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.

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 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 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.

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.

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.