917 results about "Fiber array" patented technology

The invention relates to the technical field of structural stress precision measurement, in particular to a distributed optical fiber sensing-based steel structure stress monitoring method, which comprises the following steps of: 1, constructing a sensing optical fiber array in a steel structure node area; 2, injecting optical pulses into the sensing optical fiber array, and synchronously collecting Brillouin frequency shift signals and Raman scattering signals of all points; 3, temperature and mechanical strain are separated based on the reference optical fiber signals, global temperature compensation is adopted for the first optical fiber set, and temperature gradient compensation along the optical fiber path is adopted for the second optical fiber set; 4, decomposing the compensated mechanical strain into multidirectional strain components according to the spatial orientation of the optical fiber, and reconstructing a three-dimensional stress field through strain component fusion; and 5, dynamically judging the damage risk according to the local stress concentration coefficient and the change rate thereof in the stress field. And through the temperature compensation technology, the influence of the environment temperature change on the strain data is eliminated, and the reliability of the monitoring result is improved.

A method of assembling an optical device including: providing a photonic integrated circuit including a plurality of vertical-coupling elements disposed along a main surface of the photonic integrated circuit; attaching an optical subassembly to the photonic integrated circuit; removably connecting a fiber connector to a ferrule frame, in which the fiber connector is attached to an array of optical fibers; aligning the ferrule frame to the optical subassembly using an active alignment process; and securely connecting the ferrule frame to the optical subassembly after the active alignment process.

The invention provides an optical cross system based on silicon-based liquid crystal and a control method, and relates to the field of optical elements, and the optical cross system comprises an optical fiber array, a micro lens array, a collimating lens, a polarization conversion module, a dispersion element, a focus lens group and a liquid crystal spatial light modulator. Optical signals are coupled through the micro-lens array, a divergence angle is compressed, and parallel light beams are formed through the double-agglutination collimating lens; the polarization conversion module separates the light beam into P / S polarized light and unifies the polarization state; the dispersion element separates light beams according to wavelength space, and the focus lens group forms an elliptical Gaussian light spot on the liquid crystal spatial light modulator; the liquid crystal spatial light modulator divides a light spot into a plurality of independent control areas in the long-axis direction, and single-wavelength multi-port output, power proportion regulation and control and monitoring signal extraction are achieved by dynamically modulating the reflection phase of each area. The control method comprises the steps of optical path processing, regionalized phase modulation and real-time monitoring feedback. According to the invention, flexible routing, power balance and lossless monitoring of wavelength channels can be realized.

The invention relates to a tool clamp for an optical fiber array and coupling packaging equipment for the optical fiber array, the tool clamp for the optical fiber array comprises a base, a first clamping device, a second clamping device and a third clamping device, the first clamping device is used for clamping a circuit board, and the second clamping device is used for clamping the circuit board; the first clamping device is used for clamping an optical fiber array, the second clamping device is used for clamping an optical fiber array, the first clamping device, the second clamping device and the third clamping device are sequentially arranged in the length direction of the base, and the third clamping device is slidably arranged on the base and can slide in the length direction of the base. The third clamping device is used for clamping an adapter, and the adapter is connected with the optical fiber array through a tail fiber; the optical fiber array can move to a coupling position on the circuit board under the action of external force, and the optical fiber array can pull the adapter and the third clamping device to slide in the direction close to the second clamping device through the tail fiber in the moving process.

The invention provides a pluggable optical interface structure, and relates to the technical field of optical device packaging, and the pluggable optical interface structure comprises a substrate which is at least provided with an optical chip, and the optical chip is connected with the substrate; and the optical fiber array unit is connected with the optical chip in a positioning and plugging manner, so that the optical fiber array unit is conducted with the optical chip. The optical fiber array unit and the optical chip are connected in a positioning and plugging manner, so that additional structures and steps required by active coupling such as position adjustment of the optical fiber array unit and the optical chip are not required, and the optical fiber array unit and the optical chip can be aligned in a high-precision and passive coupling manner in a positioning and plugging manner; as a structure required by active coupling does not need to be additionally arranged, the packaging process can be greatly simplified, product production and maintenance of use links are facilitated, the production operation efficiency is effectively improved, the product cost is reduced, and the competitiveness of the product is further enhanced.

Disclosed is a facet coupling fanout device including a body, a first optical coupling side, and a second optical coupling side. The body defines a plurality of multi-channel waveguides therein. The first optical coupling side optically couples the plurality of multi-channel waveguides to a plurality of waveguide cores of a photonic integrated circuit (PIC). The a second optical coupling side optically couples the plurality of multi-channel waveguides to optical fibers of a fiber array unit (FAU). The first optical coupling side defines a first pitch P1 between the plurality of multi-channel waveguides and the second optical coupling side defines a second pitch P2 between the plurality of multi-channel waveguides where P2>P1. The first pitch P1 and the second pitch P2 define a pitch ratioR=P2P1.

The utility model relates to a silicon optical chip compatible with 400G DR4 and 400G FR4. Four first light inlet waveguides are respectively coupled with four light outlet waveguides through four MZ modulators, and two second light inlet waveguides are respectively coupled with input ends of two 1 * 2 equal-ratio optical splitters. And four output ends of the two 1 * 2 equal-ratio optical splitters are respectively coupled with input ends of the four MZ modulators. According to the 400G DR4 silicon optical module, two light emitting assemblies are respectively coupled with two second light inlet waveguides, and a four-channel optical fiber array is coupled with four light outlet waveguides. According to the 400G FR4 silicon optical module, four light emitting assemblies are respectively coupled with four first light inlet waveguides, and an AWG device is coupled with four light outlet waveguides. The silicon optical chip has the beneficial effects that the silicon optical chip can be compatible with the application of a 400G DR4 silicon optical module and a 400G FR4 silicon optical module, so that the cost of a single silicon optical chip is reduced.

The invention relates to a packaging structure and packaging method for an optical module and an optical chip, and the packaging structure comprises a receiving end assembly, a stepped metal heat sink, and a silicon-based optical interconnection assembly which is pasted on the stepped metal heat sink. The silicon-based optical interconnection assembly comprises a laser, a silicon light beam splitter, a lens group, a light transmission compensation gasket, a silicon light modulator and an optical fiber array; coplanar coupling is formed between the laser and the silicon light beam splitter. The silicon light beam splitter and at least part of the collimating lens in the lens group are fixed on the light transmission compensation gasket; the optical fiber array and the silicon light modulator realize waveguide matching in an active coupling mode; the silicon light modulator and the receiving end assembly are separately arranged at least at a preset interval, and the optical fiber array and / or the receiving end assembly are / is covered with a metal isolation cover. According to the invention, the problems of high cost of multiple light sources, easy pollution of an open light path and yield bottleneck caused by low-reliability glue in the prior art are solved, and finally, a packaging scheme which is compact in structure, stable in process and high in mass production is formed.

The invention discloses a multi-optical fiber bundle imaging mode dimension space conversion plasma spectrum analysis system, which is characterized in that a two-dimensional optical fiber array comprising M * N optical fiber micropores is arranged on an optical fiber area array, a one-dimensional optical fiber array comprising M * N optical fiber micropores is arranged on an optical fiber linear array, and an optical fiber surface is connected by adopting M * N optical fibers according to a preset connection relation, the two-dimensional optical fiber array is converted into the one-dimensional optical fiber array, the optical grating disperses light transmitted by the optical fiber linear array, then the light is focused by the imaging lens and then is subjected to optical imaging by the CCD detector, and the spectral data conversion module converts a spectral image into a spectral data graph of each optical fiber channel. According to one-to-one correspondence of optical fibers in the two-dimensional optical fiber area array and the one-dimensional optical fiber linear array, the distribution state of elements in the plasma is reconstructed, and multi-optical-fiber sample element content detection is achieved.

A hollow core fiber array unit includes hollow core fibers each having a terminal end and an adapter that includes grooves. Each groove receives the terminal end of one of the hollow core fibers. The terminal end of the hollow core fibers is spaced from an end face of the adapter. The hollow core fiber array unit includes a spot size converter coupled to the end face of the adapter. The spot size converter includes a plurality of waveguides that correspond to the hollow core fibers. Each waveguide extends from an input at an input end of the spot size converter that is coupled to the end face of the adapter to an output at an opposite output end of the spot size converter. The input of each waveguide includes a first mode field diameter that corresponds to the hollow core fibers and the output includes a second mode field diameter.

The invention discloses a multi-photon optical fiber array endoscopic imaging device and method based on hollow spiral scanning, and belongs to the technical field of biological imaging. The device comprises a laser collimation and beam expansion module, a pulse chirp module, a light beam switching module, an endoscopic detection module and a fluorescence acquisition module. The light beam switching module comprises an optical switch and an optical fiber array composed of at least two low-group-velocity dispersion single-mode optical fibers. The endoscopic detection module drives the optical fiber array to execute hollow spiral scanning through the resonance driver, the track starting point is not located at the view field original point, and central dense sampling is avoided. According to the method, the optical fibers are switched through the optical switch, so that the optical fibers execute spatial non-coincident hollow spiral scanning, multi-photon signals such as fluorescence, second harmonic and fluorescence lifetime are acquired, a central hole is complemented through image reconstruction and fusion, and a complete field imaging result is obtained. Light damage of the central area is remarkably reduced, the imaging resolution uniformity is improved, the fused image is true and reliable based on physical sampling, and the system stability is high.

According to the flexible array type external field program control nerve stimulation device, the preparation method and the application thereof, the flexible array type external field program control nerve stimulation device comprises a flexible substrate layer and a stimulation response fiber array layer, and the stimulation response fiber array layer is prepared from a functional material capable of converting external field energy such as ultrasound, magnetism and light into electric energy; the flexible substrate layer with high flexibility is adopted, so that the flexible substrate layer can be matched with the surface of a nerve target tissue in a conformal manner; the stimulation response fiber array layer integrated on the flexible substrate layer in an array arrangement mode can meet the stimulation spatial resolution of neuron and even sub-neuron precision, has the characteristics of excellent flexibility, biocompatibility, passivity and wireless performance, can provide nerve electrical stimulation signals with high spatial resolution, and can be applied to the field of nerve electrical stimulation. The high-resolution nerve electrical stimulation device can be in conformal fit with the irregular surface of nerve soft tissue, and is suitable for high-resolution nerve electrical stimulation of different parts such as eyes, the brain and peripheral nerves.

The invention relates to an intelligent detection method based on an optical fiber array, and the method comprises the steps: switching the multi-polarization-state light source input of the optical fiber array, and synchronously collecting the output polarization state parameters of each optical fiber; calculating a deviation value of the output polarization state parameter based on the polarization reference value, and when the deviation value is greater than a self-adaptive threshold value, marking the optical fiber array associated region as an abnormal region; identifying a polarization state change mode of the abnormal area, and positioning an abnormal position; generating a damage detection report through the damage confidence scoring model; according to the invention, through switching and synchronous acquisition of the multi-polarization-state light source, dynamic monitoring of the global polarization state of the optical fiber array is realized, and easy-to-omit weak signal change in single-polarization-state detection is captured; automatic marking of abnormal areas and intelligent identification and matching of polarization state change modes are achieved through comparison of the polarization deviation value and the self-adaptive threshold value, automatic classification of damage types is achieved, and the effect of improving the detection precision and reliability based on the optical fiber array is achieved.

The invention discloses a three-color plastic scintillation optical fiber array and a preparation method and application thereof, and belongs to the technical field of plastic scintillation optical fiber arrays. The three-color plastic scintillation optical fiber array is composed of plastic scintillation optical fibers emitting red light, green light and blue light, and the three-color plastic scintillation optical fibers are arranged according to the color rule of a set pattern to form the three-color plastic scintillation optical fiber array. The optical fiber array is simple in structure, low in manufacturing cost and capable of being popularized and applied on a large scale. The three-color plastic scintillation optical fiber array has the characteristics of miniaturization, long-distance transmission and electromagnetic interference resistance, and is very suitable for radiation detection in a complex environment. Meanwhile, the optical fiber array covers red, green and blue wavelength bands, can be matched with more photoelectric detectors with different wavelength sensitivities, can realize high-resolution and long-distance imaging when being applied to X-ray imaging, can form different patterns under X-ray irradiation, and can be widely applied to the fields of radiation detection, industrial detection, medical imaging and the like.

A fiber array unit (FAU) and the method for forming the same are provided. The FAU includes a substrate, fiber grooves, and light guiding elements. The substrate has a first region and a second region which are continuous and connected. The fiber grooves are formed in the first region. The light guiding elements are formed in the second region. The fiber grooves are aligned with the light guiding elements, respectively.

A fiber array unit (FAU) structure and the method for forming the same are provided. The FAU structure includes a FAU, a passive optical component structure, and a carrier board. The FAU includes a fiber holder holding optical fibers. The passive optical component structure includes a reflective layer and a lens layer. The reflective layer includes reflectors adjacent to the optical fibers. The lens layer includes silicon lenses adjacent to the reflectors. The carrier board is configured to support the FAU and the passive optical component structure. The FAU and the passive optical component structure are adjacent to each other. The lens layer is located between the reflective layer and the carrier board.

The invention relates to the field of optical devices, in particular to a manufacturing method of a multi-dimensional close packing optical fiber array, an optical fiber array device and an optical transmission assembly. According to the scheme, a preset number of same-specification optical fibers are selected; then, arranging the optical fibers layer by layer, and temporarily fixing the optical fibers in each layer at the middle position, far away from the end part by a specified length, of the optical fibers by adopting an adhesive tape; completely immersing the free end of each optical fiber into a solvent with strong volatilization and high surface tension, gradually pulling out and horizontally placing; thirdly, after the solvent is completely evaporated and all layers of optical fibers are gathered together, a specified amount of UV light curing adhesive is dropwise added to the outer portions of the optical fibers in the optical fiber arrangement area according to the preset width and cured; and finally, tearing off the adhesive tape and carrying out optical grinding and polishing on the end part of the cured and formed optical fiber to obtain the required multi-dimensional optical fiber array. According to the invention, the problems of high process difficulty and high cost of manufacturing the optical fiber array by a traditional V-shaped groove method are solved.

An assembly for coupling optical fibers to photonic ports on a surface of a photonic integrated circuits includes optical components for directing optical signals between a fiber array unit and the PIC, the optical components including a pair of lens arrays and a polarizing beam splitter. Non-polarization maintaining fibers may be used with the assembly.

The utility model discloses a tool for assembling an optical fiber array by an optical fiber connector, which comprises a base provided with a mounting groove group and a clamping groove, the mounting groove group and the clamping groove are arranged in one-to-one correspondence, the mounting groove group comprises a plurality of mounting grooves, the plurality of mounting grooves are distributed at intervals along the length extension direction of the base, and the mounting grooves are used for mounting the optical fiber array. The clamping grooves are used for installing optical fiber connectors. A plurality of different optical fiber arrays can be conveniently mounted in the mounting groove group through the arranged mounting groove group; the optical fiber connector can be conveniently embedded in the clamping groove to prevent shaking; an adjusting window is arranged on the base to be matched with the mounting groove group and the clamping groove to adjust the optical fiber array and the optical fiber connector simultaneously.

The invention belongs to the technical field of environment monitoring, and discloses an underground water environment monitoring system, which comprises a monitoring well body; the packers can be remotely controlled and are arranged in the depth direction of the monitoring well body; the optical fiber array can invert the seepage velocity field of the stratum around the well by applying controlled thermal pulse and monitoring temperature response; the robot flying shuttle can move in the well, and an in-situ chemical analysis module or a geophysical imaging module can be carried on the robot flying shuttle; the artificial intelligence model runs on the remote cloud platform; the artificial intelligence model can fuse multi-source data, takes a seepage field obtained by active detection and a stratum structure obtained by imaging as physical constraints, and can autonomously dispatch a robot shuttle to execute minute-level in-situ chemical diagnosis or scan inter-well strata. According to the invention, the leap from passive observation to active intelligent exploration is realized, and the monitoring precision and timeliness are significantly improved.

A method of inspecting a Fiber Array Unit (FAU) in a co-packaged optics application using an inspection apparatus, includes: Positioning the FAU in the apparatus. Utilizing a high-resolution CCD imaging system to capture detailed images of the FAU. Employing an IR CCD to assess the core pitch position of the FAU. Measuring the quality of output beams from the FAU's optical fibers using a beam profiler. Actively aligning the FAU using left and right 6-axis alignment units.

The invention discloses epoxy resin for an optical fiber array and a preparation method thereof, and belongs to the technical field of epoxy resin preparation. The epoxy resin for the optical fiber array consists of the following components in parts by weight: 50-80 parts of epoxy resin, 5-30 parts of modified functional resin, 5-10 parts of a toughening agent, 1-5 parts of an auxiliary agent and 5-20 parts of a composite curing agent. The epoxy resin for the optical fiber array prepared by the method has excellent thermal stability and mechanical strength, also has low shrinkage and curing shrinkage stress, and avoids debonding of optical fibers and an adhesive layer.

The utility model discloses silicon optical wafer test equipment. The silicon optical wafer test equipment comprises a camera assembly, a deflection optical path assembly, a probe station and an optical fiber coupling module, the driving assembly is used for driving the probe station and the deflection optical path assembly to move to the lower part of the camera assembly and the optical fiber end part of the optical fiber array in a mutual switching manner; the optical fiber coupling module is used for clamping the optical fiber end part of the optical fiber array; when the probe station moves to the position below the camera assembly, a cross cursor of a camera of the camera assembly is adjusted to be parallel to a cutting channel of the silicon optical wafer; when the deflection light path assembly moves into the imaging view field of the camera assembly, the camera assembly is used for collecting a first lateral image and a second lateral image through the deflection light path assembly and collecting a vertical image; and adjusting the end part of the optical fiber by using an optical fiber coupling module according to the image, so that the end part of the optical fiber and the optical waveguide are aligned and coupled. According to the application, the operation difficulty and the equipment structure for realizing alignment coupling between the optical fiber end part and the silicon optical waveguide are simplified, and the equipment cost is reduced.

The invention provides an automatic alignment coupling method and curing equipment, and relates to the technical field of photoelectron, and the method comprises the steps: obtaining a multi-mode visual image representing a coupling interface of an optical fiber array end surface and a silicon optical chip, executing space registration based on the image, and generating registration data; controlling the multi-degree-of-freedom micro-displacement platform to adjust the pose of the optical fiber array until a preset alignment condition is met; in response to meeting the alignment condition, driving a crimping mechanism to perform crimping and acquiring online detection data in real time; the coupling quality is judged according to online detection data, if the requirement is met, ultraviolet light is emitted for curing to form a connector, otherwise, the optical fiber array is released, and registration is conducted again; according to the method, the precision and stability of automatic alignment are improved, and the production yield is improved.

Expanded beam optical fibers, and methods of forming the same, are disclosed herein. In one example, an optical fiber includes a first optical fiber section with a photonic crystal fiber, a second optical fiber section with a mode field adapter fiber, and a third optical fiber section with a single mode fiber. The first optical fiber section is coupled to the second optical fiber section, and the second optical fiber section is coupled to the third optical fiber section.

The invention relates to a two-dimensional optical fiber collimator array and an optical communication system, the two-dimensional optical fiber collimator array comprises an optical fiber array, a plurality of optical fibers form a two-dimensional matrix, and the end face of the optical fiber array is subjected to one-time grinding and polishing treatment; the glass flat sheet is positioned behind the grinding and polishing end surface of the optical fiber array and is fixedly connected with the optical fiber array; the plano-convex lens array is composed of a plurality of plano-convex lenses, each plano-convex lens corresponds to one optical fiber channel in the optical fiber array and is located behind the glass plain sheet, and each plano-convex lens can be independently adjusted. According to the invention, the problems of complex manufacturing process, poor channel consistency, difficulty in system integration adjustment and the like in the traditional single-fiber collimator assembly mode are solved. Through the unique structural design, the manufacturing efficiency and the use reliability are remarkably improved while the optical performance is ensured.

An assembly for coupling optical fibers to photonic ports on a surface of a photonic integrated circuits includes optical components for directing optical signals between a fiber array unit and the PIC, the optical components including a pair of lens arrays and a polarizing beam splitter. Non-polarization maintaining fibers may be used with the assembly.

An apparatus for aligning a fiber array unit (FAU) connector with a photonic integrated circuit (PIC) includes an aligner having a front section and a bottom section respectively joined with two side sections spaced apart by a first distance. The front section and the bottom section are partially removed to expand a semi-confined open space between the two side sections for receiving a shelf extended out beyond a lens at a side edge of a PIC chip. The shelf has an alignment feature associated with the lens. The front section is configured as a support bar positioned on a surface of the PIC chip. The semi-confined open space between the two side sections allows a body of the FAU connector to be loaded down from top to sit on the shelf in the semi-confined open space and be aligned with the lens through the alignment feature.

The utility model discloses a high-reliability optical fiber array, the high-reliability optical fiber array comprises a substrate, a cover plate and a plurality of optical fibers, the substrate is provided with a plurality of first V-shaped grooves, one side, close to the substrate, of the cover plate is provided with a concave structure matched with the first V-shaped grooves, and the plurality of optical fibers are fixed through the first V-shaped grooves and the concave structure. The span of the first V-shaped groove is larger than the diameter of the optical fiber. The concave structure abuts against the optical fiber, stress is dispersed, single-point stress of contact between the cover plate and the optical fiber is improved, deformation of the cover plate after stress can be reduced, the thickness of an adhesive layer between the cover plate and the substrate is reduced, meanwhile, the span of the first V-shaped groove is larger than the diameter of the optical fiber, the sharp corner position of the substrate is made to avoid the optical fiber, and the stability of the optical fiber is improved. And adverse problems caused by stress concentration are avoided.

The invention belongs to the field of optical fiber manufacturing, and discloses an optical fiber array packaging auxiliary device which comprises a base, a positioning mechanism and an adjusting mechanism, the positioning mechanism comprises a fixing seat, a positioning block and a pressing plate, the fixing seat is fixedly connected to the base and fixedly connected with a first magnetic block, and the positioning block is fixedly connected with a second magnetic block; the positioning block is provided with two groups of open slots, the two groups of open slots are respectively arranged at two ends of the positioning block, the open slots are used for accommodating optical fibers, the pressing plate is rotatably connected to the fixed seat, and the pressing plate can abut against the end surfaces of the open slots; the adjusting mechanism comprises a clamping assembly and a moving assembly, the clamping assembly comprises a driving part, an elastic part and two clamping plates, the driving part is used for driving the two clamping plates to be away from each other, the elastic part is used for driving the two clamping plates to be close to each other so as to clamp the sealing joint, and the moving assembly is used for driving the clamping assembly to move. According to the optical fiber array packaging auxiliary device, the packaging quality of optical fibers can be improved, and the production efficiency is improved.