164 results about "Transverse magnetic" patented technology

The invention provides an optical chip, an optical chip manufacturing method, an optical signal transmission method and an optical module.The optical chip comprises an optical port coupled with an optical fiber and used for receiving a first optical signal from the optical fiber, and the first optical signal comprises a component in a transverse magnetic (TM) mode; the PSR is used for performing first processing on the first optical signal to generate a second optical signal, the second optical signal is in a transverse electric TE mode, and the second optical signal is a single-channel multi-wavelength optical signal; the at least one wavelength demultiplexer DeMux is used for performing second processing on the second optical signal to generate a third optical signal, and the third optical signal is a multi-channel single-wavelength optical signal; the photoelectric detector array is used for converting the third optical signal into an electric signal; wherein the optical port, the PSR, and the at least one DeMux are made of silicon nitride SiN.

The invention discloses an integrated optical diversity receiving device, solves the problem of high power consumption when the influence caused by phase distortion and light beam pointing error is corrected in the existing free space optical communication, and belongs to the field of optical communication. The method comprises the steps that free space light focused by a lens is received by a multimode / few-mode optical fiber; the multi-mode light beams received by the multimode / few-mode optical fiber enter the photon lantern; the photon lantern is coupled to the single-mode fiber array after mode demultiplexing; each light beam in the single-mode fiber array enters a polarization beam splitting rotary combiner through an edge coupler; the polarization beam splitting rotation combiner performs transverse electric wave (TE) and transverse magnetic wave (TM) mode separation on the entered light beam, then rotates the separated TM polarization state light to a TE polarization state, combines the rotated TE polarization state light and the separated TE polarization state light, and then enters the MZI network; the MZI network is used for realizing optical coherent beam combination; a control circuit controls the merging of the light beams in the MZI network.

Magnetic saturation detectors for power converters are presented herein. An energy transfer element has an input power winding wrapped around a center post. Single or multiple transverse windings are positioned perpendicular to the input power winding and coupled to receive a transverse current that provides a transverse magnetic flux density within the energy transfer element. The transverse magnetic flux density produces a transverse voltage waveform. A voltage detection circuit is configured to receive the transverse voltage waveform and detect a change in the sign of the slope of the transverse voltage waveform. The change in the sign of the slope indicates magnetic saturation. The voltage detection circuit is configured to detect an occurrence of an extremum in the transverse voltage waveform. The extremum indicates the change in the sign of the slope.

The invention relates to a transverse magnetic circuit module complementary magnetic flux reverse motor, comprising: a stator assembly comprising a plurality of U-shaped stator cores arranged circumferentially, a front module permanent magnet, a rear module permanent magnet, a front module armature winding and a rear module armature winding; and the rotor assembly comprises a front rotor module and a rear rotor module which are axially distributed and have the same structure, rotor salient pole teeth are respectively arranged on the inner side surfaces of the front rotor module and the rear rotor module along the circumferential direction, and the rotor salient pole teeth on the front rotor module and the rotor salient pole teeth on the rear rotor module are arranged in a staggered manner along the circumferential angle. The electromagnetic torque density is remarkably improved through magnetic circuit topology optimization, more excellent power output characteristics are achieved, meanwhile, armature winding turn chain magnetic flux directions of the front module and the rear module are opposite, the phase difference is 180 deg electrical angle, magnetic linkages of the two modules are complementary, even harmonics of the magnetic linkages are counteracted after synthesis, in addition, the unique stator structure improves the air gap magnetic density of the motor, and the motor efficiency is improved. And the motor power density is improved, and the application and popularization value is extremely high.

The invention discloses a space angle measuring device based on a tilted fiber grating-surface plasma resonance sensor, which belongs to the technical field of optical fiber sensing and comprises a broadband light source, a polarizer, a polarization controller, a sensor, a spectrometer and a computer. The broadband light source, the polarizer, the polarization controller, the sensor and the spectrograph are sequentially connected through single-mode optical fibers, and the other end of the spectrograph is connected with the computer through a data line; after passing through the polarizer and the polarization controller, light emitted from the broadband light source is changed into transverse magnetic waves from full polarization waves and then enters the sensor to perceive space angle changes, the spectrograph receives optical signals, and finally the computer demodulates the direction and the size of a bending angle. According to the space angle measuring device based on the tilted fiber grating-surface plasma resonance sensor, the bending direction and the bending angle of the sensor can be detected at the same time, and the sensitivity and the precision are high.

The invention relates to the technical field of optical waveguides, and particularly provides a polarization-independent prism coupling method and a waveguide structure, an optical anisotropic material is introduced into a substrate layer, a core layer and / or a cladding in a prism coupling waveguide, and a transverse electric mode and a transverse magnetic mode in the waveguide have the same effective refractive index by adjusting the refractive index distribution of the optical anisotropic material, so that the polarization-independent prism coupling method is realized. Different polarization states in the same light beam can be coupled into an optical waveguide at the same time, prism coupling is not limited by polarization sensitivity any more, the problem that a traditional prism coupling mode is limited by phase matching constraint is solved, and light of different polarization states in the same light beam has the optimal coupling angle.

The invention relates to an optomechanical system for monitoring the mechanics of a sample, comprising: a photonic crystal (1, 2) with a substrate (1) and an array of transversally extending nanopillars (2) defining at least one row (3); a nanopillar cavity (4) for confining light and acting as a sensor for the sample; and a mirror region (5) formed in the array of nanopillars (2), the cavity (4) and the mirror region (5) being configured to prevent the propagation of light with Transverse-Magnetic (TM) polarization; the nanopillars (2) being spatially arranged to create a gradient of effective refractive index along the cavity (4), the maximum value of the effective refractive index inside the cavity (4) being lower than the effective refractive index of the mirror region (5).

The invention relates to the technical field of functional resin-based composite materials, in particular to a chopped carbon fiber felt-based impact-resistant and wave-absorbing dual-function-integrated resin-based composite metamaterial and a simplified preparation process thereof.The chopped carbon fiber felt-based impact-resistant and wave-absorbing dual-function-integrated resin-based composite metamaterial comprises an upper dielectric layer, an array structure layer, a lower dielectric layer and a bottom reflecting layer which are sequentially stacked from top to bottom; the array structure layer is of a central symmetry structure and is formed by periodically arranging m * n carbon fiber felt structure units; the carbon fiber felt structural unit is a square annular patch, the outer ring width L1 of the square annular patch is 23-26 mm, the inner ring width L2 of the square annular patch is 10-15 mm, and the periodic side length P of the carbon fiber felt structural unit is 30 mm. Due to the miniaturization design of the structural units, the oblique incidence responses of the metamaterial in a transverse electric polarization mode and a transverse magnetic polarization mode can reach 45 degrees and 60 degrees respectively; and when the incident angle of the transverse magnetic wave is up to 60 degrees, 80% of electromagnetic wave absorptivity can still be maintained.

The compact reconfigurable polarization converter is characterized in that the compact reconfigurable polarization converter comprises a ridge-type silicon waveguide, and the upper surface of the ridge part of the ridge-type silicon waveguide is provided with a periodic sub-wavelength nano grating structure which is used for regulating and controlling the effective refractive index of transverse electric wave and transverse magnetic wave modes and has an inclination angle; the nanometer grating structure is made of Sb2Sb3 or Sb2S3 phase change materials, the nanometer grating structure is composed of a plurality of nanometer antennas which are the same in size and shape and parallel to one another, gaps of the nanometer grating structure are filled with SiO2 materials, an Al2O layer and a graphene heating layer are sequentially arranged on the upper surface of the nanometer grating structure and the upper surface of the SiO2 filling materials from bottom to top, and the graphene heating layer is arranged on the lower surface of the nanometer grating structure. And metal electrode palladium gold is arranged on the upper surface of the graphene heating layer and located on the two sides of the flat plate part of the ridge-type silicon waveguide. The device has the advantages that the function is reconfigurable, the size is smaller, the broadband is wider, and the power consumption is lower.

The invention relates to the technical field of cyclotron calibration, and provides a medical cyclotron magnetic measurement system calibration method comprising the following steps: collecting radiuses of all detection coils of a medical cyclotron, and magnetic induction intensity data and temperature data of all detection coils at different heights; obtaining a longitudinal magnetic induction intensity sequence and a transverse magnetic induction intensity sequence; obtaining an abnormal coefficient of the target detection coil, and determining a standard detection coil and a non-standard detection coil; constructing a temperature-magnetism relation point set, determining the weight of each point in the temperature-magnetism relation point set, and further determining a temperature-magnetism relation curve; and calibrating the magnetic induction intensity data of the non-standard detection coil at each height according to the temperature-magnetism relation curve to realize calibration of the magnetic measurement system of the medical cyclotron. The invention aims to solve the problems that the internal resistance of different detection coils in a detection coil panel is different and can be changed, so that the calibration result of a magnetic measurement system is deviated, and the performance of a medical cyclotron is poor.

The invention discloses a super scattering and zero forward scattering coordinated regulation system and method based on optical gain, and relates to the technical field of optical scattering enhancement. The method comprises the steps that a space rectangular coordinate system is constructed; the cylindrical scatterer is vertically placed along the z axis; a transverse magnetic wave emitted by an emitting device is incident along the x axis; the emitting device emits the transverse magnetic wave, the transverse magnetic wave interacts with the cylindrical scatterer, and a total magnetic field of a free space in coordinates of the cylindrical scatterer is detected by using a detection device. Scattering coefficients and a total scattering cross section of different scattering channels of the cylinder are obtained based on the total magnetic field, key parameters for controlling scattering intensity and directivity are obtained based on the scattering coefficients and the total scattering cross section, and a scattering pattern is obtained by adjusting the key parameters of the cylindrical scatterer. The invention provides a new way for designing advanced optical devices applied to the fields of sub-wavelength antennas, optical communication, radar sensing, imaging and the like.

In the device, a rapid vacuum switch comprises a static contact and a moving contact, the static contact and the moving contact are separated to generate plasmas, and a transverse magnetic coil abuts against the static contact and the moving contact to excite a transverse magnetic field in a contact gap so as to accelerate dissipation of the plasmas in a zero region. The transverse magnetic coils are connected in series and reused in the transfer module; the transfer module is connected in parallel with the rapid vacuum switch through the auxiliary switch; the current limiting module is connected in parallel with the transfer module. The structure can enhance the post-arc medium recovery capability of the quick vacuum switch, improves the reliability of quick breaking of fault current of a generator source, has the advantages of strong breaking capability, high breaking speed, complete environmental friendliness and the like, and can meet the operation requirements of a large power generation system.

The invention relates to the technical field of filtering, in particular to a multi-layer magnetic suction type filtering device for a modular linkage dust collection workstation, which comprises a shell, a hopper, an air inlet pipe, an air speed sensor, a longitudinal moving assembly, an air outlet pipe, a transverse moving assembly, a hydraulic cylinder, a longitudinal magnetic part and a transverse magnetic part, the air inlet pipe is connected to the lower end of the left side of the shell, the air speed sensor is connected to an inner cavity of the air inlet pipe, the longitudinal moving assembly is connected to the rear side of the shell, the air outlet pipe is connected to the upper side of the shell, the transverse moving assembly array is connected to the front side of the shell, and the hydraulic cylinder is connected to the rear side of the shell. The output end of the hydraulic cylinder is connected with the longitudinal moving assembly, the longitudinal magnetic piece array is connected to the front side of the longitudinal moving assembly, and the transverse magnetic piece array is connected to the rear side of the transverse moving assembly. The magnetic field intensity of the windward side of the magnetic bar is changed by changing the arrangement position of the magnetic bar, and the filtering effect of the magnetic bar on large scrap iron is effectively improved.

A device for measuring a property of a substrate comprises an enclosure, two resonators, and two probes. The substrate has a top surface, and the enclosure defines a cavity for placing the substrate. The resonators extend into the cavity of the enclosure. The probes extend into the cavity, and each of the probes comprises a loop that extends about an axis that is substantially parallel to the top surface of the substrate so that the probes are operable to excite a transverse magnetic mode signal in the cavity.

The present invention provides an on-chip photonic circuit for generation of a polarization-entangled photon-pair state by utilizing the optical nonlinearities in a novel configuration comprising dual micro-resonators, with nearly degenerate transverse-electric- and transverse-magnetic-polarized cavity resonances for the two resonators coupled in series to a common bus waveguide, wherein, the pump laser and the generated signal and idle photons can be coupled in and out the photonic circuit.

The present invention provides a chip detection method and device, which relate to the technical field of lasers. The chip detection method provided by the present invention includes the following steps: step S10. obtaining a near-field distribution image of transverse electric mode light and a near-field distribution image of transverse magnetic mode light emitted by the chip to be detected; step S20. calculating the value of the polarization ratio K of the chip to be detected based on the near-field distribution image of the transverse electric mode light and the near-field distribution image of the transverse magnetic mode light, wherein the polarization ratio K is the polarization ratio of the transverse electric mode light or the transverse magnetic mode light; step S30. comparing the calculated value of the polarization ratio K with a standard range; when the value of the polarization ratio K is within the standard range, determining that the stress of the chip to be detected is qualified; when the value of the polarization ratio K is not within the standard range, determining that the stress of the chip to be detected is unqualified; step S40. for the chip to be detected with unqualified stress, obtaining the defect position on the chip to be detected that causes the unqualified stress based on the near-field distribution image of its transverse magnetic mode light.

A polarization beam splitter includes an input port, first and second output ports, and a polarization splitting region coupled between the input port and the first and second output ports. The input port is adapted to receive guided optical signals that are polarization multiplexed, including a transverse electric (TE) optical signal and a transverse magnetic (TM) optical signal. The polarization splitting region includes a pattern of at least two materials having different refractive indexes. The pattern is shaped to demultiplex the TE and TM optical signals by directing a first power majority of the TE optical signal received at the input port to the second output port via asymmetrical power splitting while directing a second power majority of the TM optical signal received at the input port to the first output port via multipath interferometry.

Embodiments of the present disclosure relate to a method of optical device metrology and a device. The method includes introducing a light beam into an optical device during a first time period at an initial angle, the optical device including an anisotropic crystal optical substrate, the optical device including a first surface and a second surface, propagating the light beam through the optical device, the light beam including a transverse electric polarization light and a transverse magnetic polarization light, measuring a plurality of measurements, during the first time period, the plurality of measurements including a quantity of the transverse electric polarization light and the transverse magnetic polarization light transmitted from a plurality of locations on the first surface or the second surface during the first time period, wherein the measuring is performed by a detector, and using the measurements during the first time period to determine optical loss.

The invention provides an iron-based amorphous nanocrystalline soft magnetic alloy and an annealing process and a manufacturing method thereof. The annealing process comprises the steps that an amorphous strip is obtained and wound to obtain a magnetic core; in a vacuum state, transverse magnetic treatment is firstly carried out on the magnetic core to obtain a transverse magnetic core, and the transverse magnetic core is cooled to the normal temperature; and in the vacuum state, the cooled transverse magnetic core is subjected to heat treatment to obtain a heat treatment magnetic core, the heat treatment magnetic core is cooled to the normal temperature, and then the iron-based amorphous nanocrystalline soft magnetic alloy is obtained. According to the method, the pretreatment process and the transverse magnetic adding process are combined together, so that on the basis of reducing one process, the process flow is shortened, and the production efficiency is improved.

An aerosol-generating device for generating an aerosol by microwave heating of an aerosol-forming substrate contained in a substrate portion of a cylindrical aerosol-generating article is provided, the aerosol-generating device including: a microwave generator configured to generate a microwave signal; a cylindrical microwave cavity configured to removably receive at least the substrate portion of the cylindrical aerosol-generating article; and a coaxial feed exciter operatively connected to the microwave generator and coupled to the cylindrical microwave cavity such as to feed the microwave signal into the cylindrical microwave cavity and excite at least one specific transverse magnetic mode or transverse electric mode within the cylindrical microwave cavity when the substrate portion of the cylindrical aerosol-generating article is received in the cylindrical microwave cavity. An aerosol-generating system including the aerosol-generating device and a cylindrical aerosol-generating article including a distal substrate portion containing an aerosol-forming substrate is also provided.

The rotor comprises an even number of magnetic poles which are annularly and uniformly distributed, each magnetic pole is provided with at least three layers of structure groups from inside to outside, and each layer of structure group comprises a transverse magnetic steel groove located in the middle; the two sides of the transverse magnetic steel grooves of the outermost layer structure group are provided with inclined air magnetic isolation grooves. Inclined magnetic steel grooves are formed in the two sides of the transverse magnetic steel grooves of the other layers of structure groups; first air magnetic isolation grooves are formed between the transverse magnetic steel grooves and the inclined magnetic steel grooves; the first edge of the first air magnetic isolation groove is located on the extension line of the outer long edge of the inclined magnetic steel groove, the second edge is parallel to the inner end edge of the inclined magnetic steel groove and is provided with a second magnetic isolation bridge, and the third edge is parallel to the end edge of the transverse magnetic steel groove and is provided with a third magnetic isolation bridge; the transverse magnetic steel grooves are provided with first ferrite magnetic steel, and second ferrite magnetic steel is selectively arranged in the inclined magnetic steel grooves. Therefore, the magnetic steel can be flexibly arranged according to different motor performance requirements, so as to obtain a balance between motor performance, cost and other aspects.

The present application discloses a magnetic control coil, comprising: a coil support structure and N pairs of coil assemblies, wherein the coil assemblies are arranged in a planar manner along the surface of the coil support structure; N is an integer not less than 1. The present application employs a plurality of surface-type coils to replace conventional rectangular cross-section circular, racetrack-shaped, or saddle-shaped coils, which can enhance the generation efficiency of transverse magnetic fields, thereby effectively suppressing the introduction of impurities and the generation of defects during crystal manufacturing processes and improving the efficiency and quality of crystal manufacturing.

The present invention discloses a multi-magnetic field induction heating method and device for steel plates. One or more groups of longitudinal magnetic induction coils and one or more groups of transverse magnetic induction coils are arranged on the surface of the steel plates. During the heat treatment process, the steel plates are heated in a variety of combinations according to the specifications of the steel plates. When the temperature of the steel plates is below the Curie temperature, the longitudinal magnetic induction coils are used for heating. When the temperature of the steel plates is above the Curie temperature, the transverse magnetic induction coils or a combination of longitudinal magnetic and transverse magnetic induction coils are used for heating. The present invention proposes a combined induction heating method and device combining longitudinal and transverse magnetic fields, which can effectively solve the need for induction heating under existing working conditions and meet the requirements of products and processes for heating temperature and uniformity of steel plate temperature.

The present invention discloses a transverse flux permanent magnet motor with mechanical magnetic field regulation, which includes a stator core arranged in a rotary manner with the motor axis as the center; the stator core corresponds to the rotor core to form a magnetic flux path in the plane of the motor axis; the side of the stator core is open; a permanent magnet is respectively arranged on the same side of the annular bodies on both sides of the opening; the rotor core is a semi-annular body; the two ends of the semi-annular body are respectively in corresponding contact with any one permanent magnet and the opening end far away from the permanent magnet to form a closed magnetic flux path; the stator core and the rotor core of two adjacent magnetic flux paths are docked based on different permanent magnets; the magnetic field regulation assembly includes: a magnetic field regulation tray and a magnetic field regulation block; the magnetic field regulation tray is provided with a groove for guiding the centrifugal displacement of the magnetic field regulation block; the magnetic field regulation block is centrifugally displaced to the edge of the magnetic field regulation tray and forms a magnetic circuit with the permanent magnet on the stator core to generate magnetic leakage. The present invention is assembled by modular iron cores, has a simple structure, is beneficial to processing, and reduces production costs.

The present invention relates to a Mach-Zehnder interferometer cascade comb filter and a wavelength division multiplexer / demultiplexer to solve the technical problems of wavelength sensitivity introduced by the wavelength division multiplexer of the existing cascade Mach-Zehnder interferometer and its unsuitability for transverse magnetic waves. The filter comprises n-stage comb filter units connected in series, and the m-th stage comb filter unit comprises 2 m A comb filter is provided, each comb filter includes a Mach-Zehnder interferometer, and the Mach-Zehnder interferometer includes a first optical coupling component, a transmission waveguide, and a second optical coupling component arranged in sequence along the transmission direction of the light wave; the first transmission waveguide in the transmission waveguide is provided with a phase delay waveguide, and after TE polarized light and TM polarized light pass through the phase delay waveguide, the phase difference between the TE polarization and the TM polarization is 2πA, where A is a positive integer, and the group refractive index difference between the TE polarization and the TM polarization is within 15%.

The invention discloses an efficient transverse magnetic inductor with adjustable magnetic flux density for heating special-shaped edges of metal plates, which belongs to the technical field of induction heating of metal materials and comprises a first inductor main body and a second inductor main body which are symmetrically arranged up and down. The first inductor body comprises a first straight copper pipe and a first magnetic flux density adjustable magnetism gathering structural body, and the first magnetic flux density adjustable magnetism gathering structural body is arranged on the first straight copper pipe. The second inductor body comprises a second straight copper pipe and a second magnetic flux density adjustable magnetism gathering structural body, and the second magnetic flux density adjustable magnetism gathering structural body is arranged on the second straight copper pipe. According to the efficient transverse magnetic inductor with the adjustable magnetic flux density for heating the special-shaped edge of the metal plate, accurate local heating is conducted on the special-shaped edge, energy consumption can be reduced, the rate of finished products can be increased, and the product quality can be improved.

The application provides a polarization management device and a closed-loop control method thereof. The polarization management device comprises: a polarization separation unit configured to receive an input optical signal and split the input optical signal into a first transverse electric mode optical component and a first transverse magnetic mode optical component; a polarization conversion unit configured to receive the first transverse magnetic mode optical component and convert the polarization state of the first transverse magnetic mode optical component to obtain a second transverse electric mode optical component; a first phase adjustment unit configured to perform first phase adjustment on the second transverse electric mode optical component to obtain a third transverse electric mode optical component; a second phase adjustment unit configured to receive the first transverse electric mode optical component and the third transverse electric mode optical component, perform second phase adjustment, and combine the first transverse electric mode optical component and the third transverse electric mode optical component to obtain a coupled optical signal; a sampling monitoring unit configured to sample the coupled optical signal to obtain a monitoring optical signal, split the monitoring optical signal into a fourth transverse electric mode optical component and a second transverse magnetic mode optical component; and a controller configured to adjust the working state of the first phase adjustment unit and / or the second phase adjustment unit based on the fourth transverse electric mode optical component and the second transverse magnetic mode optical component.

This invention discloses a quasi-BIC optical filter and its chiral modulation method, relating to the field of optical metasurface technology. The method includes: an optical filter based on a metasurface structure, the metasurface comprising several square lattices, each square lattice having an interrupted annular groove etched on it; disrupting the in-plane inversion structural symmetry of the annular grooves in the square lattices of the metasurface to achieve a metasurface-supported quasi-BIC mode, specifically by extending one end of one of the interrupted annular grooves by a certain distance while simultaneously shortening the adjacent ends of adjacent grooves by the same distance, obtaining the transmittance at the quasi-BIC frequency point when switching the transverse magnetic wave in the x-direction of the metasurface to RCP and LCP, and chiral modulation of the circular dichroism of the metasurface based on the transmittance of RCP and LCP.

An optical integrated device may include a substrate, a first laser diode oscillating in a transverse magnetic mode (TM mode) on the substrate, and a second laser diode oscillating in a transverse electric mode (TE mode) on the substrate, wherein the first laser diode includes a first body in a shape of a disk, and through holes penetrating the first body.

An integrated electro-optical non-reciprocal mode converter based on birefringent crystal refractive index matching comprises a chip, the upper layer of the chip is an electro-optical material film with birefringent characteristics, a mode converter is prepared on the electro-optical material film, and the mode converter is a two-port device; the first port is used for receiving an input optical signal of a mode 1 and allowing the optical signal to enter the mode converter; and the second port is used for outputting the converted optical signal in the mode 2. The refractive index difference of a birefringent material to a transverse electric mode (TE) and a transverse magnetic mode (TM) is utilized to realize the pre-coarse matching of the refractive indexes of TE and TM modes, and then the fine matching of the refractive indexes and wave vectors is realized in combination with electro-optical modulation, so that the integrated electro-optical mode converter insensitive to the process is realized. The device is simple in structure and has a wide application prospect.