68 results about "Transverse magnetic" patented technology

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.

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 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 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.

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.

This invention discloses a transverse flux linear-rotary switched reluctance generator with an overall axisymmetric decoupled drive structure. The stator module is composed of upper, middle, and lower stators layered axially. Single-phase linear windings are evenly distributed on the outermost salient-pole stator teeth, while three-phase rotating windings are arranged on the innermost stator yoke. The moving parts include a centrally located double-sided segmented rotor and three external mover flux rings. The internal rotating stator is interlocked with the external linear stator, resulting in a compact structure. Based on the transverse flux principle, the rotor and mover movements are perpendicular to the air gap flux, and the linear and rotating magnetic circuits are relatively independent, resulting in minimal magnetic coupling and electromagnetic decoupling. The control circuit uses fewer power switching devices, supporting multi-mode drive including series, parallel, and hybrid series-parallel windings, thus widening the speed range. This motor features low-speed, high-torque characteristics, eliminating the need for a gearbox in hybrid power generation systems, and is suitable for low-speed direct-drive combined power generation applications such as wave energy and ocean current energy.

The present application relates to battery processing and manufacturing technology field, provide a kind of transverse magnetic flux radio frequency induction heating battery pole piece blank area wrinkle removal method, megahertz level radio frequency signal is output by radio frequency power supply, after impedance matching, lossless feed into transverse magnetic flux inductor, generate transverse magnetic force line to make eddy current closed in battery pole piece plane. Again with active water-cooling magnetic flux shield plate generates reverse magnetic field shielding magnetic flux, and through built-in water-cooling channel and timely heat dissipation. While by supporting support roller keeps inductor and pole piece gap constant, cooperate temperature sensor closed loop temperature control and heat to softening state, by production line winding mechanism drive plastic extension of softening zone, finally through frozen roll quenching, overall complete battery pole piece complete heat treatment process. The present application also provides a kind of device, the method and device realize ultra-thin battery pole piece effective induction heating and online annealing. Both can efficiently eliminate pole piece processing residual stress, smooth wrinkle defect, and whole process without damaging coating structure, no powder crack problem.

The invention relates to the technical field of geological radar detection, in particular to a multi-frequency polarization radar pipe-jacking soil body detection method, device and equipment and a storage medium. Comprising the steps of generating a multi-frequency electromagnetic detection signal and applying the signal to an underground medium; a multi-frequency electromagnetic detection signal acts on an underground medium in a transverse electric mode and a transverse magnetic mode to form a multi-polarization detection condition; collecting a four-channel reflection response signal generated by the underground medium under a multi-frequency and multi-polarization detection condition; processing the four-channel reflection response signals, namely aligning the acquired four-channel reflection response signals with time based on a unified hardware clock trigger signal, and analyzing difference characteristics among the reflection response signals under different frequencies and different polarization modes; and according to the difference characteristics, the distribution condition of irregular target bodies and layered interfaces in the underground medium is judged, and the dense state of the soil body in the pipe jacking construction area is obtained. According to the invention, accurate determination of the compaction state of the soil body in the pipe-jacking construction area is realized.

The invention discloses an asymmetric longitudinal and transverse magnetic composite contact structure and a vacuum arc-extinguishing chamber. The contact structure comprises a static contact and a moving contact. The static contact comprises a central conductive base, a spiral conductive structure and a first conductive contact part; the central conductive base is used for connecting a static conductive rod; the spiral conductive structure is connected between the central conductive base and the first conductive contact part and is configured to generate a longitudinal magnetic field at the first conductive contact part when current flows through the spiral conductive structure; the moving contact comprises a second conductive contact part and is electrically connected with the moving conductive rod; each of the first conductive contact part and the second conductive contact part comprises a central connecting part and a plurality of conductive arms extending outwards in the radial direction from the central connecting part; and the spiral conductive structure of the static contact is configured to generate a transverse magnetic field when current flows between the conductive arm of the first conductive contact part and the corresponding conductive arm of the second conductive contact part. According to the invention, a more suitable magnetic field can be generated according to the arc position during breaking, and the reliability and operation safety of breaking are improved.

The invention relates to the technical field of current transformers, in particular to a wide-range current transformer. The transformer comprises an iron core, a winding, a multi-layer electromagnetic shielding layer and a shell, the winding is wound on the iron core, the multi-layer electromagnetic shielding layer is arranged around the iron core and the winding, and all the parts are fixedly installed in the shell. The iron core is made of customized ultracrystalline alloy through winding, transverse magnetic treatment and vacuum annealing, the machining error is controlled within + / -5 microns, the magnetic performance is excellent, and the high-temperature stability is high; the winding is made of high-purity oxygen-free copper enameled wires and is wound in a layered, segmented and nanoscale precision mode, and polyimide films are arranged between layers for insulation. The multiple electromagnetic shielding layers are of a composite structure of permalloy on the inner layer and copper on the outer layer, and full-band interference resistance is achieved through collaborative optimization. According to the invention, high-precision measurement is realized in a rated current range of 10%-200%, and the device is suitable for electric energy metering, new energy power generation and other scenes, and has the characteristics of accurate measurement, good stability, strong interference resistance and excellent dynamic response.

An optical chip includes: an optical port, coupled to a fiber and configured to receive a first optical signal from the fiber, where the first optical signal includes a component in a transverse magnetic TM mode; a polarization splitter and rotator PSR, configured to perform first processing on the first optical signal to generate a second optical signal, where the second optical signal is in a transverse electric TE mode, and the second optical signal is a single-channel multi-wavelength optical signal; at least one wavelength demultiplexer DeMux, configured to perform second processing on the second optical signal to generate a third optical signal, where the third optical signal is a multi-channel single-wavelength optical signal; and a photodetector array, configured to convert the third optical signal into an electrical signal. The optical port, the PSR, and the at least one DeMux are made of silicon nitride SiN.

The bidirectional magnetic crushing device for the ferrite magnetic sheets comprises a rack, the rack has a magnetic sheet conveying function, and a longitudinal magnetic crushing mechanism and a transverse magnetic crushing mechanism are sequentially arranged on the rack in the moving direction of the magnetic sheets; the longitudinal magnetic crushing mechanism is perpendicular to the transverse magnetic crushing mechanism, the transverse magnetic crushing mechanism is provided with a sensor, and the sensor can identify magnetic material sheets entering the transverse magnetic crushing mechanism. According to the bidirectional magnetic crushing device for the ferrite magnetic material sheet, uniform magnetic crushing of the magnetic material sheet is realized through the arrangement of the transverse magnetic crushing mechanism and the longitudinal magnetic crushing mechanism, so that the crushed magnetic material sheet is uniform in particle shape, uniform and round in edge crack and high in product percent of pass, and the automation degree of the magnetic crushing device is improved through the arrangement of a sensor.

The application provides a nuclear magnetic resonance gyroscope magnetic field compensation method based on Xe atomic frequency harmonic signals. First, the phase-locked loop is used to measure the Xe atomic magnetic moment precession signals in the nuclear magnetic resonance gyroscope, and the measurement results are fed back to the magnetic field transverse coil to maintain the stable precession of the Xe atomic transverse magnetic moment. Then, the frequency components of the measured Xe atomic magnetic moment precession signals are analyzed, and the harmonic signal amplitude oscillating at the Xe atomic resonance frequency contained in the frequency components is obtained. The harmonic signal amplitude is directly caused by the transverse residual magnetism, and the existence and size of the harmonic signal amplitude can represent the transverse residual magnetism state. With the harmonic signal amplitude as a reference quantity, the output of the magnetic field transverse coil of the nuclear magnetic resonance gyroscope is adjusted to minimize the harmonic signal amplitude, and the online monitoring and closed-loop compensation of the transverse residual magnetism are realized. The application can effectively suppress the influence of the transverse residual magnetism on the accuracy of the nuclear magnetic resonance gyroscope, and improve the long-term stability and measurement accuracy of the nuclear magnetic resonance gyroscope.

A method for a compact mid-infrared polarization splitter and rotator (PSR) that may include receiving an input signal at a waveguide, the input signal having a transverse electric (TE) mode and a transverse magnetic (TM) mode such that the TE mode may be a zero order or higher mode. The method may further include conditioning, by a taper of the waveguide, the input signal to convert the TM mode to an additional TE mode and bifurcating, after the conditioning and by a bifurcation section of the waveguide positioned after the taper, the input signal may be split into a first branch and a second branch of the waveguide. The method may further include outputting, out of the first branch, a first output signal having the TE mode and outputting, out of the second branch, a second output signal.

The disclosure provides an on-chip polarization beam splitter based on a double-slot waveguide, comprising a substrate, two core waveguides and three restriction waveguides. The three restriction waveguides are arranged alternately with the two core waveguides, and there are hollow slots between two adjacent waveguides; the first core waveguide, the first restriction waveguide, the second restriction waveguide and the two hollow slots between adjacent waveguides together constitute a first double-slot waveguide; the second core waveguide, the second restriction waveguide, the third restriction waveguide and the two hollow slots between adjacent waveguides together constitute a second double-slot waveguide. The double-slot waveguide structure has a strong polarization-dependent mode field distribution regulation characteristic, which can directly separate the fundamental transverse electric mode and the fundamental transverse magnetic mode to different waveguides without the help of high-order mode conversion, avoiding mode conversion loss; the polarization beam splitter provided by the disclosure has the advantages of small coupling loss, short coupling distance, high polarization extinction ratio and simple preparation process while realizing effective polarization beam splitting, which is beneficial to compact and large-scale photonic integration applications.

The invention relates to the technical field of optics, and discloses an optical polarization rotator and a polarization diversity system.The optical polarization rotator comprises a silicon waveguide layer and a silicon nitride waveguide layer which are arranged in a spaced mode in the first direction, and the first direction is perpendicular to the optical path transmission direction; in the optical path transmission direction, the c silicon waveguide layer comprises a first input waveguide, a first polarization rotation waveguide and a first output waveguide which are sequentially cascaded, the first input waveguide and the first output waveguide serve as mode converters respectively, the first input waveguide is used for inputting optical signals to the first polarization rotation waveguide, and the second input waveguide is used for outputting optical signals to the second polarization rotation waveguide. The first output waveguide is used for outputting the optical signal after mode polarization rotation; the projection of the silicon nitride waveguide layer in the first direction is asymmetric with respect to the central axis of the polarization rotation waveguide, so that the symmetry of a silicon waveguide layer device structure can be broken, the effective refractive index difference between a transverse electric mode optical signal and a transverse magnetic mode optical signal is increased, and the device length is shortened under the condition of ensuring high conversion efficiency and high bandwidth.

The utility model discloses a common-mode and differential-mode integrated inductor, which comprises a base provided with a separation positioning plate, two positioning grooves and four conductive pins; the magnetic core assembly comprises a closed-loop outer magnetic core and two open-loop inner magnetic cores, the two inner magnetic cores are located on the two opposite sides of the separation positioning plate respectively, the outer magnetic core comprises two outer longitudinal magnetic rods and two outer transverse magnetic rods, each inner magnetic core comprises an inner longitudinal magnetic rod, a center magnetic rod and two inner transverse magnetic rods, a magnetic gap notch is formed in the center of the center magnetic rod, and the two inner transverse magnetic rods are arranged in the center of the center magnetic rod. The central magnetic rod is propped against one side of the separation positioning plate; the two groups of coils are respectively arranged on the two positioning grooves, and each group of coils is wound outside the outer longitudinal magnetic rod and the inner longitudinal magnetic rod. The filter has the function of filtering common-mode noise and differential-mode noise at the same time, can effectively save space, can be widely applied to the field of electromagnetic interference filtering, can reduce loss when magnetic fields repel each other, and is high in consistency of hindering and suppressing the differential-mode noise when being used as two differential-mode inductors.

The utility model discloses a novel flat plate type headphone, which comprises a coil, a vibrating diaphragm and a first row-shaped magnet, the first row-shaped magnets comprise transverse magnets which are arranged in a staggered manner at intervals, and N poles of the transverse magnets are parallel to the vibrating diaphragm; vertical magnets are arranged between the transverse magnetic poles which are arranged at intervals in a staggered mode, and the N pole of each vertical magnet is perpendicular to the vibrating diaphragm. Inclined magnets used for forming a transition magnetic field with the transverse magnets are also arranged between the transverse magnets which are arranged at intervals in a staggered manner; an angle is formed between the N-pole direction of the inclined magnets and the vibrating diaphragm; the coil is connected between the positive electrode and the negative electrode of the signal source, and the wiring position of the coil is correspondingly arranged on the vibrating diaphragm located on the straight line projected by the transverse magnet. According to the utility model, through reasonable inclined, parallel and vertical magnet arrangement, the magnetic field efficiency is improved, and the edge center strength is enhanced.

The invention discloses a transverse magnetic induction heater, a heating system and a production line. The transverse magnetic induction heater comprises a frame, a lower inductor, an upper inductor, a lifting adjusting mechanism, a position sensor and a control unit. The lifting adjusting mechanism is arranged on the top of the frame, connected with the upper inductor and used for driving the upper inductor to be close to or away from the lower inductor so as to adjust the heating gap between the upper inductor and the lower inductor. The control unit calculates the theoretical position of the upper inductor according to the operation parameters of the lifting adjusting mechanism, determines the actual position of the upper inductor according to the real-time displacement detected by the position sensor, and compares the actual position and the theoretical position of the upper inductor so as to judge the accurate position of the upper inductor. According to the method, position misjudgment caused by faults or errors of a single signal source is eliminated, it is ensured that the actual position of the upper inductor is matched with the thickness of the plate blank, and the control accuracy of the heating gap is guaranteed.

The invention provides a magnetic structure based on transverse magnetic field heat treatment, a magnetic device and a preparation method. The preparation method of the magnetic structure comprises the following steps: step 1, preparing a formed magnetic structure; and 2, performing magnetic field heat treatment on the magnetic structure, wherein the included angle between the direction of a magnetic field applied in the magnetic field heat treatment and the target magnetic flux direction of the magnetic structure is 80-100 degrees. In the heat treatment process, transverse magnetic anisotropy is artificially and purposefully established in the magnetic powder particles, the direct-current magnetic field saturation resistance of the magnetic structure is improved from the intrinsic characteristic of the material, and the direct-current bias performance of the magnetic structure is enhanced. Under the alternating-current and direct-current superposition working condition, the magnetic structure can ensure proper magnetic conductivity and can also have extremely high direct-current magnetic field saturation resistance. The magnetic structure can be a magnetic powder core or be used for manufacturing the magnetic powder core, so that the performance of the magnetic powder core better conforms to actual application scenes with large direct-current components such as PFC inductors and energy storage inductors, and the stability of a circuit and the miniaturization of components are guaranteed.

The invention relates to the technical field of sensors, and discloses a dual Fano resonance sensor and a detection and optimization method, the dual Fano resonance sensor comprises an optical coupling prism, a silicon dioxide grating structure layer, a graphene layer, a liquid sensing medium area, a first aluminum nitride waveguide layer, a perfluororesin waveguide layer, a second aluminum nitride waveguide layer and a gas sensing medium area; the silicon dioxide grating structure layer is attached to the bottom surface of the optical coupling prism, and the graphene layer is attached to the lower surface of the silicon dioxide grating structure layer; the liquid sensing medium area is located between the graphene layer and the first aluminum nitride waveguide layer; the gas sensing medium area is positioned below the second aluminum nitride waveguide layer; when a transverse magnetic wave is incident through the optical coupling prism, two independent Fano formants can be simultaneously excited in a reflection spectrum, a first Fano formant coupled with the liquid sensing medium area is used for detecting a liquid medium, and a second Fano formant coupled with the gas sensing medium area is used for detecting a gas medium.

The application discloses a kind of based on optical gain's ultra-scattering and zero forward scattering synergic control system and method, it is related to optical scattering enhancement technical field.Method includes constructing space rectangular coordinate system, let cylindrical scatterer be placed vertically along z axis, transverse magnetic wave is emitted by emission device along x axis incidence, emission device emits transverse magnetic wave, let transverse magnetic wave and cylindrical scatterer interact, total magnetic field in the free space of cylindrical scatterer coordinate is detected using detection device, based on total magnetic field, scattering coefficient of different scattering channels of cylinder and total scattering cross section are obtained, based on scattering coefficient and total scattering cross section, key parameters for controlling scattering intensity and directionality are obtained, scattering pattern is obtained by adjusting key parameters of cylindrical scatterer.The application provides a new way for designing advanced optical devices applied in subwavelength antenna, optical communication, radar sensing and imaging and other fields.

The invention discloses a transition radiation polarized wave regulation and control method and system based on an isotropic material. The regulation and control method comprises the following steps: calculating an equivalent current according to an oblique incidence electronic pulse velocity vector and converting the current into a frequency and wave number space; calculating an electron radiation field equation and an interface radiation field equation according to the Maxwell equation set; solving the electron radiation field equation and the interface radiation field equation to obtain an electron radiation field and an interface radiation field; adopting a phase matching algorithm to calculate a total field on two sides of the regulation and control material interface; calculating a transverse magnetic wave far-field radiation angular spectrum and a transverse electric wave far-field radiation angular spectrum excited during electron incidence by adopting boundary phase matching; and regulating and controlling the separation of the transition radiation polarized waves in space according to the relationship between the calculated energy angular spectrum spatial distribution of the transition radiation field and the incident angle of the electronic pulse and / or the electromagnetic parameters of the regulation and control material. According to the invention, the problem that excitation of different modes of transition radiation waves and separation of different modes of radiation fields in space are difficult to autonomously regulate and control in the prior art is solved.