616 results about "Optical coupling" patented technology

According to the three-dimensional stacked photoelectric co-packaging structure and the packaging method thereof provided by the invention, the three-dimensional stacked structure is formed by bonding the optical chips with C2W of the adapter plate wafer, and the optical chips can be allowed to be processed separately and then bonded on the adapter plate wafer, so that the complexity of the packaging process is reduced, and the packaging reliability is improved; besides, a bonding pad of each layer of optical chip bonding pad region is in contact connection with a part of conductive via holes of the electric interconnection region, and an upper layer optical coupling region is arranged to shrink outwards relative to a lower layer optical coupling region to expose a first optical coupler in the lower layer optical coupling region, so that the areas of the optical chips are sequentially increased from bottom to top along the thickness stacking direction of the photoelectric switching structure; the electric interconnection structure is arranged on the outer side edge of the optical chip to form an inverted pyramid shape, the electric interconnection structure is distributed on the outer side edge of the optical chip, a conductive column structure can be effectively prevented from being manufactured on the optical chip, the process complexity is reduced, meanwhile, the optical interconnection structure is also distributed on the outer side edge of the optical chip, light in the optical chip can be directly coupled to a photoelectric transmission layer, and too high efficiency loss caused by too many optical coupling times is avoided.

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. The PIC die / chip includes an oxide stack, where a portion of the oxide stack is configured as an optical reflector structure that includes a reflecting surface configured to direct a light beam conveyed from an optical waveguide within the PIC die / chip from a first direction of travel to a second direction of travel directed toward the second surface of the support material and toward the optical coupling interface for the optical fiber disposed on the first surface of the support material. The light beam travels through the optical reflector structure and through the support material to reach the optical coupling interface for the optical fiber.

The invention relates to the technical field of high-energy physics and particle detection, and discloses a cosmic ray muon detector based on non-optical coupling, the cosmic ray muon detector comprises a plurality of detection layers, each detection layer comprises a plurality of columns of detection units arranged in parallel, each column of detection units is formed by aligning and arranging a plurality of scintillator strips end to end in a mechanical mode, and optical coupling does not exist between the adjacent scintillator strips; each detection unit is provided with a wavelength shift optical fiber group, and the wavelength shift optical fiber groups are fixed through mechanical clamping grooves formed in the side faces of the scintillator strips and are continuously laid along the whole column of detection units; the light emitting end of the wavelength shift optical fiber group is coupled to the photoelectric conversion module. According to the invention, mechanical splicing without optical coupling is adopted to construct a long detection column, so that the detector can be quickly assembled and deployed on site by using a standard assembly which is low in cost and easy to transport, and high cost, high risk and complex process of precise optical coupling of a long-strip-shaped scintillator are thoroughly avoided.

The invention provides a film lithium niobate chip optical fiber coupling machine vision alignment control method, which comprises the following steps: acquiring a high-resolution image of a waveguide end surface of a film lithium niobate chip, and extracting a multi-structure vision representation set from the high-resolution image; determining an effective action area of the mode field by combining the emergent light intensity distribution and geometric constraint provided by the boundary of the side wall; calculating an energy weighted center based on the light intensity distribution in the effective action area of the mode field, and mapping the energy weighted center to an assembly platform coordinate system to obtain an optical coupling reference center for alignment; with the optical coupling reference center as a target, the position and posture of the optical fiber are adjusted through feedback control, so that the center of an optical fiber core approaches and aligns to the optical coupling reference center; after alignment is completed, the stable optical fiber pose is evaluated and locked, the final coupling pose and performance indexes are output, the problem of decoupling of the visual reference and the real optical reference can be solved, and low-loss and high-stability coupling between the thin-film lithium niobate chip and the optical fiber is achieved.

Apparatuses, systems and methods for optical coupling, optical integration, electro-optical coupling, and electro-optical packaging are described herein. Optical couplers may comprise various optical elements (e.g., mirrors as described herein) to relax optical assembly requirements and improve producibility. Optical couplers may improve fiber-to-chip, fiber-to-fiber and chip-to-chip optical connection. Optical couplers and optical components may be used to improve integration of, connection of, and / or packaging of optical systems and / or components with electrical systems and / or components.

The invention provides a high-stability single-mode semiconductor laser based on dynamic wavefront shaping and a control system, and relates to the technical field of semiconductor lasers, comprising a semiconductor laser gain module, a dynamic wavefront shaping module, a single-mode screening module and a laser output module which are optically coupled in sequence, wherein the semiconductor laser gain module is composed of a quantum well structure gain chip, a distributed feedback grating and a surface plasma structure are integrated on the surface of an active area of the gain chip, and the distributed feedback grating and the surface plasma structure are combined on the surface of the active area through a surface etching process. According to the invention, through the dynamic wavefront shaping module and the multi-parameter closed-loop control system, real-time adaptive regulation and control of the whole laser output process are realized. According to the system, wavefront distortion can be rapidly detected and compensated in a complex disturbance environment, and response delay and manual intervention of traditional static correction are remarkably reduced.

Apparatuses, systems and methods for optical coupling, optical integration, electro-optical coupling, and electro-optical packaging are described herein. Optical couplers may comprise various optical elements (e.g., mirrors as described herein) to relax optical assembly requirements and improve producibility. Optical couplers may improve fiber-to-chip, fiber-to-fiber and chip-to-chip optical connection. Optical couplers and optical components may be used to improve integration of, connection of, and / or packaging of optical systems and / or components with electrical systems and / or components.

A semiconductor laser includes a distributed feedback (DFB) region including an active layer and a uniform grating and two distributed Bragg reflector (DBR) region including an core layer and a uniform grating and optically coupled to respective ends of the DFB region and lengths of the DFB region and the DBR regions in a waveguide direction are set so that a photon-photon resonance frequency is in a range from 40 GHz to 50 GHz when an operating temperature is between 25 degrees and 75 degrees. The semiconductor laser optimizes a PPR effect and enables maximizing a modulation bandwidth.

An eye tracking system for a head-mounted device includes an imaging assembly and an illumination assembly. The imaging assembly is configured to optically focus light from an object plane of an eye onto an image plane of an image sensor, and the illumination assembly is configured to optically project light from an illumination source onto the object plane of the eye. The imaging assembly is configured with an imaging angle coding mapping for optical relay coupling imaging. The illumination assembly is configured with an illumination angle coding mapping for optically coupling a projection.

Apparatuses, systems and methods for optical coupling, optical integration, electro-optical coupling, and electro-optical packaging are described herein. Optical couplers may comprise various optical elements (e.g., mirrors as described herein) to relax optical assembly requirements and improve producibility. Optical couplers may improve fiber-to-chip, fiber-to-fiber and chip-to-chip optical connection. Optical couplers and optical components may be used to improve integration of, connection of, and / or packaging of optical systems and / or components with electrical systems and / or components.

The invention relates to the technical field of industrial safety control, in particular to a dual-system redundancy safety circuit and a self-diagnosis method, the dual-system redundancy safety circuit is composed of a first safety system, a second safety system, a test load and a switching unit, and the first safety system and the second safety system realize information interaction through an optical coupling isolation communication interface. According to the self-diagnosis method, an encrypted diagnosis trigger pulse sequence is generated through the second safety system, a test contactor of the first safety system is driven to be connected to a test load, and a main safety loop generates simulated real safety action current; the second safety system performs high-speed sampling, filtering, correlation analysis and response delay extraction on the current waveform to obtain a diagnosis result of the contact performance and the load capacity; and when an abnormity is detected, the second safety system controls the switching unit to execute safety switching through the solid-state switching output point, so that control right taking-over is realized, and the reliability and the online diagnosis capability of the safety loop are improved.

The invention provides an on-chip integrated laser light source and an optical coupling integration method thereof.The on-chip integrated laser light source comprises a silicon optical substrate and a light source chip assembly integrated on the silicon optical substrate, and the silicon optical substrate comprises an optical signal transmission waveguide; the light source chip assembly comprises a surface-emitting distributed feedback laser chip so as to generate laser beams emitted in the direction perpendicular to the surface of the chip. The on-chip integrated laser light source further comprises a grating coupling structure arranged between the surface emission distributed feedback laser chip and the optical signal transmission waveguide. The light-emitting surface of the surface-emitting distributed feedback laser chip is arranged towards the silicon light substrate, and a laser beam generated by the surface-emitting distributed feedback laser chip is directly projected and coupled into the light signal transmission waveguide through the grating coupling structure; the surface-emitting distributed feedback laser chip is fixedly combined on the silicon optical substrate through a flip chip technology, so that the high-precision end face alignment requirement of the heterogeneous integrated waveguide is converted into high-efficiency grating coupling based on a surface light emitting mode. In this way, harsh end face coupling is converted into efficient grating coupling.

The invention relates to a packaging structure and a preparation method thereof, and relates to the technical field of semiconductors, in the packaging structure and the preparation method thereof, a first rewiring layer comprises a wiring layer and a dielectric layer, the orthographic projection of the wiring layer on a carrier plate is not overlapped with the orthographic projection of an optical coupler on the carrier plate, namely, the wiring layer does not shield an optical window of the optical coupler, and the dielectric layer is arranged on the dielectric layer; a light-transmitting dielectric material column is formed on the side, away from the carrier plate, of the first rewiring layer, the orthographic projection of the light-transmitting dielectric material column on the carrier plate is overlapped with the orthographic projection of the optical coupler on the carrier plate, at the moment, an optical window of the optical coupler is shielded by the light-transmitting dielectric material column, and the optical window cannot be polluted when the second packaging layer is prepared subsequently; the second packaging layer exposes the light-transmitting dielectric material columns, and the optical coupler achieves vertical optical coupling through the light-transmitting dielectric material columns.

There is provided an external cavity laser, including: a photonic integrated platform including a gain chip providing a gain medium and at least one reflector chip, the photonic integrated platform including first and second functional layers made of different materials; a resonant cavity optically coupled to the gain medium and including a first and a second micro-ring resonators (MRR) in a Vernier configuration, the first MRR and second MRR extending within respective ones of the first and second functional layers made of different materials and having corresponding group indices, the first and second MRRs having different radii selected in view of said corresponding group indices; and a tuning mechanism for tuning a spectral response of at least one of the first and second MRR.

An illumination system 700 having a first and second telescope each comprising a respective array of micro-lenses 604, 606 and 704, 706 which are optically coupled to form respective arrays of micro-l

The invention discloses an intelligent bone fracture plate integrated with an optical fiber Fabry-Perot sensor and a healing monitoring method. The system comprises an intelligent bone fracture plate module, an in-vitro detection module and a data analysis module. The intelligent bone fracture plate module mainly comprises a bone fracture plate body, a diaphragm type optical fiber Fabry-Perot sensor packaged in a U-shaped groove in the bone fracture plate, and a subcutaneous coupling capsule connected through a leading-out optical fiber. The sensor converts mechanical strain of the bone fracture plate into optical signal change of the Fabry-Perot cavity. The in-vitro detection module is in wireless optical coupling with the subcutaneous coupling capsule through an external read-write equipment head of the in-vitro detection module, probe light is emitted, interference light signals are received and reflected, and the strain of the bone fracture plate is calculated through a spectrum analyzer / detector. And the data analysis module converts the strain data into a key load sharing ratio. By monitoring the trend that the ratio gradually decreases from the postoperation along with time and comparing the trend with a preset clinical threshold value, objective, quantitative, dynamic and non-invasive monitoring of the fracture healing process is achieved.

An integrated detection method based on a liquid-filled hollow-core optical fiber enhanced Raman signal comprises the following steps: positioning an optical coupling system, a liquid adapter and a forward Raman signal collection system along the same dovetail groove guide rail, and operating a sliding block fine adjustment mechanism to adjust the relative positions of the optical coupling system, the liquid adapter and the forward Raman signal collection system so as to enable an optical path to be axially aligned; the micro-flow injection system is operated, target liquid is conveyed to the liquid adapter through the micro-flow guide pipe, the liquid adapter keeps the collimation alignment relation between the hollow-core optical fiber and the laser, and then the target liquid is introduced into a fiber core of the hollow-core optical fiber; the laser light source is started to emit laser, and after the laser is collimated and focused through the optical coupling system, a Raman signal is excited and generated; operating a forward Raman signal collection system to capture a Raman signal output by the hollow-core optical fiber, filtering out an exciting light Rayleigh scattering signal in the Raman signal, and transmitting the purified Raman signal to a Raman spectrometer; and analyzing and processing the purified Raman signal, and outputting a detection result of the target liquid.

An apparatus for detecting optical waves comprises one or more closed-loop waveguiding structures (CWSs) formed from a core material, each CWS configured to guide optical waves along a closed-loop path. A coupling waveguiding structure is formed from the core material comprising: a first optical coupling portion configured to optically couple at least a portion of an optical wave propagating through the coupling waveguiding structure into the first CWS, and a second optical coupling portion configured to optically couple at least a portion of an optical wave propagating through the coupling waveguiding structure into the first CWS. A first absorbing structure is in optical communication with the first CWS. Circuitry is configured to detect optical waves at least partially absorbed by the first absorbing structure. The coupling waveguiding structure is configured to guide optical waves along a path outside the one or more CWSs.

An optical coupling component (10) optically couples a plurality of optical fibers (61) and a photonic integrated circuit (7). The optical coupling component (10) comprises the plurality of optical fibers (61), an optical fiber holding component (4) which holds the plurality of optical fibers (61), and a lens array (5) which has a plurality of mirror lenses (53). The plurality of mirror lenses (53) each change the angle of an optical path between each of the plurality of optical fibers (61) and the photonic integrated circuit (7). The lens array (5) has a space structure in which a portion of the optical path from entry into to exit from the lens array (5) passes through the air. The optical fiber holding component (4) and the lens array (5) are formed independently from each other and are directly or indirectly connected to each other.

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.

The invention relates to the technical field of photovoltaic modules, in particular to a modeling method and system applied to a photovoltaic module. The method comprises the following steps: acquiring photovoltaic module data, extracting operation environment and composition material information, and constructing a photovoltaic module operation simulation model based on the data; based on thermo-optical coupling and structure decline information, estimating the dynamic distortion degree of thermal response of the module, and further detecting the decline condition of optical receiving performance of the module and the decline of local power generation efficiency through a three-dimensional simulation model; determining a collaborative deviation amplification trend output by the component; evaluating a performance degradation factor path of the photovoltaic module, and performing optimization processing on the three-dimensional simulation model to obtain more accurate photovoltaic module model optimization data; according to the invention, through modeling of the photovoltaic module, more accurate monitoring of the aging fault of the photovoltaic module is realized.

The invention relates to the technical field of neutral atom quantum computing, in particular to a manufacturing method and device of a spatial optical coupling device. The method comprises the following steps: melting and stretching one end of a large-core-diameter optical fiber to form a conical optical fiber section through an optical fiber tapering technology; and the other end of the large-core-diameter optical fiber receives spatial light, so that when an optical signal passes through the conical optical fiber section, high-order mode light is cut off and leaked into the cladding, and fundamental mode light can be transmitted into the single-mode optical fiber to realize single-mode light output. A large-core-diameter optical fiber is used for replacing a single-mode optical fiber to couple spatial light, the alignment tolerance of the spatial light coupling stage is improved, the coupling efficiency can be improved to about 95%, the coupling efficiency of all light beams can be improved to about 70% under the condition of multi-light-beam coupling, and the requirement for mechanical adjustment precision and the system cost are reduced; and a large-core-diameter optical fiber is transited to a single-mode optical fiber through an optical fiber tapering technology, so that high-quality single-mode light output is realized.

The invention relates to a mode field separation high-polarization semiconductor laser and application thereof, and aims to solve the problem of low polarization degree caused by stress of an existing laser. The laser comprises a main mode field region and a coupling region which are stacked along an epitaxial growth direction. The main mode field region is used for limiting and lasing a first polarization optical mode; the coupling region is made of a high-loss material and is used for absorbing and attenuating the second polarization optical mode. The two meet the following matching conditions: the effective refractive index of the second polarization optical mode of the coupling region is matched with the effective refractive index of the specific m-order second polarization optical mode of the main mode field region, so that the second polarization optical mode is optically coupled and expanded to the coupling region to be dissipated; the effective refractive index of the first polarization optical mode of the coupling region is mismatched with the effective refractive index of the specific m-order first polarization optical mode of the main mode field region, so that the coupling region is limited in the main mode field region for stable lasing. According to the invention, a polarization-related mode filtering mechanism is utilized, so that the polarization degree and the process robustness of the laser are remarkably improved.

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.

The invention discloses a tomography and targeted energy thermal therapy system and method based on an acousto-optic coupling functional film layer, and relates to the technical field of noninvasive medical diagnosis and treatment. The system comprises an intelligent processing carrier, an acousto-optic coupling function film layer, a scanning mechanism, an energy treatment module and a processing and temperature control module. The intelligent processing carrier at least comprises a 20Hz-20kHz audio unit, a pickup unit, an optical signal unit and a processor; the acousto-optic coupling functional film layer is of a single physical structure and is inseparable, acoustic frequency conversion focusing imaging and targeted warm delivery at 42-47 DEG C are achieved in the same physical area in a time-sharing mode, the acoustic processing layer achieves 1000-8000 frequency doubling through a multi-stage resonance microcavity array, and the echo signal-to-noise ratio is larger than or equal to 15 dB; the scanning mechanism comprises a plurality of modes such as rotation, translation, multi-device array, human body movement, local limb movement, human body bearing support device movement and the like; the energy forms cover all types of light, electromagnetism, radio frequency and the like capable of generating a warm effect, including but not limited to non-contact or contact energy delivery modes. The traditional Chinese medicine composition is suitable for tumors, infections, inflammations, and all lesions sensitive to temperature of 42-47 DEG C including nervous system lesions such as amyotrophic lateral sclerosis, Alzheimer's disease, Parkinson's disease, multiple sclerosis and the like, is low in cost, free of radiation and easy to popularize, and has extremely high creativity and practical value.

The invention discloses a fine simulation method of a CdTe-based II-VI group compound thin film solar cell and a cell structure designed based on the method. According to the method, a physical model of a CdTe-based battery is established through numerical simulation, then the energy band structure of a carrier transport layer is systematically optimized, and the quantitative criteria that a hole transport layer needs to meet the requirements that the Fermi energy level is lower than that of an absorption layer and the hole transport layer has enough positive conduction band offset and an electron transport layer needs to have a wide band gap and moderate positive conduction band offset are determined. And for the optical layer, the optimal thickness of the antireflection layer is determined, the enhancement effect of the optical path gain of the textured structure on optical absorption is quantified, and the maximization of the light capture efficiency is realized. According to the method, through electrical-optical coupling simulation, the CdTe-based solar cell structure of which the conversion efficiency is remarkably improved can be accurately predicted and guided to be designed, the defects that a traditional experiment is high in trial and error cost and long in period are effectively overcome, and a reliable theoretical design and optimization tool is provided for research and development of a high-efficiency and low-cost CdTe-based solar cell.

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.

The utility model discloses a feeding device for optocoupler processing, which comprises a mounting plate and a taking mechanism, a driving mechanism for driving the taking mechanism to rotate and move up and down is arranged on the mounting plate, an air extracting mechanism for extracting air from the taking mechanism is arranged on the taking mechanism, and the taking mechanism is connected with the air extracting mechanism through a connecting pipe. And a supporting mechanism for positioning the connecting pipe is arranged on the taking mechanism. The air exhaust mechanism can vacuumize the taking mechanism, compared with air cylinder grabbing, the taking mode can reduce damage to the optocoupler, the driving mechanism can drive the taking mechanism to continuously rotate to take materials and move up and down to discharge the materials, and therefore the situation of idle stroke in the optocoupler machining process is prevented, and the machining efficiency of the optocoupler is improved. And when the taking mechanism and the connecting pipes continuously move up and down along with the driving mechanism, the arranged supporting mechanism can prevent the connecting pipes from being wound and bent, and feeding continuity is guaranteed.

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.