35results about How to "Good coupling efficiency" patented technology

The invention relates to a parallel optical emission assembly based on a 45-degree fiber array and a manufacturing method thereof. The parallel optical emission assembly comprises the 45-degree fiber array with an MT connector, a ceramic substrate and a VCSEL laser device array, wherein an electrode and a bonding pad are arranged on the ceramic substrate, the VCSEL laser device array is fixedly bonded on the electrode of the ceramic substrate, a bonding pad of a chip of the VCSEL laser device array is connected with the bonding pad of the ceramic substrate in a gold wire bonding mode, the 45-degree optical reflection surface of the 45-degree fiber array with the MT connector is in one-to-one aligned coupling with the VCSEL laser device array, and the 45-degree fiber array with the MT connector is fixed on the ceramic substrate. During usage, a user only needs to bond the ceramic substrate on a printed circuit board (PCB) of the user, driving signals of the VCSEL laser device array are connected with the bonding pad on the ceramic substrate in a routing mode, high-speed signals can demodulate and drive the VCSEL laser device array, parallel electric signals can be converted into parallel optical signals, and the parallel optical signals can be output to the standard MT connector through direct coupling of the 45-degree fiber array to be connected with the outside.

The invention discloses a device and a method for measuring the mean concentration of gas in open space. The device comprises a semiconductor laser, a semiconductor laser controller, an optical fiber coupler, an erbium-doped optical fiber amplifier, a photoelectric detector, an optical transceiving antenna, a single-mode optical fiber and a data processing unit. According to the method, a cavity ring-down technology is used to measure the cavity ring-down time of a laser at a wavelength of an absorption spectrum peak of to-be-measured gas and a laser at a wavelength out of the absorption spectrum range respectively, the absorption coefficient of the gas is obtained through calculation, and then the absolute concentration of the gas is solved through calculation according to the relation of the gas absorption coefficient, the absorption section and the concentration; meanwhile, a detection distance calculated through measurement of the time interval of ring-down pulse; the mean concentration of the gas is obtained through calculation on the basis of the known integrated concentration of the gas in the open space and detection distance. The method has the characteristics of high measurement sensitivity and high anti-interference capacity.

The invention discloses an optical coupling lens which is used for realizing optical signal coupling between a light emitting element and a light receiving element. The optical coupling lens comprises a fixed device and a lens unit, wherein the fixed device is provided with a body; the body is provided with a through hole; the lens unit comprises an incident surface, an emitting surface and a reflecting surface; an included angle of 45 degrees is formed between the reflecting surface and the incident surface; the emitting surface is perpendicular to the incident surface; an optical signal emitted by the light emitting element enters the lens unit through the through hole and the incident surface, and is emitted from the emitting surface after being reflected by the reflecting surface; the light receiving element is used for receiving the optical signal emitted from the emitting surface. The invention further provides an optical communication module with the optical coupling lens.

The invention provides a modulus-division multiplexer with low nonlinear coefficients. 6-mode few-mode multiplexing with gradually-varied refractive index distribution, a large effective mode field area, low nonlinear coefficients, high coupling efficiency and a wide working band is realized; in the working band of 1.45mu m-1.65mu m, the coupling efficiency of the modulus-division multiplexer is better than -0.449dB, and a flat characteristic is achieved; and due to the characteristic, the modulus-division multiplexer has wide application prospects in the fields of optical-fiber communication few-mode transmission, Front-haul few-mode transmission and the like.

The invention discloses a combined core adjustment method capable of improving tail fiber coupling of a semiconductor laser, which comprises the following steps of: fixing a lens and a tail fiber by a fixture, wherein the distance between the lens and the tail fiber is the designed optimal coupling distance; performing three-dimensional adjustment on the lens and the tail fiber which are connected to be a whole, detecting the optical power generated by tail fiber coupling at the same time, and fixing and assembling the lens when the optical power detected is maximum; and removing the fixture, adjusting and fixing by adopting a dynamic core adjusting method, and assembling the tail fiber. The lens and tail fiber adjustment adopts the dynamic core adjustment method which makes the coupling power monitored directly, so the optimal coupling efficiency is guaranteed; and compared with the prior art, the coupling efficiency is greatly improved and can be up to 60 percent when the non-spherical single lens is used for coupling.

Embodiments of the present invention provide a dynamically tuned waveguide and a microwave plasma device. The dynamically tuned waveguide comprises a waveguide cavity and an adjustment device, the adjustment device is movably connected with the waveguide cavity, and the field pattern of the waveguide cavity is changed when the adjustment device is adjusted. By changing the distance that the adjustment device enters the inside of the waveguide cavity, the microwave field pattern and reflection coefficient of the microwave being transmitted at a specific frequency in the waveguide cavity can bedynamically changed, and the optimal microwave coupling and transmission efficiency is obtained, so that the transmission loss is minimal when the microwave at the specific frequency is transmitted inthe waveguide cavity. The waveguide provided by the embodiment of the invention can be applied to various occasions where the electromagnetic wave coupling and impedance matching need to be adjusted,and the structure is simple and the implementation is simple.

The invention relates to the polymer ultraviolet or visible light collimator integration component, the chip mould and the production method. On the first and the second substrate set the first, the second, the third, the fourth V-shape slot, the fixed hole, the fixed cross-pin, the first and the second sample cup slot. The fixed cross-pin inserts the fixed hole to form the female die. On the negative die produces the male die and injection mould into the same polymer chip structure with the female mould. The component and the mould is composed of the first and the second substrate or chip, the input and the output lens, the first, the second, the third and the fourth V-shape slot, the input and the output optical fiber, the fixed cross-pin and hole, the first and the second sample cup slot. It solves the problem that biochemical checking wavelength span is limited. The light coupling efficiency and the checking veracity is increased between 220 and 800nm. The polymer double layer V-shape slot realizes the precise localization of the optical fiber and the lens. It decreases the production cycle and the cost and increases the consistence and the reliability.

The invention relates to a space optical isolator based on an oxygen ion implantation terbium gallium garnet optical waveguide and the manufacturing method of an optical waveguide. The method mainly comprises the following steps of forming the optical waveguide in a TGG crystal and realizing a good optical isolation effect. Oxygen ions whose energy is 15 to 17 MeV and dosage is 1 to 10*10 <15> ions / cm <2> are used to bombard the surface of a terbium gallium garnet crystal so as to form an optical waveguide structure. A diamond is used to cut an optical waveguide surface so as to manufacture two parallel grooves, and then a ridge-type optical waveguide structure is formed. Two end surfaces which are vertical to a ridge-type optical waveguide are polished and are taken as an incident end surface and an outgoing end surface. Light is emitted from a laser, and through a polarization maintaining optical fiber, linearly polarized light is acquired; the light is transmitted to an incident optical fiber and is coupled to the optical waveguide through the incident end surface; through the outgoing end surface, the light is coupled to an outgoing optical fiber and is emitted through the polarization maintaining optical fiber; and the stable transmission of the light is realized and a light isolation effect is improved.

The invention, which belongs to the field of the optical device in sub-wavelength photonics, discloses an absorption structure of an infrared quantum well photoelectric detector. The absorption structure for coupling incident electromagnetic waves to a quantum well active region comprises an upper metal layer, an intermediate semiconductor layer, and a lower metal layer. The upper metal layer is a periodic metal square array, the intermediate semiconductor layer is a quantum well layer, and the lower metal layer is a flat metal plate having a surface with the periodic metal square array. According to the absorption structure, on the basis of coupling of a micro-cavity mode excited by a metal microstructure and a hybridized SSPs mode, absorption of infrared radiation by the quantum well active region can be improved obviously and the electric field component (Ez) that is vital to quantum well absorption and is perpendicular to the quantum well plane is effectively enhanced, thereby overcoming a defect that the traditional quantum well infrared photoelectric detector does not absorb incident infrared radiation. With the structure, the detection efficiency of the ultra-far infrared photoelectric detector can be improved obviously.

An optical coupling lens is used for enabling an optical signal to be coupled between a photoelectric unit and an optical fiber. The optical coupling lens comprises a support unit and a lens unit. The support unit is used for supporting the lens unit. The support unit is provided with a first clamping portion and a second clamping portion. The second clamping portion is located at one end of the first clamping portion and is vertical to the first clamping portion basically. The second clamping portion is provided with an opening in the middle. The lens unit is provided with a first combination portion and a second combination portion. The second combination portion is provided with a bump corresponding to the opening. The cooperation of the first combination portion and the first clamping portion, the cooperation of the second combination portion and the second clamping portion, as well as the cooperation of the bump and the opening enable the lens unit to be fixed on the support unit. The invention also provides an optical communication module having the optical coupling lens.

The invention provides a low-loss and low-crosstalk gradient refractive index distribution three-mode modulus division multiplexer. The low-loss and low-crosstalk gradient refractive index distribution three-mode modulus division multiplexer is composed of three same transmission channels, wherein one transmission channel is a main transmission channel; the radius of each transmission channel is 20mu m; the refractive index difference between a fiber core and a cladding layer of each transmission channel is 0.0015 and the refractive index of the cladding layer is 1.442524; the refractive indexfrom the central of each channel core to the corresponding cladding layer is changed in a gradient manner; a mode LP01 is directly input into the main transmission channel; mode LP11a and LP11b channels are arranged in x and y directions of the cross section of the main transmission channel; the length of each channel is 33mm and the distance between each channel and the main channel is 6mu m; the coupling efficiency of the multiplexer is better than -0.479dB in a wave range of 1400nm to 1700nm; the refractive index gradient change type distribution, low-loss and low-crosstalk three-mode modulus division multiplexing is realized.

The invention discloses a polyvinylidene fluoride thin film-based magnetic-type capacitive probe, and aims to provide a capacitor probe with high signal coupling efficiency. The polyvinylidene fluoride thin film-based magnetic-type capacitive probe comprises a polyvinylidene fluoride thin film, a conductive rubber gasket, a metal electrode plate and a back panel, wherein the polyvinylidene fluoride thin film is attached onto a surface of an equipment shell, the conductive rubber gasket, the metal electrode plate and the back panel are sequentially laminated on a surface of the polyvinylidene fluoride thin film, a groove body is arranged on the back panel and is used for accommodating the conductive rubber gasket and the metal electrode plate, a NdFeB magnetic snap is arranged at one side,deviating from the equipment shell, of the back panel and is used for absorbing and fixing the equipment shell, the polyvinylidene fluoride thin film is used as a capacitive medium between a measuredequipment shell and a sensor and is used for coupling a grounding transient voltage caused by a local discharging electromagnetic wave, the polyvinylidene fluoride thin film and the equipment shell are connected by a magnetic-type lamination structure in a form of the NdFeB magnetic snap, a resistor and a capacitor form a detection loop, reasonable resistance and capacitive parameters are selectedaccording to a bandwidth range of a post amplifier, and a voltage signal is in coaxially transmitted and is led out of a voltage signal on the resistor.

The invention relates to a coupling method of an optical receiving sub-module of a multiplexing optical module. The coupling method comprises the following steps: S1, a TIA, a PD and a DMUX are fixed on a shell; S2, gold wires are bonded to the TIA and the PD, and the TIA and the PD are powered up through the golden fingers of the shell; s3, an adapter with a collimator is externally connected to the shell, and a light source is connected to the adapter; s4, one path is selected for coupling, the position of one first lens is adjusted firstly, then the position of the adapter is adjusted, then the position of the first lens is adjusted, the positions of the first lens and the adapter are adjusted repeatedly and circularly, and adjustment is stopped until the responsivity of the PD is no longer remarkably increased; s5, the adapter with the collimator is removed, and then the adapter is installed on the shell; and S6, the positions of the other first lenses are adjusted and determined. According to the invention, the coupling efficiency has little dependence on the mounting precision of the PD, and even if the mounting position of the PD has deviation, the optimal point of the coupling efficiency can be found by adjusting the position of the first lens.

The invention discloses projection light source transmission and light mixing and uniformizing system. The projection light source transmission and light mixing and uniformizing system comprises lightsources and optical fiber bundles, wherein the light sources include a red light source (1); a green light source (2) and a blue light source (3), and the optical fiber bundles include a red light optical fiber bundle (4); a green light optical fiber bundle (5) and a blue light optical fiber bundle (6), wherein the red light optical fiber bundle (4); the green light optical fiber bundle (5) and the blue light optical fiber bundle (6) are uniformly polymerized to form a combined light optical fiber bundle (7); the output end of the right side of the light combining optical fiber bundle (7) isan optical fiber emergent end surface (8); and the light combining optical fiber bundle (7) is randomly arranged. According to the invention, the utilization rate of light source energy is improved, the lengths of the optical fiber bundles are adjustable, the optical fiber bundles can be bent at will, and the overall layout is convenient and flexible. The system structure is simple, the optical system is greatly simplified, the production and assembly process is greatly simplified, the requirement for workers is greatly reduced, and the production efficiency is greatly improved.

The invention discloses a semiconductor laser and planar optical waveguide coupling structure, an optical path system and a manufacturing method, and relates to the technical field of semiconductor laser. The coupling structure comprises an input waveguide structure and a parabola shaping structure, the input waveguide structure is located at one end of the parabola shaping structure, and the waveguide structure of the parabola shaping structure is parabola-shaped; the input waveguide structure is tightly attached to the output end of the semiconductor laser, the size of the input waveguide structure is matched with the spot size of the semiconductor laser, and the end, away from the input waveguide structure, of the parabola shaping structure is connected with the optical waveguide transmission structure. The coupling structure provided by the invention is a structure in which the semiconductor laser and the planar optical waveguide are directly coupled, and compared with an optical path coupling structure of a laser-lens-planar optical waveguide device, the coupling structure has the advantages that elements such as a lens are reduced, the optical path structure is simple, the coupling efficiency is high, the assembly process is simple, and the cost is more advantageous; and the coupling structure is suitable for batch production.

An integrated transformer is provided. The integrated transformer includes a first inductor and second inductors. The first inductor includes a first winding having a first outer turn and a second winding having a second outer turn. The second inductor includes a third winding having a third outer turn and a fourth winding having a fourth outer turn. The first and third outer turns substantially overlap, and the second and fourth outer turns substantially overlap. The first and second outer turns are connected to each other through a first segment and a second segment that together form a crossing structure, and the third and fourth outer turns are connected to each other through a third segment and a fourth segment that together form a crossing structure. The first and third segments arein the first metal layer, while the second and fourth segments are in the second metal layer.

The invention relates to a coupling method of an optical receiving sub-module of an optical module. The coupling method comprises the following steps: S1, fixing a TIA, a PD, a DMUX and an adapter on a shell; S2, powering up the TIA and the PD through golden fingers of the shell, connecting a light source through an adapter, and arranging a glass block between the adapter and the DMUX; s3, selecting one path for coupling, fixing the position of one first lens in the light propagation direction of the path firstly, and then adjusting the position of the first lens; s4, adjusting and determining the position of a second lens between the adapter and the glass block; s5, removing the auxiliary coupled glass block, and arranging a third lens, an SOA and a fourth lens on the glass block; and S6, sequentially adjusting and determining the positions of the other first lenses. In the initial stage of coupling, the glass block is adopted to translate an optical path to replace the third lens, the SOA and the fourth lens for coupling, and the glass block is equivalent to the third lens, the SOA and the fourth lens, so that the coupling process is simplified.

The invention provides a wavelength division multiplexing optical assembly based on an arrayed waveguide grating technology. The wavelength division multiplexing optical assembly comprises a laser collimation sub-component, an arrayed waveguide grating sub-component and an output optical fiber, wherein the laser collimation sub-component is formed by solidifying a laser chip and a laser collimation lens array, and the arrayed waveguide grating sub-component is formed by solidifying an arrayed waveguide grating collimation lens array, an arrayed waveguide grating and an arrayed waveguide grating coupling optical fiber lens array. Two discrete modules in a traditional wavelength division multiplexing optical assembly are integrated, so that the development requirement of further miniaturization of the modules is met, materials can be simplified, and the cost is reduced.

An airtight cabin-penetrating optical fiber connector disclosed by the present invention comprises an adapter socket and two plugs, the adapter socket comprises a socket shell, the middle part of the socket shell is provided with a central through hole, and an optical window sheet is fixedly connected in the central through hole. Positioning through holes are symmetrically formed in the socket shell and located on the two sides of the center through hole, and positioning columns are arranged in the positioning through holes. The plug comprises a plug shell, a through hole is formed in the middle of the plug shell, a collimator is arranged in the through hole, and positioning holes are symmetrically formed in the plug shell and located on the two sides of the through hole. According to the airtight cabin-penetrating optical fiber connector provided by the invention, on the basis of ensuring convenient plugging of the connector, the optical window sheet is arranged on the adapter socket, the collimator is arranged on the plug, so that the transmission effect of the optical fiber is ensured, and the optical window sheet and the positioning column are fixed in a welding manner, so that the airtightness of the whole device is ensured.

The invention discloses a high-stability chalcogenide microsphere on-chip coupling device. The high-stability chalcogenide microsphere on-chip coupling device comprises a substrate layer, a lower cladding layer, a ridge optical waveguide, a dielectric layer, a first polymer support layer, a second polymer support layer and microspheres, wherein the upper surface of the substrate layer is contact connection with the lower cladding layer; the upper surface of the lower cladding layer is connected with the ridge optical waveguide; the upper surface of the ridge optical waveguide is in contact connection with the dielectric layer; the first polymer support layer and the second polymer support layer are arranged on the left and right sides of the dielectric layer respectively; the first polymersupport layer and the second polymer support layer are placed on the substrate layer; and the microspheres are placed between the two support layers in a contact manner. A high-stability chalcogenidemicrosphere on-chip coupling device disclosed by the invention is compatible with an existing CMOS process, and has the advantages of high integration degree, high stability and insusceptibility to external air disturbance.

An optical coupling lens is used for enabling an optical signal to be coupled between a photoelectric unit and an optical fiber. The optical coupling lens comprises a support unit and a lens unit. The support unit is used for supporting the lens unit. The support unit is provided with a first clamping portion and a second clamping portion. The second clamping portion is located at one end of the first clamping portion and is vertical to the first clamping portion basically. The second clamping portion is provided with an opening in the middle. The lens unit is provided with a first combination portion and a second combination portion. The second combination portion is provided with a bump corresponding to the opening. The cooperation of the first combination portion and the first clamping portion, the cooperation of the second combination portion and the second clamping portion, as well as the cooperation of the bump and the opening enable the lens unit to be fixed on the support unit. The invention also provides an optical communication module having the optical coupling lens.

The invention discloses a chip array and parallel optical fiber passively-coupled optical assembly which comprises an optical fiber array assembly, a coupling alignment positioning block, a lens array, a chip carrier and a photoelectric chip array. The optical fiber array assembly comprises a fixing base and a plurality of parallel optical fibers. The lens array comprises a lens body, a second lens array face, a first lens array face and a reflection face. The photoelectric chip array is pasted to the chip carrier, the coupling alignment positioning block is positioned on the chip carrier, the lens array is positioned on one side of the optical fiber array assembly, the lens array and the optical fiber array assembly are jointly positioned on the coupling alignment positioning block, the lens array and the coupling alignment positioning block are positioned in the mode that guiding columns are fixedly inserted in guiding holes, and the lens array and the fixing base are positioned in the mode that guiding columns are fixedly inserted in guiding holes. The chip array and parallel optical fiber passively-coupled optical assembly is simple in structure and low in manufacturing cost, high-accuracy and high-quality rapid coupling can be achieved through the chip array and parallel optical fiber passively-coupled optical assembly, and the chip array and parallel optical fiber passively-coupled optical assembly is suitable for various products with the parallel optical fiber technology.

The invention discloses a coupling process monitoring method for antibody coupling latex microspheres, and belongs to the field of immunoassay medical detection. According to the invention, antibody labeling is carried out by utilizing the adsorbability of the fluorescent dye to the antibody, then the uncoupled antibody in the solution is removed, and the real-time monitoring on the coupling efficiency change in the coupling process is realized by observing the change of the fluorescence signal value of the latex microsphere-fluorescence labeled antibody compound at different reaction times; the reaction condition with the optimal coupling efficiency can be found.

The invention provides a sensing element substrate and a display device comprising the same. The sensing element substrate includes a substrate and a sensing element. The sensing element is located on the substrate and comprises a first electrode, a second electrode, a sensing layer, a conductive layer and a first insulating layer. The first electrode is located on the substrate. The second electrode overlaps the first electrode. The sensing layer is located between the second electrode and the first electrode. The conductive layer overlaps the second electrode and is electrically connected to the first electrode. The conductive layer has a first opening which overlaps the sensing layer. The first insulating layer is located between the conductive layer and the second electrode.

The present invention proposes a three-mode mode division multiplexer with low loss, low crosstalk and graded refractive index distribution, which consists of three identical transmission channels, one of which is the main transmission channel; the radius of the transmission channel is 20 μm, and the core and cladding of the transmission channel The refractive index difference is 0.0015, and the cladding refractive index is 1.442524; the refractive index from the center of the channel core to the cladding changes gradually; the mode LP01 is directly input into the main transmission channel; the mode LP11a and LP11b channels are respectively placed in the main transmission channel cross section x and y In the direction, the channel length is 33mm, and the distance from the main channel is 6μm; in the 1400nm‑1700nm band, the coupling efficiency of the multiplexer is better than ‑0.479dB; the three modes of refractive index gradient distribution, low loss and low crosstalk are realized Modulus multiplexing.

The invention discloses an optical coupling lens which is used for realizing optical signal coupling between a light emitting element and a light receiving element. The optical coupling lens comprises a fixed device and a lens unit, wherein the fixed device is provided with a body; the body is provided with a through hole; the lens unit comprises an incident surface, an emitting surface and a reflecting surface; an included angle of 45 degrees is formed between the reflecting surface and the incident surface; the emitting surface is perpendicular to the incident surface; an optical signal emitted by the light emitting element enters the lens unit through the through hole and the incident surface, and is emitted from the emitting surface after being reflected by the reflecting surface; the light receiving element is used for receiving the optical signal emitted from the emitting surface. The invention further provides an optical communication module with the optical coupling lens.

The invention discloses an optical fiber coupling module, which comprises a shell and optical assembles, wherein the shell is provided with optical channels. The optical fiber coupling module is characterized in that a lens is located at a light propagation path of the optical assembly; a hollow socket assembly is connected at the optical channel in a ring manner; a limiting member is located inside the socket assembly, and the limiting member is provided with a through hole which is mutually communicated with the optical channel; and the limiting member comprises a contact surface which prevents an optical fiber jumper from moving, when an external optical fiber jumper is inserted into a cavity of the socket assembly, the end face of the optical fiber jumper is contacted with the contact surface of the limiting member, and light is coupled to the optical fiber jumper through the lens, the optical channel and the through hole. According to the technical scheme disclosed by the invention, the socket assembly is internally provided with the limiting member with the contact surface which has excellent coupling efficiency, the external optical fiber jumper is enabled to acquire excellent light coupling efficiency by being inserted into the bottom part of the socket assembly and arriving at the contact surface, the convenience in light coupling efficiency adjustment is improved, and replacement and maintenance of the optical fiber jumper are facilitated.