182 results about "Pigtail" patented technology

The invention provides an LNG ship containment system monitoring system and method based on a fiber bragg grating sensor, and belongs to the crossing field of fiber sensing technology and ship safety engineering, the system comprises a fiber bragg grating sensor and a demodulation device, the fiber bragg grating sensor is used for collecting optical signals, and the demodulation device converts the optical signals into electric signals and processes the electric signals. The fiber bragg grating sensor adopts a double-grating structure and is respectively used for stress monitoring and temperature compensation so as to realize omnibearing real-time monitoring. The fiber grating sensor comprises a tail fiber, a protective tube, a base, and a strain grating, a spring and a temperature grating which are located in the protective tube. According to the invention, the monitoring precision and safety of the LNG ship containment system can be improved; through a double-grating temperature compensation technology, the influence of temperature change on stress measurement is eliminated, and the accuracy and reliability of data are ensured; in addition, stress information in different directions can be obtained in real time through the three-dimensional stress monitoring scheme, the stress condition of the structure is comprehensively reflected, and the flexibility and adaptability of monitoring are improved.

A multicore fiber cable fanout device configured to connect a multicore fiber (MCF) cable comprising M MCFs having N cores with M×N single core fiber (SCP) pigtails is provided. The fanout device can include a housing enclosure and M MCF-to-SCF fanouts within the housing enclosure. The M×N SCF pigtails can be grouped in M×N / K SCF groups containing K SCF pigtails.

The present application relates to a fiber optic gyroscope with stress compensation. In addition to the existing fiber optic gyroscope comprising a light source, a coupler, a Y-waveguide, a fiber optic ring, a detector, and a signal processing circuit, a temperature sensor and a piezoelectric ceramic are added. The coupler is connected to the light source, the detector, and the Y-waveguide, respectively; and the signal control circuit is connected to the detector, the temperature sensor, the Y-waveguide, and the piezoelectric ceramic, respectively. Since the fiber optic ring is wound with a first optical fiber and a second optical fiber, the Y-waveguide and the fiber optic ring are connected via a first optical fiber pigtail and a second optical fiber pigtail, and the first optical fiber pigtail or the second optical fiber pigtail is also wound around the piezoelectric ceramic. During operation, the signal processing circuit controls the piezoelectric ceramic in real time to perform pressure compensation on the first optical fiber pigtail or the second optical fiber pigtail wound around the piezoelectric ceramic based on the sensitive angular velocity information and temperature information of the fiber optic gyroscope, thereby balancing the stress values ​​on both sides and thereby compensating for the zero drift of the fiber optic gyroscope caused by stress.

The invention provides a welding-free redundancy-free optical fiber distribution box, and the distribution box comprises a housing which is provided with a drawing groove, one side of the drawing groove is provided with an opening, and the other side, opposite to the opening, of the drawing groove is provided with a buffer part; the optical fiber is arranged in the drawing box, and the drawing box slides in the drawing groove and can at least partially slide out of the opening; a connector fixing groove is formed in the end, facing the buffer piece, of the drawing box, and an optical fiber connector is connected to the end of the optical fiber and fixed to the connector fixing groove; the optical fiber adapter is connected with the optical fiber connector in an inserted mode, supporting plates are arranged on the two sides of the optical fiber adapter, and the supporting plates abut against the buffering pieces; and the tail fiber joint is inserted into the other end, opposite to the optical fiber connector, of the optical fiber adapter. According to the invention, the problems that the optical fiber is fixed in a welding manner, the expansibility is poor, and a redundant link is required to be arranged, so that the link structure of the distribution box is complicated and the size is large are solved.

The invention discloses a pigtail-free optical module, an assembling method and a using method, optical signals are transmitted through a first lens array, a reflector and a second lens array, then optical fibers are arranged in an MT fixer on the outer side, optical paths are coupled, the optical fibers do not need to be inserted into a shell, the risks of air leakage of welded optical fibers and damage to the optical fibers do not exist, and the service life of the optical fibers is prolonged. The coupling process is simple, the structure has no requirement on the length of the optical fiber, the adaptability is higher, the original metal optical fiber is replaced, and the optical module can be subjected to reflow soldering to realize airtight packaging.

A loop pigtail compensation method for a fiber-optic gyroscope, and a fiber length compensator. The fiber length compensator is fixed on a loop pigtail of the fiber-optic gyroscope, and the fiber length compensator includes a peripheral fiber loop and an expansion-and-contraction shaft core capable of realizing deformation of expanding and contracting; and upon detecting that there is a drift in an output of the fiber-optic gyroscope, a length of the peripheral fiber loop of the fiber length compensator is changed by adjusting a coefficient of linear expansion of the expansion-and-contraction shaft core of the fiber length compensator, so that the compensation for the loop pigtail of the fiber-optic gyroscope is realized, and the problem of low accuracy of online adjustment of the pigtail of the fiber-optic gyroscope is solved.

The invention belongs to the field of quantum precision sensing and measurement, and provides an optical fiber collimator applied to an atom magnetometer and an assembly method of the optical fiber collimator. The optical fiber collimator applied to the atom magnetometer comprises a polarization-maintaining optical fiber pigtail, a lens, a laser homogenizing wave plate, a circular polarization polarizer, a diaphragm and a sleeve, the lens is arranged on the downstream of the polarization-maintaining optical fiber pigtail, the lens is an aspheric lens, the laser homogenizing wave plate is provided with a homogenizing area, the polarization axis of the circular polarization polarizer coincides with the polarization axis of emergent light of the lens, and the diaphragm is arranged in the sleeve. The light source is used for generating circularly polarized light, the diaphragm is used for limiting the shape of an emergent light spot, and the sleeve is used for installing the polarization-maintaining optical fiber pigtail, the lens, the laser homogenizing wave plate, the circular polarization polarizer and the diaphragm. The atomic polarization uniformity can be effectively improved, the response signal of the atom magnetometer is improved, the signal-to-noise ratio of the quantum sensor system is improved, and the quantum sensor system is suitable for being used in a high-precision measurement scene.

The utility model discloses a light source module and a projection display device. The light source module comprises a laser light source; the coupling lens is arranged on an emergent light path of the laser light source, and the light incident side and / or the light emergent side of the coupling lens are / is provided with an aperture diaphragm; and the tail fiber is arranged on an emergent light path of the coupling lens, light emitted by the laser light source is coupled into the tail fiber through the coupling lens, and by setting the type of the tail fiber and designing an optical fiber coupling end face, echoes and stray light generated at the optical fiber coupling end face are reduced, the influence of the echoes and the stray light on output of the laser is weakened and avoided, and the imaging quality is improved.

The present invention discloses an optical fiber system and method for online testing of free water content in aviation fuel. The testing system includes a single-wavelength laser light source with multiple wavelengths, a first optical fiber flange, a hollow-core optical fiber liquid sample cell, a second optical fiber flange, a photoelectric probe with a pigtail, a microfluidic sampling pump, a liquid sample outlet, a constant temperature device, and a host computer. The present invention online measures the dependence of the Mie scattering loss of free water microspheres suspended in a hollow-core optical fiber liquid sample cell filled with aviation fuel on different laser wavelengths to calculate the radius of the free water microspheres in the aviation fuel and the number of free water microspheres per unit volume, thereby measuring the free water content in the aviation fuel. The optical fiber testing system has a compact structure, small size, light weight, and requires a small sampling volume. It can quickly and accurately test free water content and is suitable for real-time online monitoring of trace free water content in aviation fuel.

This invention discloses a 9-cavity mode-locked fiber laser with adjustable parameters based on a liquid crystal phase delay device, belonging to the field of mode-locked laser technology. It includes, along the optical path, a mirror, a polarizing beam splitter prism, a liquid crystal phase delay adjustable waveplate, a Faraday rotator, a liquid crystal phase delay adjustable waveplate, and a polarizing beam splitter prism. A fiber optic loop is provided on one side of the polarizing beam splitter prism, comprising, in sequence, a fiber collimator, a gain fiber, a wavelength division multiplexing-splitter mixer, and a fiber collimator prism. The slow axis of the fiber collimator prism's pigtail is aligned horizontally with the polarizing beam splitter prism prism 2; the slow axis of the fiber collimator prism 2's pigtail is aligned vertically with the polarizing beam splitter prism prism 2. A pump semiconductor laser is connected to the pump input of the wavelength division multiplexing-splitter mixer, and an FCAPC jumper is connected to the signal output of the wavelength division multiplexing-splitter mixer. This enables continuous and rapid adjustment of the laser parameters.

A bend-insensitive multimode optical fiber attenuation test device and method includes a light source, a single-mode or few-mode injection pigtail, a coupling injection device, an optical power detector, and a beam quality analyzer. The light source is connected to the coupling injection device via the single-mode or few-mode injection pigtail, and the coupling injection device and the optical power detector are connected to the multimode optical fiber under test. The beam quality analyzer is connected to the multimode optical fiber under test via a bare fiber adapter. The test device provided by the present invention uses a high-precision five-dimensional adjustment frame to adjust the injection light angle and thus the injection light mode, achieving high flexibility in controlling the target mode during attenuation testing.

The invention discloses a light source module and a projection display device. The light source module comprises a laser light source; the coupling lens is arranged on an emergent light path of the laser light source, and the light incident side and / or the light emergent side of the coupling lens are / is provided with an aperture diaphragm; and the tail fiber is arranged on an emergent light path of the coupling lens, light emitted by the laser light source is coupled into the tail fiber through the coupling lens, and by setting the type of the tail fiber and designing an optical fiber coupling end face, echoes and stray light generated at the optical fiber coupling end face are reduced, the influence of the echoes and the stray light on output of the laser is weakened and avoided, and the imaging quality is improved.

The corn fruit biological information detection device comprises a bottom plate, a waste liquid collection box and a U-shaped detection seat, a detection cavity is formed in an inner cavity of the U-shaped detection seat, a detection optical fiber is arranged on the inner wall of the detection cavity, and a light source, a spectrograph, a single-mode tail fiber and a multi-mode optical fiber are arranged at the two ends of the detection optical fiber respectively. Side frames are installed at the top ends of the outer walls of the two sides of the U-shaped detection base, a top beam is installed between the adjacent side frames, a controller and a flushing mechanism are arranged on the top beam, the flushing mechanism comprises a U-shaped walking frame, a spray head is installed at the bottom of the U-shaped walking frame, and two sets of tooth-shaped plugging plates are arranged at the bottom of the detection cavity; through the action of the light source, the single-mode tail fiber, the spectrograph, the multimode optical fiber and the detection optical fiber, rapid detection of corn fruit biological information is achieved, rapid washing of the detection cavity after detection is completed is achieved, the situation that residual corn fruit extracting solution affects the accuracy of next-time biological information detection is avoided, and the detection efficiency is improved.

A telecommunications rack system includes a first element defining splice locations and a second element defining adapters for receiving connectorized cabling, wherein the first and second elements are positioned on the same rack. A first end of a fiber optic pigtail is spliced at and extends from the splice locations of the first element. A second end is connectorized with a fiber optic connector that is coupled to an adapter of the second element. The pigtail extends between the first and second elements. A cable manager is removably mounted at the side of at least one of the first and second elements. The cable manager defines a U-shaped passage including ends that open toward one end of the elements and a closed end opposite the open ends. The U-shaped passage defines cable pass-throughs adjacent the closed end for transitioning cables from inside the U-shaped passage to an exterior thereof, wherein the connectorized pigtail is passed at least through a portion of the U-shaped passage and out the cable pass-through going from the first element to the second element.

The utility model discloses an adaptive tool for automatic dispensing and bonding of an optical fiber ring, which comprises a tool main body, an optical fiber ring piece, a fiber climbing step and a mounting seat, the tool main body is convexly provided with a mounting ring column, the optical fiber ring piece is arranged on the mounting ring column, the tool main body is provided with a tail fiber ring groove along the peripheral side of the mounting ring column, and the tail fiber ring groove is arranged on the mounting ring column. A plurality of positioning columns are further arranged between the tail fiber ring groove and the mounting ring column, avoiding arc grooves are further formed in the tool body, the fiber climbing steps are symmetrically arranged on any two adjacent avoiding arc grooves, fiber outlet steps are arranged at the end, close to the tool body, of the optical fiber ring piece in a protruding mode, and fiber outlet avoiding grooves corresponding to the fiber outlet steps are formed in the mounting ring column. And the mounting seat is embedded and mounted on the optical fiber ring piece. According to the utility model, the tail fiber ring groove and the avoiding arc groove are introduced and matched with the fiber climbing step, so that the damage risk of the tail fiber in the automatic bonding process is obviously reduced, and meanwhile, the mounting seat is tightly bonded with the optical fiber ring piece, so that the bonding effect is ensured, and the rejection rate and the production cost are effectively reduced.

The utility model belongs to the technical field of optical fibers, and particularly relates to a portable light splitting polarization module for optical fiber ring testing, which comprises a light splitting layer and a polarization layer, the polarization layer is detachably mounted on the upper surface of the light splitting layer, the upper surface of the light splitting layer is provided with a first tail fiber coiling groove, and the bottom of the first tail fiber coiling groove is provided with a first device groove. A plurality of light splitting devices are placed in the first device groove, and an input fiber inlet is formed in the peripheral side of the first tail fiber winding groove; a second tail fiber coiling groove is formed in the upper surface of the polarizing layer, a second device groove is formed in the bottom of the second tail fiber coiling groove, a plurality of polarizing devices are placed in the second device groove, an output fiber outlet is formed in the peripheral side of the second tail fiber coiling groove, a fiber climbing channel is formed in the bottom of the second tail fiber coiling groove, and the first tail fiber coiling groove and the second tail fiber coiling groove are communicated through the fiber climbing channel. The device has the advantages of being convenient to carry and easy to operate.

1. The name of the design product: doll (Huihui). 2. The use of the design product: for dolls, ornaments, hand-made, etc. for entertainment. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: perspective drawing.

This invention relates to fiber optic ring assemblies, specifically to a fiber optic ring assembly and a sealing process method to improve its long-term stability. This addresses the technical problems of existing fiber optic ring assemblies, such as the inability to guarantee the accuracy performance of the fiber optic ring when exposed to air, poor sealing performance at the small holes in the fiber optic ring shell, and slippage of the fiber optic ring and pigtails from the fiber optic ring shell due to weak adhesive. The invention includes a fiber optic ring shell and a fiber optic ring. The fiber optic ring shell includes a fiber optic ring frame and a cover plate, which are sealed together. The fiber optic ring is installed within the cavity formed by the fiber optic ring frame and the cover plate. The invention also includes a flexible absorbent material covering the fiber optic ring. The flexible absorbent material fills the space within the cavity of the fiber optic ring shell, excluding the space occupied by the fiber optic ring. A channel is provided on the fiber optic ring shell connecting the cavity to the outside. At least one pigtail of the fiber optic ring extends from this channel. The channel is sealed.

The invention discloses a pumping source which comprises a pumping source component which comprises a module assembly and a tail fiber, and the module assembly is used for generating laser and transmitting the laser to the tail fiber; the packaging assembly comprises a housing and a radiator, the pumping source component is arranged at the heat exchange end of the radiator, the radiator is used for dissipating heat of the pumping source component, and the housing and the radiator are matched to form a packaging shell used for packaging the pumping source component; and the air guide assembly is arranged on the packaging assembly and is used for guiding the air flow generated by the radiator to the radiating end of the radiator in an inclined direction. Compared with the prior art, a metal tube shell is omitted, the heat dissipation performance of the radiator can be improved on the basis of saving the cost, in addition, through the arrangement of the air guide assembly, heat can be comprehensively and evenly guided out of the radiator by multiple air flows at different inclination angles, and therefore the heat dissipation efficiency is further improved.

This invention discloses a solid-core and hollow-core fiber conversion device, comprising: a dual-spherical lens, a glass tube, a single-mode solid-core fiber pigtail, and a hollow-core fiber pigtail; the dual-spherical lens includes a first end spherical surface and a second end spherical surface, wherein the curvature of the first end spherical surface is less than the curvature of the second end spherical surface; the first end spherical surface of the dual-spherical lens is close to the single-mode solid-core fiber pigtail, and the second end spherical surface of the dual-spherical lens is close to the hollow-core fiber pigtail. Using this structure, the size of the light spot converged by the first end spherical surface is the same as the size of the light spot emitted by the hollow-core fiber pigtail, enabling the conversion of light between hollow-core and solid-core fibers. It also solves the problems of ultra-high loss and extremely low return loss caused by fusion splicing of solid-core and hollow-core fibers, and features a simple and compact structure, low cost, and excellent performance.

The utility model relates to the technical field of gas cylinder water pressure detection, in particular to a pull-out type tail fiber storage device which comprises a box body, a first sliding groove is formed in the box body, a sliding block is installed in the first sliding groove, a drawer is installed on the other side of the sliding block, a feeding mechanism is installed in the drawer, and optical fibers are installed on the surface of a consumable frame in the feeding mechanism. According to the pull-out type tail fiber storage device provided by the utility model, the optical fibers are wound on the consumable frame through the feeding mechanism, so that the technical problems that in the prior art, the optical fibers and optical fiber devices are distributed disorderly, and the internal space of the whole machine is wasted are solved; the utilization rate of the internal space of the optical fiber equipment is improved, the size of the optical fiber equipment is reduced, the optical fiber and an optical fiber device are effectively protected, the optical fiber penetrates through the second through groove to reach the optical fiber hole through the auxiliary mechanism, and the situation that use is affected due to the too small bending radius in the optical fiber drawing process is avoided.

An optical fiber pigtail convenient and fast to identify comprises an optical fiber cable and a sheath, the outer wall of the optical fiber cable is fixedly connected with the inner wall of the sheath, the top of the sheath is connected with a control structure, the front face of the optical fiber cable is fixedly connected with an optical fiber plug, and the outer wall of the optical fiber plug is connected with an opening and closing structure. The upper side and the lower side of the opening and closing structure are connected with curved blocks correspondingly. A user checks the material and the structure inside the optical fiber plug so as to judge the type of the optical fiber pigtail, then the inner wall of a protection pad is attached to the outer wall of the optical fiber plug, meanwhile, the outer wall of the cross rod is connected with the round opening in the right side of the first shell in an inserted mode, and the optical fiber pigtail is inserted into the first shell. The optical fiber plug can be disassembled and assembled without a tool, model identification is facilitated, the use cost of the optical fiber pigtail is reduced, and operation and use of the optical fiber pigtail are facilitated.

The utility model belongs to the field of optical devices, and particularly relates to a single-transmitting single-receiving optical device provided with a tail fiber. The shell is provided with a signal transmitting end, a signal receiving end and an optical fiber adapter; an optical fiber pigtail assembly which is installed on the housing; the signal processing module comprises a first filter and a first reflecting mirror, the first filter and the first reflecting mirror correspond to each other, the optical fiber adapter is arranged corresponding to the first filter, and the optical fiber pigtail assembly is arranged corresponding to the first reflecting mirror. The utility model provides a single-transmitting single-receiving optical device configured with a tail fiber, and aims to solve the problems of large workload and high maintenance cost of operators during signal transmission of a conventional optical device.

The present invention discloses a fiber laser amplifier based on hierarchical heat dissipation, which relates to the field of high-brightness fiber lasers. The fiber laser amplifier comprises: a fiber laser seed source, a pigtail semiconductor pump source, a first-stage fiber oscillator component, and a second-stage fiber laser amplifier component. The semiconductor pump light and the laser seed light are combined and injected into the first-stage fiber oscillator component, and the low-brightness semiconductor pump light is converted into a higher-brightness transition laser through a laser oscillation process with a lower quantum loss. The second-stage fiber laser amplifier component converts the transition laser into the laser seed light and outputs a high-brightness main laser. Based on the configuration of the pigtail semiconductor pump source, the present invention effectively distributes the heat generated by the quantum loss to two-stage components for heat dissipation, while also reducing the heat concentration on the single-stage component and improving the reliability of the amplifier.

The invention discloses a middle and far infrared low-noise ultra-wideband spectrum generating device, which comprises a femtosecond fiber laser, a single-mode ZBLAN fiber, a single-mode InF3 fiber, a first mode field adapter, a hollow-core anti-resonance fiber, a second mode field adapter, a full-positive dispersion chalcogenide fiber and an air chamber which are sequentially arranged along a laser path, and is characterized in that the femtosecond fiber laser is used for outputting laser pulses; the wavelength of laser pulses is larger than or equal to 2.1 micrometers, the pulse width is smaller than or equal to 30 fs, and the average power is larger than or equal to 2 W. A tail fiber of the femtosecond fiber laser, the single-mode ZBLAN fiber and the single-mode InF3 fiber are sequentially welded, and the single-mode InF3 fiber is in mode field adaptive connection with the hollow-core anti-resonance fiber through a first mode field adapter. The hollow-core anti-resonance optical fiber is in mode field adaptive connection with the full-positive-dispersion chalcogenide optical fiber through a second mode field adapter, the single-mode ZBLAN optical fiber and the single-mode InF3 optical fiber are packaged in a gas chamber, and the gas chamber is filled with protective gas. The device disclosed by the invention realizes all-fiber, and can generate an ultra-wideband spectrum which covers a wave band of 3-8 microns and has a low-noise characteristic.

The invention relates to the technical field of communication, and particularly discloses a multi-core optical fiber wavelength division multiplexer, which comprises a double-fiber collimation head, a first wavelength division multiplexer, a second wavelength division multiplexer and a third wavelength division multiplexer, the single-fiber collimating head comprises a single-fiber tail fiber, a second collimating lens and a second sleeve; the filter assembly comprises a filter plate and a protective sleeve; the large sleeve is used for packaging and fixing the double-fiber collimation head, the filter assembly and the single-fiber collimation head; wherein the double-fiber tail fiber and the single-fiber tail fiber are both multi-core optical fibers; a traditional single-core tail fiber is replaced by the multi-core fiber, so that a single device can synchronously process a multi-space channel and a multi-wavelength channel, the fiber core symmetrical arrangement angle of the double-fiber tail fiber is set, the rotation dislocation loss of a reflection light path is reduced, and self-alignment reflection coupling of multi-core signals is achieved without active calibration.

An optical connector includes an optical waveguide device with a first optical port and a fastening structure. The optical waveguide device is able to implement splitting, combining, demultiplexing, multiplexing, multi core-single core conversion, filtering, reflection, spot size conversion, optical path connection / disconnection, optical path direction conversion, or optical power adjustment. The fastening structure is configured to fasten an optical transmission medium. The first optical port is aligned with and connected to the optical transmission medium in the fastening structure. In this application, the optical connector combines functions such as splitting, combining, demultiplexing, multiplexing, multi core-single core conversion, filtering, reflection, spot size conversion, optical path connection / disconnection, optical path direction conversion, or optical power adjustment with a connector function without changing a size of an existing connector, to reduce a size of an optical module and reduce a board area occupied by the optical module.

The utility model discloses a surface array optical fiber collimator, is constituted by mould pressing lens array, a plurality of pigtail, a plurality of connecting pipe or ridge hole plate, one side of lens array is array convex surface, the other side is a plurality of ridge inclined plane, one side end surface of connecting pipe or ridge hole plate and lens array gluing, the other side end surface and pigtail gluing, since every optical fiber collimator is through the precise light adjustment between pigtail relative to plano-convex lens, and is fixed after the axial transition through connecting pipe or ridge hole plate, can guarantee the mechanical positioning accuracy index of every collimator and the optical performance index in the whole surface array optical fiber collimator, and the quality can be guaranteed, in addition, the utility model has compact structure and low material cost, and easy to assemble, the yield is high, is suitable for building large array.

The application relates to an optical device without an isolator, comprising a transmitting end, a polarizer, a first filter, a receiving end and a pigtail, the transmitting end is arranged obliquely relative to the polarizer, the first filter is arranged obliquely between the polarizer and the pigtail, and the receiving end is arranged on the reflection light path of the first filter; linearly polarized light emitted by the transmitting end is coupled to the pigtail after being transmitted by the polarizer and the first filter in sequence; and a received optical signal recycled from the pigtail enters the receiving end after being reflected by the first filter. The application effectively suppresses the interference of reflected light. The traditional scheme needs an optical isolator, and the application omits the optical isolator through specific optical path structure design, reduces the device manufacturing cost, and meets the application requirements of consumer-grade optical communication products.

The present application relates to a kind of alignment methods of the oblique angle of the oblique end face of pigtail, belong to optical fiber detection technical field, comprising the following steps: step 1) using ANSYS software adopts stereoscopic scanning method scanning and gathers the model data of pigtail and rectangular capillary;Step 2) the oblique angle that the end of pigtail needs to be ground is set in advance, the end of pigtail is simulated to be ground, and the deformation of pigtail grinding is analyzed;Step 3) using vector angle method analyzes the oblique angle of the end of pigtail after grinding, detects the oblique angle that the end of pigtail needs to be ground and the oblique angle of the end of pigtail after grinding;Step 4) the oblique angle of the end of pigtail after grinding is processed;The beneficial effects of the present application: by comparing the oblique angle that the end of pigtail needs to be ground and the oblique angle of the end of pigtail after grinding, the deviation between the oblique angle of the oblique end face of the pigtail after correction or detection grinding and the oblique angle of the oblique end face of the pigtail actually needed is reduced.