43 results about "Integrated optics" patented technology

This invention relates to the field of laser technology, specifically to a three-optical-path integrated PDH frequency stabilization system. It includes a three-laser input module, an integrated optical module, and three independent servo control modules. The three-laser input module provides three laser beams to be stabilized. The integrated optical module integrates the functions of the three independent optical paths onto a single substrate, achieving separation of transmission, beam combining, and reflected light. Simultaneously, it receives the three reflected beams and converts them into three electrical PDH error signals. The three independent servo control modules receive the three error signals respectively, process them, and generate feedback control signals, which are fed back to the corresponding three lasers to complete three independent frequency-locking loops. This invention significantly reduces the system's size and cost. The integrated optical module achieves compact integration of the three optical paths, improving system stability and anti-interference capabilities, reducing debugging difficulty, and ensuring system consistency.

The application discloses a design method of an integrated multi-mode curved optical waveguide and the integrated multi-mode curved optical waveguide and belongs to the technical field of integrated optics. Aiming at the problem that a traditional multi-mode curved waveguide is difficult to consider low loss and low crosstalk at a compact size, a waveguide model formed by cascading multiple variable-width generalized Euler spiral curve elements is constructed. Through an iterative optimization algorithm based on mode field analysis, the curvature radius and the waveguide width of each curve element are controlled in double degrees of freedom to obtain optimal geometric parameters with the minimum full-mode loss as the target. The waveguide structure breaks through the limitation of the traditional fixed-width design, realizes low-loss and low-crosstalk transmission of multi-mode signals at a very small bending radius, significantly improves the tolerance of the device to manufacturing process deviation, and is suitable for a high-density on-chip optical interconnection system.

This invention discloses an alcohol detection chip and detection method based on a cascaded dual-ring resonator with dual-gradient curvature, belonging to the field of optical micro-nano sensing and integrated optics technology. This invention aims to solve the technical problems of low sensitivity, poor resolution, complex spectral analysis, and weak environmental adaptability in traditional micro-ring sensing devices, as well as the low detection accuracy of existing miniaturized equipment. The chip uses a silicon-based substrate and includes input and output waveguides, cascaded dual micro-rings, a coupling region, and two sets of miniature heating electrodes. The micro-rings employ dual-gradient waveguides with circular and Euler-circular curved structures for the inner and outer curves, respectively. The cascaded dual rings create a vernier effect, broadening the free spectral range. By adjusting the resonant wavelength through the heating electrodes, scanning detection is completed in the characteristic alcohol band around 1400nm, and high-precision alcohol measurement is achieved by combining transmission spectroscopy. This invention has a compact structure and low cost, and is suitable for rapid quantitative detection of alcohol in industrial monitoring, vehicle safety, food safety, and other scenarios.

The application discloses an integrated hydroxyapatite photodisruption device based on vortex vector light field regulation technology, which utilizes vortex vector light field regulation technology and vector diffraction theory principles to realize efficient decomposition of hydroxyapatite in emergency, meets high requirements for speed and precision in surgery, avoids sample heating, and reduces operation complexity and danger. Compared with the prior art, the device is small in size, convenient to flexibly use in medical and cosmetic surgery, fills the blank in the key field, and adopts integrated optical technology to ensure the precision and stability of the system, and is suitable for large-scale application.

This application relates to a method and device for detecting appearance defects using an integrated array optical system, belonging to the field of product appearance defect detection technology. It includes a housing, a lens holder, and a main control module. The lens holder forms a detection chamber, and its inner wall is equipped with multiple arrayed lenses, which, together with a light source cover and a light guide, constitute a uniform reflection illumination system. During detection, the object to be inspected is placed in the detection chamber, and multiple lenses simultaneously acquire multi-angle appearance images of its periphery, bottom, and top. These images are then transmitted to a host computer via the main control module for defect comparison. Through the array lenses and integrated optical design, it can achieve blind-spot-free imaging in a confined space, effectively eliminating specular reflections and shadow interference, and significantly improving the ability to acquire defect features of complex surfaces such as irregular three-dimensional surfaces and inner walls. It also possesses modular customization capabilities, allowing for rapid adaptation to various parts such as lead screws, inverters, and shock absorbers. It offers high detection efficiency and good stability, making it suitable for automated mass production.

Silicon photonics technologies adds integrated optics functionality to CMOS integrated circuits thereby leveraging high volume manufacturing. Independent of geometry or technology these silicon photonic devices require packaging with single mode optical fibers to interface to the optical network and / or co-packaging with active semiconductor devices, discrete microoptoelectromechanical systems (MOEMS)s or monolithically integrated MOEMS. Stringent performance constraints and minimizing manufacturing costs / times are consistent demands on such photonic circuits. Accordingly, there is a demand for low-cost and low-loss optical coupling technologies for packaging that can easily be scaled for mass production that overcome limitations in the prior art. The inventors have established design methodologies, packaging schemes and component designs that leverage automated passive assembly techniques for speed / cost in combination with directly written optical interconnects that allow for offsetting the losses that would arise from the manufacturing tolerances of these passive assembly techniques.

This application relates to the field of quantum sensing technology and proposes an optically coated alkali metal gas cell structure, comprising: a glass shell, including a first light-transmitting surface, a second light-transmitting surface, a third light-transmitting surface, and a fourth light-transmitting surface; an optical beam splitter, disposed on the first light-transmitting surface, for splitting the incident laser into a first beam and a second beam; a first optical reflective film, disposed on the second light-transmitting surface; a second optical reflective film, disposed on the third light-transmitting surface; and an optical anti-reflection film, disposed on the fourth light-transmitting surface. The first beam, after being reflected by the optical beam splitter, is emitted as monitoring light, and the second beam, after being transmitted through the optical beam splitter, is reflected sequentially by the first and second optical reflective films before emitting light from the fourth light-transmitting surface. By integrating the optical beam splitter, reflective film, and anti-reflection film, the function of a polarizing beam splitter prism is integrated with the alkali metal gas cell, which not only improves the probe integration and reduces the overall volume but also effectively extends the propagation path of the pump light within the gas cell.

The present invention provides an integrated optical chip, an array, and a method for cutting the same. The chip includes a functional unit, an optical input unit having N cascaded layers, an optical output unit having M cascaded layers, a plurality of optical input transmission channels, a plurality of optical output transmission channels, and lines to be cut. The optical input unit having N cascaded layers includes an nth optical input subunit connected to the optical input port of the functional unit via an optical input transmission channel, and a first optical input subunit. The optical output unit having M cascaded layers includes an mth optical output subunit connected to the optical input port of the functional unit via an optical output transmission channel, and a first optical output subunit. The chip is selectively cut and used to form different first integrated optical devices and second integrated optical devices.

This application discloses an optical sensing structure and an optical detector, belonging to the field of integrated optical sensing technology. It aims to achieve on-chip integrated construction and efficient electro-optical control of high-order singular surfaces to improve the signal response intensity and weak signal detection limit of optical sensing. The optical sensing structure includes an optical waveguide, multiple micro-ring resonators, a circular aperture array, and multiple sets of metal electrodes. The optical waveguide and multiple micro-ring resonators are formed by etching optically functional thin films with electro-optic effects. The multiple micro-ring resonators are arranged sequentially along the extension direction of the optical waveguide and are evanescently coupled to it. The circular aperture array is disposed at the end of the optical waveguide to reflect the transmitted optical signal, forming a closed optical loop. Multiple sets of metal electrodes are respectively arranged in pairs on both sides of the optical waveguide and segmented along the waveguide, corresponding to the optical waveguide regions between two adjacent micro-ring resonators and between the micro-ring resonators and the circular aperture array away from the input end of the optical waveguide.

Systems and methods are provided for an open path gas detection system having a receiver with an optical sensor configured to continuously capture optical image data. The field of view of the optical sensor can include the path of a beam of focused light received by a light sensor of the receiver. The receiver can be configured to receive and temporarily store the optical image data in a memory buffer, and then transfer the optical image data to a persistent memory area upon receipt of a transfer command. A transfer command may be provided in various situations, such as when requested by a receiver, when a predefined object of interest is identified in the optical image data, or when a blockage occurs and light sensor is no longer receiving the beam of focused light.

The utility model discloses a kind of electrolytic cell pipeline impurity real-time detection systems based on endoscope, including controlled in pipeline movement endoscope module, pattern transmission processing system, system linkage module;Endoscope module includes integrated optical module, mechanical drive module, it moves in pipeline and visualizes collection to impurity in pipeline;Pattern transmission processing system includes control cable, control processing system, control cable includes signal cable, optical fiber image transmission bundle, control cable one end is connected with endoscope module, control processing system is based on algorithm real-time analysis impurity characteristic to the image transmission of integrated optical module;System linkage module triggers hierarchical early warning based on impurity detection result. With hays alloy C276 shell, sapphire protective lens and gradient composite coating, combined with cooling runner design, so that system can be stable operation under high temperature, high pressure, strong corrosion environment, probe continuous working life ≥ 80,000 hours, more than 5 times than traditional endoscope.

The application belongs to the technical field of integrated optical devices, and discloses an amorphous silicon-thick film lithium niobate hybrid integrated bending converter and a preparation method thereof. The thick film lithium niobate layer of the device is photoetched to form a thick film lithium niobate end face coupler, a first thick film lithium niobate waveguide and a second thick film lithium niobate waveguide. The amorphous silicon layer comprises a first and a second amorphous silicon-lithium niobate wedge waveguide optical mode conversion structure and an amorphous silicon bending waveguide. The optical signal transmitted in the first thick film lithium niobate waveguide can be transmitted to the amorphous silicon bending waveguide and finally transmitted to the second thick film lithium niobate waveguide, so that the bending conversion output is realized. The amorphous silicon functional component is introduced between the two thick film lithium niobate waveguides, so that the problems of weak optical binding capacity of the thick film lithium niobate bending waveguide and large bending radius of the waveguide are effectively solved.

The application relates to a high-beam-expanding-ratio integrated optical ferrule and optical interconnection assembly based on an integrated injection molding process. A shell of a ferrule body is integrally formed by a transparent optical material; an optical fiber access positioning structure, a first 45-degree reflecting surface, a second 45-degree reflecting surface and an aspherical lens array at an out-light end are arranged in the ferrule body; the optical fiber access positioning structure is used for positioning and fixing an incident optical fiber, so that an end face of the incident optical fiber is located at a preset light-in position; the first 45-degree reflecting surface is used for performing first reflection and turning of a light beam emitted by the optical fiber; the second 45-degree reflecting surface is used for performing second reflection and turning of the light beam after the first reflection and turning, so that the light beam propagates towards the aspherical lens array; and the aspherical lens array is used for receiving divergent light after the double-stage reflection and converting the divergent light into collimated light or expanded parallel light output. The application realizes high-beam-expanding-ratio collimated light output of the light beam by integrally injecting and integrating the double-stage 45-degree reflecting surface and the aspherical lens array, so that the effects of simplifying the process, reducing the cost and improving optical interconnection tolerance and connection reliability are achieved.

This invention proposes an image reconstruction method for physical degradation sensing of planar diffraction lens arrays. It utilizes a deep learning network integrating an optical degradation sensing mechanism to optimize sub-aperture feature fusion and weight allocation strategies, improving the imaging contrast and detail recovery accuracy of planar diffraction lens arrays. The method includes: acquiring a sequence of monochromatic sub-aperture images of the planar diffraction lens array carrying spatially non-stationary blur and diffraction degradation features; implicitly aligning the feature responses of each sub-aperture using an edge enhancement feature alignment module; constructing a pseudo-array feature representation; introducing a physically prior-guided weight modulation strategy during adaptive grouping upsampling, learning the distribution law of spatially heterogeneous point spread functions through degradation sensing units, and spatially adaptively modulating the feature contribution; and finally reconstructing a high-quality grayscale image. This invention significantly suppresses the diffraction blur and low contrast phenomena unique to planar diffraction lenses, better sensing optical degradation distribution and preserving high-frequency details in the image. It also provides a new approach for subsequent joint reconstruction research of arrayed lightweight imaging systems.

The application discloses a two-dimensional omnidirectional edge detection phase correction automatic optimization method based on a double-layer titanium dioxide metasurface, and belongs to the technical field of metasurface light field regulation and optical image processing. In view of the problems of unstable edge enhancement effect, insufficient adaptability and evaluation susceptible to local abnormalities of an existing scheme, a candidate model set containing an original scheme and various radial phase correction schemes is established on a basic radial phase distribution, the original scheme is used to determine main edge reference positions in multiple fixed directions, each candidate model extracts an edge response near the position, an average signal-to-noise ratio and a full width at half maximum are calculated in multiple directions, and then a unified comprehensive score is calculated, and the candidate model with the highest score and parameters thereof are output as an optimal scheme. The method can be used for high-speed low-power optical analog edge detection and integrated optical image processing, and improves the adaptability and robustness of edge detection.

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 application discloses a wavelength selective switch, including an optical fiber module, an optical chipset, and an optical switching module. The optical chipset includes one or more optical chips. The optical fiber module emits an incident light beam into the optical chipset. The incident light beam is split into multiple dispersive beams with different wavelengths within the optical chipset. These dispersive beams exit from different positions within the optical chipset and are emitted into the optical switching module. After reflection by the optical switching module, they return to the optical chipset. The multiple dispersive beams are then combined into a single signal beam within the optical chipset. This signal beam exits the optical chipset and returns to the optical fiber module. The technical solution of this application significantly simplifies the coupling and adjustment of optical lenses, eliminates inherent aberrations, and reduces product size. During manufacturing, based on the characteristics of integrated optics, it is suitable for large-scale production, resulting in more efficient capacity replication and ultimately enabling low-cost reconfigurable optical networks to extend from the backbone network to the aggregation layer and data centers.

The application claims a kind of optical convolution calculation structure and calculation method based on micro-ring resonator, belong to photonic computing and integrated optics technical field.For the high-dimensional calculation of optical convolution neural network (Optical Convolutional Neural Network, OCNN), the number of basic units, chip size is squared, the problems such as OCNN calculation potential is limited, chip manufacturing complexity is improved, an optical convolution calculation structure based on single micro-ring resonator is proposed.Combining the structure with optical or electronic fully connected layer can realize complete CNN system, so as to perform complex tasks.The optical convolution calculation structure is simple and easy to expand, when increasing the dimension of calculation matrix, the chip size growth and calculation dimension are linearly related, which significantly improves the computing capacity of integrated OCNN.

The application discloses a three-dimensional waveguide cross structure, and relates to the technical field of integrated optics and silicon photonics, and comprises a buried oxygen layer, a first material waveguide layer, a first silicon oxide cover layer, a second material waveguide layer and a second silicon oxide cover layer; the effective coupling length of the projection overlapping area of the first material waveguide layer on the second material waveguide layer satisfies the formula: wherein, L represents the effective coupling length, represents a coupling wavelength, and the value range of n is 1 to 2n, wherein n is an integer, and the constant is less than 1. According to the application, the position of the first material waveguide layer relative to the second material waveguide layer is adjusted, so that the power coupling of the cross port of the three-dimensional waveguide cross structure completes an integer multiple of the coupling period in propagation, thereby reducing the loss and crosstalk caused by coupling enhancement.

This invention belongs to the field of integrated optical device technology, specifically relating to a microring resonator and its fabrication method. The device comprises: a substrate; a ring waveguide disposed at the center of the substrate; a U-shaped waveguide disposed on the substrate, wherein the U-shaped waveguide is formed by two straight waveguide segments and a semi-circular arc waveguide connected end-to-end, with the ring waveguide positioned between the two straight waveguide segments to form coupling; and an etched aperture located at the center of the semi-circular arc waveguide; an input waveguide disposed on the substrate and connected to one straight waveguide segment; and an output waveguide disposed on the substrate and connected to another straight waveguide segment. This invention provides controllable loss by introducing an etched aperture in the U-shaped waveguide, achieving coupling interference between discrete and continuous modes to generate asymmetric Fano resonance. By adjusting the waveguide length and the aperture size, high extinction ratio, large slope, or uniform resonance can be achieved at the target wavelength. This device has a simple structure, is easy to manufacture, is compatible with silicon photonics processes, and is suitable for high-performance photonic integrated systems.

The present application provides a package structure integrating an optical element and a photosensitive device, and a manufacturing method therefor. The package structure comprises a photosensitive device and an optical element. The photosensitive device has a first surface. The optical element has a fourth surface, the fourth surface being disposed face-to-face with the first surface of the photosensitive device. The first surface of the photosensitive device is bonded to the fourth surface of the optical element by means of a transient liquid phase bonding layer.

The application discloses a novel hydroxyapatite photodisintegration device based on vortex vector light field regulation technology, which utilizes vortex vector light field regulation technology and vector diffraction theory principles to realize efficient decomposition of hydroxyapatite in emergency, meets high requirements for speed and precision in surgery, avoids sample heating, and reduces operation complexity and danger. Compared with the prior art, the device has simple structure, is convenient to flexibly use in medical and cosmetic surgery, fills the blank in this key field, and adopts integrated optical technology to ensure the precision and stability of the system, and is suitable for large-scale application.

The application discloses a waveguide bending structure based on a subwavelength Micallan lens and belongs to the technical field of integrated optics, which comprises an input port, an output port, a subwavelength Micallan lens, a first subwavelength taper coupler, a second subwavelength taper coupler, an insulator cladding, an insulating layer and a substrate layer; the input port and the output port are symmetric about the center of the subwavelength Micallan lens; the first subwavelength taper coupler, the subwavelength Micallan lens and the second subwavelength taper coupler are all composed of a periodic subwavelength grating structure; the subwavelength Micallan lens is composed of basic lens units arranged periodically with a large duty cycle on both sides and a small duty cycle in the middle, and the effective refractive index distribution thereof satisfies the reciprocal function of the hyperbolic cosine; the structure can realize low-loss and high-isolation optical path bending in a short propagation distance, break through the physical restriction between the bending radius and the bending loss, and is suitable for photonic integrated circuits and optical information processing chips.

The application discloses a method for preparing a dielectric crystal surface periodic structure at room temperature by combining femtosecond laser with ion implantation, and belongs to the technical field of integrated optics. The method comprises the following steps: bombarding a dielectric crystal surface by metal ions to form an implantation layer; focusing femtosecond laser on the surface of the implantation layer of the dielectric crystal to lower the position of the dielectric crystal; and moving the position of the dielectric crystal to engrave lines on the surface of the implantation layer to obtain a surface periodic structure. The method realizes preparation of a dielectric crystal material surface periodic structure at room temperature, and is simple in operation and can realize large-scale preparation and popularization and application of a surface periodic structure.

Silicon photonics technologies add integrated optics functionality to CMOS integrated circuits thereby leveraging high volume manufacturing. Independent of geometry or technology these silicon photonic devices require packaging with single mode optical fibers to interface to the optical network and / or co-packaging with active semiconductor devices, discrete microoptoelectromechanical systems (MOEMS)s or monolithically integrated MOEMS. Stringent performance constraints and minimizing manufacturing costs / times are consistent demands on such photonic circuits. Accordingly, there is a demand for low-cost and low-loss optical coupling technologies for packaging that can easily be scaled for mass production that overcome limitations in the prior art. The inventors have established design methodologies, packaging schemes and component designs that leverage automated passive assembly techniques for speed / cost in combination with directly written optical interconnects that allow for offsetting the losses that would arise from the manufacturing tolerances of these passive assembly techniques.

Optical elements that efficiently propagate x-ray radiation over a desired energy range and reject radiation outside the desired energy range are presented herein. In one aspect, one or more optical elements of an x-ray based system include an integrated optical filter including one or more material layers that absorb radiation having energy outside the desired energy band. In general, the integrated filter improves the optical performance of an x-ray based system by suppressing reflectivity within infrared (IR), visible (vis), ultraviolet (UV), extreme ultraviolet (EUV) portions of the spectrum, or any other undesired wavelength region. In a further aspect, one or more diffusion barrier layers prevent degradation of the integrated optical filter, prevent diffusion between the integrated optical filter and other material layers, or both. In some embodiments, the thickness of one or more material layers of an integrated optical filter vary over the spatial area of the filter.

This application provides a packaging structure integrating an optical element and a photosensitive device, and a method for fabricating the same. The packaging structure includes a photosensitive device and an optical element. The photosensitive device has a first surface. The optical element has a fourth surface, which is disposed face-to-face with the first surface of the photosensitive device. The first surface of the photosensitive device is bonded to the fourth surface of the optical element via a transient liquid phase bonding layer. In some embodiments, the packaging structure further includes a spacer. The spacer is annular and has a first end and a second end that are opposite to and far apart from each other. The first end is adjacent to the fourth surface of the optical element, and the second end is adjacent to the first surface of the photosensitive device. The first end of the spacer is bonded to the fourth surface of the optical element via a first transient liquid phase bonding layer. The second end of the spacer is bonded to the first surface of the photosensitive device via a second transient liquid phase bonding layer. The photosensitive device, the optical element, and the spacer enclose a cavity.

The application provides a nanoimprint-based blazed grating array structure and a preparation method and application thereof. The application adopts the nanoimprint technology to prepare a right-angle grating array structure on an elastic supporting substrate, forms an elastic body imprint composite template; then the nanoimprint technology is used to copy the right-angle grating array structure on the elastic body composite template into an imprint adhesive layer on a quartz glass substrate, the dry etching technology is used to copy the right-angle grating array structure into a sacrifice layer on the quartz glass substrate, then the vacuum coating technology and the inclination angle etching technology are combined, and a blazed grating array structure with uniform morphology and stable mechanical performance can be simply and efficiently obtained. The preparation method has the advantages of simple operation, low cost and easy mass production, the blazed angle of the blazed grating can be simply and efficiently controlled by adjusting the process parameters in the preparation process, and the method has a wide application prospect in the fields of optical elements and integrated optics.

This invention discloses a multimodal integrated optical microcavity, belonging to the field of integrated photonic device technology. The multimodal integrated optical microcavity includes a first microcavity structure and a second microcavity structure coupled in a vertical direction. The first and second microcavity structures are made of different materials, and by adjusting the waveguide thickness and width, the two microcavities have approximately the same free spectral range within a preset operating wavelength band. Because the two materials have different thermo-optic coefficients, differential resonant frequency shifts can be naturally generated during thermal tuning of the bilayer microcavity. Combined with the vernier coupling effect between the microcavities, a Moore acceleration effect is formed, thereby achieving a wide range of adjustment of the microcavity's dispersion characteristics. By controlling the thermal excitation conditions, switching between normal dispersion and anomalous dispersion can be achieved, enabling a single device to support multiple optical operating modes. This invention has a simple structure, stable control, and strong process compatibility, making it suitable for reconfigurable integrated photonic systems.

This application provides an angular velocity detection system and method based on weak measurement, which can be applied to the fields of quantum sensing technology and optical gyroscope technology. The system includes: a laser emitting initial light; a pre-selection module adjusting the phase of two parts of the initial light; a first optical resonant cavity transmitting the first path light along a counterclockwise path; a second optical resonant cavity transmitting the second path light along a clockwise path; a post-selection module coupling the first path light and the first part of the second path light to obtain a first interference light; a detection module detecting the first interference light to obtain a first light intensity; a processor obtaining a linear coefficient based on a predetermined phase, the initial light intensity of the initial light, and a transmission coefficient; and obtaining the rotational angular velocity based on the first light intensity, the linear coefficient, and the predetermined phase. This system uses an optical microcavity as the sensitive unit of the gyroscope, enhancing the sensing performance of the integrated optical gyroscope through weak measurement technology and improving the detection accuracy of the rotational angular velocity.