41results about How to "Reduce optical power loss" patented technology

A uniform light spot surface scanning device of a laser cleaning machine comprises a laser output module (10), a gauss-flat top system, a gradually-changing rotating polygonal mirror (50), a drive motor (60) and a collimation focusing lens (70). The gauss-flat top system redistributes the energy of a gaussian laser beam emitted by the laser output module (10) and compresses the diameter of the laser beam at the same time, so that a laser beam with uniform energy is formed; the laser beam irradiates the gradually-changing rotating polygonal mirror (50); the gradually-changing rotating polygonal mirror (50) is driven by the drive motor (60) to rotate so as to make the laser beam form a space angle scanning beam; the space angle scanning beam is refracted by the collimation focusing lens (70) and then forms surface light spots on an object (80) to be cleaned.

A WDM multiplexing / demultiplexing system includes a de-multiplexer configured to separate and guide light beams from an incident ray having a plurality of wavelengths to corresponding lenses on an optical device, a multiplexer configured to guide light beams from optical transmitters having various wavelengths through the corresponding lenses on the optical device and combine the light beams, a lens array including the corresponding lenses to receive and / or transmit the light beams from or to the de-multiplexer and multiplexer, and a light beam collimator configured to function with the multiplexer and de-multiplexer. The light beams received or transmitted by the light beam collimator and the light beams transmitted or received from or to the multiplexer and de-multiplexer are collinear. The light beam collimator and multiplexer / de-multiplexer can be easily positioned to predetermined or designed positions, thereby providing light beams output through the lenses in a plastic optical device. The WDM system advantageously reduces optical signal loss, while increasing the assembly yield.

An optical integrated circuit comprises optical waveguides formed by sequentially stacking a lower cladding layer, a core layer and a upper cladding layer on a substrate, grooves formed by etching the upper cladding layer, the core layer and all or parts of the lower cladding layer close to a end section of the optical waveguide to intercept light transmitted through the core layer of the optical waveguide or to couple light into the core layer, a plurality of bonding pads formed around the groove, micro-mirrors which is inserted into the grooves and cemented thereinto, and have at least one slanted side surface inclined in a range of 30° to 60° with respect to the bottom surface to reflect a light which exits horizontally from the core layer to the groove and turn the path of the exited light vertically toward the upper side of the groove or conversely to reflect light which emitted vertically from an upper side of the groove and turn the path of the emitted light horizontally to couple into the core layer, and active optical elements bonded over the grooves by bonding pads and emits light toward the slanted surface of the micro-mirror or conversely, receives light reflected by the micro-mirror. Such a PLC based optical integrated circuit and a method of manufacturing the same provides a low-cost manufacturing of optical integrated circuits and high quality mirrors for vertical optical coupling scheme.

A WDM multiplexing / demultiplexing system includes a de-multiplexer configured to separate and guide light beams from an incident ray having a plurality of wavelengths to corresponding lenses on an optical device, a multiplexer configured to guide light beams from optical transmitters having various wavelengths through the corresponding lenses on the optical device and combine the light beams, a lens array including the corresponding lenses to receive and / or transmit the light beams from or to the de-multiplexer and multiplexer, and a light beam collimator configured to function with the multiplexer and de-multiplexer. The light beams received or transmitted by the light beam collimator and the light beams transmitted or received from or to the multiplexer and de-multiplexer are collinear. The light beam collimator and multiplexer / de-multiplexer can be easily positioned to predetermined or designed positions, thereby providing light beams output through the lenses in a plastic optical device. The WDM system advantageously reduces optical signal loss, while increasing the assembly yield.

An integrated optical structure includes at least one optical isolator, having a magneto-optical layer, associated with at least one SOA optical amplifier having a waveguide having an n-doped semiconductor layer, a p-doped semiconductor layer, and an active area disposed between the n-doped semiconductor layer and the p-doped semiconductor layer. The optical isolator is disposed between an SOI base and the SOA optical amplifier's waveguide. The optical isolator's magneto-optical layer is disposed between a lower insulating layer and an upper insulating layer. The optical isolator's magneto-optical layer may be a layer of ferromagnetic metallic material, such as a Fe—Co metallic alloy, or a magnetic oxide layer. An optical device includes at least one integrated optical structure.

A dispersion compensation fiber comprises a fiber core and cladding. The fiber core is a core layer mainly doped with germanium and having a positive relative refractive index difference. The cladding covering the fiber core comprises a trench cladding mainly doped with fluorine, an annular cladding mainly doped with germanium, a matching cladding mainly doped with fluorine, and an outermost mechanical cladding in order. Relative refractive index differences of the fiber core and the claddings are respectively: Δ1% being 1.55% to 2.20%, Δ2% being −0.55% to −0.30%, Δ3% being 0.40% to 0.65%, Δ4% being −0.20% to −0.01%, and Δ5% being 0. Radius ranges, from R1 to R5, of the fiber core and the claddings are respectively: R1 being 1.4 to 1.7 μm, R2 being 4.1 to 4.8 μm, R3 being 6.7 to 8.8 μm, R4 being 10 to 17 μm, and R5 being 38 to 63 μm.

The invention provides an initial light source parameter control device for partial coherent light communication in a turbulent atmosphere. The device comprises a signal emission unit and a signal reception unit. The signal emission unit is composed of a laser, a laser modulator, a liquid crystal spatial light modulator, an emission optical system and an adjustable diaphragm arranged in a coaxial manner. A signal generator is connected with a BNC port of the laser modulator through a BNC port. A liquid crystal spatial light modulator drive module is connected with the liquid crystal spatial light modulator through a flat cable. A control computer is electrically connected with the liquid crystal spatial light modulator drive module. The device provided by the invention can measure an atmospheric refractivity structural constant, can calculate the optimal initial beam waist width of an emission light beam and the spatial coherent length of the light beam. By applying the device to a long-distance atmosphere channel wireless laser communication system close to the ground, performances of the communication system can be greatly improved, and the application range of the wireless laser communication system can be expanded.

The invention provides an FTTH (fiber to the home) quick laying system multi-user light distribution unit device which comprises an optical cable, optical terminal boxes, an optical fiber moving connector and tail fibers. The optical cable is used for connecting the tail fiber at one end of the optical cable with the optical terminal boxes, the optical terminal boxes are clamped on the optical cable and connected with an optical fiber in the optical cable and serve as connecting equipment for home-entry fiber jumping during home-entry starting, and an optical fiber adapter is arranged in each optical terminal box; the tail fibers are used for being inserted into a fiber distribution box and are uniform to the optical terminal boxes in number. The multi-user light distribution unit device is used for connecting the optical fiber distribution boxes with user optical modems. Through the technical scheme, FTTH construction steps are simplified, and a project line which is short in overhead construction period, convenient to construct, time-saving, labor-saving and low in optical power loss can be realized.

The invention discloses refractive index matching liquid which includes the following raw materials, by weight, 1-99.9 parts of glycerol and 0.1-99 parts of surfactant. According to the refractive index matching liquid, the glycerol is used as a base solution and the surfactant is used as adjuvant. Therefore, the refractive index matching liquid is good in stability and fluidity, small in surface tension, low in cost, easy to manufacture, and good in using effect.

A beam-splitting integrated optical element including a shell, at least one first lens, and at least one second lens is provided. The shell includes a first lens surface, a second lens surface, at least one first reflective surface, and at least one second reflective surface. A bottom edge of each first reflective surface and a bottom edge of each second reflective surface are not connected to each other. The at least one first lens is disposed on the first lens surface. The at least one second lens is disposed on the second lens surface, and each second lens has a second optical axis. Each second reflective surface is located at at least one side of the corresponding second optical axis and located on a transmission path of only a portion of a first beam. An optical transmitter module incorporating said beam-splitting optical element is also provided.

An optical pickup for recording / reproducing information on / from an optical disc having recording layers, includes a light source; an objective lens for condensing an optical beam emitted from the light source on the recording layer; a photo-detector having a light-receiving section for receiving return light from the optical disc; an optical-path separating unit for separating the optical path of the return light reflected by the optical disc from the optical path of the optical beam emitted from the light source; and a masking member having a masking unit shielding part of a passing-through optical beam, in which the masking unit shields the central region of the optical beam to be incident in the light-receiving section among the optical beams reflected by the other recording layers or surfaces different from the recording layer recording / reproducing information so as not to admit the central region to the light-receiving section.

The invention relates to the technical field of optical fiber communication. The invention discloses a multifunctional optical fiber adapter. An optical assembly accommodating cavity is arranged between an adapter input end and an adapter output end, and an optical assembly with an optical signal processing function is arranged in the optical assembly accommodating cavity. An optical signal processing function module can be integrated in the adapter, so that a plurality of existing optical fiber adapters do not need to be arranged like an existing function processing link, the function processing link in which the optical fiber adapter is used for a single optical fiber to a single optical fiber or used for a single optical fiber to a plurality of optical fibers can be greatly simplified,nodes through which optical signals pass are effectively reduced, the optical power loss is reduced, the number of devices is reduced, and the device cost of the whole link is reduced. In addition, the optical fiber adapter also has the advantages of compact structure, convenience in assembly, strong practicability, simple structure and the like, and is convenient for actual popularization and application.

The invention discloses a preparation method for a copper base material photovoltaic welding strip. The preparation method is characterized by specifically comprising the following steps of (1) carrying out cleaning treatment on a copper base material by adopting an acidic solution, and removing dirt and impurities on the surface of the copper base material; (2) carrying out plasma treatment on the surface of the copper base material; (3) depositing a bottoming alloy layer on the surface of the copper base material in a vacuum manner; and (4) adopting a brush electroplating process to carry out brush plating on the surface of the bottoming alloy layer with a layer of solder in order to obtain a finished copper base material photovoltaic welding strip product. The prepared copper base material photovoltaic welding strip is uniform in thickness, flat in surface and good in mechanical property, the resistivity of the welding material serving as a photovoltaic module battery piece is low,and the light absorption power loss of a photovoltaic module can be effectively reduced.

An optical integrated circuit comprises optical waveguides, grooves formed by etching the upper cladding layer, the core layer and all or parts of the lower cladding layer close to a end section of the optical waveguide to intercept light transmitted through the core layer of the optical waveguide or to couple light into the core layer, a plurality of bonding pads formed around the groove, micro-mirrors and active optical elements. Such a PLC based optical integrated circuit and a method of manufacturing the same provides a low-cost manufacturing of optical integrated circuits and high quality mirrors for vertical optical coupling scheme.

The invention discloses a transmitting and receiving separated laser radar optical system, and belongs to the field of laser radar optics. The laser light source emits laser, the laser is shaped and collimated through the beam shaping module, then reflected to the projection unit through the polarization transmission and reflection module, reflected again and then transmitted through the polarization transmission and reflection module, the scanning angle is increased under the effect of the view field expansion unit, and the laser is emitted to a detection target, and then an echo light signal is reflected, the echo optical signal is projected to a photosensitive surface of the photoelectric detector through the convergence unit and the optical filter and is subjected to photoelectric conversion to generate an electric signal, distance information is calculated through time comparison of subsequent data processing and signal emission, and distance information of a target object in a scanning view field range is obtained by combining a scanning angle of a laser beam. Two-dimensional line scanning detection can be achieved by adopting the one-dimensional scanning micro reflecting mirror, and three-dimensional space detection can be achieved by adopting the two-dimensional scanning micro reflecting mirror.

The present invention relates to the technical field of optical fiber communication, and discloses a multifunctional optical fiber adapter, that is, by setting an optical component accommodating chamber between the adapter input end and the adapter output end and building an optical component with optical signal processing function, it can be used in the adapter The optical signal processing function module is integrated inside, so that there is no need to arrange multiple existing fiber optic adapters like the existing function processing links, which can greatly simplify the use of fiber optic adapters for single fiber to single fiber or single fiber to multiple The functional processing link of the root optical fiber effectively reduces the number of nodes that optical signals pass through, reduces optical power loss, reduces the number of components, and reduces the cost of components for the entire link. In addition, the optical fiber adapter also has the advantages of compact structure, convenient assembly, strong practicability and simple structure, which is convenient for practical popularization and application.

The invention discloses a multi-layer conductive transparent film and a method for increasing the light emitting efficiency of light emitting devices. The method comprises the steps of: growing a transparent electrode layer with a high refraction coefficient and an indium tin oxide (ITO) transparent electrode layer from inside to outside in sequence on an epitaxial wafer on a P-type gallium nitride (GaN) surface, wherein the refraction coefficient n of the transparent electrode layer is more than 2.0; and growing the transparent electrode layer by chemical vapor deposition or physical vapor deposition, making each of monomer electrodes into a microsphere or cone shape, and forming all transparent electrodes with high refraction coefficients into periodically arranged arrays by a photolithography-etching method, a selective growth method, a sol-gel method or a self-assembly method. Therefore, the light emitting efficiency of photoelectric devices is increased without the reduction of the electric properties of the photoelectric devices.

A WDM multiplexing / demultiplexing system includes a de-multiplexer configured to separate and guide light beams from an incident ray having a plurality of wavelengths to corresponding lenses on an optical device, a multiplexer configured to guide light beams from optical transmitters having various wavelengths through the corresponding lenses on the optical device and combine the light beams, a lens array including the corresponding lenses to receive and / or transmit the light beams from or to the de-multiplexer and multiplexer, and a light beam collimator configured to function with the multiplexer and de-multiplexer. The light beams received or transmitted by the light beam collimator and the light beams transmitted or received from or to the multiplexer and de-multiplexer are collinear. The light beam collimator and multiplexer / de-multiplexer can be easily positioned to predetermined or designed positions, thereby providing light beams output through the lenses in a plastic optical device. The WDM system advantageously reduces optical signal loss, while increasing the assembly yield.

The invention discloses a single-light-source implantable nerve multipoint synchronous interaction chip. The single-light-source implantable nerve multipoint synchronous interaction chip comprises a substrate, a first insulation isolation layer, a second insulation isolation layer, an excitation light path layer and a single light source emitting module, wherein a recording circuit layer is arranged in the middle of the first insulation isolation layer, the first insulation isolation layer is coated on the surface of the recording circuit layer, the excitation light path layer is fixedly connected onto the top surface of the first insulation isolation layer, the first insulation isolation layer and the excitation light path layer form an interaction layer, the opposite two ends of the interaction layer respectively are extension ends extending out of the edge of the substrate, the second insulation isolation layer is fixedly connected onto the bottom surface of the substrate and the bottom surfaces of the two extension ends of the interaction layer, the single light source emitting module is located on the interaction layer, and one extension end of the interaction layer forms a comb-teeth-shaped probe set. According to the chip with the structure, due to the introduction of a beam splitting type multipoint excitation probe, the number of required light sources is reduced, the energy consumption and the calorific value are reduced, and the stability of continuous operation is improved. Meanwhile, the invention further discloses a preparation method of the single-light-source implantable nerve multipoint synchronous interaction chip, which is simple and feasible.

The invention discloses an inclined float type siphon type weak reflection optical fiber grating rain gauge, which is characterized in that it comprises a rain gauge cylinder with a base, and the rain gauge cylinder is provided with a funnel for receiving rain, between the inner wall of the rain gauge cylinder and the base There is an inclined support plate between them, and a wedge-shaped inclined float is placed on the support plate. One end of the wedge-shaped inclined float is connected to the base, and the other end is connected to the optical fiber. This end of the optical fiber is the light entrance end. The fixed column is connected to each other, and this end of the optical fiber is the light exit end, and a weak reflection fiber grating is arranged in the optical fiber, and the light entrance and light exit are connected to the optical fiber sensor network, and the rain gauge is also connected with a siphon. The rain gauge and the rain gauge array have low cost, simple network layout, good stability, large measuring range and high precision.

The invention relates to a power system relay protection device, in particular to a differential protection device based on optics current sensors to solve the problem that the power loss of a carrier optical signal output by the optics current sensor in cascading is serious. The first optics current sensor and the second optics current sensor are arranged at the two ends of a protection section, a light source is connected with the incidence end of a multimode optical fiber beam splitter through multimode optical fiber, the output end of the multimode optical fiber beam splitter is connected with the incidence end of the first optics current sensor and the incidence end of the second optics current sensor through multimode optical fiber, the emitting end of the first optics current sensor and the emitting end of the second optics current sensor are respectively connected with the incidence end of the multimode optical fiber beam splitter through multimode optical fiber, and the emitting end of the multimode optical fiber beam splitter is connected with the input end of an optical signal processing unit through multimode optical fiber.

This invention discloses an off-axis wave length segment multiplex device including: an off-axis input unit set in one of the two third part with a defined containing space, having a first side part,a second side part opposite to the first part and a shell of two third side parts connecting the first and second side parts, a reflection unit set on the first part and multiple off-axis output unitsarrayed from the input unit to the other third part adjacently in the containing space and opposite to the reflection unit away from the first side part.

The invention discloses a single-beam atomic gravity gradient sensor based on a complementary reflecting mirror, and relates to the field of measuring gravity gradient by atomic interference technology. The present invention includes two first cold atom interference devices (A) and second cold atom interference devices (B) that are connected end to end and have the same structure; each cold atom interference device includes a vacuum container (1), a first laser beam emitter (2), vacuum pump (3), alkali metal sample (4), vacuum separator (5), complementary mirror (6), second laser beam emitter (7), three-dimensional magneto-optical trap reverse magnetic field coil pair ( 8), a bias magnetic field coil (9) and a photodetector (10). The invention makes the physical system and optical system of the sensor change from complex to simple, improves the reliability and has good long-term stability, promotes the miniaturization and application of the atomic gravity gradiometer, and enables the sensor to be used in resource exploration, environmental monitoring and basic physics. important role in research.

The invention discloses a flexible optical fiber cable which comprises a cable core, at least one optical fiber layer located outside the cable core and a protective layer located outside the optical fiber layer; the optical fiber layer is formed by spirally winding a wire outside the cable core, and the wire is an optical fiber or comprises an optical fiber. On one hand, the bending resistance of the optical fiber can be improved, the optical fiber is not easy to break when being bent; and on the other hand, the winding distance can be regulated, and the optical power loss of the optical fiber is ensured to be minimum.

A dispersion compensation fiber comprises a fiber core and cladding. The fiber core is a core layer mainly doped with germanium and having a positive relative refractive index difference. The cladding covering the fiber core comprises a trench cladding mainly doped with fluorine, an annular cladding mainly doped with germanium, a matching cladding mainly doped with fluorine, and an outermost mechanical cladding in order. Relative refractive index differences of the fiber core and the claddings are respectively: Δ1% being 1.55% to 2.20%, Δ2% being −0.55% to −0.30%, Δ3% being 0.40% to 0.65%, Δ4% being −0.20% to −0.01%, and Δ5% being 0. Radius ranges, from R1 to R5, of the fiber core and the claddings are respectively: R1 being 1.4 to 1.7 μm, R2 being 4.1 to 4.8 μm, R3 being 6.7 to 8.8 μm, R4 being 10 to 17 μm, and R5 being 38 to 63 μm.

The invention discloses a polarized light polarization-maintaining transmission device based on a rotary half-wave plate, and relates to the fields of precision measurement and optical communication.The device comprises a turntable, an auxiliary rotator module, a half-wave plate, a reflector, a turntable origin measuring module and a motor control module. The auxiliary rotator module comprises amotor, a first shading strip and a first photoelectric switch. The turntable origin measuring module comprises a second shading strip, a second photoelectric switch and a connecting rod. The motor control module comprises a data acquisition card, a motion controller and a motor driver. The device has the advantages as follows: (1) the mechanical structure is simple, and the expandable space is large; (2) a polarization maintaining function for the transmission of optical signals between a rotating part and a static part is realized; (3) long-term operation is stable, and there is no angle accumulative error caused by rotating speed fluctuation; (4) light propagated in space is transmitted to the turntable from below the turntable, the influence of the environment is small, and the opticalpower loss is low; and (5) the device and the polarized light transmission principle have universal applicability, and can be used in other similar relative rotation devices.

The invention discloses a multipath light splitting adapter for testing optical power for an intelligent transformer station. The multipath light splitting adapter includes a housing, a light splitting adapter circuit board, an input interface, an output interface, input fibers and an output fiber. The light splitting adapter circuit board is arranged in the housing. The housing is equipped with a plurality of wire inlet holes. One end of each input fiber passes through one wire inlet hole to be electrically connected to the light splitting adapter circuit board, and the other end of each input fiber is electrically connected to the input interface. One end of the output fiber passes through one wire inlet hole to be electrically connected to the light splitting adapter circuit board, and the other end of the output fiber is electrically connected to the output interface. The input interface includes multiple input interfaces with different types. The multiple input interfaces with different types are electrically connected to the light splitting adapter circuit board through the input fibers. The work efficiency of optical power testing is increased, and the accuracy of comparison and analysis of test results in the same intelligent transformer station is improved.

The invention discloses a two-dimensional carbon material based planar optical waveguide heating device and a preparation method thereof. The two-dimensional carbon material based planar optical waveguide heating device comprises a two-dimensional carbon material transparent thermal resistor covering a planar optical waveguide and two contact points which connect an exterior power source; the planar waveguide is formed by a substrate and an isolating layer, a core layer and the two-dimensional carbon material transparent thermal resistor which are sequentially deposited on the substrate from top to bottom; the two-dimensional carbon material transparent thermal resistor which covers one side of the upper surface of the core layer of the planar optical waveguide is directly in contact with the core layer; the two contact points are connected at two ends of the two-dimensional carbon material transparent thermal resistor through connecting leads. The two-dimensional carbon material based planar optical waveguide heating device has the advantages of being high in heating efficiency, achieving high heating temperature and being rapid in heating speed, compatible to silicon photonic device preparation process and applicable to a small-sized planar optical wave thermal conduction optical devices.

The invention provides an initial light source parameter control device for partially coherent optical communication in turbulent atmosphere, which is composed of a signal transmitting unit and a signal receiving unit; the signal transmitting unit is composed of a coaxially arranged laser, a laser modulator, a liquid crystal spatial light modulator, Composed of emission optical system and adjustable diaphragm, the signal generator is connected with the BNC port of the laser modulator through the BNC port, the liquid crystal spatial light modulator drive module is connected with the liquid crystal spatial light modulator through a cable, and the control computer and the liquid crystal spatial light modulation The electrical connection of the driver module. The invention can measure the structural constant of the atmospheric refractive index, and calculate the optimal initial beam waist width of the emitted light beam and the spatial coherence length of the light beam through a computer. Applying the invention to a long-distance atmospheric channel wireless laser communication system near the ground can greatly improve the performance of the communication system and expand the application range of the wireless laser communication system.

An optical fiber tactile sensor, comprising a rough contact layer and a sensing layer laminated with the contact layer, the sensing layer comprising: a sensing layer base and a plurality of fixing parts, each adjacent two A vacant area is formed between them, and the vacant area is divided into a first vacant area and a second vacant area; the first single-mode optical fiber, the single-mode optical fiber line segment located in the first vacant area is in a curved state; the fiber grating is prepared in the first a single-mode optical fiber and placed in the second empty area; and a strain isolation component wrapped around a part of the fiber grating to prevent the part of the fiber grating from being strained. It solves the problem that the traditional tactile sensing device cannot know the properties of the object and the slippery feeling during contact, and the bending loss is large.