Temperature-resistant intensive beam-expanding optical fiber connector

Abstract

The utility model discloses a temperature-resistant intensive beam-expanding optical fiber connector, which relates to the technical field of optical fiber connectors and comprises a male head assembly, a female head assembly and a flange adapter, the male head assembly and the female head assembly are matched with each other, the flange adapter is sleeved outside the male head assembly and the female head assembly, and the male head assembly and the female head assembly are simultaneously inserted into the flange adapter. Compared with an existing contact type structure, the connector has the advantages that the end faces of the male connector insertion core and the female connector insertion core are prevented from being abraded, the service life is prolonged, meanwhile, the connector is not sensitive to dust and is hardly influenced by the cleanliness degree of an installation environment, the connection relation between the optical fiber assembly and the insertion cores is accurate, and the reliability of the connector is improved. Light beam coupling can be better achieved, expansibility is high, expansion can exceed 120 cores, meanwhile, rapid replacement between different optical fibers can be achieved, repeatability is good, and interchange capacity is high.

Description

Technical Field

[0001] This utility model relates to the field of fiber optic connector technology, specifically to a temperature-resistant, densely expanded fiber optic connector. Background Technology

[0002] Currently, it is difficult to ensure that the polishing parameters of the fiber end faces are consistent during the production of commonly used MPO connectors, resulting in poor connector interchangeability. When the connectors are paired, all fiber end faces need to be in close physical contact at the same time to work properly, because the end faces must be clean and free of any dust particles. Otherwise, the optical signal will be blocked or even the optical interface will be damaged, causing the connector to malfunction. At the same time, if air gaps are generated, light will be reflected multiple times between the fiber end faces (Faber cavity), which will also seriously affect the stability of the signal.

[0003] To ensure that all fiber end faces are in close contact simultaneously, a great deal of working pressure must be applied to the fiber optic connector. Even so, it is still often impossible to guarantee that all fibers are in contact at the same time. Furthermore, due to this design, traditional MPO connector end faces are more prone to damage. Therefore, traditional MPO connectors must be inspected and maintained regularly to ensure reliable link transmission, which increases the application cost. Utility Model Content

[0004] The purpose of this invention is to provide a temperature-resistant, densely packed expanded fiber optic connector to solve the technical problems mentioned in the background.

[0005] The technical problem to be solved by this utility model can be achieved through the following technical solution:

[0006] The objective of this invention can be achieved through the following technical solution: a temperature-resistant, high-density expanded fiber optic connector.

[0007] Includes a male connector assembly and a female connector assembly that are matched with each other, as well as a flange adapter sleeved on the outside of the male connector assembly and the female connector assembly;

[0008] The male connector assembly includes a male connector housing and a male connector ferrule disposed within the male connector housing. The female connector assembly includes a female connector housing and a female connector ferrule disposed within the female connector housing. Both the male and female connector ferrules contain optical fiber assemblies. Both the male and female connector ferrules are inserted into the flange adapter. There is a gap between the opposite end faces of the male and female connector ferrules, and the optical fiber assemblies in the male connector ferrule and the optical fiber assemblies in the female connector ferrule are beam-coupled.

[0009] The optical fiber assembly includes a regular optical fiber, the output end of which is provided with a microlens, and the regular optical fiber and the microlens are fused together.

[0010] As a further aspect of this utility model: both the male connector and the female connector have an anti-reflective coating on their outer surfaces.

[0011] As a further embodiment of this utility model: both the male connector and the female connector have through holes for installing the optical fiber assembly, and the optical fiber assembly is glued to the male connector and the female connector.

[0012] As a further embodiment of this utility model: the flange adapter has an internal cavity for the insertion of the male connector and the female connector.

[0013] As a further embodiment of this utility model: the end face of the male connector is provided with a limiting guide pin, and the end face of the female connector is provided with a limiting insertion hole that matches the limiting guide pin.

[0014] As a further embodiment of this utility model: a guide groove is provided on the inner wall of the cavity of the flange adapter, and snap-fit ​​pieces for engaging the male and female plugs are symmetrically arranged in the cavity of the flange adapter.

[0015] As a further embodiment of this utility model: the flange adapter is provided with a gasket in the middle for separating the male plug and the female plug, both the male plug and the female plug are provided with fitting protrusions that match the guide groove, and both the male plug and the female plug are provided with snap-fit ​​grooves that match the snap-fit ​​piece.

[0016] As a further embodiment of this utility model: both the upper and lower end faces of the male head shell and the female head shell are provided with receiving shells, the receiving shells are provided with limiting grooves, and limiting sliders are slidably arranged inside the limiting grooves.

[0017] As a further embodiment of this utility model: one end of the limiting slide groove is provided with a traction spring for pulling the limiting slider, and the end face of the limiting slider is provided with a snap-fit ​​pin.

[0018] As a further embodiment of this utility model: the upper and lower end faces of the flange adapter are provided with snap-fit ​​plates that match the snap-fit ​​pin shaft, and the ends of the snap-fit ​​plates are provided with snap-fit ​​grooves.

[0019] The beneficial effects of this utility model are:

[0020] 1. In this utility model, the male and female connector assemblies are simultaneously inserted into the flange adapter. After insertion, a gap is left between the male and female connector ferrules, and they do not make contact. Compared with the existing contact structure, this avoids wear on the end faces of the male and female connector ferrules, extends their service life, and is not sensitive to dust. It is almost unaffected by the cleanliness of the installation environment. The connection between the fiber optic assembly and the ferrule is accurate, which facilitates better beam coupling. It has strong scalability, and the expansion can exceed 120 cores. At the same time, it can realize quick replacement between different fibers, has good repeatability, and strong interchangeability.

[0021] 2. In this utility model, the operator can pull the snap-fit ​​pin shaft, causing the limit slider to slide along the direction of the limit groove, causing the traction spring to deform and be stretched. Then, the snap-fit ​​plate is rotated, causing the snap-fit ​​plate to snap into the snap-fit ​​pin shaft. The tension generated by the traction spring ensures that the end faces of the male and female plugs are always in close contact with both ends of the flange adapter, further preventing dust from entering through gaps between the male and female plugs and the flange adapter. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 This is a three-dimensional schematic diagram of the device in this utility model;

[0024] Figure 2 This is a three-dimensional schematic diagram of the male connector component in this utility model;

[0025] Figure 3 This is a three-dimensional schematic diagram of the female connector assembly in this utility model;

[0026] Figure 4 This is a three-dimensional schematic diagram of the flange adapter in this utility model;

[0027] Figure 5 This is a schematic diagram of the assembly structure of the device in this utility model;

[0028] Figure 6 This is a schematic diagram of the optical fiber assembly structure in this utility model.

[0029] In the diagram: 1. Male connector assembly; 101. Male connector housing; 102. Male connector ferrule; 103. Limiting guide pin; 2. Female connector assembly; 201. Female connector housing; 202. Female connector ferrule; 203. Limiting socket; 3. Flange adapter; 301. Guide groove; 302. Snap-fit ​​piece; 4. Fiber optic assembly; 401. Ordinary fiber optic cable; 402. Microlens; 5. Gasket; 6. Fitting protrusion; 7. Snap-fit ​​groove; 8. Receiving shell; 9. Limiting slide groove; 10. Limiting slider; 11. Traction spring; 12. Snap-fit ​​pin; 13. Snap-fit ​​plate. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] like Figure 1-6 As shown, a high-temperature resistant, densely packed fiber optic connector includes a male connector assembly 1 and a female connector assembly 2 that are matched with each other, and a flange adapter 3 that is sleeved on the outside of the male connector assembly 1 and the female connector assembly 2.

[0032] The male connector assembly 1 includes a male connector housing 101 and a male connector ferrule 102 disposed within the male connector housing 101. The female connector assembly 2 includes a female connector housing 201 and a female connector ferrule 202 disposed within the female connector housing 201. Both the male connector ferrule 102 and the female connector ferrule 202 are provided with optical fiber assemblies 4. Both the male connector ferrule 102 and the female connector ferrule 202 are inserted into the flange adapter 3. There is a gap between the opposite end faces of the male connector ferrule 102 and the female connector ferrule 202, and the optical fiber assemblies 4 in the male connector ferrule 102 and the female connector ferrule 202 are beam coupled.

[0033] The optical fiber assembly 4 includes a regular optical fiber 401, the output end of which is provided with a microlens 402, and the regular optical fiber 401 and the microlens 402 are fused together.

[0034] The male ferrule 102 and the female ferrule 202 are inserted into the flange adapter 3, thereby assembling the male ferrule 102 and the female ferrule 202. After insertion, a gap remains between the male ferrule 102 and the female ferrule 202, preventing contact. Compared with the existing contact structure, this avoids wear on the end faces of the male ferrule 102 and the female ferrule 202, extending their service life. It is also insensitive to dust and almost unaffected by the cleanliness of the installation environment. For a microlens 402 (optical fiber) of a specific length, when the beam of ordinary optical fiber 401 is input, it will be converted into parallel light after being expanded by the microlens 402. Ordinary optical fiber 401 and microlens 402 of a specific length are fused together to achieve collimation and coupling of the beam, realizing the spatial optical path transmission of the product. Ordinary optical fiber 401 can be single-mode fiber, multi-mode fiber, or fiber with special treatment at the core end, such as TEC fiber treatment, secondary beam expansion, etc. The microlens can be a Glen or Cl ens refers to the fusion splicing of ordinary optical fiber 401 with a specific microlens 402, or the fusion / bonding of an expansion fiber, such as a coreless optical fiber, between ordinary optical fiber 401 and microlens 402.

[0035] In this embodiment, specifically, the outer surfaces of both the male connector 102 and the female connector 202 are coated with an anti-reflective coating to prevent reflection from the end faces of the male connector 102 and the female connector 202, which would affect the beam coupling effect.

[0036] In this embodiment, specifically, both the male ferrule 102 and the female ferrule 202 have through holes for installing the optical fiber assembly 4, and the optical fiber assembly 4 is glued to the male ferrule 102 and the female ferrule 202. The optical fiber assembly 4 is arranged on the ferrule and uses a non-contact coupling method to ensure accurate connection between the optical fiber assembly 4 and the ferrule, which facilitates better beam coupling and has strong scalability, allowing expansion to exceed 120 cores.

[0037] In this embodiment, specifically, the flange adapter 3 has a cavity inside for the male plug 102 and the female plug 202 to be inserted.

[0038] In this embodiment, specifically, the end face of the male connector 102 is provided with a limiting guide pin 103, and the end face of the female connector 202 is provided with a limiting insertion hole 203 that matches the limiting guide pin 103. A guide groove 301 is provided on the inner wall of the cavity of the flange adapter 3. symmetrically arranged in the cavity of the flange adapter 3 are snap-fit ​​pieces 302 for engaging the male connector 102 and the female connector 202. A middle section of the flange adapter 3 is provided for separating the male connector 102 and the female connector 202. The gasket 5, male connector 102, and female connector 202 are all provided with mating protrusions 6 that match the guide groove 301. Both male connector 102 and female connector 202 are provided with snap-fit ​​grooves 7 that match the snap-fit ​​piece 302. When the male connector 102 and female connector 202 are inserted into the flange adapter 3, the mating protrusions 6 on the male connector 102 and female connector 202 slide into the guide groove 301, thereby engaging the male connector 102 and female connector 202. The movement of 2 is guided by the limiting guide pin 103, which is inserted into the limiting socket 203. Under the action of the limiting guide pin 103, the two sets of optical fiber components 4 are coaxial and the beam is coupled. The gap under the minimum insertion loss of the optical fiber component 4 is selected as the thickness of the gasket 5 to avoid affecting the beam coupling effect of the two sets. The gasket 5 keeps the distance between the male ferrule 102 and the female ferrule 202 constant. The gasket 5 can be a solid metal or non-metal material of fixed thickness. In addition to setting a solid gasket 5, a non-solid gap of the required thickness can also be reserved by designing the flange adapter 3. During the process of inserting the male ferrule 102 and the female ferrule 202 into the flange adapter 3, the snap-fit ​​piece 302 engages with the snap-fit ​​groove 7. The snap-fit ​​piece 302 has a certain elasticity. The snap-fit ​​piece 302 and the snap-fit ​​groove 7 engage to fix the male component 1, the female component 2 and the flange adapter 3 and prevent slippage. At the same time, the snap-fit ​​groove 7 is provided with a bevel, which can be disassembled after fixing and is easy to use.

[0039] In this embodiment, specifically, a receiving shell 8 is provided on the upper and lower end faces of both the male head shell 101 and the female head shell 201. A limiting groove 9 is formed inside the receiving shell 8, and a limiting slider 10 is slidably arranged inside the limiting groove 9. A traction spring 11 is provided at one end of the limiting groove 9 to pull the limiting slider 10. A snap-fit ​​pin 12 is provided on the end face of the limiting slider 10. A snap-fit ​​plate 13 matching the snap-fit ​​pin 12 is provided on both the upper and lower end faces of the flange adapter 3. A snap-fit ​​groove is formed at the end of the snap-fit ​​plate 13. When the male head insert 102 and... When the female connector 202 is inserted into the flange adapter 3, the operator can pull the locking pin 12 to make the limiting slider 10 slide along the direction of the limiting groove 9, causing the traction spring 11 to deform and be stretched. Then, the locking plate 13 is rotated to make the locking plate 13 and the locking pin 12 lock together. The tension generated by the traction spring 11 keeps the end faces of the male connector 102 and the female connector 202 in close contact with both ends of the flange adapter 3, further preventing dust from entering through gaps between the male connector 102, the female connector 202 and the flange adapter 3.

[0040] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A temperature-resistant, high-density expanded fiber optic connector, characterized in that: It includes a male connector assembly (1) and a female connector assembly (2) that are matched with each other, and a flange adapter (3) sleeved on the outside of the male connector assembly (1) and the female connector assembly (2). The male connector assembly (1) includes a male connector housing (101) and a male connector ferrule (102) disposed within the male connector housing (101). The female connector assembly (2) includes a female connector housing (201) and a female connector ferrule (202) disposed within the female connector housing (201). Both the male connector ferrule (102) and the female connector ferrule (202) are provided with optical fiber assemblies (4). Both the male connector ferrule (102) and the female connector ferrule (202) are inserted into the flange adapter (3). There is a gap between the opposite end faces of the male connector ferrule (102) and the female connector ferrule (202), and the optical fiber assemblies (4) in the male connector ferrule (102) are beam-coupled with the optical fiber assemblies (4) in the female connector ferrule (202). The optical fiber assembly (4) includes a common optical fiber (401), and a microlens (402) is provided at the output end of the common optical fiber (401). The common optical fiber (401) and the microlens (402) are fused together.

2. The temperature-resistant, high-density expanded fiber optic connector according to claim 1, characterized in that, Both the male connector (102) and the female connector (202) have an anti-reflective coating on their outer surfaces.

3. The temperature-resistant, high-density expanded fiber optic connector according to claim 1, characterized in that, Both the male connector (102) and the female connector (202) have through holes for installing the optical fiber assembly (4), and the optical fiber assembly (4) is glued to the male connector (102) and the female connector (202).

4. The temperature-resistant, high-density expanded fiber optic connector according to claim 1, characterized in that, The flange adapter (3) has a cavity inside for the male plug (102) and the female plug (202) to be inserted.

5. The temperature-resistant, high-density expanded fiber optic connector according to claim 1, characterized in that, The male connector (102) has a limiting guide pin (103) on its end face, and the female connector (202) has a limiting hole (203) on its end face that matches the limiting guide pin (103).

6. The temperature-resistant, high-density expanded fiber optic connector according to claim 4, characterized in that, The flange adapter (3) has a guide groove (301) on the inner wall of the cavity, and the flange adapter (3) has symmetrically arranged snap-fit ​​pieces (302) for engaging the male plug (102) and the female plug (202) in the cavity.

7. A temperature-resistant, high-density expanded fiber optic connector according to claim 6, characterized in that, The flange adapter (3) is provided with a gasket (5) in the middle for separating the male plug (102) and the female plug (202). Both the male plug (102) and the female plug (202) are provided with fitting protrusions (6) that match the guide groove (301). Both the male plug (102) and the female plug (202) are provided with snap grooves (7) that match the snap piece (302).

8. A temperature-resistant, high-density expanded fiber optic connector according to claim 1, characterized in that, Both the male head housing (101) and the female head housing (201) are provided with a receiving shell (8) on their upper and lower end faces. A limiting groove (9) is provided inside the receiving shell (8), and a limiting slider (10) is slidably provided inside the limiting groove (9).

9. A temperature-resistant, high-density expanded fiber optic connector according to claim 8, characterized in that, One end of the limiting slide groove (9) is provided with a traction spring (11) that pulls the limiting slider (10), and the end face of the limiting slider (10) is provided with a snap-fit ​​pin (12).

10. A temperature-resistant, densely packed, expanded fiber optic connector according to claim 9, characterized in that, The flange adapter (3) is provided with a snap-fit ​​plate (13) on both the upper and lower end faces, which matches the snap-fit ​​pin (12). The snap-fit ​​plate (13) has a snap-fit ​​groove at its end.

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