42 results about "Fiber optic splitter" patented technology

The invention relates to a self-coherence optical fiber interference device and method for simultaneously measuring morphology and thickness. The device comprises a light source module (1), a measurement light path (2), a compensation light path (3), a spectrograph (4), a mechanical motion module (6) and a data processing module (5), the measuring light path (2) comprises an optical fiber circulator (21), an optical fiber retroreflector (22) and an optical probe (23) and is used for realizing focusing measurement and enabling reflected light of the end face of the optical fiber retroreflector (22) and reflected light of a transparent object to be measured to return; reflected light of the end face of the optical fiber retroreflector (2) and reflected light of the transparent object to be measured form a measuring light beam, and the measuring light beam enters the compensation light path (3); the compensation light path (3) comprises an optical fiber splitter (31), an optical fiber delay line (32) and an optical fiber coupler (33), the measuring light beam is subjected to optical path compensation to generate a compensation light beam, and the compensation light beam and the measuring light beam are combined and input into the spectrograph (4) together.

The invention discloses a frequency stabilized laser based on a double-fiber interferometer. The frequency stabilized laser comprises a narrow linewidth laser, an acousto-optic frequency shifter, a 1 * 2 fiber splitter I, the double-fiber interferometer, a voltage-controlled oscillator and a control module, the output end of the narrow linewidth laser is connected with the input end of the acousto-optic frequency shifter, and the two input ends are connected with the second output end and the third output end of the control module respectively. The driving input end of the acousto-optic frequency shifter is connected with the output end of the voltage-controlled oscillator, and the output end of the acousto-optic frequency shifter is connected with the input end of the 1 * 2 optical fiber splitter I; one output end of the 1 * 2 optical fiber splitter I outputs a frequency-stabilized laser signal, and the other output end of the 1 * 2 optical fiber splitter I is connected with the input end of the double-optical-fiber interferometer; the output end of the double-fiber interferometer is connected with the input end of the control module; the first output end of the control module is connected with the voltage-controlled oscillator, and the second and third output ends are connected with the narrow linewidth laser. According to the invention, laser signal output with high precision and high frequency stability is realized, and the frequency stability of the laser is three to four orders of magnitude higher than that of a narrow linewidth laser.

The invention discloses an optical fiber laser phased array self-adaptive optical system based on an integrated optical chip. The optical fiber laser phased array self-adaptive optical system comprises a self-adaptive optical fiber coupler array, the integrated optical chip, an optical fiber splitter, a photoelectric detector, a control platform and a high-voltage amplifier. The integrated optical chip comprises an optical fiber coupling interface, a waveguide, a phase shifter, a Mach-Zehnder intensity modulator and the like. The adaptive optical fiber coupler array couples incident light to the optical fiber array, and corrects tilt aberration based on an optimization control algorithm to realize efficient adaptive coupling of spatial light to optical fibers; the sub-beams enter an integrated optical chip through an optical fiber coupling interface, phase and intensity modulation is performed on the sub-beams in the optical chip based on an optimization control algorithm, and co-phase synthesis output of the beams is realized; the output light is divided into two paths by the optical fiber splitter, one path is connected with the photoelectric detector for control, and the other path is connected with the application end. Based on light path reciprocity, the system has a transmitting or receiving and transmitting integrated function, and has important application prospects in the fields of space optical communication, laser energy transfer and the like.

A system for calibrating the light sensitivity of a camera includes a light emitter for emitting a light pulse, a fiber splitter for receiving the light pulse via an input port and providing first and second portions of the light pulse to respective first and second output ports, and a light collector for receiving the first portion from the first output port and converting the first portion to a first signal representative of a light characteristic of the first portion. A first fiber optic cable connects the light emitter and the input port, a second fiber optic cable connects the first output port and the light collector, and a third fiber optic cable has a first cable end connected with the second output port and a second cable end for emitting the second portion of the light pulse for capture by the camera. A related method is also provided.

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.

The invention discloses an optical fiber distributed wireless signal coverage system based on an ROF (radio over fiber) technology, and belongs to the technical field of ROF and wireless signal coverage systems. The first optical fiber interface is used for performing radio frequency signal size adjustment on a first wireless signal received from the radio frequency interface, then performing radio frequency amplification to obtain a first downlink electric signal, combining the first downlink electric signal, the OOK modulation signal and the first radio frequency signal together, converting the combined signal into a downlink laser signal, and outputting the downlink laser signal to the first optical fiber interface; the first optical fiber interface is also used for converting a total uplink laser signal input from the first optical fiber interface into an uplink electric signal, sequentially carrying out radio frequency amplification and radio frequency signal size adjustment on the uplink electric signal and then outputting the uplink electric signal from the radio frequency interface; the optical fiber splitter is used for averagely dividing a downlink laser signal input through the first optical port into a plurality of downlink laser sub-signals; and at least one multi-system radio frequency signal remote unit. The system is low in cost, high in speed and low in power consumption.

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.

The present invention belongs to the technical field of radio over fiber (ROF) and wireless signal coverage systems. Disclosed is a fiber-distributed wireless signal coverage system based on an ROF technique. The system comprises an intelligent signal access unit, which is used for adjusting the radio frequency signal size of a first wireless signal which is received from a radio frequency interface, then performing radio frequency amplification to obtain a first downlink electrical signal, combining the first downlink electrical signal, an OOK modulated signal and a first radio frequency signal and converting same into an uplink electrical signal, and outputting same to the first fiber interface, and is also used for converting an overall uplink laser signal, which is input from the first fiber interface, into an uplink electrical signal, performing radio frequency amplification and radio frequency signal size adjustment on the uplink electrical signal, and then outputting same from the radio frequency interface; a fiber splitter, which is used for evenly splitting a downlink laser signal, which is input by means of a first optical port, into a plurality of downlink laser sub-signals; and at least one multi-standard remote radio unit. The present invention is low in cost, high in speed, and low in power consumption.

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.

An OWC subsystem (400) to establish bidirectional optical data communication with a remote OWC subsystem comprises: a bundle of fiber cores (405) arranged in a predetermined shape; an optical transceiver (401) to transmit and receive data beams via a first fiber core; an auxiliary beacon transmitter (402); at least two auxiliary beacon receivers (403) each to receive a respective beacon beam from the remote OWC subsystem via a respective fiber core; the fiber splitter (404) to split a beacon beam from the auxiliary beacon transmitter (402) into at least two transmit beacon beams and provide each of these transmit beacon beams to a respective fiber core; and a collimator (407) to focus the data and / or beacon beams from the remote OWC subsystem towards a common end core face (406) of the bundle (405) and collimate the data and / or transmit beacon beams from the common end core face (406).

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 present invention belongs to the field of additive manufacturing technology and discloses a device and method for collecting laser energy deposition spectrum signals based on photomultiplier tubes. A collimator is connected to the laser cladding head of a laser energy deposition forming system. The input end of a first single-channel optical fiber is connected to the output end of the collimator, and the output end of the first single-channel optical fiber is connected to the input end of a fiber optic splitter. The fiber optic splitter has at least two output ends, each of which is connected to a second single-channel optical fiber. The output end of each second single-channel optical fiber is connected to a narrowband filter. A photomultiplier tube is disposed behind each narrowband filter, and the output end of each photomultiplier tube is connected to a digital acquisition card. The present invention solves the problems of current spectrometers with low sampling frequencies, poor sensitivity in weak plasma conditions, weak effective spectral signals, external signal interference, and insufficient refinement capabilities of wide-band photoelectric sensors.

The utility model belongs to the field of optics, and discloses an optical module system for a pooct detection device, which comprises a shell, a first optical path assembly, a second optical path assembly, a third optical path assembly, a fourth optical path assembly, a first dichroscope and an optical fiber splitter are arranged in the shell, the first optical path assembly and the second optical path assembly form a reflection mechanism, and the second optical path assembly and the fourth optical path assembly form a second dichroscope. The third light path assembly and the fourth light path assembly form a transmission mechanism, each light path assembly comprises a light source, a condensing lens, an optical filter and a reflection unit which are sequentially arranged, the reflection units in the first light path assembly and the third light path assembly are reflectors, and the reflection units in the third light path assembly and the fourth light path assembly are second dichroscopes. According to the utility model, multi-channel narrow-band light source output can be provided according to requirements, and a multi-channel optical fiber splitter is externally connected. The light source wave band can be selected and adjusted, and multiplexing of a single light source is achieved.

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.

An integrated Passive Optical Network (PON) chassis architecture is provided for data center networks. The chassis includes a housing configured to connect on top of a rack; a plurality of modules that are selectively insertable in the housing, each of the plurality of modules supporting one or more Optical Network Units (ONUs) or Optical Network Terminals (ONTs) for operation in a Passive Optical Network (PON); and a fiber splitter configured to optically connect to each of the plurality of modules and to a PON distribution network that connects to one or more Optical Line Terminals (OLTs).

In one instance, a fiber distribution hub for use in a passive optical network includes a cabinet having an interior space and a vertical cable management tower extending vertically from a bottom portion of the cabinet or cabinet frame and having a plurality of cable management spools. The vertical cable management tower is coupled to the cabinet or cabinet frame to define a splitter area to one side and a storage area to another side. The hub further includes a plurality of storage spools coupled to the cabinet or cabinet frame in the storage area and a plurality of distribution cables introduced into the interior space of the cabinet and having distribution fibers formed into a plurality of fiber groups at distal ends of the distribution fibers. The plurality of distribution cables is positioned to drape over one or more of the plurality of storage spools for storage until use.

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 present disclosure describes an apparatus to measure electrophoretic mobility. In an embodiment, the apparatus includes a laser, a fiber splitter optically coupled to the laser, a polarization maintaining acousto-optic modulator optically coupled to a sample arm output of the splitter, a sample cell to contain a sample and optically coupled to an output of the acousto-optic modulator, a polarization maintaining combiner optically coupled to a reference arm output of the splitter and to an output of the sample cell, a photo detector to detect light outputted from the combiner, a radio frequency source electrically coupled to an input of the acousto-optic modulator, and a demodulator electrically coupled to an output of the photo detector and electrically coupled to an output of the radio frequency source, to output in-phase data and quadrature phase data to be analyzed for shifts in frequency to measure electrophoretic mobility in the sample.

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.

This invention discloses an XGS-PON uplink data stream signal testing device, system, and method. The device includes: a 1-to-2 fiber optic splitter, a wavelength division multiplexing (WDM) device, an adjustable optical power attenuator, a signal converter, and an oscilloscope. The main fiber port of the 1-to-2 fiber optic splitter is connected to the XGS-PON ONU fiber optic cable; one fiber optic port of the 1-to-2 fiber optic splitter is connected to the optical module fiber optic cable of the XGS-PON OLT device; the other fiber optic port of the 1-to-2 fiber optic splitter is connected to the input fiber optic cable of the WDM device; the output of the WDM device is connected to the input fiber optic cable of the adjustable optical power attenuator; the output of the adjustable optical power attenuator is connected to the input fiber optic cable of the signal converter; the first input of the oscilloscope is electrically connected to the output of the signal converter, and the second input of the oscilloscope is externally connected to the optical module of the XGS-PON OLT. This invention adjusts the signal emitted by the XGS-PON OLT to adapt to the parameters of different module manufacturers by measuring the positional relationship between the uplink data stream signal and the SD control signal of the optical module.