9004results about "Optical light guides" patented technology

Disclosed herein is an angular optical component retention and removal system that reduces the amount of space needed to accommodate fiber optic cables and enables optical components to be quickly and easily inserted, retained, and removed from an optical communications system. The optical component retention and removal system may include a single or plural angular retention sections that retain optical components in an angular orientation through a faceplate. The system may further include an insertion / retention mechanism that enables an optical component to be inserted and removed with a single hand. With the system, fiber optic cables extend at an angle from the optical components, requiring less clearance space in front of the faceplate for provision of the fiber optic cables.

Medical systems and devices include an elongate probe configured for insertion into a patient, where the elongate probe includes an atraumatic tip and where the atraumatic tip can include one or more of a loop, a curl, coil, a flexible distal region, and a steerable distal region. The distal region can be configured to transition away from a first shape toward a second shape upon insertion of the elongate probe within the patient. The optical fiber can include sensing core fibers configured to facilitate a determination of a physical state of the elongate probe. The elongate probe can also be configured to project illuminating light away from a distal end and receive imaging light at the distal end. The elongate probe can include a catheter.

A system for analyzing measurements performed on a biological subject, the system including one or more processing devices configured to acquire subject data at least in part captured by a measurement system including at least one substrate including a plurality of microstructures configured to breach a functional barrier of the subject and a sensor operatively connected to at least one microstructure, the at least one sensor being configured to measure response signals from the at least one microstructure, and analyze the subject data using at least one model to determine an indicator at least partially indicative of a physiological state of the subject.

The embodiment of the invention provides an electro-optical modulator and a light quantum computer. The electro-optical modulator comprises an electrode assembly and an optical waveguide assembly. The electrode assembly comprises a positive signal electrode, a negative signal electrode, a first grounding electrode and a second grounding electrode, and the positive signal electrode and the negative signal electrode are arranged between the first grounding electrode and the second grounding electrode. The optical waveguide assembly is configured to bear optical signals and comprises a first optical waveguide and a second optical waveguide, the first optical waveguide is located between the positive signal electrode and the negative signal electrode and used for bearing first optical signals, and the second optical waveguide is located between the first grounding electrode and the positive signal electrode or between the second grounding electrode and the negative signal electrode and used for bearing second optical signals. The carrier is used for bearing second optical signals. Constant-amplitude voltage signals with opposite phases are applied to the positive signal electrode and the negative signal electrode which are tightly coupled, so that the modulation efficiency can be improved, and the common-mode noise can be reduced.

A heat transfer device may be used to provide a thermal conduit from heat generating components mounted on transversely oriented circuit boards. The heat transfer device generally includes a base portion for supporting and thermally coupling with at least one heat generating component on a main circuit board and a transverse portion for supporting and thermally coupling with at least one heat generating component on a daughter circuit board that is oriented transverse to the main circuit board. The base and transverse portions may be made of a thermally conductive material with raised pedestals providing the thermal coupling with the heat generating components. The transverse portion of the heat transfer device may also be designed to facilitate connecting the daughter circuit board to the main circuit board. The heat transfer device may be used in an opto-electronic communications module, such as a broadband digital access (BDA) module used in a hybrid fiber-coaxial (HFC) network.

Electro-absorption modulators (EAM) and monolithically integrated electro-absorption modulated lasers (EML) and methods of fabrication are disclosed. Vertically stacked waveguides for a distributed feedback (DFB) laser, an electro-absorption modulator (EAM) and a passive output waveguide are vertically integrated, and the DFB laser, EAM and output waveguide are optically coupled using laterally tapered vertical optical couplers. Laterally tapered vertical optical couplers provides an alternative to conventional butt-coupling of a laser and EAM, offering improved reliability for high power operation over extended lifetimes. Optionally, the EML comprises monolithically integrated electronic circuitry, e.g., driver and control electronics for the DFB laser and EAM. Beneficially, integrated EAM driver and control circuitry comprises a high-speed electro-optical control loop for very high-speed linearization and temperature compensation, e.g. to enable advanced modulation schemes, such as PAM-4 and DP-QPSK, for analog optical data center interconnect applications. Some embodiments are compatible with fabrication using a single epitaxial growth.

A displacement sensor including an optical whispering gallery mode (WGM) microresonator and a package encasing at least a portion of the WGM microresonator, the package comprising polydimethylsiloxane (PDMS). The WGM microresonator can be configured as a sensor and used in a displacement detection system that can detect displacement with high quality. Artificial intelligence can be implemented in the displacement detection system for improved sensing of different variables and / or pinpointing the location of perturbations.

The utility model relates to the technology of display equipment, and discloses AR glasses and a display system, and the AR glasses comprise a glasses frame module which is used for providing wearing support for a target object; the optical waveguide lens is mounted on the lens frame module and is provided with a coupled-in grating area and a coupled-out grating area; the first display module and the second display module are connected to the two opposite sides of the mirror frame module and arranged opposite to the coupled grating area, and the first display module and the second display module are used for synchronously outputting optical signals to the coupled grating area; the optical waveguide lens is configured to propagate an optical signal input to the coupling-in grating area to the coupling-out grating area and output the optical signal. The first display module and the second display module are arranged to synchronously output the optical signals to the coupled grating area so as to ensure that left and right imaging of the AR glasses is synchronous, the size design requirement of the AR glasses is reduced, and the situation that due to the fact that time difference exists between imaging of the two display modules, images displayed by equipment watched by a user cannot be normally combined is avoided.

The invention discloses a method for realizing topological boundary state switching by using a gyromagnetic photonic crystal. The method comprises the following steps: (1) obtaining a gyromagnetic photonic crystal formed by arranging cylindrical gyromagnetic columns, adjusting the radius of the gyromagnetic columns and an applied external magnetic field to obtain inversion of Mie resonance, realizing topological phase change, and obtaining three different topological phases; (2) on the basis of the three different topological phases obtained in the step (1), two gyromagnetic photonic crystals with different topological characteristics are spliced to obtain a heterogeneous photonic structure, and a one-way transmission chiral boundary state exists at a heterogeneous interface; and (3) for the heterogeneous photon structure, multiple Mie resonance inversion is adjusted through a magnetic field regulation and control method, and switching control of a topological boundary state is realized. According to the invention, a switchable topology boundary state is realized in the gyromagnetic photonic crystal, and a new idea and guiding significance are provided for design and application of a topology photonic device.

A spatial light modulator and a projection system are provided. The spatial light modulator includes a substrate layer, a first electrode layer, a first metasurface layer, a phase change material layer, a second electrode layer, and a first flat layer. The first electrode layer and the second electrode layer are respectively disposed on opposite sides of the substrate layer and the first flat layer that are parallel to each other, and the first metasurface layer and the phase change material layer are disposed between the first electrode layer and the second electrode layer. The first metasurface layer includes at least two metasurface units that are sequentially arranged, and a resonance frequency of each metasurface unit corresponds to a preset incident optical wavelength of each metasurface unit. The spatial light modulator performs phase modulation on incident light through the first metasurface layer and the phase change material layer.

An apparatus includes a waveguide and one or more partially reflective surfaces embedded inside the waveguide, wherein each of the one or more partially reflective surfaces includes a multi-layer coating structure, wherein a first portion of the multi-layer coating structure induces an overall phase shift of light propagating through the first portion of the multi-layer coating structure and wherein a second portion of the multi-layer coating structure is selected to decrease the overall phase shift.

The photonic integrated device comprises a substrate, a plurality of mechanical resonator structures on a surface of the substrate, exposed to receive sound waves from outside the device; a plurality of sensing optical waveguides, each sensing optical waveguide at least partly mechanically coupled to at least one of the mechanical resonator structures, or a sensing optical waveguide that is at least partly mechanically coupled to all of the mechanical resonator structures; an input optical waveguide on the surface of the substrate, coupled to the plurality of sensing optical waveguides or the single sensing optical waveguide, for supplying light to the plurality of sensing optical waveguides or the single sensing optical waveguide; at least one output optical waveguide on the surface of the substrate, coupled to the plurality of sensing optical waveguides or the single sensing optical waveguide, for collecting light from the plurality of sensing optical waveguides or the single sensing optical waveguide that has been affected by vibration of plurality of mechanical resonator structures.

The invention discloses a preparation method of a lithium niobate film waveguide frequency doubling device based on ferroelectric domain regulation and control. The method comprises the following steps of: spin-coating photoresist on the surface of a lithium niobate film, transferring a pattern by utilizing a photoetching technology, coating a film, stripping to form an electrode, applying high-voltage electric pulse to the electrode, and controlling the size of an electric field in the lithium niobate film and a reversal domain growth process through the material and the thickness of an insulating layer in the electrode, thereby controlling the reversal depth of a ferroelectric domain. And finally, spin-coating the photoresist again, transferring the pattern by photoetching, and performing dry etching to obtain the frequency doubling waveguide device. The frequency multiplication waveguide device preparation method provided by the invention has the characteristics of simple processing method, high device preparation efficiency and low loss, and meets the actual requirements in the fields of nonlinear optics, integrated optics and the like.

Some implementations described herein provide techniques and apparatuses provide a semiconductor device including a photonics device having a backside transmissive region and methods of manufacturing. The semiconductor device includes a first semiconductor device stacked over a second semiconductor device, where the first semiconductor device includes a photodiode structure and the second semiconductor device includes the backside transmissive region. The backside transmissive region, which is below the photodiode structure of the first semiconductor device, includes a trench structure having highly reflective structures and / or properties to maintain an optical power of light waves propagating through the backside transmissive region. An absence of structures within the trench structure lessens a likelihood of interferences which may cause a transmission loss (e.g., a reflection loss, an absorption loss, a scattering loss, and / or a mode mismatch loss) relative to another transmissive region that is adjacent to the photodiode structure.

An augmented reality (AR) or mixed reality (MR) eyewear display includes a frame with two lens rims. One of or both of the lens rims include eye-side lens installment features to remove or insert an eye-side lens into the lens rim. The lens rim includes a lens retention ring that extends around the lens rim between two ends of the lens retention ring positioned at a first side of the lens rim. The lens retention ring is configurable in an open state to remove or insert an eye-side lens in the first lens rim, and in a closed state to fix the eye-side lens in the first lens rim, wherein the two ends are farther apart from one another in the open state than in the closed state.

The invention discloses a vacuum microcavity interferometer chip, a manufacturing method and a low-drift optical pressure sensor, a film island structure is formed on the upper surface of a first substrate, and the film island structure comprises a protruding part and a pressure sensitive film surrounding the protruding part; a first side wall part, a getter cavity, a second side wall part and an F-P interference cavity located in the center are sequentially arranged on the lower surface of the first substrate in the radial direction, a first reflecting surface is deposited on the lower surface of the first substrate in the F-P interference cavity, and a second reflecting surface is deposited on the upper surface of the second substrate in the F-P interference cavity. A first optical antireflection film is deposited on the surface of the protruding part, and the first optical antireflection film, the protruding part, the pressure sensitive film, the first reflecting surface and the second reflecting surface have the same center; the filter further comprises a vent hole, and the vent hole is formed in the second side wall part and used for communicating the getter cavity and the F-P interference cavity.

Within integrated photonic circuits the ability to induce an optical phase shift allows multiple circuit elements to be implemented including, for example, modulators and optical switches. It is beneficial to achieve lower power consumption for these phase shift elements to reduce overall power consumption of the photonic circuits and their associated drive circuits. Exploiting processing techniques for microelectromechanical systems (MEMS) designs are outlined for high efficiency thermo-optic phase shifter elements with suspended elements that improve thermal isolation and counteract stress induced phase shifts that reduce the thermal induced phase shift. MEMS based spring structures provide both mechanical support and thermal pathways for improved responsivity. Other designs employ direct MEMS based modification of the waveguide path length without exploiting thermal based index changes.

A hollow-core optical fiber including from 5 to 8 spaced apart cladding elements defining a hollow-core region, each including (a) a first capillary and (b) a second capillary disposed within the first capillary. For each of the cladding elements, (i) the second capillary is offset from the first capillary by an angle within a range of from 20 degrees to 120 degrees and (ii) a ratio of an outer diameter of the second capillary to an outer diameter of the first capillary is within a range of from 0.47 to 0.85. The hollow-core optical fiber exhibits confinement loss of less than 0.056 dB / km for electromagnetic radiation of 850 nm, less than 0.028 dB / km for electromagnetic radiation of 1310 nm, less than 0.204 dB / km for electromagnetic radiation of 1550 nm, and less than 0.016 dB / km for electromagnetic radiation of 2400 nm.

The invention discloses an optical memristor, and relates to the field of photon integrated circuits and optical computing, and the optical memristor comprises a waveguide layer, a ferroelectric film layer, an electrode structure and a substrate. The ferroelectric film layer is located on the upper surface of the substrate; the waveguide layer and the electrode structure are located on the upper surface of the ferroelectric film layer; the waveguide layer is used for propagating an incident light signal and performing amplitude modulation on the incident light signal; the electrode structure is used for applying an electric field to the ferroelectric film layer; and the ferroelectric film layer is used for carrying out phase modulation on optical signals transmitted in the waveguide layer under the action of the electric field. The ferroelectric material is used as the optical switch of the optical memristor, efficient modulation of the optical phase is achieved through the non-volatility and the high electro-optical effect of the ferroelectric material, and meanwhile the optical memristor has the advantages of being low in energy consumption and rapid in response.

An embodiment provides a semiconductor package including: a redistribution structure; an interconnection structure on the redistribution structure; a memory stacking structure disposed on the redistribution structure and including a buffer die and core dies stacked on the buffer die; a semiconductor die disposed on the buffer die and on the interconnection structure; and an optical engine disposed on the interconnection structure.

The utility model relates to an optical waveguide lens, which comprises at least two glass substrates, an optical waveguide sheet arranged between two adjacent glass substrates, a grating structure arranged on at least one surface of the optical waveguide sheet, and a filling layer embedded in a grating gap of the grating structure, the optical waveguide sheet and the grating structure are made of silicon carbide, the filling layer is made of a low-refractive-index optical coating material, the outer side surfaces of the filling layer and the grating structure are approximately located on the same plane, and / or the filling layer covers the outer side surface of the grating structure. According to the optical waveguide lens, the low-refractive-index glass and the silicon carbide optical waveguide sheet are arranged in a staggered manner, and the air gap is filled with the low-refractive-index optical coating material, so that the obtained optical waveguide lens has the advantages of being light, thin, high in mechanical strength and good in stability while ensuring full-color imaging.

The invention belongs to the technical field of laser, and discloses a grating multiplexing spectrum synthesis system, which comprises a beamlet dense array, a diffraction grating and a turn-back mirror, each beamlet emitted by the beamlet dense array is diffracted by the diffraction grating and then is emitted in the form of convergent light, and the light is reflected twice by the turn-back mirror to form a light beam; each laser sub-beam is incident on the diffraction grating again along the opposite direction parallel to the original light, the sub-beams converge into one point on the diffraction grating by adjusting the distance between the turn-back mirror and the diffraction grating, and at the moment, the incident angle of each sub-beam is equal to the diffraction angle diffracted from the diffraction grating for the first time; and the diffraction angles of the sub-beams subjected to the second diffraction on the diffraction grating are equal and equal to the incident angle of the sub-beams subjected to the first diffraction, that is, the synthesized light beam is emitted along the direction parallel to and opposite to the direction of the light beam emitted from the sub-beam dense array. The invention provides a spectrum synthesis system which is simple in structure, easy in engineering implementation and compact in volume.

The utility model discloses a cambered surface touch control light guide plate display module and a household appliance display panel, which comprises a membrane, a shading filling layer, a light guide plate, a printed circuit board (PCB) and an arc-shaped support provided with a connecting piece, the PCB is fixedly arranged in the arc-shaped support, the light guide plate, the shading filling layer and the membrane are arranged above the PCB, and the connecting piece is arranged on the light guide plate. The shape of the light guide plate is matched with that of the arc-shaped bracket; the arc-shaped support is detachably connected with the arc-shaped household appliance panel through a connecting piece. In order to adapt to a non-planar household appliance panel, the arc-shaped bracket is adopted, the bracket is integrated or split, the bracket and the circuit board can be fixedly mounted conveniently, and the bracket is formed by plastic injection molding, so that the bracket is stable in supporting and excellent in mechanical property. The support and the circuit board can be fixed through hot melting riveting, and the stability between the circuit board and the support is improved. The cambered surface touch control light guide plate display module is detachably connected with the panel shell of the household appliance and can be repeatedly used, so that the cost is greatly saved.

The invention belongs to the technical field of micro-nano processing, and particularly relates to a preparation method and application of a metal micro-nano tube array. Comprising the following steps: preparing a metal layer on the surface of a substrate; coining glue is sprayed on the surface of the metal layer, then coining is conducted through a template, and a micro glue column array is formed after curing; a plasma etching process is adopted, the micro glue column array is used as a mask, the metal layer exposed out of the gaps in the bottom of the micro glue column array is etched, and a structure with the micro glue columns wrapped by metal is formed; and removing the rubber columns in the structure of the metal-coated micro rubber columns to obtain the metal micro-nano tube array. According to the invention, a residual-layer-free imprinting technology is adopted, the problem of glue layer residue in traditional imprinting is avoided, and the etching uniformity is improved. A plasma dynamic balance process is adopted, the side wall redeposition effect of etching by-products is utilized, and the metal micro-nano tubes are formed in a self-assembly mode. The prepared metal micro-nano tube array has high aspect ratio compatibility, and the nano tube array with the aspect ratio as high as 10: 1 can be realized.

Cooling module includes a mounting element, a force application member, a lever, and a cold plate movably coupled to the mounting element. The mounting element having engagement members, is coupled to a receptacle of an electronic device that is configured to receive a removable electronic device at the receptacle. The force application member having spring fingers, is disposed between the mounting element and the cold plate, and movable relative to the mounting element. The lever is connected to the mounting element and the force application member and shiftable between actuated and unactuated states. In the actuated state, the lever pushes the force application member along a first direction causing the engagement members to move the force application member along a second direction perpendicular to the first direction and urge the cold plate to compress the spring fingers and establish thermal contact between the cold plate and the removable electronic module.

A multirail-encoded qubit can be implemented using a quantum system having a state space that includes a number M of distinct modes, where M is an integer greater than 2. The M modes are logically partitioned into two disjoint subsets (or “bands”), with each mode assigned to exactly one of the bands. The multirail encoding is defined such that a state in which any one of the modes in the first band is occupied and all modes in the second band are unoccupied maps to a logical 0 state of the qubit, and a state in which any one of the modes in the second band is occupied and all modes of the first band are unoccupied maps to a logical 1 state. Systems and methods for generating, measuring, and operating on multirail-encoded qubits are disclosed.

The invention belongs to the field of high-temperature sensing, and discloses a self-calibration high-temperature-resistant optical fiber temperature-vibration double-parameter sensor which comprises a packaging base, a packaging cover plate, a packaging sleeve, an optical fiber, a Bragg fiber grating and a sensitive diaphragm. The packaging cover plate is fixedly connected with the packaging base, a first diaphragm groove is formed in the top of the packaging base, a second diaphragm groove is formed in the bottom of the packaging cover plate, and the first diaphragm groove and the second diaphragm groove are oppositely arranged to form a vibration space of the sensitive diaphragm; the Bragg fiber grating is provided with a first Bragg grating and a second Bragg grating, the first Bragg grating is fixed on the packaging cover plate, and the second Bragg grating is fixedly arranged on the sensitive diaphragm; one end of the optical fiber is fixedly arranged in the central through hole and is packaged through a packaging sleeve fixed at the top of the packaging cover plate; the optical fiber end face and the sensitive diaphragm form a resonant cavity. According to the invention, temperature and vibration signals can be monitored synchronously under a high-temperature condition, self-calibration of the vibration signals is realized, and the measurement precision is improved.

A liquid crystal on silicon (LCoS) and a wavelength selective switch (100), which are used for providing an LCoS device capable of realizing polarization independence, and can also ameliorate the problem of secondary crosstalk occurring due to a residual of unconverted deflection, thereby ensuring the application of the LCoS. In the LCoS, an extra phase is pre-added in a dispersion direction on the basis of structures such as a meta-surface design or a phase film; and by means of the pre-added extra phase, unconverted polarization light forms a high-frequency deflection or a scattering phase deviates the energy of the unconverted polarization light from a crosstalk level, so as to prevent the crosstalk of the unconverted polarization light and converted polarization light, thereby implementing the suppression of secondary crosstalk in a port direction.

An electronic device package includes a circuit layer, a first semiconductor die, a second semiconductor die, a plurality of first conductive structures and a second conductive structure. The first semiconductor die is disposed on the circuit layer. The second semiconductor die is disposed on the first semiconductor die, and has an active surface toward the circuit layer. The first conductive structures are disposed between a first region of the second semiconductor die and the first semiconductor die, and electrically connecting the first semiconductor die to the second semiconductor die. The second conductive structure is disposed between a second region of the second semiconductor die and the circuit layer, and electrically connecting the circuit layer to the second semiconductor die.

The invention provides a bent waveguide structure, an electro-optical modulator and a light quantum computer, and relates to the technical field of electro-optical modulation.The bent waveguide structure comprises an input waveguide, a bent waveguide and an output waveguide which are sequentially connected, and the bent waveguide comprises a substrate transmission waveguide layer, an input coupling part and an output coupling part; the input coupling part and the output coupling part are arranged at the two ends of the substrate transmission waveguide layer respectively, a shallow etching groove is formed between the input coupling part and the output coupling part, the input coupling part is connected with the input waveguide, and the output coupling part is connected with the output waveguide. Compared with the prior art, the shallow etching groove is formed between the input coupling part and the output coupling part, so that the thickness of the waveguide film at the bending part is reduced to ensure that the substrate transmission waveguide layer is of a single-mode structure, the transmission loss is reduced, and the bending waveguide is relatively independent from the input waveguide and the output waveguide, so that the transmission efficiency is improved. Therefore, the process precision of the bent waveguide can be independently adjusted, the process time is reduced, and the efficiency is improved.