25 results about "Fiber optic splitter" patented technology

This invention discloses a method and system for measuring the frequency response of an electro-optic modulator based on a spectral analyzer. The system includes a laser, a 95:5 single-mode fiber splitter, an optical power meter, an electro-optic modulator, a control power supply, an RF signal generator, and a spectral analyzer. The measurement method includes the following steps: calculating a calibration factor to correct optical power drift through optical path splitting, driving the modulator by applying several discrete single-frequency RF points, and measuring the carrier power P0(f) using the spectral analyzer. i ) and the first-order sideband power P1(f i ), and determined by the power ratio R(f) i )=10 (P1‑P0) / 10 Combining the Jacobi–Anger expansion / Bessel function relation, the phase modulation index β(f) is solved by inverse solution. i Then, the phase transfer function H(f) at each frequency point is calculated and fitted. i The continuous frequency response S of the modulator is obtained. 21 This invention simplifies the testing process, reduces reliance on high-speed photodetectors and vector network analyzers, and enables high-precision electro-optic response testing of electro-optic modulators at high frequencies.

The application provides a demodulation system and method of a strong-weak fiber grating hybrid network, which comprises: an upper computer for generating an optical control signal, a modulation control signal and a signal collection signal; an optical signal generation unit for outputting a sweep continuous light signal in response to the optical control signal; a fiber splitter for dividing the sweep continuous light signal into a first continuous light signal and a second continuous light signal; a pulse modulation unit for modulating the first continuous light signal to obtain a pulse light signal in response to the modulation control signal; a weak fiber grating sensing module for generating a first electric signal based on the pulse light signal; a strong fiber grating sensing module for generating a second electric signal based on the second continuous light signal; and the upper computer for positioning and demodulating the first electric signal and the second electric signal in response to the signal collection signal. The application realizes the demodulation of the strong-weak fiber grating hybrid network by a single system, and can simultaneously perform a large-capacity, long-distance sensing task and a single-point sensing task.

Systems, assemblies, and methods for selectively defining optical fiber splitter ratio outputs within an enclosure are provided. The system includes an enclosure comprising a feeder cable with a plurality of main optical fibers that are each connected to either an adapter port or to a splitter that is then connected to split adapter ports. Intermediary connectors are selectively connectable to the adapter ports or split adaptor ports, and the intermediary connectors are connected to additional splitters by intermediary optical fibers. The additional splitters are then each connected to distribution optical fibers, which are connected to sets of distribution ports. The sets of distribution ports are positioned in a panel of the enclosure and accessible for connection to downstream installation optical fibers. Various optical splitter ratio outputs for the distribution ports are selectable depending on which adapter ports the intermediary connectors are connected to.

The application discloses a kind of linear frequency modulation signal generating device and method, including integrated mutual injection laser for generating single periodic state optical signal, optical signal is divided into two beams by optical fiber splitter, one of which sequentially passes through short delay unit, first photoelectric detector and then enters first electric coupler, the other sequentially passes through long delay unit, second photoelectric detector and then enters first electric coupler, the electric signal synthesized by the first electric coupler is amplified by the radio frequency power amplifier and then input into the electric splitter and divided into two ways, one of which outputs linear frequency modulation signal, the other is coupled with driving signal input into the second electric coupler and then directly modulated onto integrated mutual injection laser.The application can generate linear frequency modulation signal with high stability, high purity and large time-bandwidth product, and the structure of the device is exquisite, easy to integrate and low in cost.

The utility model discloses an optical fiber splitter supporting three-axis fine tuning and free gating, which is characterized in that a plurality of optical fiber flanges are matched with a splitting device to form a plurality of coupling channels and can be connected with a plurality of optical probes at the same time; different optical probe signals can enter the spectrograph by switching different channels so as to achieve the purpose of rapidly detecting sample information of different production lines, fine adjustment on the X-axis and the Y-axis can be achieved through the arrangement of the adjusting device after the optical fiber flange is installed, then the actual position and the theoretical position of the optical fiber flange are calibrated, and the detection accuracy is improved. According to the optical fiber branching device, the problem of signal attenuation is effectively avoided, meanwhile, position adjustment of the branching device on the Y axis is achieved through arrangement of the Z-axis adjusting mechanism, so that position adjustment of the parabolic mirror is achieved, focal length adjustment is achieved by adjusting the distance between the parabolic mirror and the optical fiber flange, and then the transmission quality of light beams between the optical fiber flange and the parabolic mirror is guaranteed.

The application discloses a kind of multi-channel grating array optical fiber vibration sensing system, its pulse light source module output delay is ts pulse light signal p1 and p2;Pulse light signal p1 and p2 form pulse light sequence signal in phase modulation unit;Multi-channel optical fiber splitter divides pulse light sequence signal into multiple power equal sub-pulse light sequence signals;Each pulse signal in each sub-pulse light sequence signal encounters each grating in corresponding grating array sensing optical fiber and is reflected;Each grating array sensing optical fiber reflected pulse signal is output to corresponding multi-channel photoelectric conversion module by multi-channel optical fiber splitter and is converted to corresponding sensing electric signal by photoelectric signal conversion;Signal processing module carries out phase demodulation processing to sensing electric signal.The application improves the signal-to-noise ratio of system while not amplifying reflected signal, and only needs to collect single-channel signal for demodulation of each grating array optical fiber, which reduces system cost and complexity.

The application discloses a kind of fast regulation pulse output power's fiber laser device and laser radar, fiber laser device includes seed light source, wave division multiplexer, amplifier, demultiplexer, fiber optic splitter, power monitoring circuit, signal processing circuit, laser main control circuit and seed drive, laser main control circuit is connected with seed drive and signal processing circuit, seed drive is connected with seed light source, power monitoring circuit is connected with fiber optic splitter and signal processing circuit.The signal light generated by the first seed light source and the second seed light source in the application is first passed through the wave division multiplexer and then sequentially enters the multi-stage fiber amplifier and the demultiplexer, and then is divided into two output lights, one of which is passed through the fiber optic splitter to enter the power monitoring circuit to achieve the purpose of monitoring the main output power, and then the main output power is adjusted according to the size of the main output power to ensure the stability of the main output power of the laser, and the cost is controllable.

This invention proposes an intelligent monitoring system for underground coal mines. It utilizes technologies such as fiber optic networking, wireless communication, positioning, digital image processing, and artificial intelligence. Through integrated system networking and real-time intelligent monitoring of sensor installation status, it achieves intelligent monitoring of the underground coal mine system. The intelligent monitoring system includes a monitoring server, a positioning server, at least one positioning substation, at least one intelligent inspection terminal, at least one monitoring substation, at least one fiber optic splitter, and at least one intelligent environmental monitoring device. The system supports real-time inspection and monitoring of the entire mine environment, sensor status monitoring, and spatiotemporal synchronization of environmental and geological exploration data. It solves existing problems in underground coal mine monitoring systems, such as equipment compatibility, sensor location monitoring, sensor calibration monitoring, and sensor data monitoring, and has broad application and promotion potential.

The present disclosure describes an apparatus for measuring electrophoretic mobility. In one embodiment, the apparatus comprises: a laser; a fiber optic splitter optically coupled to the laser; the polarization maintaining acousto-optic modulator is optically coupled to the sample arm output end of the splitter; the sample cell is used for containing a sample and is optically coupled to the output end of the acousto-optic modulator; a polarization maintaining combiner optically coupled to the reference arm output of the splitter and to the output of the sample cell; a photodetector for detecting the light output from the combiner; the radio frequency source is electrically coupled to the input end of the acousto-optic modulator; and a demodulator electrically coupled to the output of the photodetector and to the output of the radio frequency source to output in-phase data and quadrature-phase data of a frequency offset to be analyzed to measure electrophoretic mobility in the sample.

The utility model discloses a novel optical fiber splitter, which comprises a shell, an end cover and an optical splitter, one end of the shell is provided with a coaxial single threading hole, the other end of the shell is an open end, and a mounting structure is arranged in the shell; the end cover is detachably connected with the open end of the shell, and a plurality of branch threading holes are formed in the end cover; the optical splitter comprises an optical splitter body, the optical splitter body is detachably and fixedly connected with the interior of the shell through a mounting structure, one end of the optical splitter body is provided with a main optical fiber cable penetrating through the single threading hole, and the other end of the optical splitter body is provided with a plurality of branch optical fiber cables penetrating through the branch threading holes; and a protection assembly is arranged on the outer side of the main optical fiber cable and the single threading hole of the shell. According to the utility model, through the built-in installation structure of the housing, the optical splitter body can be quickly disassembled and fixedly connected without the help of extra tools, and the installation reliability of the optical splitter is improved; the protection and waterproof effects of the main optical fiber cable in the single threading hole are improved through the protection assembly, so that the connection and installation of the optical splitter are convenient and reliable.

The application provides a kind of optical fiber array direct injection type optical guidance control semi-physical simulation system and method, including the following: laser connects optical fiber shunt; Optical fiber shunt connects energy control module; Energy control module connects optical fiber array integrator; Optical fiber array integrator is installed on the focal plane of collimating optical lens by optical fiber joint; Collimating optical lens is installed in front of the optical system of test optical guidance control system; Test optical guidance control system is installed on flight turntable; Flight turntable connects real-time simulation control system; Real-time simulation control system connects scene generation computer; Scene generation computer and energy control module drive connection; Laser source, optical fiber shunt, energy control module, optical fiber array integrator, real-time simulation control system and scene generation computer are located below flight turntable. The application adopts directly test optical guidance control system before installing large field of view optical target simulator, compact structure, and carries out semi-physical simulation.

The application provides a fiber vortex random laser integrated with multiple orbital angular momentum modes and a preparation method thereof, and a vortex random laser generating device and method, and belongs to the technical field of lasers; the problems of the existing vortex random laser, i.e., the radiation direction to be optimized and the system integration to be strengthened, are solved; the fiber vortex random laser integrated with multiple orbital angular momentum modes comprises a microfluid channel, a single-mode optical fiber, an optical fiber splitter and an optical fiber integrated with a spiral phase plate; a gain medium and scattering particles are arranged in the microfluid channel; one end of the single-mode optical fiber is fixed in the microfluid channel; the other end of the single-mode optical fiber is coupled with an end face of the spiral phase plate of the optical fiber integrated with the spiral phase plate through the optical fiber splitter; the spiral phase plates of different optical fibers integrated with the spiral phase plates carry different topological charges, and the vortex random lasers carrying different orbital angular momentum modes are formed; the application is applied to the random laser.

Examples of a fiber optic temperature control system is provided. The fiber optic temperature control system comprises two or more independent temperature measuring system combined into single fiber optic probe. The fiber optic temperature control system comprises at least one temperature control measuring system and an overtemperature measuring protection system. The least one temperature control measuring system comprises a first temperature controller, a first opto-electronic converter with a first light source, a first detector and a first processor, and a first fiber optic bundle with a plurality of optical fibers to provide temperature measurement from at least one point. The over temperature measuring protection system comprises a second controller, a second opto-electronic convertor with a second detector and second processor, and a second fiber optic bundle with a plurality of optical fibers. A splitter coupled to the first and the second fiber optic bundles to physically separate the first and the second fiber optic bundles into a first and a second independent optical guiding channels enclosed by the single probe. A thermographic phosphor is provided at a distal end of the probe so that at least two independent temperature measurements are provided using a single fiber optic temperature sensing probe.

1. Name of the product in this design: Optical fiber splitter box (compact type). 2. Application of this design: This design is used for optical fiber splitting. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention discloses an energy storage battery multi-point gas detection system based on a hollow-core optical fiber photo-thermal spectrum, relates to the technical field of gas detection, and solves the problems that two technologies of time division multiplexing and frequency division multiplexing are difficult to meet the requirements of cost, reliability, detection efficiency and the like at the same time. The device is composed of a detection laser, a pump laser, a wavelength division multiplexer, an optical fiber circulator, an optical fiber splitter, an HCF gas detector, a matching interferometer, a photoelectric detector and a signal demodulation and control unit. According to the technical scheme, the gas signals measured by the plurality of gas sensors can be demodulated through the space division multiplexing technology, and the gas information of each monitoring point is accurately obtained, so that the dynamic real-time monitoring of multi-point gas in the battery is realized. The abnormal gas change can be captured in time, high-precision and real-time data support is provided for fault prediction, safety evaluation and performance optimization of the energy storage battery, and the safety and operation efficiency of a battery system are effectively improved.

An optical splitter module for splitting an input signal from an input optical fiber is provided. The optical splitter module includes the input optical fiber, output optical fibers, and a splitter device configured to split the input signal from the input optical fiber into a plurality of output signals that are each directed into one of the output optical fibers. The optical splitter module also includes a fanout device defining openings that are each configured to receive one of the output optical fibers. The optical splitter module defines an internal volume and an exit cavity. The input optical fiber, the output optical fibers, the splitter device, and the fanout device are each received in the internal volume. The fanout device defines a side length, the exit cavity defines a width, and the side length of the fanout device is greater than the width of the exit cavity.

The utility model provides a box type optical fiber branching device relates to optical fiber branching device field, including protection box body, be provided with convenient maintenance mechanism on the protection box body, the front of protection box body is provided with protection mechanism, convenient maintenance mechanism includes hidden inner box, the side of hidden inner box fixed mounting protection box body inner wall, the bottom of hidden inner box inner wall is fixedly installed with no. The overall design of convenient maintenance mechanism, after the closure of the cover plate in the top of protection box, the user can pull the compression solid bar from the pull ring, make the compression solid bar move up to the top of the cover plate, then can 90 degree rotation is carried out to the compression solid bar, make the compression solid bar be clamped in the top of the cover plate with the elastic force of no.

1. Name of the product in this design: Fiber Optic Splitter. 2. Purpose of this design: This design is used to split a single optical signal into multiple transmission paths. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model belongs to the technical field of environmental monitoring, and particularly relates to a distributed ammonia gas leakage monitoring system, which comprises a laser driving module, a laser, an optical fiber splitter, an optical fiber absorption cell, an optical switch, a photoelectric detector, a photoelectric signal processing module and a display alarm module, the laser driving module is connected with the laser, and an output port of the laser is connected with an input port of the optical fiber splitter; the optical fiber splitter is provided with a plurality of output ports, and each output port is connected with an input port of an independent optical fiber absorption cell; the input port of the optical switch can be selectively connected with the output port of any optical fiber absorption cell; and the output port of the optical switch is connected with the input port of the photoelectric detector. The distributed ammonia gas leakage monitoring system can quickly and effectively monitor the ammonia gas concentration at multiple positions, is high in detection precision, short in response time, free of interference of other gases, long in service life and very suitable for ammonia gas leakage monitoring of an ammonia fuel ship.

The utility model relates to the technical field of optical fibers, in particular to a wiring panel and an optical fiber branching box, which comprises a concave plate, a port is arranged on the concave plate, a panel body is fixedly connected with a mounting frame corresponding to the port, a plurality of panel main bodies are arranged in the mounting frame, and jumper boxes for jumper connection and distribution of optical fibers are arranged in the panel main bodies; the mounting and dismounting assembly is arranged on the mounting frame, and the mounting and dismounting assembly is convenient for workers to quickly dismount and mount the panel main body; and the fixing assembly is arranged on the panel main body, and the fixing assembly is used for fixing the jumper box. Compared with a wiring panel in the prior art, the wiring panel provided by the utility model has the advantages that through the arrangement of the dismounting assembly and the fixing assembly, a manual screwing mode is abandoned, rapid dismounting is realized, the operation process is simple, convenient and efficient, and the operation time and the labor cost are saved; and meanwhile, the device can adapt to jumper boxes of different specifications, so that the installation stability is ensured, the universality is improved, and the application range is widened.

The utility model provides a kind of optical fiber splitter of convenient wiring, it is related to optical fiber splitter technical field, including the optical fiber splitter body of fixed installation in the inside of shell, one input end and multiple output ends are respectively fixedly installed in the side of the optical fiber splitter body, the inside of shell is rotatably installed with receiving roller, receiving roller includes first receiving roller, connecting shaft, second receiving roller, the left side of first receiving roller is fixedly installed with first runner.The utility model in, by rotating first runner can drive first receiving roller rotation to input fiber line is wound and is received in with input end connection installation, by rotating second runner can drive second receiving roller rotation to multiple output fiber line is wound and is received in with output end connection installation, can make that fiber line is arranged and received, avoid fiber line bending damage to the influence of optical signal transmission, improve user's network experience.

The invention provides a demodulation system and method for a strong and weak fiber bragg grating hybrid network, and the system comprises an upper computer which is used for generating an optical control signal, a modulation control signal and a signal collection signal; the optical signal generation unit responds to the optical control signal and outputs a sweep frequency continuous optical signal; the optical fiber splitter divides the frequency sweeping continuous optical signal into a first path of continuous optical signal and a second path of continuous optical signal; the pulse modulation unit responds to the modulation control signal to modulate the first path of continuous optical signal to obtain a pulse optical signal; the weak fiber grating sensing module generates a first electric signal based on the pulse optical signal; the strong fiber bragg grating sensing module generates a second electric signal based on the second path of continuous optical signal; and the upper computer responds to the signal acquisition signal to position and demodulate the first electric signal and the second electric signal. According to the invention, demodulation of the strong and weak fiber bragg grating hybrid network by a single system is realized, and large-capacity and long-distance sensing tasks and single-point sensing tasks can be carried out at the same time.

It is disclosed a system and method for detecting a displacement or deformation of a portion of a building structure. The system comprises an optical fiber, a first device connected to a fiber's first end and comprising a laser source emitting an infrared radiation, and a second device connected to the fiber's second end and comprising a fiber optic splitter and an infrared detector. The fiber optic splitter receives the infrared radiation from the optical fiber, divides it into an object beam and a reference beam, directs the object beam onto the building structure's portion and directs the reference beam onto the infrared detector, which detects a time sequence of holograms formed by reference beam interfering with object beam scattered by the building structure's portion. A data processing unit reconstructs the time evolution of the deformation or displacement of the building structure's portion by numerically processing the time sequence of holograms.

In the system, a laser device provides a light beam with adjustable wavelength for the system, a current controller is connected with the laser device and provides driving current for the laser device, a temperature controller is connected with the laser device to control the internal temperature of the laser device, a laser frequency locker is connected with the current controller and the temperature controller, and the laser frequency locker is connected with the current controller and the temperature controller to control the internal temperature of the laser device. A feedback control signal is provided for wavelength control of the laser, the optical fiber splitter splits an output light beam of the laser into two beams, the two beams are enabled to respectively enter the solid etalon and the air gap etalon, the air gap etalon is a sensing unit of an FPE sensor so as to realize detection of acoustic signals, the solid etalon is connected with the laser frequency locker through the photoelectric detector, and the laser frequency locker is connected with the laser frequency locker through the photoelectric detector. An input signal for feedback control is provided for the laser frequency locker, the photoelectric detector is connected with the solid etalon and the air gap etalon and converts an optical signal into an electric signal, and the oscilloscope is connected with the photoelectric detector and records a sound signal waveform detected by the air gap etalon.