202 results about "Optical coupling" patented technology

A wavelength beam combining device includes: a plurality of laser light sources configured to emit a plurality of laser beams in a first direction and having mutually different peak wavelengths and central axes arranged in a second direction intersecting the first direction; a first diffraction grating disposed at a position where the plurality of laser beams are received, the first diffraction grating being configured to diffract the plurality of laser beams in different directions according to wavelengths of the laser beams to cause the diffracted laser beams to enter the second diffraction grating; a second diffraction grating configured to diffract the plurality of laser beams diffracted by the first diffraction grating to form a wavelength-combined beam, and to direct the wavelength-combined beam in the first direction; and an optical coupling unit configured to couple the wavelength-combined beam to an optical transmission fiber and to be movable in the second direction.

Described herein are systems and techniques for providing photonic devices having efficient optical coupling between waveguides and optical fibers. The photonic devices comprise an edge coupler disposed within a cavity of a photonic integrated circuit (PIC) and a pluggable assembly removably coupled with the edge coupler. The PIC includes a spot size converter optically coupled to a waveguide to expand light received from the waveguide prior to exiting the PIC.

This invention relates to lidar, specifically to a high-precision self-mixing pulse modulation semiconductor lidar, comprising: a driving circuit that drives a semiconductor laser to emit pulsed laser light; an optical amplification unit that amplifies the power of the pulsed laser light and transmits it to an optical coupling unit; an optical coupling unit that collimates or focuses the amplified pulsed laser light onto the target and backcouples the reflected or scattered light from the target to the resonant cavity of the semiconductor laser, where it undergoes self-mixing interference with the intrinsic laser light within the cavity to form a self-mixing lidar signal; and a signal processing unit that conditions and processes the self-mixing lidar signal, outputting the velocity and range information of the target. The technical solution provided by this invention effectively overcomes the shortcomings of existing technologies, such as poor low-speed detection capability, high external frequency shifting loss and cost, and poor overall adaptability.

A surface-emitting laser device and a method for manufacturing and operating the same are disclosed. The surface-emitting laser device comprises an active layer, a semiconductor layer optically coupled to the active layer, and a photonic crystal structure disposed within the semiconductor layer. The device further comprises a laser region and a detector region. The laser region includes a first set of electrical contacts located on opposite sides of the active layer and the semiconductor layer, and generates the output field of the device. The detector region includes a second set of electrical contacts located on opposite sides of the active layer and the semiconductor layer, and located outside the first laser region. The detector region is configured to generate an output current proportional to the output field. The presence of the detector region within the device improves the structure and power monitoring techniques compared to the prior art.

This invention belongs to the field of optical component mounting technology, specifically a real-time coaxial optical coupling loss detection and alignment system for prisms and lens arrays. It includes an automatic loading and unloading module for automatically loading the substrate, prisms, and lens arrays, and automatically sorting and unloading qualified and unqualified products. By adopting a technical solution that uses the real-time coaxial optical coupling loss detection value as the sole criterion for final alignment of the lens array, combined with a graded alignment strategy of visual coarse alignment and coaxial optical fine alignment, it solves the common industry pain point of existing pure visual alignment and passive alignment technologies that separate physical dimensional accuracy from optical performance. This results in the inability to compensate for manufacturing errors such as uneven refractive index and surface flatness deviations within optical components, leading to substandard optical performance despite meeting physical accuracy standards and low yield rates in mass production. By using dimensional and angular tolerances only as auxiliary constraints, it directly locks the global minimum coupling loss point, improving the consistency and stability of the product's optical performance.

The present application relates to the technical field of optical coupling, and particularly relates to a constant current optical coupling isolation circuit based on a depletion mode MOSFET; through the cooperation of a reverse protection module, a self-bias constant current module and a response enhancement module, super-wide voltage input, low power consumption and high-speed dynamic response are realized in the circuit, to a certain extent, the inherent technical contradiction that the traditional resistance current limiting scheme cannot simultaneously consider reliable conduction and low power consumption under wide voltage, and the slow response of high CTR optical coupling is solved, the structure is extremely simple and the reliability is high, a self-bias constant current source based on a depletion mode MOSFET is adopted, only one resistor is needed to realize relatively accurate constant current output in a super-wide input range of 9.6V to 400V, replacing the current limiting resistor with huge power consumption under high voltage or the active constant current source with complex circuit in the traditional scheme, and the power consumption under high voltage application is reduced; the technical problem that the existing resistance current limiting scheme is limited in widening the input voltage range of the optical coupling is solved.

This application discloses a liquid crystal glass defect detection device and control method. The detection device includes a transmission mechanism, a gantry, and an optical imaging assembly. Specifically, the camera angle is adjusted by the imaging adjustment assembly to satisfy Scherm's law, solving the depth-of-field limitation of the inclined plane and achieving single-shot full-clear imaging. In the illumination system, the side-entry optical coupling assembly uses a linear drive and a floating suspension mechanism to drive the optical coupling head, which includes a rigid air-float block and a silicone pad. The air-float block forms a fixed-distance air film, and the silicone pad flexibly adheres, achieving frictionless floating relative to the side surface of the glass. This liquid crystal glass defect detection device effectively solves the coupling difficulties and collision damage caused by fluctuations in the glass edge position during high-speed transmission, ensuring efficient and stable light coupling to enhance the contrast of internal defects and guaranteeing high-precision and high-efficiency online detection.

A package structure and a package method are provided. The package structure includes: a photonic interposer configured to be integrated with a photonic device, where a first surface of the photonic interposer includes an optical coupling area; a chip bonded on the first surface and arranged spaced apart from the optical coupling area, where the chip is electrically connected to the photonic interposer; a protective ring located on the first surface and surrounding the optical coupling area, where the protective ring includes a cavity exposing the optical coupling area; and a molding layer located on the first surface, on a side of the chip, and outside of the cavity, wherein the molding layer covers side walls of the chip and outer walls of the protective ring.

Described herein are systems and techniques for providing photonic devices having efficient optical coupling between waveguides. The photonic devices comprise a glass substrate having glass waveguides and a photonic integrated circuit (PIC) having PIC waveguides evanescently coupled with the glass waveguides. The waveguides may have recesses disposed between adjacent waveguides to allow for excess adhesive to be squeezed out. The PIC may have a trench exposing the waveguide layer of the PIC, thus reducing the gap between the PIC waveguides and the glass waveguides when coupled.

The application relates to an actively detected power state detection system and method, which comprises at least two groups of symmetrically arranged triode modules, an optical coupling isolation module and a MOS tube driving module; the MOS tube driving module is connected with a signal input end through double channels and is used for receiving active monitoring electric signals; when the double channels of each MOS tube driving module simultaneously receive the same active monitoring electric signals, the MOS tube driving module converts the active monitoring electric signals into detection pulses and sends the detection pulses to the optical coupling isolation module to conduct short-time detection on the power state; the optical coupling isolation module is used for isolating the MOS tube driving module from the measured power supply and transmitting the detection pulses from the MOS tube driving module; only one group of optical coupling isolation modules can be turned on at the same time in the system; the triode module is connected with a signal output end through double channels and is used for acquiring and outputting the power state to be measured. Compared with the prior art, the application can actively control the power state detection and conduct self-detection.

To improve coupling efficiency when coupling wavelength-coupled light beams with an optical transmission fiber. A wavelength beam coupling device couples a plurality of laser beams emitted from a laser light source and having mutually different peak wavelengths, and the central axes of the light beams emitted in a first direction are arranged in a second direction intersecting the first direction. The wavelength beam coupling device includes: first and second diffraction gratings, the first diffraction grating being disposed at a position receiving the plurality of laser beams and causing the plurality of laser beams to be diffracted in different directions according to wavelengths to be incident on the second diffraction grating, the second diffraction grating further diffracting the plurality of laser beams diffracted by the first diffraction grating to form wavelength-coupled light beams, and the wavelength-coupled light beams being emitted in the first direction; and an optical coupling unit coupling the wavelength-coupled light beams with the optical transmission fiber and configured to be movable in the second direction.

This invention relates to the field of nuclear radiation detection technology and discloses a two-dimensional array detector for measuring the spatial distribution of neutrons and photons. The detector body includes a detector body comprising a detection unit layer, a light guide layer, and a readout layer. The detection unit layer, light guide layer, and readout layer are vertically stacked sequentially from top to bottom to form a three-layer modular integrated structure. The layers are precisely mechanically aligned and optically coupled without air gaps. The light guide layer is composed of an array of multiple optical fibers. The detection unit layer is composed of an array of multiple detection units, with each detection unit corresponding to one optical fiber. This invention offers advantages such as modularity, high spatial resolution, and real-time signal processing. It can be applied to the measurement of the spatial distribution of neutrons and photons in the field of boron neutron capture therapy, meeting the practical needs of online real-time measurement of the spatial distribution of the neutron-photon mixed radiation field and accurate verification of the treatment irradiation field dose in boron neutron capture therapy.

The invention relates to a micro-ring modulation light engine based on glass substrate packaging and a manufacturing method thereof, and the light engine comprises a glass substrate which is provided with a first plate surface and a second plate surface; the micro-ring modulation optical chip and the electric chip are respectively mounted on the first plate surface through a first connecting structure, and the optical chip and the electric chip are electrically connected through an electric interconnection structure formed in the glass substrate; the engine substrate is electrically connected with the second board surface through a second connecting structure, so that the micro-ring modulation optical chip and the electric chip are electrically communicated with an external circuit; and the optical coupling element is optically coupled to the optical port of the optical chip. In the invention, the glass substrate is used as an adapter plate to connect the photoelectric chip and the engine substrate, so that the micro-ring modulation optical chip and the electric chip can be integrated on the glass substrate in a high-density manner through a packaging technology, and the problems of high I / O quantity and high-bandwidth electric interconnection between the micro-ring modulation optical chip and the driving chip can be well solved; the integration level and the photoelectron interconnection density which are far higher than those of a traditional packaging scheme are achieved; through high-density integration, extremely high bandwidth density is realized in an extremely small packaging size, and dual requirements of a CPO / NPO optical engine on extreme performance and compact space occupation can be met.

An optical-fiber holding component according to the present disclosure is disposed inside a ferrule and holds a plurality of optical fibers, the optical-fiber holding component comprising: an outer surface including a first end surface and a second end surface that are arranged in a first direction; a plurality of through-holes that penetrates from the first end surface to the second end surface in the first direction and are arranged side by side in a second direction crossing the first direction; and at least one air discharge hole that extends from the outer surface so as to cross the plurality of through-holes.

The application discloses a kind of synthetic leather preparation methods with perspective superimposed type light temperature double response effect, comprising the following steps: high transparent ultraviolet light variable surface material slurry is scraped on release paper, and transparent light variable surface layer is formed by drying;Color temperature change medium slurry is scraped on transparent light variable surface layer, and color temperature change layer is formed by drying;Adhesive bottom layer slurry is scraped on color temperature change layer, bottom layer is formed in semi-dry state, and is adhered with microfiber base material, after drying and curing, release paper is stripped, and synthetic leather is obtained;Transparent light variable surface layer allows most visible light to pass through and discolor under ultraviolet light irradiation, color temperature change layer has initial undertone and discolors when temperature changes, and the two superimposed realize light temperature double response dynamic visual effect.By constructing the optical coupling structure of high transparent light variable surface layer and color temperature change layer, four kinds of certainty, designable visual state of synthetic leather under different light and temperature environment are realized, thereby creating unprecedented dynamic interactive experience and decoration function of synthetic leather.

The present invention provides an optical component for a charged particle-optical device. The device is configured to project one or more charged particle beams towards a sample. The optical component is configured to receive optical radiation from an external waveguide and to direct the optical radiation towards a sample. The optical component comprises a photonic element and a coupling element. The photonic element is configured to project optical radiation towards the sample. The coupling element is configured to optically couple an external waveguide to the photonic element, the coupling element comprising two facets that are mutually angled and an optical path between the two facets.

A device includes a photonic layer that includes a waveguide and a grating coupler, wherein the waveguide is optically coupled to the grating coupler; an interconnect structure over the photonic layer; an electronic die bonded to the interconnect structure; and a support over the electronic die, wherein the support includes a metalens, wherein the metalens is optically coupled to the grating coupler.

This application discloses an optical interconnect system and signal transmission method based on an RC Micro-LED array for use in signal transmission systems. The system includes an optical emitting module, an optical receiving module, an optical path, an optical coupling module, and an optical decoupling module. The optical emitting module outputs a light source control signal based on input data through a signal modulation module. The light source module uses multiple RC Micro-LED light-emitting units to output optical signals. The optical coupling module couples the optical signals into the input optical path for transmission. The optical decoupling module decouples the signals. The optical receiving module acquires the optical signals through a photodetector and converts them into electrical signals. The demodulation module demodulates the electrical signals, and the data processing module outputs the restored data. This application enables low-power, high-bandwidth, and high-speed optical interconnect communication.

A modulated laser is described, comprising a laser (30) optically coupled to a modulator (50), the modulator (50) having an intrinsic region (52) comprising: a multi-quantum-well material (41); a field control layer (42) having a doping density to enhance the electric field in the multi-quantum-well material; and a collection layer (43) having a band gap higher than that of the multi-quantum-well material (41). Combining the field control layer and the collection layer in the intrinsic region of the modulator of the modulated laser eliminates the need for a trade-off between high speed and low external bias in the modulated laser.

The application discloses a kind of thermally induced deformation regulation and control silicon optical chip packaging methods, belong to semiconductor packaging and optoelectronic communication technical field.It includes: obtaining the packaging substrate including flexible compensation area, rigid fixed area and thermal isolation groove;Heating electrode array and double material strain layer are set in flexible compensation area, and temperature sensor is set in rigid fixed area;Silicon optical chip is fixed to the surface of rigid fixed area, and preset bias voltage is input to heating electrode array, so that flexible compensation area generates initial bending deformation state;In the initial bending deformation state, optical fiber assembly is solidified and connected to the end of flexible compensation area, and initial optical coupling link is constructed.The application obtains real-time temperature by temperature sensor, dynamically adjusts driving voltage to change the curvature of flexible compensation area, and drives optical fiber assembly to generate alignment displacement.Active thermal deformation feedback adjustment means is used, which can effectively offset the coupling offset caused by temperature drift and improve the stability of optical coupling link.

This application relates to the field of liquid crystal display technology, specifically to a reflective liquid crystal display panel and its preparation method, and a reflective liquid crystal display device. The reflective liquid crystal display panel includes a first substrate, a liquid crystal layer, and a second substrate stacked sequentially. The raw material components of the cholesteric liquid crystal composition include nematic liquid crystal, a hydrophobic first chiral compound, and a hydrophilic second chiral compound, with opposite optical rotations between the first and second chiral compounds. A hydrophilic interface is formed on the side of one of the first and second substrates facing the liquid crystal layer. This overcomes the limitation that the theoretical reflectivity of a single optically active cholesteric liquid crystal does not exceed 50%, improving overall reflectivity and display brightness. Because the components with different optical rotations are vertically layered within the same continuous liquid crystal phase, rather than forming an independent double-layer structure through external bonding, there are no obvious independent mechanical interfaces between the layers, reducing light scattering loss and improving optical coupling efficiency.

The present invention provides an integrated platform for exciting a molecular fluorescence signal, a detection chip, and an optical packaging structure. The integrated platform for exciting the molecular fluorescence signal comprises, arranged in sequence: an input optical coupling structure (1), a first filtering structure (2), an optical beam-splitter tree structure (3), a filtering structure array (4), a fluorescence excitation structure array (5), and an optical coupling-out structure array (6). The detection chip is used for detecting molecular fluorescence and comprises, arranged from bottom to top in sequence: a fluorescence detection layer (103'), a fluorescence collection layer (102'), and a fluorescence excitation layer (101'). The fluorescence excitation layer (101') comprises, arranged in sequence: an input optical coupling structure (1011'), an optical beam-splitter tree structure (1013'), a fluorescence excitation structure array (1014'), and an optical coupling-out structure array (1015'). The fluorescence excitation layer is further provided with an optical feedback structure (1012'), wherein an input end of the optical feedback structure (1012') is connected to a first output end of one branch of the optical beam-splitter tree structure (1013'). The optical packaging structure comprises an optical fiber module (2') and the detection chip (1'). The integrated platform in the present invention incorporates on-chip filters, providing an integrated fluorescence excitation solution capable of suppressing broadband background light arising from spontaneous fluorescence of lasers or waveguides, thereby improving a signal-to-noise ratio. The detection chip and the optical fiber module in the optical packaging structure in the present invention employ a passive optical coupling scheme, thereby facilitating stability of fluorescence signals and reducing complexity of external device optical paths.

This invention provides an online monitoring system and method for krypton-85 based on a scintillation fiber bundle, specifically relating to the field of nuclear radiation monitoring. The online monitoring system includes: a gas pretreatment unit, a detection unit, an electronics and data acquisition unit, and a control unit. The detection unit is connected to the gas output terminal of the gas pretreatment unit. The detection unit includes a detection chamber, a scintillation fiber bundle, a first photomultiplier tube, a second photomultiplier tube, and a lead shield. The scintillation fiber bundle is disposed within the detection chamber, and the first and second photomultiplier tubes are respectively located at both ends of the detection chamber, with their photosensitive surfaces optically coupled to both ends of the scintillation fiber bundle. The lead shield covers the outside of the detection chamber. The electronics and data acquisition unit receives the output signal from the detection unit, and the control unit controls the automatic operation of the entire system, parameter setting, and data acquisition and processing. This invention solves the problems of poor timeliness and insufficient representativeness in traditional offline monitoring methods.

To improve the coupling efficiency when coupling a wavelength-coupled beam into an optical transmission fiber. [Solution] The wavelength beam coupling device couples multiple laser beams emitted from a laser light source, each having different peak wavelengths, and arranged in a second direction where the central axes of the beams emitted in a first direction intersect with respect to the first direction. The wavelength beam coupling device comprises first and second diffraction gratings, the first diffraction grating being positioned to receive multiple laser beams and diffracting the multiple laser beams in different directions according to their wavelengths and causing them to be incident on the second diffraction grating, the second diffraction grating further diffracting the multiple laser beams diffracted by the first diffraction grating to form a wavelength-coupled beam, and emitting the wavelength-coupled beam in the first direction, and an optical coupling unit for coupling the wavelength-coupled beam into an optical transmission fiber, the optical coupling unit being configured to be movable in the second direction.

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.

A photonic system includes an optical coupling interface for an optical fiber disposed on a first surface of a support material and a PIC die / chip disposed on a second surface of the support material that is opposite from the first surface of the support material. An optical reflector structure is disposed within the PIC die / chip. The optical reflector structure is configured to receive a light beam from an optical waveguide within the PIC die / chip and turn the light beam toward the second surface of the support material and toward the optical coupling interface for the optical fiber. The light beam travels in a first direction from the optical waveguide within the PIC die / chip through the optical reflector structure, and then in a second direction through the optical reflector structure, and then through the overall thickness of the support material to reach the optical coupling interface for the optical fiber.

A catheter system (100) for treating a treatment site (106) within or adjacent to a vessel wall (108A) or a heart valve includes a light source (124), a first light guide (122A), a second light guide (122A), and a guide bundle (152). The light source (124) generates light energy. The first light guide (122A) receives the light energy from the light source (124) and has a guide proximal end (122P). The second light guide (122A) receives the light energy from the light source (124) and has a guide proximal end (122P). A guide bundle (152) is in optical communication with the light source (124). The guide bundle (152) bundles the first light guide (122A) and the second light guide (122A). The guide bundle (152) includes a first ferrule (778) that engages the guide proximal end (122P) of the first light guide (122A) and a second ferrule (778) that engages the guide proximal end (122P) of the second light guide (122A). At least one of the ferrules (778) can be formed at least partially from a ceramic material or a metallic material.

Integrated target waveguide devices and optical analytical systems comprising such devices are provided. The target devices include an optical coupler that is optically coupled to an integrated waveguide and that is configured to receive optical input from an optical source through free space, particularly through a low numerical aperture interface. The devices and systems are useful in the analysis of highly multiplexed optical reactions in large numbers at high densities, including biochemical reactions, such as nucleic acid sequencing reactions. The devices provide for the efficient and reliable coupling of optical excitation energy from an optical source to the optical reactions. Optical signals emitted from the reactions can thus be measured with high sensitivity and discrimination. The devices and systems are well suited for miniaturization and high throughput.

The invention relates to a device for optical coupling and for mode-selective separation or superposition of light fields, to a use thereof and to a method for producing a waveguide-based optical coupling element (10) designed for mode-selective separation or superposition of light fields at a further optical coupling point (410) of an optical assembly (400). The device comprises at least one waveguide-based optical coupling element (10) having at least three optical coupling points (100, 370, 380) and at least one optical assembly (400) having at least one further optical coupling point (410), wherein the at least one optical coupling point (100, 370, 380) is optically connected to the at least one further optical coupling point (410), and wherein the waveguide-based optical coupling element (10) is designed to efficiently and bidirectionally transport light between eigenmodes (120, 260) associated with a first optical coupling point (100) and a second optical coupling point (370) and between eigenmodes (130, 280) associated with the first optical coupling point (100) and a third optical coupling point (380).