25 results about "Waveguide array" patented technology

The present disclosure relates to a radiation assembly, a waveguide antenna sub-arrays, and a waveguide array antenna. The radiation assembly for the waveguide array antenna comprises: a first radiation layer having a plurality of first radiation windows, each of the plurality of first radiation windows has a metal grid to divide the first radiation window into two radiation holes; and a second radiation layer having a plurality of second radiation windows, the plurality of second radiation windows correspond to the plurality of first radiation windows one to one, and the plurality of second radiation windows of the second radiation layer do not have any metal grid, wherein the thickness of the second radiation layer is greater than the thickness of the first radiation layer, and wherein the first radiation layer and the second radiation layer are manufactured independently of each other. The radiation assembly can enhance the polarization purity of the aperture radiation of the waveguide array antenna to which it belongs, so as to achieve a higher antenna cross polarization index.

A method for fabricating an optical connector assembly that optically connects two optical waveguides is provided, comprising: 1) arranging that the terminal faces of the two optical waveguides are in a proximity and in contact with a volume of a photoactivable agent； 2) determining a three-dimensional geometry for each optical connector of the optical connector assembly based on three-dimensional coordinates of each end surface of the pre-determined light transmission channel in the two optical waveguides； 3) forming each optical connector of the optical connector assembly in the volume of the photoactivable agent via direct writing lithography (e.g. multiphoton lithography)； and optionally 4) forming a cladding that surrounds the optical connector assembly with a refractive index thereof smaller than each optical connector of the optical connector assembly. This method allows for in situ and integrated fabrication of optical connector assemblies and is applicable to multi / single-core or hollow-core fibers or waveguide arrays.

A waveguide array is configured to convey ultrasonic soundwaves. The waveguide array includes a plurality of waveguide elements. Each of the waveguide elements defines a proximal end configured to receive the ultrasonic soundwaves produced by the transducer and a distal end opposing the proximal end. A cross-sectional width of each of the waveguide elements is less than a wavelength of the ultrasonic soundwaves. An inward area of the waveguide array at the proximal ends of the waveguide elements is greater than an outward area of the waveguide array at the distal ends of the waveguide elements.

The application discloses a large-scale and reconfigurable three-dimensional integrated optical neural network chip, and belongs to the field of optical neural networks, and comprises an optical information input layer, a reconfigurable hidden layer, a detection output layer and a feedback control structure; the reconfigurable hidden layer comprises a plurality of cascaded waveguide structures, wherein each waveguide structure comprises an independent modulation area and a continuous coupling area, the optical waveguides of the independent modulation area are independently transmitted and independently modulated by a light modulator; after reaching the continuous coupling area, the evanescent waves of the waveguide array are continuously coupled with each other in the transmission direction and are integrally modulated by the light modulator; and the feedback control structure adjusts a light modulator loading signal according to the detected output light intensity spatial distribution information, so that the reconfigurable hidden layer identifies the current input signal. The application can greatly improve the actual computing power of the current on-chip integrated optical neural network, and also provides a solution to the problems of low reconfigurability and large system size of the current three-dimensional spatial diffraction optical neural network.

This invention discloses an apparatus and method for fabricating optical waveguide arrays. The fabrication apparatus includes a housing, a mold, a glue injection component, a coating assembly, and at least one light source. The housing has a receiving cavity and an air inlet and an air outlet communicating with the receiving cavity. The mold is disposed within the receiving cavity, and an opening is formed on one side of the mold in the height direction. One end of the glue injection component extends into the receiving cavity and faces the opening. The coating assembly is disposed within the receiving cavity and faces the mold. The light source is disposed above the opening, and the light emitted by the light source illuminates the mold. The fabrication apparatus for optical waveguide arrays according to this invention can avoid deformation caused by curing stress when using adhesives in optical waveguide arrays, and can adjust the horizontal level of the optical waveguide array, thereby improving optical imaging quality and making the optical waveguide array more versatile.

An equivalent negative refractive index plate lens and a manufacturing method therefor. The method comprises: forming reflective layers on two opposite sides of a transparent substrate layer; forming a protective layer on each reflective layer; forming a first bonding metal layer on one of protective layers, and forming a second bonding metal layer on the other; stacking at least two plate optical waveguides in a first direction, a first bonding metal layer of a waveguide abutting against a second bonding metal layer of an adjacent waveguide, and heating and applying pressure; taking two groups of multi-layer plate optical waveguides, cutting one of the waveguides into a plurality of first strip plate optical waveguides, and cutting the other one into a plurality of second strip plate optical waveguides; and superimposing a first and second optical waveguide array in the first direction, and adding protective window plates on two sides.

An integrated photonics arrayed waveguide multiplexing / demultiplexing device is disclosed. The device includes an array of waveguides having an incident light waveguide section including a phase correcting region, a transmitted light waveguide section, a tunable reflector, wherein each pair of consecutive waveguides in the array includes a coupler. The coupler configured to combine light from the transmitted light waveguide sections, determine therefrom an optical phase difference between the two consecutive waveguides, and wherein the couplers are further configured to determine therefrom a change in optical path length required for each of two consecutive waveguides to reach a predetermined optical phase difference, and wherein each phase correcting region is configured to apply the change to correct the optical path length of the respective waveguide.

This utility model belongs to the field of waveguide technology, specifically relating to a waveguide array structure. The utility model includes: a plurality of waveguides arranged in an m*n structure, where m≥2 and n≥2; each sleeve is fitted over each waveguide, with a gap between the sleeve and the waveguide; a vacuum-sealed flange is located on one side of the waveguides; a supporting flange is located on the other side of the waveguides; both ends of the sleeves are welded to the vacuum-sealed flange and the supporting flange, respectively; the vacuum-sealed flange has a liquid inlet and an outlet, as well as at least one internal flow channel; the supporting flange has at least two internal flow channels, and the liquid inlet, outlet, internal flow channels, and gaps constitute a unidirectional circulation flow channel. This utility model addresses the technical problems of existing waveguide array water-cooling systems, such as complexity, low integration, and uneven cooling effect.

The invention discloses an electricity-magnetism-heat-force collaborative optimization intensive power supply and distribution system integrated structure, and belongs to the technical field of power supply and distribution systems. The device comprises a top-layer intelligent control and communication unit, a middle-layer high-frequency power conversion unit group, a bottom-layer heat dissipation and structure bearing unit, an integrated shielding protection shell and an interface magnetic shielding monitoring unit module, high integration is realized through a vertical stacking coaxial framework, and the size and interconnection paths are reduced; the function multiplexing of electromagnetic protection and heat dissipation is realized by two-stage nested shielding and a targeted liquid cooling and bearing substrate; the adjustable clamping assembly which is penetrated through by full-path magnetic shielding gives consideration to interface shielding and cable adaptation flexibility; the honeycomb cut-off waveguide array is matched with SMA alloy passive driving and sensor active control to realize dynamic balance of heat dissipation and shielding; and a multi-field coupling relationship is optimized by a multi-physical field coordination strategy, so that the power density, the electromagnetic compatibility, the thermal management capability and the service reliability of the system are improved.

This application discloses a two-dimensional optical phased array based on mode division multiplexing, including an optical beamsplitter array and several sets of waveguide arrays. Each set of waveguide arrays includes several amplitude modulators, several phase modulators, several waveguide leads, a waveguide bus, several directional couplers, and several grating couplers. The amplitude modulators, phase modulators, and waveguide leads form a branch. The waveguide leads of each branch are connected to the waveguide bus through the directional couplers. The waveguide bus is connected to several grating couplers through the directional couplers. Embodiments of this application can improve the field of view and integration. This application can be widely applied in the field of optical device technology.

This application relates to the technical field of photonic integrated circuits, and discloses a chip structure and method for enhancing local evanescent wave optical fields. The chip structure includes multiple stages of cascaded multimode interference couplers (MMCs). Each MMC includes an input waveguide, a multimode waveguide region, and an output waveguide. The output waveguides of each final stage MMC are connected via loop waveguides, and a phase modulator is mounted on the loop waveguides. The multiple loop waveguides of the multiple MMCs form a waveguide array region. This application has the advantage of improving imaging resolution, and the structure has a simple process and low manufacturing cost.

This invention discloses a method for measuring the coupling coefficient based on an identical waveguide array, belonging to the field of measurement and testing of optical waveguide properties. The method includes: constructing a measurement system for the coupling coefficient of the waveguide array; testing the evolution results of the waveguide array; and recalculating the coupling coefficient through simulation experiments. Based on the consistency between the evolution process of photons in the waveguide array and continuous-time quantum walks, this invention uses an identical single-mode waveguide array, relies on the physical model of continuous-time quantum walks, and measures the output probability amplitude at different evolution lengths. The simulation and test results are evaluated using the least squares method to finally obtain the waveguide coupling coefficient. This method has low requirements for experimental equipment, low workload, and requires less sample width; it can accurately predict and analyze the evolution of light in the waveguide array.

An ion-doped optical waveguide structure and a use method thereof, and an ion-doped optical waveguide array are provided. The ion-doped optical waveguide structure comprises an optical waveguide; the doped region comprises a P-type doped region and an N-type doped region which are arranged on the two sides of the optical waveguide respectively, and the P-type doped region and the N-type doped region are isolated from each other; the electrodes are arranged on the P-type doped regions and the N-type doped regions; the electric signal adjusting circuit comprises a plurality of electric input ends and at least one electric output end, the electric input ends and the electric output ends are connected to the corresponding electrodes respectively, and the electric signal adjusting circuit is used for adjusting the magnitude of electric signals applied to the electrodes.

A semiconductor device includes a substrate structure, a first semiconductor die, a photoelectric conversion element array, a photoelectric conversion driving circuit, a waveguide array, and an optical transmission path. The first semiconductor die is disposed on and electrically connected to the substrate structure, and the semiconductor die has at least one functional circuit. The photoelectric conversion element array is connected to the substrate structure, the photoelectric conversion driving circuit electrically connects the photoelectric conversion element array and the functional circuit of the first semiconductor die, and the photoelectric conversion driving circuit and the functional circuit of the first semiconductor die perform electrical signal transceiving. The waveguide array defines an optical coupling region having a plurality of waveguide ports. The optical transmission path is defined between the waveguide array and the photoelectric conversion element array, and the waveguide array corresponds to and optically couples the photoelectric conversion element array via the optical transmission path.

This invention provides a quantum storage device and a quantum storage method based on an optical resonant cavity. The quantum storage device includes: a light generation module that emits pump light and an optical signal; an electrical pulse generation module that generates an electrical pulse signal corresponding to the optical signal according to a preset storage method; the storage module includes a rare-earth-doped crystal, wherein a first reflective film on a first surface and a second reflective film on a second surface of the rare-earth-doped crystal constitute an optical resonant cavity, with the first and second surfaces forming a preset angle to change the resonant frequency of the optical resonant cavity; an optical waveguide array disposed inside a third surface of the rare-earth-doped crystal; an electrical waveguide array disposed on the third surface and electrically connected to the electrical pulse generation module, and changing the absorption band structure of rare-earth ions through the electrical pulse signal; the optical signal is coupled into the optical resonant cavity through the optical waveguide array, interacts with rare-earth ions within the optical resonant cavity, and excites the population of rare-earth ions to the upper optical energy level to store the optical signal.

This invention discloses an on-chip optical computing chip based on a waveguide array and its design method. The optical computing chip includes a waveguide array composed of several waveguides optically coupled to each other. An input waveguide is provided at the optical input end of the waveguide array, and an output waveguide is provided at the optical output end. The input waveguide receives a first optical signal carrying matrix information for a matrix-vector product operation. The waveguide array modulates the first optical signal in the complex domain, and the output waveguide outputs a modulated second optical signal. The second optical signal is converted into an electrical signal to obtain the matrix-vector product result. This invention reduces the physical size of the computing unit, achieving extremely high computing power density per unit chip area, while reducing the requirements for manufacturing processes and light source stability, which is beneficial for large-scale production and application.

This utility model discloses a phased array radar phase shifter data acquisition and testing system, belonging to the field of microwave and radio frequency technology. The system includes a vector network analyzer, a main control subsystem, a temperature monitoring subsystem, and a waveguide array testing subsystem. This utility model employs a layered, staggered method with equal-length straight and curved waveguides to extract microwave signals, resulting in a compact structure and small overall size. It can be used in conjunction with the device under test (DUT) for environmental adaptability testing and temperature and humidity screening testing, overcoming the problems of large size and high cost of matrix switch box testing equipment. The design of the radio frequency coaxial switch group overcomes the problem of generally low power tolerance in electronic switches. The system has a built-in temperature sensor with temperature protection settings; exceeding the protection temperature triggers a temperature alarm and subsequently power-off protection, ensuring system safety. It can be widely applied to various environmental testing scenarios for radar antenna phase shifters, T / R components, power dividers, etc., and general-purpose modules can be replaced according to the actual testing scenario.

This invention proposes an integrated optical phased array chip based on grating lobe demodulation, belonging to the field of photonic integrated circuit technology. It includes: an optical input terminal, a multimode interferometric beamsplitter, a transmit phase shifter array, a transmit grating antenna array, a receive grating antenna array, a receive phase shifter array, an equal-length waveguide array, a star coupler, and a receive channel. The multimode interferometric beamsplitter, star coupler, transmit and receive phase shifter arrays, a pair of coaxial arrays with mismatched transmit and receive grating antenna arrays, and equal-length waveguide arrays constitute a deeply coupled and indispensable collaboratively designed chip structure, realizing parallel transceiver functionality based on grating lobe demodulation. The proposed integrated optical phased array chip based on grating lobe demodulation demodulates the main lobe and grating lobes to different channels, solving the problem that traditional OPAs cannot utilize grating lobe energy, realizing parallel transceiver ranging based on grating lobe demodulation, reducing control complexity, and improving optical energy utilization efficiency.

A waveguide array is configured to convey ultrasonic soundwaves. The waveguide array includes a plurality of waveguide elements. Each of the waveguide elements defines a proximal end configured to receive the ultrasonic soundwaves produced by the transducer and a distal end opposing the proximal end. A cross-sectional width of each of the waveguide elements is less than a wavelength of the ultrasonic soundwaves. An inward area of the waveguide array at the proximal ends of the waveguide elements is greater than an outward area of the waveguide array at the distal ends of the waveguide elements.

This invention discloses an on-chip integrated beam-splitting polarization-entangled photonic array chip, belonging to the field of integrated quantum mechanics. The chip includes a pump laser input terminal, an on-chip beam-splitting structure, and a Bragg reflection waveguide array. After the pump light is coupled into the chip, it undergoes progressively uniform power distribution through a beam-splitting structure composed of multiple cascaded Y-beam splitters and is injected into multiple Bragg reflection waveguides. The Bragg reflection waveguides are constructed based on AlGaAs / GaAs materials to form a non-ideal quarter-wavelength structure, efficiently generating polarization-entangled photon pairs through a spontaneous parametric down-conversion process. This invention achieves monolithic integration of pump light beam splitting and entangled photon generation, offering advantages such as low loss, uniform splitting ratio, good output consistency, high integration density, and strong compatibility. It is suitable for applications in quantum imaging, quantum communication, and parallel quantum information processing.

An OPA (Optical Phased Array) receiving antenna chip, belonging to the field of optical phased array antenna technology, addresses the problem of low receiving efficiency in existing silicon-based optical phased array antennas. A grating waveguide array layer and a waveguide transmission layer constitute a planar grating receiving and transmission structure. Incident light received by the chip passes through the planar waveguide. The grating waveguide array layer generates periodic refractive index perturbations on the planar waveguide. When the incident light received by the chip passes through the planar waveguide, its first-order diffracted light propagates along the planar waveguide, then through a tapered waveguide into a superlattice waveguide, and finally outputs from the superlattice waveguide. This invention, through its planar grating receiving and transmission structure, enables the chip to efficiently receive incident light and transmit it to the superlattice waveguide output, achieving a 100% duty cycle and significantly improving optical coupling efficiency and received optical power. The superlattice waveguide and adiabatic tapered waveguide structure effectively reduce transmission loss and optical field crosstalk.

A semiconductor device includes a substrate structure, a first semiconductor chip, an optoelectronic conversion element array, an optoelectronic driving circuit, a waveguide array, and an optical transmission path. The first semiconductor chip is arranged at and electrically connected to the substrate structure, and has a functional circuit. The optoelectronic conversion element array is connected to the substrate structure, and the optoelectronic driving circuit is electrically connected to the optoelectronic conversion element array and the functional circuit of the first semiconductor chip. The optoelectronic driving circuit performs electrical signal transmission and reception with the functional circuit of the first semiconductor chip. The waveguide array defines an optical coupling region, which includes multiple waveguide ports. The optical transmission path is defined between the waveguide array and the optoelectronic conversion element array, and the waveguide array corresponds to and optically couples to the optoelectronic conversion element array by the optical transmission path.