Multi-core optical fiber interface assembly and processing method thereof

Abstract

The invention relates to the technical field of optical fiber communication, and provides a multi-core optical fiber interface assembly and a processing method thereof, and the multi-core optical fiber interface assembly comprises a multi-core optical fiber interface, a positioning flange and a reference base. The multi-core optical fiber interface comprises a multi-core optical fiber insertion core; the positioning flange sleeves the multi-core optical fiber interface and is fixedly connected with the multi-core optical fiber interface; the positioning flange is positioned on the reference base and is fixedly connected with the reference base, the reference base is provided with at least two coupling alignment reference holes, and the coupling alignment reference holes are used for being matched with positioning insertion of at least two PINs on the multi-core optical fiber connector, so that a multi-core optical fiber insertion core of the multi-core optical fiber interface and a connector insertion core of the multi-core optical fiber connector are coupled and positioned. According to the multi-core optical fiber interface assembly, the coupling alignment reference hole is formed in the reference base, and the PIN needle on the multi-core optical fiber connector is inserted into the coupling alignment reference hole for positioning, so that accurate coupling alignment of the multi-core optical fiber insertion core of the multi-core optical fiber interface assembly and the connector insertion core on the multi-core optical fiber connector is realized, and high-precision connection is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical fiber communication, and more particularly to a multi-core optical fiber interface assembly and a processing method thereof. BACKGROUND

[0002] In recent years, the rapid popularization of optical fiber broadband and the rapid development of emerging industries such as AI, cloud computing, and the Internet of Things have prompted people's increasing demand for large-capacity high-speed information transmission. Under this background, as the transmission capacity of a single optical fiber approaches the Shannon limit, the rapidly developing space division multiplexing technology is considered to be a key research direction to break through the transmission capacity limit of single-mode optical fiber and meet the demand of future large-capacity high-speed optical fiber systems. As one of the core products adapting to space division multiplexing technology, multi-core optical fiber has the significant advantage of realizing optical fiber expansion without increasing the space and cost of optical cable laying. Multi-core optical fiber is expected to be widely used in various scenarios such as large data centers, ocean communication, aerospace, medical health, and bridge monitoring. While greatly expanding the capacity, multi-core optical fiber can also meet the requirements of green and low-cost operation. With the emerging upgrade requirements of optical networks for higher speed, larger bandwidth, and lower latency, multi-core optical fiber, as one of the new optical fibers that have attracted much attention, has considerable development prospects. In the future, multi-core optical fiber will play an increasingly important role in human production and life.

[0003] Multi-core optical fiber integrates multiple independent optical fiber cores in one optical fiber. A typical multi-core optical fiber may contain four to eight single-mode optical fiber cores, which are uniformly distributed in a protective sleeve with a diameter of about 125 um. Without increasing the outer diameter, the overall bandwidth capacity is significantly improved. In China, this type of multi-core optical fiber has been deployed in multiple live network pilots. From the deployment results, multi-core optical fiber has the ability to increase the transmission capacity by multiple times, and the real-time transmission verification of long-distance crosstalk has almost no effect. However, the loss challenge caused by engineering splicing still needs to be addressed, and the prospects for short-distance interconnection are greater.

[0004] Traditional single-core optical fiber coupling only needs to align and connect one core, while multi-core optical fiber needs to accurately align multiple channels (e.g., 4 cores, 7 cores, 19 cores) with the optical fiber interface assembly inside the optical module at the micron or sub-micron level. Any slight deviation of a channel will cause a sharp increase in insertion loss and crosstalk of that channel.

[0005] The application of multi-core optical fiber needs to solve the demand for high-precision alignment and connection of multi-core optical fiber. Currently, multi-core optical fiber is mostly connected by fusion splicing, but this method also has certain limitations, such as high construction difficulty and difficulty in later maintenance. Moreover, there is no unified standard for the production of multi-core optical fiber, and each manufacturer produces multi-core optical fiber with different core arrangements, core sizes, and core spacings, which increases the difficulty of fusion splicing between multi-core optical fibers. SUMMARY

[0006] The present application aims to provide a multi-core fiber interface assembly and a processing method thereof to solve the technical problem of the limitation of the existing multi-core fiber connection by fusion.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present application is: On the one hand, the present application provides a multi-core fiber interface assembly, comprising: A multi-core fiber interface, the multi-core fiber interface comprising a multi-core fiber ferrule; A positioning flange, the positioning flange being sleeved on the multi-core fiber interface and being fixedly connected with the multi-core fiber interface; A reference base, the positioning flange being positioned on the reference base and being fixedly connected with the reference base, the reference base being provided with at least two coupling alignment reference holes, the coupling alignment reference holes being used for matching at least two PIN needle positioning insertions on a multi-core fiber connector, so that the multi-core fiber ferrule of the multi-core fiber interface is coupled and aligned with a connector ferrule of the multi-core fiber connector.

[0008] According to the multi-core fiber interface assembly described above, the reference base is provided with a notch, the notch is provided with a limiting groove, both sides of the positioning flange are provided with limiting parts, and the reference base is limitedly connected on the positioning flange through the cooperation of the limiting groove and the limiting parts.

[0009] According to the multi-core fiber interface assembly described above, the other two sides of the positioning flange perpendicular to the connecting line of the two limiting parts are provided with flat positions, and the flat positions are positioning references of the positioning flange.

[0010] According to the multi-core fiber interface assembly described above, the reference base is provided with two coupling alignment reference holes, and the two coupling alignment reference holes are respectively located on both sides of the multi-core fiber interface.

[0011] According to the multi-core fiber interface assembly described above, the multi-core fiber interface further comprises: A pressing block, the pressing block being sleeved on one end of the multi-core fiber ferrule and being fixedly connected; A sleeve, the sleeve being sleeved on the other end of the multi-core fiber ferrule and being fixedly connected; An outer shell, the outer shell being sleeved on the outside of the pressing block and the sleeve and being fixedly connected.

[0012] According to the multi-core fiber interface assembly described above, the multi-core fiber ferrule comprises a ferrule body and a multi-core fiber, the multi-core fiber being arranged inside the ferrule body and being fixedly connected with the ferrule body.

[0013] According to the multi-core fiber interface assembly, the positioning flange is arranged outside the pressing block and abuts against the outer shell, and the positioning flange is fixedly connected with the pressing block.

[0014] In another aspect, the application further provides a processing method of a multi-core fiber interface assembly, which is used for processing the multi-core fiber interface assembly. Assembling and fixing the multi-core fiber with the ferrule body; Assembling the pressing block outside one end of the ferrule body and fixing the pressing block with the ferrule body; Assembling the sleeve outside the other end of the ferrule body and fixing the sleeve with the ferrule body; Assembling the outer shell outside the pressing block and the sleeve and fixing the outer shell with the pressing block and the sleeve; Assembling the positioning flange to the pressing block and abutting against the end of the outer shell and fixing the positioning flange with the pressing block; Positioning and assembling the reference base to the positioning flange and fixing the reference base with the positioning flange.

[0015] According to the processing method of the multi-core fiber interface assembly, in the step of positioning and assembling the reference base to the positioning flange and fixing the reference base with the positioning flange, a limiting part is made on the positioning flange, a limiting groove is made on the reference base, and the limiting groove on the reference base is limitedly matched with the limiting part on the positioning flange to assemble the reference base to the positioning flange.

[0016] According to the processing method of the multi-core fiber interface assembly, in the step of positioning and assembling the reference base to the positioning flange and fixing the reference base with the positioning flange, at least two coupling alignment reference holes are made on the reference base.

[0017] The multi-core fiber interface assembly and the processing method thereof provided by the application have at least the following beneficial effects: The multi-core optical fiber interface assembly and the processing method thereof are characterized in that a positioning flange is mounted outside the multi-core optical fiber interface, the positioning flange is adjusted to a preset position, the positioning flange is fixed with a pressing block, a reference base is positioned and assembled on the positioning flange, and a coupling alignment reference hole is further arranged on the reference base, when an external multi-core optical fiber connector is assembled with the multi-core optical fiber interface assembly, a PIN needle on the multi-core optical fiber connector is inserted into the coupling alignment reference hole, the multi-core optical fiber interface assembly is finely adjusted and positioned, the reference base is fixed with the multi-core optical fiber interface assembly when the power of the product is maximum and the crosstalk is minimum, the multi-core optical fiber ferrule of the multi-core optical fiber interface assembly is precisely coupled and positioned with the connector ferrule on the multi-core optical fiber connector, high-precision connection is realized, and stable transmission is realized, the coupling alignment mode is simple in operation, accurate and fast in alignment, the coupling alignment mode is suitable for any multi-core optical fiber without unified standards in different fiber core arrangements, fiber core sizes and fiber core spacings, and has a wide application range. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0019] Figure 1 A perspective structural schematic view of the multi-core optical fiber interface assembly provided by the present application is provided. Figure 2 A sectional structural schematic view of the multi-core optical fiber interface assembly provided by the present application is provided. Figure 3 An exploded structural schematic view of the multi-core optical fiber interface assembly provided by the present application is provided. Figure 4 A top view structural schematic view of the multi-core optical fiber interface assembly provided by the present application is provided. Figure 5 An enlarged view of the multi-core optical fiber alignment provided by the present application is provided. Figure 6 An exploded structural schematic view of the multi-core optical fiber interface assembly and the multi-core optical fiber connector provided by the present application is provided. Figure 7 A combined state structural schematic view of the multi-core optical fiber interface assembly and the multi-core optical fiber connector provided by the present application is provided. Figure 8 A combined state sectional structural schematic view of the multi-core optical fiber interface assembly and the multi-core optical fiber connector provided by the present application is provided. Figure 9 A processing method flowchart of the multi-core optical fiber interface assembly provided by the present application is provided.

[0020] In the drawings: 100, multi-core fiber interface assembly; 10, multi-core fiber interface; 11, multi-core fiber ferrule; 111, ferrule body; 112, multi-core fiber; 12, pressing block; 13, sleeve; 14, outer housing; 20, positioning flange; 21, limiting part; 22, flat position; 30, reference base; 31, coupling alignment reference hole; 32, limiting groove; 33, notch; 200, multi-core fiber connector; 210, PIN; 220, connector ferrule. DETAILED DESCRIPTION

[0021] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and not to limit the present application.

[0022] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component. The terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or position based on the orientation or position shown in the drawings, and are only for the convenience of description, and cannot be understood as a limitation on the technical solutions. The terms "first", "second" are only for the purpose of convenient description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0023] The application of multi-core optical fiber needs to solve the demand for high alignment accuracy connection of multi-core optical fiber. At present, multi-core optical fiber is mostly connected by fusion. However, this method also has certain limitations, such as high construction difficulty, difficult maintenance in later period, etc. Moreover, there is no unified standard for the production of multi-core optical fiber at present, and the fiber cores of multi-core optical fiber produced by each manufacturer are different in arrangement, size and spacing, which increases the difficulty of fusion between multi-core optical fibers.

[0024] To solve the above technical problems, the embodiment provides a multi-core fiber interface assembly 100. Specifically, please refer to Figure 1 and Figure 2 The multi-core fiber interface assembly 100 includes a multi-core fiber interface 10, a positioning flange 20 and a reference base 30. The multi-core fiber includes but is not limited to 2 cores, 4 cores and 8 cores. The materials of the positioning flange 20 and the reference base 30 are metal or ceramic or plastic, which are not limited here.

[0025] The multi-core fiber interface 10 comprises a multi-core fiber ferrule 11; the positioning flange 20 is sleeved on the multi-core fiber interface 10 and fixedly connected with the multi-core fiber interface 10; the positioning flange 20 is positioned on the reference base 30 and fixedly connected with the reference base 30, and the reference base 30 is provided with at least two coupling alignment reference holes 31, which are used for positioning and inserting at least two PIN needles 210 on the multi-core fiber connector 200, so that the multi-core fiber ferrule 11 of the multi-core fiber interface 10 is coupled and aligned with the connector ferrule 220 of the multi-core fiber connector 200 (see Figures 6 to 8 ).

[0026] The working principle and beneficial effects of the multi-core fiber interface assembly 100 provided by the embodiment are as follows: The multi-core fiber interface assembly 100 provided by the embodiment is externally installed with the positioning flange 20 of the multi-core fiber interface 10 and adjusts the positioning flange 20 to a preset position, then fixes the positioning flange 20 with the pressing block 12, and then positions and assembles the reference base 30 on the positioning flange 20, and the reference base 30 is further provided with the coupling alignment reference hole 31; when the external multi-core fiber connector 200 is assembled with the multi-core fiber interface assembly 100, the PIN needle 210 on the multi-core fiber connector 200 is inserted into the coupling alignment reference hole 31, and the multi-core fiber interface assembly 100 is finely adjusted and positioned; when the product power is maximum and the crosstalk is minimum, the reference base 30 is fixed with the multi-core fiber interface assembly 100, so that the multi-core fiber ferrule 11 of the multi-core fiber interface assembly 100 is precisely coupled and positioned with the connector ferrule 220 on the multi-core fiber connector 200 (see Figure 4 and Figure 5 ), high-precision connection is achieved, stable transmission is achieved, the coupling alignment mode is simple to operate, accurate and fast in alignment, and the coupling alignment mode is also suitable for any multi-core fiber with different core arrangements, core sizes and core spacings, which do not have unified standards, and has a wide range of applications.

[0027] In one embodiment, please refer to Figure 3 , the reference base 30 is provided with a notch 33, the notch 33 is provided with a limiting groove 32, the two sides of the positioning flange 20 are provided with limiting parts 21, the limiting parts 21 are arc-shaped, and the reference base 30 is connected to the positioning flange 20 in a limiting manner through the cooperation of the limiting groove 32 and the limiting parts 21. The notch 33 is arranged outside the positioning flange 20, the limiting parts 21 and the limiting groove 32 are limited and matched, and then the reference base 30 is quickly and accurately assembled on the positioning flange 20, the assembly mode is simple, the connection structure is stable, and displacement or rotation is not randomly generated.

[0028] In one embodiment, please refer to Figure 3 , the positioning flange 20 is provided with two flat positions 22 on the other two sides perpendicular to the line connecting the two limiting parts 21, which are the positioning reference of the positioning flange 20. The flat positions 22 are used to assist the alignment of the multi-core fiber interface 10 and the positioning flange 20 in the standard line light coupling mode.

[0029] Optionally, the reference base 30 and the positioning flange 20 are fixed after being connected by the limiting part 21 and the limiting groove 32 through welding or bonding, so that the reference base 30 and the positioning flange 20 are stably connected. It should be understood that the fixing mode of the reference base 30 and the positioning flange 20 is not limited to the above-mentioned case, but can also be other cases, which are not limited here.

[0030] In one embodiment, please refer to Figure 3 , the reference base 30 is provided with two coupling alignment reference holes 31, which are located on both sides of the multi-core fiber interface 10. The two alignment reference holes are arranged to enable the multi-core fiber interface assembly 100 to be quickly and accurately positioned and connected on the multi-core fiber connector 200, so that the multi-core fiber ferrule 11 on the multi-core fiber interface assembly 100 and the connector ferrule 220 on the multi-core fiber connector 200 are quickly and accurately coupled and aligned.

[0031] In one embodiment, please refer to Figure 2 and 3 , the multi-core fiber interface 10 further comprises a pressing block 12, a sleeve 13, and an outer shell 14. The pressing block 12 is sleeved on one end of the multi-core fiber ferrule 11 and fixedly connected; the sleeve 13 is sleeved on the other end of the multi-core fiber ferrule 11 and fixedly connected; and the outer shell 14 is sleeved on the outside of the pressing block 12 and the sleeve 13 and fixedly connected. The multi-core fiber ferrule 11, the pressing block 12, the sleeve 13, and the outer shell 14 cooperate to form the multi-core fiber interface 10, which is structurally firm.

[0032] In one embodiment, please refer to Figures 2 to 4 , the multi-core fiber ferrule 11 comprises a ferrule body 111 and a multi-core fiber 112, the multi-core fiber 112 is arranged inside the ferrule body 111 and fixedly connected with the ferrule body 111, and the ferrule body 111 and the multi-core fiber 112 constitute the structure of the multi-core fiber ferrule 11. Optionally, the ferrule body 111 and the multi-core fiber 112 are fixed by glue. It should be understood that the connection mode of the ferrule body 111 and the multi-core fiber 112 is not limited to the above-mentioned case, but can also be other connection modes, which are not limited here.

[0033] In one embodiment, please refer to Figure 2 andFigure 3 The positioning flange 20 is sleeved on the outside of the pressing block 12 and abuts against the outer shell 14, and the positioning flange 20 is fixedly connected with the pressing block 12. In this way, the positioning flange 20 is stably connected on the multi-core optical fiber interface 10, and the structure is firm.

[0034] Optionally, the positioning flange 20 is connected with the pressing block 12 through interference fit or bonding or welding. It should be understood that the fixing mode of the positioning flange 20 and the pressing block 12 is not limited to the above-mentioned case, but can also be other cases, which are not limited here.

[0035] Please refer to Figure 9 The embodiment also provides a processing method of the multi-core optical fiber interface assembly 100, which is used for processing the multi-core optical fiber interface assembly 100 described above, and includes the following steps: Step S100: Assemble and fix the multi-core optical fiber 112 with the ferrule body 111. Optionally, after the multi-core optical fiber 112 is assembled with the ferrule body 111, glue is used for bonding and curing.

[0036] Step S200: Assemble the pressing block 12 on the outside of one end of the ferrule body 111, and fix the pressing block 12 with the ferrule body 111. Optionally, after the pressing block 12 is assembled with the ferrule body 111, glue is used for bonding and curing.

[0037] Step S300: Assemble the sleeve 13 on the outside of the other end of the ferrule body 111, and fix the sleeve 13 with the ferrule body 111. Optionally, after the sleeve 13 is assembled with the ferrule body 111, glue is used for bonding and curing.

[0038] Step S400: Assemble the outer shell 14 on the outside of the pressing block 12 and the sleeve 13, and fix the outer shell 14 with the pressing block 12 and the sleeve 13. Optionally, the outer shell 14 is bonded and cured with the pressing block 12 and the sleeve 13 using glue.

[0039] Step S500: Assemble the positioning flange 20 to the pressing block 12 and abut to the end of the outer shell 14, adjust the positioning flange 20 to a preset position, and then fix the positioning flange 20 with the pressing block 12. The positioning flange 20 and the multi-core optical fiber interface 10 are aligned by using the standard line light coupling method to align the four cores with the direction of the positioning flange 20, and the alignment accuracy is generally 3°. Optionally, the positioning flange 20 is connected with the pressing block 12 through interference fit or bonding or welding.

[0040] Step S600: Positioning and assembling the reference base 30 to the positioning flange 20, and fixing the reference base 30 and the positioning flange 20. Optionally, the reference base 30 and the positioning flange 20 are connected by welding or bonding.

[0041] In one embodiment, in the step S600: Positioning and assembling the reference base 30 to the positioning flange 20, and fixing the reference base 30 and the positioning flange 20, a limiting part 21 is made on the positioning flange 20, a limiting groove 32 is made on the reference base 30, and the limiting groove 32 on the reference base 30 is limitedly matched with the limiting part 21 on the positioning flange 20 to assemble the reference base 30 to the positioning flange 20. The limiting part 21 and the limiting groove 32 are made to facilitate the quick and accurate assembly of the reference base 30 to the positioning flange 20, and the assembly method is simple.

[0042] In one embodiment, in the step S600: Positioning and assembling the reference base 30 to the positioning flange 20, and fixing the reference base 30 and the positioning flange 20, at least two coupling alignment reference holes 31 are made on the reference base 30.

[0043] The coupling alignment reference holes 31 are made on the reference base 30, when the multi-core fiber connector 200 is assembled to the multi-core fiber interface assembly 100, the PIN needle 210 on the multi-core fiber connector 200 is inserted into the coupling alignment reference hole 31, and the multi-core fiber interface assembly 100 is finely adjusted for positioning, the reference base 30 is fixed to the multi-core fiber interface assembly 100 at the maximum power and the minimum crosstalk, which can be welding, bonding, etc., so that the multi-core fiber ferrule 11 of the multi-core fiber interface assembly 100 is precisely coupled and aligned with the connector ferrule 220 on the multi-core fiber connector 200.

[0044] Optionally, two coupling alignment reference holes 31 are made on the reference base 30, so that the multi-core fiber interface assembly 100 can be quickly and accurately positioned and connected to the multi-core fiber connector 200, and the multi-core fiber ferrule 11 on the multi-core fiber interface assembly 100 is quickly and accurately coupled and aligned with the connector ferrule 220 on the multi-core fiber connector 200.

[0045] In summary, the embodiment provides a multi-core optical fiber interface assembly 100, which comprises a multi-core optical fiber interface 10, a positioning flange 20 and a reference base 30. The multi-core optical fiber interface 10 comprises a multi-core optical fiber ferrule 11; the positioning flange 20 is sleeved on the multi-core optical fiber interface 10 and fixedly connected with the multi-core optical fiber interface 10; the positioning flange 20 is positioned on the reference base 30 and fixedly connected with the reference base 30, and the reference base 30 is provided with at least two coupling alignment reference holes 31, which are used for positioning and inserting at least two PIN needles 210 on a multi-core optical fiber connector 200, so that the multi-core optical fiber ferrule 11 of the multi-core optical fiber interface 10 is coupled and aligned with a connector ferrule 220 of the multi-core optical fiber connector 200. The embodiment also provides a processing method of the multi-core optical fiber interface assembly 100, which is used for processing the multi-core optical fiber interface assembly 100 described above, and comprises the following steps: S100, assembling and fixing the multi-core optical fiber 112 with the ferrule body 111; S200, assembling the pressing block 12 outside one end of the ferrule body 111 and fixing the pressing block 12 with the ferrule body 111; S300, assembling the sleeve 13 outside the other end of the ferrule body 111 and fixing the sleeve 13 with the ferrule body 111; S400, assembling the outer shell 14 outside the pressing block 12 and the sleeve 13 and fixing the outer shell 14 with the pressing block 12 and the sleeve 13; S500, assembling the positioning flange 20 to the pressing block 12 and abutting to the end of the outer shell 14, adjusting the positioning flange 20 to a preset position, and then fixing the positioning flange 20 with the pressing block 12; and S600, positioning and assembling the reference base 30 to the positioning flange 20 and fixing the reference base 30 with the positioning flange 20.The multi-core optical fiber interface assembly and the processing method thereof provided by the embodiment, the multi-core optical fiber interface assembly 100 provided by the embodiment is externally installed with the positioning flange 20 and adjusts the positioning flange 20 to the preset position, then fixes the positioning flange 20 and the pressing block 12, then positions and assembles the reference base 30 on the positioning flange 20, and the reference base 30 is further provided with the coupling alignment reference hole 31, when the external multi-core optical fiber connector 200 is assembled with the multi-core optical fiber interface assembly 100, the PIN needle 210 on the multi-core optical fiber connector 200 is inserted into the coupling alignment reference hole 31, and the multi-core optical fiber interface assembly 100 is finely adjusted and positioned, the reference base 30 is fixed with the multi-core optical fiber interface assembly 100 when the product power is maximum and the crosstalk is minimum, so that the multi-core optical fiber ferrule 11 of the multi-core optical fiber interface assembly 100 is precisely coupled and positioned with the connector ferrule 220 on the multi-core optical fiber connector 200, high-precision connection is realized, stable transmission is realized, the coupling alignment mode is simple in operation, accurate in alignment and fast, and the coupling alignment mode is also suitable for any multi-core optical fiber which has no unified standard in different core arrangements, core sizes and core spacings, and has a wide application range.

[0046] The above merely provides the preferred embodiments of the present application and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A multi-core optical fiber interface assembly, characterized in that, include: A multi-core fiber optic interface, wherein the multi-core fiber optic interface includes a multi-core fiber optic ferrule; A positioning flange is sleeved on the multi-core fiber optic interface and fixedly connected to the multi-core fiber optic interface. A reference base is provided, and the positioning flange is positioned on the reference base and fixedly connected to the reference base. The reference base is provided with at least two coupling alignment reference holes, which are used to cooperate with at least two PIN pins on the multi-core fiber optic connector for positioning and insertion, so that the multi-core fiber ferrule of the multi-core fiber optic interface is coupled and aligned with the connector ferrule of the multi-core fiber optic connector.

2. The multi-core fiber optic interface assembly according to claim 1, characterized in that, The reference base has a notch, and a limiting groove is provided in the notch. The positioning flange has limiting parts on both sides. The reference base is limited and connected to the positioning flange through the cooperation of the limiting groove and the limiting parts.

3. The multi-core fiber optic interface assembly according to claim 2, characterized in that, The positioning flange has flat sections on its other two sides perpendicular to the line connecting the two limiting parts, and the flat sections serve as the positioning reference for the positioning flange.

4. The multi-core fiber optic interface assembly according to claim 1, characterized in that, The reference base is provided with two coupling alignment reference holes, which are located on both sides of the multi-core fiber optic interface.

5. The multi-core fiber optic interface assembly according to claim 1, characterized in that, The multi-core fiber optic interface also includes: A pressure block, which is sleeved on one end of the multi-core optical fiber ferrule and fixedly connected thereto; A sleeve is fitted onto the other end of the multi-core optical fiber ferrule and fixedly connected thereto. The outer casing is fitted over the pressure block and the sleeve and fixedly connected.

6. The multi-core fiber optic interface assembly according to claim 5, characterized in that, The multi-core fiber ferrule includes a ferrule body and a multi-core fiber, wherein the multi-core fiber is inserted inside the ferrule body and is fixedly connected to the ferrule body.

7. The multi-core fiber optic interface assembly according to claim 5, characterized in that, The positioning flange is sleeved on the outside of the pressure block and abuts against the outer shell, and the positioning flange is fixedly connected to the pressure block.

8. A method for processing a multi-core fiber optic interface assembly, used to process the multi-core fiber optic interface assembly according to any one of claims 1 to 7, characterized in that, include: The multi-core optical fiber is assembled and fixed to the ferrule body; Assemble the pressure block on the outside of one end of the ferrule body and fix the pressure block to the ferrule body; Assemble the sleeve onto the outside of the other end of the ferrule body and fix the sleeve to the ferrule body; Assemble the outer shell onto the outside of the pressure block and sleeve, and then fix the outer shell to the pressure block and sleeve; Assemble the positioning flange onto the pressure block and abut it against the end of the outer casing. Adjust the positioning flange to the preset position and then fix the positioning flange to the pressure block. The reference base is positioned and assembled onto the positioning flange, and the reference base and the positioning flange are then fixed.

9. The processing method of the multi-core optical fiber interface assembly according to claim 8, characterized in that, In the step of positioning and assembling the reference base onto the positioning flange and fixing the reference base and the positioning flange, a limiting part is made on the positioning flange, and a limiting groove is made on the reference base. The limiting groove on the reference base and the limiting part on the positioning flange are matched to limit the positioning so as to assemble the reference base onto the positioning flange.

10. The processing method of the multi-core optical fiber interface assembly according to claim 8, characterized in that, In the step of positioning and assembling the reference base onto the positioning flange and fixing the reference base and the positioning flange, at least two coupling alignment reference holes are made on the reference base.

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