4962results 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.

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.

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.

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.

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 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.

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.

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.

The invention relates to an asymmetric transmission optical device, a test method and an electronic device, and belongs to the technical field of nano optics and photonics. Comprising a dielectric nano-particle array which comprises a plurality of dielectric nano-particles, and the dielectric nano-particles are periodically arranged according to a preset interval; wherein the height of the dielectric nano particles is 60 nm to 150 nm; and the dielectric substrate is arranged below the dielectric nanoparticle array. The test method comprises the following steps: establishing a periodic array model according to the optical device, and setting structural parameters of the model to obtain an optimal periodic array model; performing asymmetric transmission mechanism analysis and structural parameter analysis by using the optimal periodic array model; and according to an analysis result, obtaining an optimal structure parameter of asymmetric transmission. The problems of high loss, narrow bandwidth and polarization sensitivity are avoided, and the defects of high preparation difficulty, high cost and poor compatibility caused by a complex geometric structure or a specific material are overcome.

This application discloses an optical module housing and a manufacturing method thereof, an optical module, and an optical communication device. The optical module housing includes a housing body and a plating layer, where the plating layer is located on a surface of the housing body, a roughness Ra of the plating layer at least in a contact area does not exceed 0.6 μm, and the contact area is an area that is of the optical module housing and that is configured to be in contact with a heat sink. According to this application, the roughness Ra of the plating layer in the contact area is set not to exceed 0.6 μm, so that when the optical module is connected to an optical module connector, a gap between the contact area of the optical module housing and the heat sink is smaller.

An example connector assembly includes a cage, a first liquid cooling tray, a second liquid cooling tray, and a pressuring spring. The cage includes a frame and partitioning walls. The frame and the partitioning walls define an insertion space. The first liquid cooling tray is provided to a top of the cage, with a lower surface of the first liquid cooling tray constituting an upper wall surface of the insertion space. The second liquid cooling tray is provided to a bottom of the cage, with an upper surface of the second liquid cooling tray constituting a lower wall surface of the insertion space. The pressuring spring is positioned within the insertion space.

The invention discloses an optical waveguide and a preparation method thereof, relates to the technical field of optics, and is used for solving the problems of high processing difficulty, low yield and high cost of the existing array optical waveguide. The optical waveguide comprises a turning waveguide which is provided with a light incident surface, a first surface, a second surface and a plurality of first light splitting surfaces, the first surface and the second surface are arranged in parallel, the first light splitting surfaces are arranged in parallel, the included angle between the first light splitting surfaces and the first surface is smaller than 90 degrees, and the first light splitting surfaces enable light entering the turning waveguide from the light incident surface to be partially reflected; the reflected light is transmitted to the coupling-out waveguide; the coupling-out waveguide and the turning waveguide are spliced, so that light entering the coupling-out waveguide from the turning waveguide is emitted out of the coupling-out waveguide. The first beam splitting surface of the turning waveguide is not perpendicular to the first surface of the turning waveguide, compared with an existing array optical waveguide, the situation that the perpendicularity precision of the beam splitting surface and the surface of the optical waveguide needs to be strictly controlled in the machining process can be avoided, and therefore the machining difficulty can be lowered, the yield can be improved, and cost can be reduced.

A lighting device for vehicles has a light source and a flat optical waveguide with opposing flat sides and narrow sides connecting them. A front flat side is the light emitting surface for light from the light source entering the flat optical waveguide. The front flat side has dedicated micro-optical elements. The optical waveguide is flexible, and framed on at least the opposing narrow sides by retaining elements such that the optical waveguide has a defined curvature in the assembled state.

The invention relates to the technical field of micro-nano motors, in particular to a preparation method and application of a micro-nano motor for improving oil reservoir exploitation. Due to the wheel shape of the micro-nano motor and the hydrophobic modification effect, the micro-nano motor can move in a high-viscosity oil reservoir environment in oil reservoir exploitation. Under the action of a magnetic field, the micro-nano motor can controllably move in a complex three-dimensional core environment, and the size of the micro-nano motor can be reduced when the micro-nano motor encounters a narrower pore throat, so that the micro-nano motor can smoothly pass through the pore throat. When the micro-nano motor makes contact with crude oil drops, the micro-nano motor can carry the oil drops to move and carry the oil drops to a high-permeability area of the oil reservoir, and the motor carrying the oil drops is extracted to the ground along with displacement fluid, so that the recovery rate of the oil reservoir is increased. Meanwhile, the micro-nano motor can be recycled for multiple times.

To provide a camera built-in type display.SOLUTION: The present application relates to a device and a vehicle having such a device. The device includes a display device (1) and a camera (3). The display device (1) includes a cover glass (7), an LCD panel (2) and a backlight unit. The LCD panel (2) is arranged behind the cover glass (7), the backlight unit is arranged behind the LCD panel (2), and the camera (3) is arranged behind the backlight unit with its field of view facing the backlight unit. The field of view of the camera (3) defines an active area (9) of the camera (3). The backlight unit includes an edge light source (8) and a light guide (5). The camera (3) operates in an infrared wavelength spectrum and the light guide (5) is a light guide (5) having nanostructure (12).SELECTED DRAWING: Figure 1

A connector for connection to a mating connector includes a connector housing having a contact chamber configured to accommodate a contact assembly extending from a contact side toward a mating side, and a secondary retention element having two mounting arms and a securing element disposed therebetween. The connector housing has an access opening. The secondary retention element is movable between a pre-latched and a final latched position. One of the mounting arms has a first latching unit which, in the final latched position, is connected to a first mating latching unit disposed on the connector housing. One of the mounting arms has a locking element extending away parallel to a mating axis, which in the pre-latched position, blocks connection to the mating connector. In the final latched position, the securing element extends through the access opening into the contact chamber and locks the contact assembly in place.

An optical device includes a substrate and a single-mode optical waveguide disposed on the substrate and having a first geometrical width chosen to guide optical radiation in a first optical mode within a given wavelength range through the single-mode optical waveguide. An optical ring waveguide is disposed on the substrate and optically coupled to the single-mode optical waveguide, the optical ring waveguide having a second geometrical width wider than first geometrical width and configured to maintain therewithin optical radiation in the given wavelength range in a second optical mode different from the first optical mode.

The invention discloses a design method and application of an on-chip integrated metasurface with respect to angle multiplexing, which breaks through the traditional multiplexing in the orthogonal x and y directions by exploring and utilizing the direction dependence of circuitous phase manipulation driven by guided waves; by optimizing and introducing roundabout phase responses of other angles, for all pre-designed beam incident angles, different images can be independently coded on different z planes by combining the characteristics of a Fresnel region multilayer z plane, and on-chip total space 3D holography is demonstrated by using a conjugate relationship of optical responses driven by opposite on-chip illumination. A plurality of holographic images can be observed in the whole space. According to the method, a plurality of angles are introduced through calculation optimization, the optical information storage density is greatly improved, the holographic quality represented by the angle multiplexing holography has low background noise and crosstalk, and it is indicated that the method has wide application prospects in the fields of data storage, 3D display and the like.

Systems, methods, and structures for efficiently identifying individual fibers located in a deployed cable that advantageously reduces laborious field efforts while reducing service outage time. The systems and methods locate a targeted fiber in a cable (“Cable ID”) and then identify the targeted fiber (“Fiber ID”) by detecting DFOS signal attentions—without cutting the optical fiber. Two distinct determinations may be made namely, Cable ID and Fiber ID. DFOS operation detects vibration signals occurring along a sensor fiber. As implemented, Cable ID is an interactive-machine learning-based algorithm that automatically locates cable position along a sensor fiber route. Fiber ID detects a signal attenuation by bending a group of fibers with bifurcation to pinpoint a targeted individual fiber within a fiber cable.

To provide a camera built-in type display.SOLUTION: An application relates to a device and a vehicle having such a device. The device includes a display device (1) and a camera (3). The display device (1) includes a cover glass (7), an LCD panel (2) and a backlight unit. The LCD panel (2) is arranged behind the cover glass (7), the backlight unit is arranged behind the LCD panel (2), and the camera (3) is arranged behind the backlight unit with its field of view facing the backlight unit. The field of view of the camera (3) defines an active area (9) of the camera (3). The backlight unit includes an edge light source (8) and a light guide (5). The light guide (5) is a light guide (5) having a microstructure (12). The camera (3) operates in an infrared wavelength spectrum. The light guide (5) includes a camera window (11) having nanostructures (12) in the active area (9) of the camera (3).SELECTED DRAWING: Figure 1

A display apparatus and a light source module thereof including a light guide plate, a first light source and a plurality of optical microstructures are provided. The first light source is disposed on one side of a first light incident surface of the light guide plate, and is adapted to emit a plurality of first light beams toward the first light incident surface. The optical microstructures are disposed on a first surface of the light guide plate, and each has a first optical surface facing the first light source, a first structural surface and a second structural surface. A first included angle provided between the first optical surface and the first surface of each of the optical microstructures gradually changes as a distance from the first surface increases. The first structural surface and the second structural surface of each optical microstructure are perpendicular to the first light incident surface.

The embodiment of the utility model discloses a diffraction optical waveguide and near-eye display equipment, the diffraction optical waveguide comprises at least one layer of waveguide sheet, the waveguide sheet comprises a first surface and a second surface which are parallel to each other along the thickness direction of the waveguide sheet, and the first surface and / or the second surface at least comprises a coupling-in grating and a coupling-out grating; the coupling-in grating is used for coupling image light rays emitted by an optical machine into the waveguide sheet, so that the image light rays are totally reflected to the coupling-out grating in the waveguide sheet and are coupled out of the waveguide sheet through the coupling-out grating; an optical resin material layer is at least arranged in the area where the coupling-out grating is located, the optical resin material layer completely fills a grating groove of the coupling-out grating, and a flat and smooth surface is formed on the side, away from the waveguide sheet, of the optical resin material layer. The diffraction optical waveguide provided by the utility model is light in weight, thin in thickness and good in safety performance.

The invention discloses a diffraction optical waveguide and a near-to-eye display device, and the diffraction optical waveguide comprises a waveguide substrate, the surface of which is provided with a light coupling function region; the light coupling function area at least comprises a coupling-in area and a coupling-out area; an auxiliary structure is arranged in other areas, except the light coupling function area, of the surface of the waveguide substrate, the auxiliary structure comprises a plurality of auxiliary units, and the auxiliary units are used for cancelling reflected light interference formed when ambient light enters the auxiliary structure. According to the technical scheme provided by the invention, unexpected surface reflection generated on the surface of the diffractive optical waveguide can be reduced.

Heterogeneous photonic circuits comprise a gain section optically coupled to a photonics section. The gain section can include at least one gain waveguide which can be formed from a III-V semiconductor material to provide optical gain. The gain waveguide can be coupled to optical components in the photonics section to form an integrated pump module. The photonics section can include a light-generating photonic circuit, which can comprise at least one waveguide doped with a rare-earth ion or transition-metal ion. Output from the integrated pump module and / or the light-generating photonic circuit can be tunable. Tuning can be implemented with feedback control.

A semiconductor device includes a photonic die and an optical die. The photonic die includes a grating coupler and an optical device. The optical device is connected to the grating coupler to receive radiation of predetermined wavelength incident on the grating coupler. The optical die is disposed over the photonic die and includes a substrate with optical nanostructures. Positions and shapes of the optical nanostructures are such to perform an optical transformation on the incident radiation of predetermined wavelength when the incident radiation passes through an area of the substrate where the optical nanostructures are located. The optical nanostructures overlie the grating coupler so that the incident radiation of predetermined wavelength crosses the optical die where the optical nanostructures are located before reaching the grating coupler.

The invention discloses a polarization insensitive filter based on a sub-wavelength grating structure, and belongs to the technical field of integrated photonic devices. The filter comprises an input transition waveguide, a multimode waveguide grating and an output transition waveguide which are connected in sequence. The multimode waveguide grating is composed of a central sub-wavelength grating waveguide and Bragg gratings symmetrically distributed on the two sides, and the effective refractive indexes of TE polarization and TM polarization are equal by adjusting the waveguide width and duty ratio of the central sub-wavelength grating, so that the polarization sensitivity of the device is eliminated fundamentally. And the input / output transition waveguide adopts a transition mode of mixing a tapered waveguide and a sub-wavelength grating waveguide, so that low-loss mode transmission between a straight waveguide and a multimode grating is realized. According to the invention, the anisotropic equivalent medium characteristic of the sub-wavelength grating is utilized, a function of simultaneously and effectively filtering TE and TM polarization is realized, and the filter has the advantages of polarization insensitivity, flexible design, compact structure, simple process and compatibility with a CMOS (Complementary Metal Oxide Semiconductor) process, and has important application value in the fields of optical communication, optical interconnection and the like.

The invention provides a light guide mechanism, comprising: an optical waveguide for conducting image light; the coupling-out grating is located on the surface of the optical waveguide and used for coupling out the image light from the optical waveguide; the first lens is located on one side of the optical waveguide and located on a light path of ambient light, the first lens is provided with a first optical surface deviating from the optical waveguide, the first optical surface is a free-form surface with asymmetric curvature, and the first optical surface is used for adjusting the focusing position of the ambient light. And the direction in which the ambient light is transmitted by the first lens is consistent with the direction in which the image light is coupled out by the coupling-out grating. The invention further provides a display device.

Methods of making optic structures (e.g., microring resonator, meta-elements) include imprinting a first surface of a moldable polymer having at least one inverse micro / nano-feature into a second surface of a first polymeric cladding layer disposed on a second substrate to form at least one trench micro / nano-feature contrapositive to the at least one inverse micro / nano-feature. A liquid polymeric precursor is applied into the at least one trench micro / nano-feature where it is solidified to form a solid polymer. A difference between a first refractive index of the first cladding layer and a second refractive index of the solid polymer is ≥about 0.05. The solid is heated for thermal reflow to define a meniscus followed by applying a second polymeric cladding layer thereon. Organic cladded (e.g., microring resonator) optic structures are also provided, which may have a quality (Q)-factor of ≥about 5×105 around 770 nm wavelength).

The invention discloses an optical computing array based on micro-ring resonators without a free spectral range, which comprises an on-chip wavelength division multiplexing beam splitting array, an on-chip intensity modulation array, two groups of on-chip wavelength division multiplexing beam combining arrays and an on-chip balance detector, the on-chip wavelength division multiplexing beam splitting array and the on-chip wavelength division multiplexing beam combining array are respectively composed of a group of multiple FSR-free MRRs which share the same bus optical waveguide, each resonator corresponds to an independent wavelength channel, and the on-chip intensity modulator array is composed of a plurality of groups of on-chip MZI modulator arrays. According to the optical calculation array implementation method, independent control and coding calculation of different wavelength channels in a broadband wavelength range are realized by utilizing the single harmonic peak characteristic of the FSR-free MRR array and the wide-spectrum intensity modulation function of the MZI unit, the limitation of a free spectrum range on the optical calculation wavelength channel is eliminated, the higher wavelength parallelism is achieved, and the optical calculation array implementation method has the advantages of being simple in structure and convenient to implement. And therefore, the calculation scale is remarkably improved.