Four-core MCF FIFO optical fiber coupling structure

Abstract

The utility model relates to the technical field of optical fiber coupling structures, in particular to a four-core MCF FIFO (First In First Out) optical fiber coupling structure, which comprises a sub optical fiber head and a mother optical fiber head, the sub optical fiber head comprises a single-fiber capillary tube and an MCF optical fiber penetrating through the single-fiber capillary tube; the female optical fiber head comprises a glass capillary tube and a plurality of arrayed and combined small-diameter optical fibers arranged in the glass capillary tube in a penetrating manner, one end of the single-fiber capillary tube is in butt joint with one end of the glass capillary tube, and one end of the MCF optical fiber is coupled with one end of the corresponding small-diameter optical fiber. The combination of the son optical fiber head and the mother optical fiber head is simple in overall structure, lower in cost and suitable for mass production.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber coupling structures, in particular to a 4-core MCF FIFO optical fiber coupling structure. Background Art

[0002] The document with announcement number CN113433629B announces a multi-channel optical module with dual fan-in and fan-out based on the MPO interface, which belongs to the technical field of optical modules, including an LD module with N lasers arranged in sequence along the output optical axis direction, a multi-core fiber fan-in device with N input ports and N / M output ports, N / M multi-core optical fibers with M cores coupled to the output ports of the multi-core fiber fan-in device, and an N / M-core M-core optical fiber MPO connector connected to the N / M multi-core optical fibers; an N / M-core M-core optical fiber MPO connector arranged in sequence along the input optical axis direction, N / M multi-core optical fibers with M cores connected to the MPO connector, and a multi-core optical fiber fan-out device with N / M input ports and N output ports.

[0003] The module structure in the prior art is complex. Utility Model Content

[0004] The utility model aims to provide a fiber coupling structure with simple combination, and proposes a 4-core MCF FIFO fiber coupling structure to address the above-mentioned shortcomings.

[0005] The utility model adopts the following technical solutions:

[0006] A 4-core MCF FIFO optical fiber coupling structure comprises a sub-optical fiber head and a mother optical fiber head; the sub-optical fiber head comprises a single-fiber capillary and an MCF optical fiber passing through the sub-optical fiber head; the mother optical fiber head comprises a glass capillary and a plurality of arranged and combined thin-diameter optical fibers passing through the mother optical fiber head, one end of the single-fiber capillary is butt-jointed with one end of the glass capillary, and one end of the MCF optical fiber is coupled with one end of the corresponding thin-diameter optical fiber.

[0007] Optionally, a single fiber channel is provided in the single fiber capillary along its length direction, the single fiber channel runs through both ends of the single fiber capillary, and the single fiber channel is located in the middle of the single fiber capillary.

[0008] Optionally, the single fiber channel is in the shape of a circular tube.

[0009] Optionally, a narrow channel is provided in the glass capillary along its length direction, the narrow channel runs through one end of the glass capillary toward the single fiber capillary, and the narrow channel is located in the middle of the glass capillary.

[0010] Optionally, the narrow-diameter channel is in the shape of a square tube.

[0011] Optionally, a guiding port is provided at one end of the glass capillary tube far from the single-fiber capillary tube. The guiding port is communicated with the thin-diameter channel. The port of the guiding port close to the thin-diameter channel is consistent with the port of the thin-diameter channel, and the port of the guiding port far from the thin-diameter channel is larger than the port of the thin-diameter channel.

[0012] Optionally, the female fiber optic head further includes a steel tube, and one end of the steel tube is sleeved on the outer side wall of the glass capillary tube.

[0013] Optionally, there is a spacing between one end of the steel tube facing the single-fiber capillary tube and the single-fiber capillary tube.

[0014] The beneficial effects achieved by the present utility model are as follows:

[0015] 1. The combination of the sub-fiber optic head and the female fiber optic head has a simple overall structure, lower cost, and is suitable for mass production;

[0016] 2. During implementation, only the diameter of the thin-diameter optical fiber needs to be adjusted to be suitable for MCF optical fibers with different core distances.

[0017] To further understand the features and technical content of the present utility model, please refer to the following detailed description and drawings of the present utility model. However, the provided drawings are only for reference and illustration, and are not used to limit the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a cross-sectional view of the overall structure of the present utility model;

[0020] Figure 3 is a cross-sectional view of the glass capillary tube in the present utility model;

[0021] Figure 4 is a cross-sectional view of the single-fiber capillary tube in the present utility model;

[0022] Figure 5 is the arrangement and combination mode of multiple thin-diameter optical fibers in the present utility model.

[0023] Description of the reference numerals:

[0024] 100, single-fiber capillary tube; 110, single-fiber channel;

[0025] 200, MCF optical fiber;

[0026] 300, glass capillary tube; 310, thin-diameter channel; 320, guiding port;

[0027] 400, thin-diameter optical fiber;

[0028] 500, steel tube. Detailed implementation mode

[0029] The following are specific embodiments to illustrate the implementation mode of the present utility model. Those skilled in the art can understand the advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the spirit of the present utility model. Additionally, the drawings of the present utility model are only for simple schematic illustration and are not drawn according to actual dimensions. This is stated in advance. The following implementation modes will further detail the related technical content of the present utility model, but the disclosed content is not used to limit the protection scope of the present utility model.

[0030] This embodiment provides a 4-core MCF FIFO optical fiber coupling structure, as shown in combination with Figures 1 to 5 shown.

[0031] A 4-core MCF FIFO optical fiber coupling structure, which includes a sub-fiber head and a mother-fiber head; the sub-fiber head includes a single-fiber capillary 100 and an MCF optical fiber 200 disposed inside it; the mother-fiber head includes a glass capillary 300 and multiple thin-diameter optical fibers 400 arranged and combined inside it. One end of the single-fiber capillary 100 is docked with one end of the glass capillary 300, and one end of the MCF optical fiber 200 is coupled with one end of the corresponding thin-diameter optical fiber 400.

[0032] Specifically, the thin-diameter optical fiber 400 can be understood as an optical fiber with a diameter of 50 micrometers (when manufacturing the thin-diameter optical fiber 400, usually a conventional single-mode optical fiber with a cladding diameter of 125 micrometers is used, and a small section of the optical fiber with a diameter of 125 micrometers is changed to a smaller diameter, such as 44 micrometers, 50 micrometers, etc. through chemical etching); it is defined that the multiple are 16, and there are 9 specific arrangement and combination methods.

[0033] Optionally, a single-fiber channel 110 is arranged along the length direction inside the single-fiber capillary 100. The single-fiber channel 110 penetrates through both ends of the single-fiber capillary 100, and the single-fiber channel 110 is located in the middle of the single-fiber capillary 100.

[0034] Optionally, the shape of the single-fiber channel 110 is a circular tube.

[0035] Optionally, a thin-diameter channel 310 is arranged along the length direction inside the glass capillary 300. The thin-diameter channel 310 penetrates through one end of the glass capillary 300 facing the single-fiber capillary 100, and the thin-diameter channel 310 is located in the middle of the glass capillary 300.

[0036] Optionally, the shape of the thin-diameter channel 310 is a square tube.

[0037] Optionally, a guiding port 320 is provided at one end of the glass capillary 300 away from the single-fiber capillary 100. The guiding port 320 communicates with the narrow-diameter channel 310. The port of the guiding port 320 close to the narrow-diameter channel 310 is consistent with the port of the narrow-diameter channel 310, and the port of the guiding port 320 away from the narrow-diameter channel 310 is larger than the port of the narrow-diameter channel 310.

[0038] Optionally, the female fiber optic head further includes a steel tube 500, and one end of the steel tube 500 is sleeved on the outer side wall of the glass capillary 300.

[0039] Optionally, there is a gap between one end of the steel tube 500 facing the single-fiber capillary 100 and the single-fiber capillary 100.

[0040] The content disclosed above is only the preferred and feasible embodiment of the present utility model, and does not limit the protection scope of the present utility model. Therefore, all equivalent technical changes made by using the content of the specification and drawings of the present utility model are included in the protection scope of the present utility model. In addition, with the development of technology, the elements therein can be updated.

Claims

1. A 4-core MCF FIFO fiber optic coupling structure, characterized in that, This structure includes a sub-fiber head and a mother-fiber head; The sub-fiber head includes a single-fiber capillary and a MCF optical fiber disposed inside it; The mother-fiber head includes a glass capillary and a plurality of arranged and combined thin-diameter optical fibers disposed inside it. One end of the single-fiber capillary is docked with one end of the glass capillary, and one end of the MCF optical fiber is coupled with one end of the corresponding thin-diameter optical fiber.

2. The 4-core MCF FIFO optical fiber coupling structure according to claim 1, wherein A single-fiber channel is arranged along the length direction inside the single-fiber capillary. The single-fiber channel penetrates through both ends of the single-fiber capillary and is located in the middle of the single-fiber capillary.

3. The 4-core MCF FIFO optical fiber coupling structure according to claim 2, characterized in that, The shape of the single-fiber channel is circular tubular.

4. A 4-core MCF FIFO optical fiber coupling structure according to claim 1, characterized in that, A thin-diameter channel is arranged along the length direction inside the glass capillary. The thin-diameter channel penetrates through one end of the glass capillary facing the single-fiber capillary and is located in the middle of the glass capillary.

5. A 4-core MCF FIFO optical fiber coupling structure according to claim 4, characterized in that, The shape of the thin-diameter channel is square tubular.

6. The 4-core MCF FIFO optical fiber coupling structure according to claim 5, characterized in that A guiding port is arranged at one end of the glass capillary far from the single-fiber capillary. The guiding port communicates with the thin-diameter channel. The port of the guiding port close to the thin-diameter channel is consistent with the port of the thin-diameter channel, and the port of the guiding port far from the thin-diameter channel is larger than the port of the thin-diameter channel.

7. A 4-core MCF FIFO optical fiber coupling structure as described in claim 1, characterized in that, The mother-fiber head further includes a steel pipe, and one end of the steel pipe is sleeved on the outer side wall of the glass capillary.

8. The 4-core MCF FIFO optical fiber coupling structure according to claim 7, wherein There is a spacing between one end of the steel pipe facing the single-fiber capillary and the single-fiber capillary.

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