199 results about "Fusion splicing" patented technology

Disclosed in the present invention is a method for automatically measuring and adjusting the refractive index of the cross-section of an optical fiber. The method comprises the following steps: S1, optical fiber alignment; S2, detection of optical signals; S3, automatic compensation for optical fiber fusion splicing; S4, analysis of the optical signals; and S5, automatic adjustment and compensation. Compared with the conventional related art, the automatic compensation technique for optical fiber fusion splicing in the present invention has advantages such as higher quality stability, reduced manual intervention, precise parameter adjustment, rapid response capability and improved production efficiency, and is applicable to production and application in the field of optical fiber communications.

The invention relates to the technical field of image processing, and provides an OCT (Optical Coherence Tomography) image splicing method, which comprises the following steps: acquiring image pairs and matching point pairs corresponding to the image pairs, the image pairs being adjacent OCT images; calculating a homography matrix based on the matching point pairs so as to align the image pairs, and outputting preliminary aligned image pairs; constructing a fusion weight map, wherein the fusion weight map comprises a weight value of a pixel position and a region type; and according to the weight value and the region type, carrying out fusion splicing on the pixel positions so as to output a panoramic OCT image. According to the method, partition fusion is achieved by fusing the weight map, the problems of tissue dislocation and artifacts in OCT splicing are solved, and then the problem that the splicing effect of OCT image splicing is poor is solved.

The invention belongs to the technical field of optical fiber sensing, and discloses a high-temperature-resistant and high-pressure-resistant multi-parameter integrated sensor and system based on optical fiber dislocation welding, and the sensor comprises a packaging main body, and the center of the packaging main body is provided with a center hole and a cavity which are used for accommodating a transmission optical fiber. The tail end of the transmission optical fiber is sequentially connected with a temperature detection device and a pressure / sound detection device which are positioned in the cavity; the temperature detection device comprises a fiber bragg grating; the pressure / sound detection device comprises a single-mode fiber, a multimode fiber, a first hollow capillary fiber and a second hollow capillary fiber which are connected in sequence; the axes of the first hollow capillary optical fiber and the second hollow capillary optical fiber are connected in a staggered manner to form an open structure. The pressure / sound-temperature multi-parameter composite in-situ synchronous measurement device realizes composite in-situ synchronous measurement of multiple parameters of pressure / sound-temperature, has the advantages of high temperature resistance, small size and high test precision, and has wide application prospects in the fields of aerospace, petroleum metallurgy, environmental monitoring and the like.

The invention discloses a target tracking method, device and equipment in a multi-target multi-source information fusion scene, and relates to the field of target tracking. The method comprises the following steps: acquiring information data of a to-be-tracked target group; performing parallel processing on the information data by adopting a DBSCAN algorithm and a neural network to obtain a track association result; the track association result comprises a track measurement fragment and a target to which the track measurement fragment belongs; segmenting the track measurement segment based on a preset sliding window and step length, and determining a track residual error according to sub-track information obtained through segmentation by adopting an error feature estimation algorithm; based on the trained MsRFCFN, determining a fusion residual error according to the track residual error; and performing track reconstruction and fusion splicing processing according to the fusion residual error to obtain a fusion track for realizing target tracking. The invention aims to improve the fusion precision so as to improve the target tracking precision.

In order to solve the problem that quick response and distortionless recording of ultrahigh-frequency partial discharge signals are difficult to realize when accidental pulses are generated in the prior art, the invention relates to a dual-channel parallel processing architecture for ultrahigh-frequency partial discharge signals, which comprises a signal cloning circuit and a signal processing circuit, the ultrahigh-frequency partial discharge module is used for receiving ultrahigh-frequency partial discharge signals and synchronously outputting the ultrahigh-frequency partial discharge signals as first target signals and second target signals after lossless copying; the low-gain channel circuit is used for performing buffer transmission for maintaining an original bandwidth and a dynamic range on the first target signal to generate a first gain signal; the high-gain channel circuit is used for performing gain amplification on the second target signal to generate a second gain signal; the digital signal processing unit is used for performing synchronous clock control on the low-gain channel circuit and the high-gain channel circuit; and the FPGA chip is integrated in the digital signal processing unit and is used for performing fusion splicing processing on the first gain signal and the second gain signal based on a waveform fusion splicing algorithm and generating a fusion signal.

The utility model relates to the technical field of communication equipment, in particular to an optical fiber fusion splicing module box which comprises a box body with an opening in the upper portion, a box cover detachably connected to the upper end of the box body to cover the opening, an adapter installed at the front end of the box body, an anti-disengaging end shell clamped at the front end of the box body and arranged on the adapter in a sleeving mode and a fusion splicing clamping base. The welding clamping seat can be connected to the inner wall of the box body in a turnover mode and is provided with a plurality of wire grooves for clamping and embedding cables. The welding clamping seat of the optical fiber welding module box can be connected to the inner wall of the box body in a turnover mode, the welding clamping seat can be turned over to be in a vertical state in the wiring process, occupied space is reduced, a worker can conveniently insert a wiring terminal of an optical fiber cable into a wiring port of an adapter, the flexibility and efficiency of optical fiber harness construction are improved, and the construction cost is reduced. After wiring is completed, the welding clamping seat is folded to be in a horizontal state, and the protective sleeve fixedly sleeved at the welding position of the cable is clamped in the wire groove.

The invention belongs to the technical field of data processing, and particularly relates to a multi-view cloud high-precision fusion splicing method based on semantic geometry collaborative optimization, which comprises the following steps: extracting and quantifying features of multi-view cloud, endowing each point cloud with a semantic label, calculating the confidence coefficient of classification of each point cloud, and simultaneously calculating the normal vector and curvature geometric features of each point cloud. And performing robust initial registration based on semantic constraint, and outputting a robust initial transformation matrix. And constructing a collaborative energy function, carrying out dynamic quantitative coupling on semantic confidence and geometric stability, and carrying out iterative registration. And realizing anisotropic point cloud fusion based on semantic guidance, and outputting a fused and spliced three-dimensional point cloud model. And finally, verifying the performance of the method, and measuring fusion splicing errors. According to the method, the semantic features of the point cloud data are effectively extracted and utilized, the precision and robustness of point cloud fusion splicing are improved, and geometric details of a final model are reserved to the maximum extent.

The invention relates to a hollow-core microstructure optical fiber welding method, which comprises the following steps of: 1, firstly, stripping coating layers at to-be-welded ends of two sections of optical fibers to form bare optical fiber ends, and cleaning the bare optical fiber ends; cutting the end face of the bare fiber; 2, clamping the bare optical fiber ends of the two sections of optical fibers processed in the step 1 on an optical fiber clamp of a fusion splicer, and coaxially aligning the bare optical fiber ends; the welding machine is arranged in the sealing cover; 3, aiming at the condition that the two sections of optical fibers are hollow-core micro-structure optical fibers, installing inflation valves at the external non-processing ends of the two sections of optical fibers; only one section of optical fiber is a hollow-core microstructure optical fiber, and only an inflation valve needs to be installed at the non-processing end of the hollow-core microstructure optical fiber. 4, pre-inflation is carried out, wherein the sealing cover is inflated, and the hollow-core microstructure optical fiber is inflated; and 5, after pre-inflation is completed, a welding machine is started, the two sections of optical fibers are welded, and micro-pores are filled with trace inert gas in the melting heating process so as to keep the micro-pores not collapsed. The welding power of the optical fiber can be improved, and the air holes can be prevented from collapsing.

The utility model relates to the technical field of optical fiber fusion splicing, and provides a portable optical fiber fusion splicing device which comprises a lower box body and an upper box body which are hinged, the upper box body is used for rotating to open or close a carrying box, and an optical fiber fusion splicer placing groove used for containing the lower part of an optical fiber fusion splicer is formed in one side, far away from the hinged position, of the lower box body. An optical fiber fusion splicer containing groove used for containing the upper portion of an optical fiber fusion splicer is formed in the upper box body, a containing area used for containing an optical fiber box is formed in the side, close to the hinged position, of the lower box body, fixing components used for fixing optical cables are arranged on the two sides, facing an optical fiber box inlet and outlet, of the containing area respectively, and one end of each fixing component is connected with the lower box body. A clamping groove used for clamping an optical cable is formed in the section, extending out of the lower box body, of the fixing component, and a fixing component containing groove used for containing the section, extending out of the lower box body, of the fixing component is formed in the upper box body. The utility model aims to provide a portable optical fiber welding device which is convenient for placing an optical fiber welding machine and an optical fiber box.

The utility model discloses a cable fusion joint, which comprises a pair of cables and a fusion welding section between the pair of cables, a pair of cable bodies are fixedly sleeved with conical fixing sleeves, the outer wall of each conical fixing sleeve is provided with an annular groove along the circumferential direction, and a sealing gasket with the same taper as the conical fixing sleeve is embedded in each annular groove. The utility model relates to the technical field of cable welding, the conical fixing sleeves are matched with the sealing gaskets, and the first connectors, the second connectors and the conical fixing sleeves are tightly connected, so that a plurality of groups of sealing structures are formed, and the sealing performance of the cable is improved. The sealing gasket and the conical fixing sleeve are the same in taper and can be tightly attached, and water is effectively prevented from entering. And the first connecting ring and the second connecting ring are screwed through threads, so that the sealing effect is enhanced, and the waterproof performance of the cable welding section is ensured.

The utility model relates to a double-layer subdivision type optical cable fiber distribution box, and the box comprises a lower cabin body which comprises a lower housing with an opening at the top, a fiber coiling assembly fixedly disposed in the lower housing, and a welding overturning assembly which is disposed in the lower housing and is disposed above the fiber coiling assembly; the upper cabin body comprises an upper shell which is rotationally connected with the lower shell, the top of the upper shell is open, an adapter assembly is arranged in the upper shell, and when the lower shell is closed by the upper shell, a lower cabin is formed; the upper cover is of a hollow shell structure with the bottom open and the periphery closed, the upper cover is rotationally connected with the upper shell, and when the upper cover seals the upper shell, an upper cabin is formed. The fiber coiling assembly and the welding turnover assembly in the lower cabin are used for fiber coiling, fiber welding and light splitting operation of a main optical cable, the adapter assembly of the upper cabin is used for plugging operation of a user optical cable, construction and management of the upper cabin and the lower cabin are facilitated, the operation space is large, mutual interference of the upper cabin and the lower cabin is avoided, and the construction efficiency is improved.

The invention discloses an optical fiber full-automatic welding method and system. The welding method comprises the following steps that S1, two optical fibers are clamped, so that the two optical fibers are arranged reversely, and at the moment, the two optical fibers are located at initial positions; s2, respectively stripping the coating layers of the two optical fibers, and cleaning the stripping areas of the two optical fibers; s3, the stripping areas of the two optical fibers are rubbed in a sliding mode, so that the optical fibers are broken, and then a flat welding end face is formed; and S4, controlling the two optical fibers with the flat welding end surfaces to reach a target position, enabling the welding end surfaces of the two optical fibers to be aligned, and sequentially performing welding and coating operation on the two optical fibers so as to splice the two optical fibers into one optical fiber. Through the mode, the fusion splicing method provided by the invention can realize full-automatic stripping, cleaning, cutting, fusion splicing and coating operation of the optical fiber, and is matched with a fusion splicing system, so that the optical fiber processing efficiency is greatly improved, the quality consistency and reliability of the processed optical fiber are relatively high, and the production cost is greatly reduced.

The invention discloses optical fiber welding and cutting integrated equipment based on intelligent closed-loop feedback. Through an intelligent closed-loop feedback system, a sensor collects key data in real time and transmits the key data to a controller, the controller automatically adjusts parameters after intelligent algorithm analysis, precise control over the process is achieved, and welding and cutting quality and efficiency are guaranteed. And compared with traditional equipment, the automation degree is high, personal errors can be reduced, the labor intensity is lowered, and the working efficiency is improved. The system has an intelligent diagnosis function, can monitor the state of equipment in real time, early warns potential faults, and enhances the stability and reliability. The equipment is suitable for the fields of communication engineering, optical fiber manufacturing and the like, can meet the requirements of multiple scenes, and assists the intelligent development of related industries.

The invention provides a two-parameter optical fiber sensor based on an FP-WGM composite microcavity and a preparation method of the two-parameter optical fiber sensor, and relates to the technical field of optical fiber sensing. The two-parameter optical fiber sensor comprises a circulator, a composite microcavity column, a left conical optical fiber and a right conical optical fiber, wherein the composite microcavity column comprises a front-end single-mode optical fiber C, a hollow-core optical fiber B and a rear-end single-mode optical fiber A which are connected in series and welded; the circulator transmits an optical signal to the composite microcavity column, the optical signal excites FPI interference in the composite microcavity column, generated FPI reflected light is directionally transmitted to the left conical optical fiber through the circulator, WGM resonance is excited through coupling of the left conical optical fiber and the composite microcavity column, and then an FPI-WGM composite optical signal is received through the right conical optical fiber. The device can be used for measuring the environment temperature and the liquid concentration at the same time and eliminating cross interference of the temperature on concentration measurement.

The invention discloses an optical fiber vacuum coating process, and relates to the technical field of optical fiber coating, and the optical fiber vacuum coating process comprises the following steps: S1, optical fiber surface pretreatment, S2, coating, S3, post-treatment, and S4, welding treatment. Comprising an optical fiber preprocessing cylinder, a preprocessing unit, an optical fiber coarsening assembly and an activating processing unit are integrated in the optical fiber preprocessing cylinder, and 360-degree uniform processing of the surface of an optical fiber is achieved by driving the cylinder to rotate through a driving motor; the modularized coarsening assembly adopts a replaceable coarsening piece, and is matched with a T-shaped driving screw rod to adjust the contact pressure so as to adapt to synchronous processing of a plurality of optical fibers with different sizes; the adjustable driving rollers adjust the distance through worm gear-worm transmission, so that stable conveying of the optical fibers is ensured; and the final treatment unit realizes surface residue-free drying through a nano cleaning block and a hot air box. According to the invention, mechanical coarsening and chemical activation synergistically enhance the coating adhesive force, and multi-stage cleaning and modular design are combined, so that the process efficiency, the surface quality and the equipment adaptability are remarkably improved, and the method is suitable for high-precision optical fiber coating production.

To provide an optical fiber fusion splicer which allows for fusion splicing optical fibers under fusion conditions in accordance with a fiber pitch.SOLUTION: An optical fiber fusion splicer 10 of the present invention comprises a replaceable groove forming unit 13, an illumination unit 16, a lens 17, a camera 18, a pair of discharge electrodes 15, a high voltage generation circuit 24, a movable stage 11, an image processing unit 21, and a fusion condition processing unit 22.SELECTED DRAWING: Figure 5

To provide a fusion splicer for optical fiber capable of improving the quality of fusion splicing and a method for fusion-splicing an optical fiber.SOLUTION: A fusion splicer for optical fiber includes an image acquisition part, a condition setting part, and a fusion splicing part. The image acquisition part acquires an image including end surfaces of first and second optical fibers in a state that the end surfaces of the first and second optical fibers to be connected are disposed opposite. The condition setting part grasps states of the respective end surfaces based on the image and sets a connection condition in accordance with the states of the respective end surfaces. The fusion splicing part fusion-splices the first and second optical fibers each other by discharge between a pair of electrode bars according to the connection condition set by the condition setting part. The connection condition includes at least one of a position of each end surface before discharge starts, a gap between the respective end surfaces before discharge starts, a preparatory discharge time, a real discharge time, a push-in amount after the respective end surfaces come into contact with each other, and an amount of return after the respective end surfaces are pushed in.SELECTED DRAWING: Figure 1

The utility model discloses a fusion splicing type optical fiber quick connector, and belongs to the field of optical fiber connectors, the fusion splicing type optical fiber quick connector comprises a fixed shell, the bottom of the fixed shell is slidably connected with a lower shell, a connecting mechanism is arranged between the lower shell and the fixed shell, an insertion core body is arranged in the fixed shell, one side of the insertion core body is provided with an embedded optical fiber, and the embedded optical fiber is connected with the lower shell. A field optical cable is arranged on the side, away from the insertion core body, of the pre-embedded optical fiber, a movable plate, a second spring and a semicircular sponge mat are arranged, the movable plate is supported through the second spring, then the field optical cable is supported through the semicircular sponge mat on the surface of the movable plate, and when the field optical cable is bent by a large angle, the field optical cable can be fixed. When the optical fiber is bent by a large angle, the semicircular sponge pad is extruded to be deformed, the bending angle of the on-site optical cable is reduced, the problem that the optical fiber is easy to damage due to the fact that the optical fiber cannot be protected when the optical fiber is bent by a large angle by a traditional optical fiber connector is solved, and the practicability is improved.

The utility model relates to the field of operation and maintenance of optical cable lines, and discloses a welding box used for searching pipeline optical cables, which comprises an outer shell, an inner shell and an inner shell, and is characterized in that the outer shell comprises an upper shell and a lower shell, and the upper shell is arranged above the lower shell; the inner shell is arranged in the outer shell, and a fiber melting disc is arranged in the inner shell; and the plurality of first conduction plates are mounted on the outer wall of the outer shell, and the plurality of first conduction plates are distributed in a linear array. According to the utility model, through arranging the first conduction plate and the vibration plate on the fusion splicing box, vibration signals are ensured not to be attenuated or interfered too much in the transmission process, the conduction path of the vibration signals is optimized, the accuracy and reliability of the signals are improved, and the fusion splicing box can more accurately position the position of the optical cable fusion splicing box. And the working efficiency can be improved in the maintenance and management of the pipeline optical cable.

The invention discloses a system for generating 532nm green light through frequency doubling of 1-micron narrow-linewidth nanosecond laser, which effectively inhibits the nonlinear threshold of an optical fiber amplifier, realizes high-power output of 1-micron narrow-linewidth nanosecond laser while ensuring high light beam quality, and realizes high-efficiency frequency conversion of a pumping nonlinear crystal. The all-fiber polarization-maintaining cascade amplifier comprises a fiber laser seed source system, a fiber pre-amplification device and a fiber main amplifier. The fiber laser seed source system adopts a direct modulation semiconductor laser, the main amplifier adopts a polarization-maintaining conical fiber as a gain medium, the all-fiber polarization-maintaining cascade amplifier outputs narrow linewidth nanosecond laser, and each part adopts an all-fiber welding mode; according to the solid cavity external frequency doubling device, narrow linewidth nanosecond laser is collimated and focused through a lens system, the polarization extinction ratio is improved through combination of a half slide and a polarization slice, meanwhile, the power of injection pump light is adjusted, finally, the laser is coupled into an LBO crystal, and the size of a light spot and the temperature of the crystal are controlled to achieve high-efficiency frequency doubling green light output.

The invention provides a lane line marking data fusion and splicing method, a medium, equipment and a program product, and belongs to the technical field of intelligent traffic, the method comprises the following steps: obtaining road image data information shot by a multi-view vehicle-mounted camera in real time, and marking a road lane line; converting the point coordinate of each lane line to a laser radar coordinate system; sequentially calculating the intersection point of the line or the extension line of the line on the X axis and the forward intersection angle of the line or the extension line of the line and the X axis for each lane line; a sliding window algorithm is adopted to carry out lane matching on double yellow lines, and then lane matching is carried out on other single lane lines; combining the close line segments of the two lines in the matching combination through a close point fusion algorithm; and combining the two line segments in each matching combination into one line segment. According to the method, the matching precision and efficiency of the lane lines among the multiple projections of the radar system can be effectively improved, the precision and robustness of the multi-view lane line fusion technology are improved, and the burden of technicians is greatly reduced.

The invention relates to a welding discharge system, and relates to the technical field of optical fiber welding, the welding discharge system comprises a main control module, a driving voltage adjusting module and three flyback boost modules, the driving voltage adjusting module is controlled by the main control module to output an adjustable primary power supply voltage, and the flyback boost modules are connected with the main control module. The primary sides of the three flyback boost modules are connected in parallel to primary power supply voltage, the secondary sides of the three flyback boost modules are connected to the corresponding discharge electrodes, and the main control module is configured to output three paths of PWM driving signals with the same frequency to the three flyback boost modules, the discharge electrode in high-voltage release discharges to the other two discharge electrodes in relatively low potential, so that the three discharge electrodes are driven to generate phase rotation in space, and a rotary discharge arc around the optical fiber is formed; therefore, the problem of non-uniform heating caused by heat concentration in a fixed discharge direction and insufficient heat radiation in other directions is solved.

An optical connector for terminating a cable containing one or more multicore fibers. The connector has a plug housing, a ferrule disposed inside the housing, a rotatable frame, and a multicore fiber (MCF) stub having a length of a first MCF a portion of which is fixed inside the ferrule so that a first endface of the fiber is exposed at the front end of the ferrule. An opposite endface of the first MCF is cleaved for fusion splicing to a second MCF in the cable to be terminated. The ferrule also has a flange, and the frame is formed to engage the flange for rotation so that cores in the first MCF can be aligned and positioned in a prescribed orientation relative to the plug housing, and cores in the second MCF can be aligned with corresponding cores in the first MCF when the first and the second MCFs are fusion spliced to one another.

The utility model relates to an optical fiber welding disc mounting structure, which comprises an optical fiber welding disc provided with a connecting shaft; the installation support is provided with a connecting shaft through groove allowing the connecting shaft to penetrate through, the connecting shaft through groove is divided into a groove depth rotating part and a notch limiting part, the groove depth rotating part allows the connecting shaft to be rotationally arranged, and the installation support enables the connecting shaft to pass through at the notch limiting part through deformation to enter the groove depth rotating part. According to the invention, the welding disc can adapt to more types of installation environments, and the welding disc can be conveniently buckled and opened.

The invention provides a cladding mode efficient filtering method for microstructure optical fibers, and relates to the technical field of optical fibers, and the method comprises the steps: taking two microstructure optical fibers which are different in structure and have a diameter difference value of a fiber core fundamental mode field within a diameter difference value range, and carrying out the non-oblique-angle cutting of the end faces of the two microstructure optical fibers through a cutting knife; and aligning the axial directions of the two sections of cut micro-structure optical fibers, and splicing at the cutting end surface to obtain a spliced micro-structure optical fiber. The method has the beneficial effects that two sections of microstructure optical fibers with different structures but similar fiber core fundamental mode field diameters are selected, oblique-angle-free cutting is carried out, splicing (welding, butt joint or coupler coupling) is carried out at the cutting end face, and it is ensured that splicing points are axially coaxial but cladding waveguide structures have differences. At a continuous connection point, because the cladding microstructures (such as air hole arrangement, number, shape and the like) of the two sections of optical fibers are discontinuous, the continuity of the cladding waveguide is damaged. Therefore, cladding mode energy is efficiently filtered or scattered, and the strength of the cladding mode energy is greatly weakened.

A fusion splicing machine according to one embodiment includes: an optical fiber holder holding an optical fiber in the state where a tip end of the optical fiber protrudes; a rotation mechanism arranged on the opposite side of the optical fiber holder to the tip end of the optical fiber and rotating the optical fiber holder around the axis extending along the optical fiber; and a clamp unit pressing the tip end portion of the optical fiber held by the optical fiber holder. The rotation mechanism rotates the clamp unit together with the optical fiber holder.

The present invention discloses a low-loss optical transmission core fiber, comprising an outer sleeve, the outer sleeve being provided with multiple sections, a fiber segment being provided between each two adjacent sections of the outer sleeve, the middle portion of the fiber segment being provided in a photonic crystal fiber transmission mode, and the central portion thereof being connected through a quartz rod, the inner edge portion of the fiber segment being connected through an inner sleeve, the outer sleeve, the fiber segment, the inner sleeve and the quartz rod being preheated and melted into one piece in a vacuum environment of a drawing tower, and then being drawn. The core fiber as a whole has the structural characteristics of a bamboo node, which facilitates the fixing of the central nanofilament and is also more convenient for subsequent fusion splicing and drawing. The fiber segment is designed to be transmitted in a photonic crystal fiber mode, and light propagates from the nanofilament into the fiber segment, where it is transmitted in the form of a photonic crystal fiber transmission, and then enters the core fiber from the photonic crystal fiber, thus making signal transmission more stable and ensuring low loss.

The invention discloses an optical interface structure of an integrated photonic chip for a fiber-optic gyroscope and an optical coupling method, and belongs to the technical field of integrated optics and optical fiber sensing. All input and output ports of the integrated photon chip are arranged on a coupling end face on the same side of the chip, the ports comprise at least two signal ports and two auxiliary ports, the signal ports are used for connecting tail fibers of polarization maintaining fiber rings of all measuring axes of the fiber-optic gyroscope, and the auxiliary ports are connected with a through type auxiliary coupling optical channel in the chip; each port is integrated with a spot size adaptation unit, and the spot size adaptation unit is used for matching the spot size of the polarization maintaining optical fiber and the chip waveguide; the integrated photon chip realizes single-side end face alignment coupling with the multi-channel polarization-maintaining optical fiber array through the coupling end face, tail fibers of polarization-maintaining optical fiber rings of all measuring axes of the optical fiber gyroscope are directly solidified in the multi-channel polarization-maintaining optical fiber array, a head channel and a tail channel of the multi-channel polarization-maintaining optical fiber array are aligned with two auxiliary ports of the chip respectively, and no extra welding link is needed. According to the invention, the problems of dispersed channel-by-channel coupling of optical interfaces, complex alignment of two-side FAs, large dual-link coupling loss, serious polarization cross coupling and uncontrollable coupling quality are solved, the overall precision and environmental stability of the fiber-optic gyroscope are remarkably improved, the method is suitable for various fiber-optic gyroscopes with single axes, multiple axes and the like, and the system integration level and the assembly consistency are remarkably improved.