for converting liquid nitrogen to liquid helium of the liquid helium heat sinks on the basis of the liquid helium conveying system. The liquid helium conveying system and the method are applied to an engine vacuum plume experimental study. The liquid helium conveying system comprises a heat sink system, a liquid nitrogen supplying system, a liquid helium supplying system, a nitrogen supplying system and a helium supplying system. The heat sink system comprises five large-size liquid helium heat sinks and four liquid nitrogen heat sinks. The liquid nitrogen supplying system is provided with conveying pipelines for the liquid helium heat sinks and the liquid nitrogen heat sinks, and provided with a liquid nitrogen cooling box and a liquid helium cooling box, wherein the liquid nitrogen cooling box and the liquid helium cooling box are used for centrally containing and managing liquid nitrogen adjusting valves and liquid helium adjusting valves. According to the liquid helium conveying system used for the large-size multi-section liquid helium heat sinks and the class converting method for the large-size multi-section liquid helium heat sinks, liquid helium refrigeration can be provided for the large-size multi-section liquid helium heat sinks at the same time, unified liquid supplying is achieved for all the heat sinks, operation is convenient, cost is saved, floor space is small, the valves can be centrally controlled conveniently, working efficiency is improved, and operation and maintenance are convenient.
Owner:BEIHANG UNIV
TM0-TE1 optical mode converter based on double-layer curve edge waveguide structure and optical device
ActiveCN114755757AImprove mode conversion efficiencyGuaranteed smoothnessOptical waveguide light guideTransverse magneticWaveguide
The invention provides a TM0-TE1 optical mode converter based on a double-layer curve edge waveguide structure and an optical device, the mode converter is provided with a double-layer waveguide structure, each layer of waveguide comprises a plurality of key nodes of which the positions can be optimized, and the specific shape of the waveguide edge is determined through a quadratic or cubic spline interpolation method. The mode converter can convert a transverse magnetic fundamental mode, namely a TM0 mode, of an input waveguide into a first-order transverse electric mode, namely a TE1 mode, and meanwhile, the input transverse electric fundamental mode, namely the TE0 mode, is not changed. Compared with a traditional TM0-TE1 mode converter based on a double-layer linear gradient waveguide structure, the TM0-TE1 mode converter has the advantages that higher mode conversion efficiency can be obtained by optimizing denser key node parameters in a more compact size, meanwhile, the smoothness of the edge of the waveguide can be strictly guaranteed, and it is guaranteed that the technology can be used for preparing the TM0-TE1 mode converter.
Owner:ZHEJIANG LAB
A High-Power Millimeter-Wave Broadband Mode Converter Based on Continuous Grating Structure
InactiveCN105529538BMeet output requirementsImprove mode conversion efficiencyCoupling devicesAntennasGratingWaveguide
The invention discloses a high-power millimeter-wave broadband mode converter based on a continuous grating structure, which belongs to the field of microwave transmission of vacuum components. The mode converter includes a circular waveguide radiator, a matching mirror, a polarization grating mirror and a phase correction system. The TE0,1 mold emitted from the circular waveguide radiator into space has a curved wavefront, which is converted into a quasi-planar electromagnetic wave with a suitable beam size after passing through a parabolic mirror. The continuous variable period grating mirror placed behind the ellipsoidal mirror converts quasi-plane waves with no fixed polarization direction and symmetrical field strength distribution into linearly polarized waves with a single polarization direction and strong field strength distribution in the middle and weak at both ends. Finally, the beam spot size and phase of the obtained linearly polarized wave are adjusted and corrected by the phase correction system to generate a TEM00 mode (Gaussian beam) with a specific beam spot size, and complete the conversion of the circular waveguide TE0,1‑TEM00 mode. The invention has the advantages of wide frequency band, high power capacity, compact structure and the like.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Autonomic multi-mode management method
InactiveCN101937341BImprove mode conversion efficiencyImprove environmental adaptabilitySpecific program execution arrangementsDecision modelGranularity
The invention discloses an autonomic multi-mode management method, which comprises the following steps of: constructing a five-tuple representation mode comprising mode basic information, sub-mode information, target mode information, a mode trigger and a mode decider; deciding the mode ID of the current system operation by adopting a trigger mechanism; and finally, calculating the QoS level of each task group in the mode by adopting a two-stage multi-granularity decision model, and adjusting task scheduling parameters to complete task scheduling. The method improves the mode conversion efficiency of the system and enhances the environmental adaptability of the system.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
A Silicon-Based Nanowire Hybrid Crossover Device
InactiveCN103513333BReduce widthImprove transmission efficiencyOptical light guidesNanowireSingle mode waveguides
Owner:SOUTHEAST UNIV
A compact rectangular te 10 -Circular waveguide tm 01 Mode conversion device
ActiveCN108039541BSmall insertion lossImprove mode conversion efficiencyWaveguide type devicesCoaxial waveguidesEngineering
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
A general-purpose silicon-based integrated optical waveguide mode converter
ActiveCN111766662BImprove versatilityIncrease flexibilityOptical waveguide light guideConvertersEngineering
Owner:SHANGHAI JIAOTONG UNIV
Mode controller from multi-core optical fiber to annular core optical fiber
PendingCN113866869ASimple structureReduce the impactCoupling light guidesMulticore optical fibrePhase modulationMaterials science
The invention provides a mode controller from a multi-core optical fiber to an annular core optical fiber. The mode controller is composed of a multi-core optical fiber, a mode field conversion area, an annular core optical fiber and a phase modulation module, the multi-core optical fiber and the annular core optical fiber are connected through the mode field conversion area, and after transmission light passes through the phase modulation module to form a stable phase difference, the transmission light transmits in the multi-core optical fiber and is coupled to the annular core optical fiber through the mode field conversion area, so that a high-order mode of the annular core optical fiber can be excited, and different modes can be excited through different phase differences.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Integration of continuous self-aligning semiconductor photoelectronic device and mode spot converter
InactiveCN1238937CAvoid strainInhibition thicknessLaser detailsSemiconductor/solid-state device manufacturingHeterojunctionIndium
The integration process of continuous self-aligning semiconductor photoelectronic device and mode spot converting includes the following steps: growing on substrate buffering InP layer, lower waveguide limiting InGaAsP layer, isolating InP layer, active area structure, thin upper limiting InGaAsP layer and protecting InP layer through organic chemical vapor deposition process, etching to form partial mode spot converter; growoing SiO2 through plasma vapor deposition process; photoetching active area and mode spot converter area; growing InGaAsP layer, P doped covering InP layer and protecting InGaAsP layer through selective metal organic vapor chemical deposition process, growing SiO2, photoetching mask heterojunction bar structure; growing p-n-p type InP current barrier layer through metal organic vapor chemical deposition process.
Owner:INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
A rectangular te based on h-t joint power division network 10 mode - circular waveguide te 21 Mode Converter
ActiveCN110380160BImprove mode conversion efficiencyEasy to integrateWaveguide type devicesWaveguide modeElectrical performance
Owner:SHENZHEN UNIV
Liquid helium conveying system used for large-size multi-section liquid helium heat sinks and class converting method for large-size multi-section liquid helium heat sinks
InactiveCN103343884BAvoid trial failureAvoid the hassle of frequent Dewar replacementsAerodynamic testingPipeline systemsLiquid nitrogen coolingEngineering
Owner:BEIHANG UNIV
Rectangular Waveguide tm11 Mode Microwave High Power Ribbon Electron Beam Collector
ActiveCN104064421BEfficient collectionSimple structureTransit-tube collectorsMicrowaveElectrical conductor
The invention discloses a rectangular-waveguide TM11-mode microwave high-power ribbon electron beam collector, aiming to provide an electron beam collector capable of recovering a ribbon electron beam with high efficiency and good cooling performance while conducting high-efficiency transmission of a rectangular-waveguide TM11-mode microwave. The collector comprises a rectangular waveguide, an inner conductor, and two flanges. The inner conductor is a cuboid metal block fixed in the middle of a narrow edge of the rectangular waveguide and comprises cuboid water through channels inside for cooling. The flanges fixed on the outer side of the narrow edge of the rectangular waveguide communicate with the water through channels inside the inner conductor and are used for connection between the collector and an outer water tank. The collector can collect a ribbon electron beam with good cooling performance while conducting high-efficiency transmission of a rectangular-waveguide TM11-mode microwave. The collector is simple and compact in structure, low in cost, high in transmission efficiency, and wide in transmission band.
Owner:NAT UNIV OF DEFENSE TECH
A polymer triple-mode multiplexer based on cascaded tapered couplers
ActiveCN113311537BImprove working characteristicsImprove mode conversion efficiencyCoupling light guidesOptical waveguide light guideMultiplexerSoftware engineering
The present invention proposes a polymer three-mode multiplexer based on cascaded tapered couplers, which includes input straight waveguides, few-mode tapered waveguides, single-mode tapered waveguides, S-shaped curved waveguides and output straight waveguides, S-shaped The curved waveguide is used to approach and separate the waveguides. When the fundamental mode is input from the three input straight waveguides and passes through the single-mode tapered waveguide along the S-shaped curved waveguide, the modes evolve through the few-mode tapered waveguide and the single-mode tapered waveguide, respectively. The second-order mode, the fundamental mode and the third-order mode are transmitted in the few-mode tapered waveguide to realize the multiplexing of the three modes. The multiplexer has the advantages of high mode conversion efficiency, low extra loss and large bandwidth, and is expected to be applied to the mode division multiplexing system in board-level optical interconnection.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Rectangular TE10 mode to round waveguide TE21 mode converter based on H-T joint power division network
ActiveCN110380160AImprove mode conversion efficiencyEasy to integrateWaveguide type devicesElectricityMain branch
The invention provides a rectangular TE10 mode to round waveguide TE21 mode converter based on the H-T joint power division network. The mode conversion process is from a rectangular TE10 mode to a rectangular TE20 mode to a circular waveguide TE21 mode. The converter is characterized by comprising an input port, a main branch rectangular waveguide, an H-T joint, three matching steps, two sub branch rectangular waveguides, an over-mode rectangular waveguide, a rectangular-circular waveguide mode converter, an output circular waveguide and an output port. The converter is advantaged in that theproposed TE20-TE21 mode converter has excellent electrical performance and has high mode conversion efficiency (95%) over a wide frequency range. Due to utilizing the H-T power division network, an input port is coaxial with the center of an output port, integration of two-dimensional planar processing and its application systems is facilitated, and the TE20-TE21 mode converter proposed by the invention has excellent electrical performance and structural performance and can be used for cold chamber testing of the high frequency structure of a whirling traveling wave tube.
Owner:SHENZHEN UNIV
Rectangular Waveguide Radial Power Combiner
ActiveCN110048204BLow insertion lossImprove mode conversion efficiencyCoupling devicesCircular discConverters
Owner:10TH RES INST OF CETC
A rectangular waveguide te 10 mode to circular waveguide te 21 mode exciter
ActiveCN107425237BImprove mode conversion efficiencySimple structureWaveguide type devicesEngineeringRoad surface
The invention relates to a rectangular waveguide TE 10 Mode to Circular Waveguide TE 21 The mode exciter and design method of the mode, the operating wavelength of the mode exciter is λ, including a rectangular waveguide and a circular waveguide; the rectangular waveguide includes an input port and an output port; the circular waveguide includes a short-circuit surface and an output port, and the output port end of the rectangular waveguide is inclined Embedded in the circular waveguide, and 1 / 4 of the working wavelength away from the short-circuit surface, so that the electromagnetic wave is transmitted from the input port of the rectangular waveguide to the output port of the circular waveguide, so as to realize the mode excitation of the circular waveguide; the narrow side of the rectangular waveguide Perpendicular to the axis of the circular waveguide, the angle between the center line of the rectangular waveguide and the axis of the circular waveguide is θ; the length of the rectangular waveguide is 1-2 times the working wavelength, and the length of the circular waveguide is 5-7 times the working wavelength times. The mode exciter of the present invention has a simple structure, and the working frequency band and mode conversion efficiency can meet the requirements for the TE 21 The demand for the measurement of the propagation characteristics of the mode.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
A game mode and 3D mode switching device, method and smart TV
ActiveCN103716711BEasy to operateImprove mode conversion efficiencySelective content distributionComputer moduleComputer science
The invention provides a game mode and 3D mode switching device and method, and a smart TV. The method includes the steps that a mode switching instruction is received, wherein the mode switching instruction comprises mode switching information; the mode switching information is analyzed, wherein an initial mode and a target mode in the mode switching information are acquired, and whether the initial mode is a game mode or not and whether the target mode is a 3D mode or not are judged; when the initial mode is the game mode and the target mode is the 3D mode, a first conversion parameter corresponding to the game mode is switched into a second conversion parameter corresponding to a video mode according to the mode switching information; the second conversion parameter is switched into a third conversion parameter corresponding to the 3D mode, and the third conversion parameter is sent to a display module; the smart TV is controlled to switch modes according to the third conversion parameter. The game mode in the smart TV can be switched into the 3D mode through one operation, and therefore operating steps are simplified, and the mode conversion efficiency is improved.
Owner:LE SHI ZHI ZIN ELECTRONIC TECHNOLOGY (TIANJIN) LTD
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