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.

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.

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.

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 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.

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 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.

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.

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.