CN116953854A - Optical fiber connector and assembly thereof - Google Patents

Abstract

The application discloses an optical fiber connector and an assembly thereof, wherein the optical fiber connector comprises an optical connection inserting core and a plurality of optical fibers, each optical fiber penetrates through and protrudes out of the optical connection inserting core, and the length of each optical fiber protruding out of the optical connection inserting core is more than 0 nanometers and less than 1000 nanometers. Through the structure, the damage to the end face caused by repeated plugging is reduced, so that the plugging resistance of the optical fiber is improved.

Description

Optical fiber connector and assembly thereof

Technical Field

The application relates to the technical field of optical communication, in particular to an optical fiber connector and an assembly thereof.

Background

An optical connection ferrule is a structural member for fixing an optical transmission medium, such as an optical fiber or an optical waveguide, and for realizing optical connection together with other components such as an adapter, and is generally classified into a single core, a multi-core, and the like, for example, an MT ferrule capable of fixing a plurality of optical fibers is an optical connection ferrule of a multi-core.

MT-based multi-core optical connection technology has been widely used in the communication field, but when two optical connection ferrules are connected, the opposite pressure applied by the contact ends needs to be large enough to achieve the purpose of optical connection. The mode of providing enough crimping force to lead the optical fibers to form connection has larger damage to the end surfaces of the optical fibers, is not resistant to plugging and unplugging, and is difficult to meet the requirement of 200 times of plugging and unplugging.

Therefore, it is necessary to design a new optical fiber connection technology to increase the number of optical fiber plugging times.

Disclosure of Invention

The application mainly solves the technical problem of providing an optical fiber connector and an assembly thereof, which can reduce the damage of an end face caused by repeated plugging and unplugging so as to improve the plugging and unplugging resistance of an optical fiber.

The application provides an optical fiber connector which comprises an optical connection inserting core and a plurality of optical fibers, wherein each optical fiber penetrates through and protrudes out of the optical connection inserting core, and the length of each optical fiber protruding out of the optical connection inserting core is larger than 0 nanometers and smaller than 1000 nanometers.

Wherein, the end face of the optical fiber protruding out of one end of the optical connection inserting core is plated with an anti-reflection film or polished.

The application also provides an optical fiber connector assembly, which comprises a first optical fiber connector and a second optical fiber connector, wherein the first optical fiber connector comprises a first optical connection inserting core and a plurality of first optical fibers, each first optical fiber penetrates through and protrudes out of the first optical connection inserting core, the length of each first optical fiber protruding out of the first optical connection inserting core is larger than 0 nanometer and smaller than 1000 nanometers, and the second optical fiber connector is detachably connected with the first optical fiber connector.

The second optical fiber connector comprises a second optical connection inserting core and second optical fibers with the same number as the first optical fibers, and each second optical fiber is inserted into the second optical connection inserting core.

The second optical fiber penetrates through and protrudes out of the second optical connection inserting core, and the length of the second optical fiber protruding out of the second optical connection inserting core is larger than 0 nanometers and smaller than 3500 nanometers.

One end of the second optical fiber is sunken in the second optical connection inserting core, and the length of the second optical fiber sunken in the second optical connection inserting core is more than 0 nanometers and less than 1000 nanometers.

Wherein at least one of the first optical fibers in the first optical fiber connection member abuts the second optical fiber in the second optical fiber connection member.

Wherein the abutting force of the first optical fiber connector and the second optical fiber connector is greater than 4N.

Wherein when the number of the first optical fibers is 12, the abutting force of the first optical fiber connector and the second optical fiber connector is not more than 9.8N, and when the number of the first optical fibers is 24, the abutting force of the first optical fiber connector and the second optical fiber connector is not more than 19.6N.

The optical fiber connector assembly further comprises an optical connection adapter, wherein the optical connection adapter is used for fixing the first optical fiber connector and the second optical fiber connector, so that the first optical fiber of the first optical fiber connector is abutted with the second optical fiber of the second optical fiber connector.

The beneficial effects of the application are as follows: the length of the optical fiber penetrating through and protruding out of the optical connection inserting core is larger than 0 nanometers and smaller than 1000 nanometers, so that the abutting force between the optical fiber in the optical fiber connector and the optical fiber in the other optical fiber connector can be reduced, the abrasion of the end face of the optical fiber protruding out of one end of the optical connection inserting core is reduced, and the plugging resistance of the optical fiber connector is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an embodiment of a fiber optic connector according to the present application;

FIG. 2 is a schematic diagram of an embodiment of a fiber optic connector assembly according to the present application;

FIG. 3 is a schematic view of a second embodiment of a fiber optic connector assembly according to the present application;

FIG. 4 is a schematic structural view of a third embodiment of the fiber optic connector assembly of the present application.

Detailed Description

The following describes embodiments of the present application in detail with reference to the drawings.

In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, interfaces, techniques, etc., in order to provide a thorough understanding of the present application.

The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plurality" generally includes at least two, but does not exclude the case of at least one.

It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be understood that the terms "comprises," "comprising," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present application, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The present application provides a first optical fiber connector, and in particular, referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of an optical fiber connector according to the present application, and as shown in fig. 1, the optical fiber connector includes an optical connection ferrule 10 and a plurality of optical fibers 11.

Wherein each optical fiber 11 penetrates and protrudes from the optical connection ferrule 10. Specifically, the optical connection ferrule 10 includes a plurality of through holes, into which the optical fibers 11 are inserted and which pass out from the other end of the optical connection ferrule 10. Wherein the diameter of the through hole is the same as the diameter of the optical fiber 11 to fix the optical fiber 11.

In the present embodiment, each optical fiber 11 protrudes from the optical connection ferrule 10 by a length greater than 0 nm and less than 1000 nm. In the prior art, the length of the optical fiber protruding from the optical connection ferrule 10 is greater than 1000 nm and less than 3500 nm, and the end face of the optical fiber is easily worn out due to the overlong optical fiber. Therefore, the length of the optical fiber protruding out of the optical connection inserting core is reduced, so that the abrasion degree of the end face of the optical fiber is reduced.

The length of the optical fiber 11 protruding from the optical connection ferrule 10 is referred to as the fiber height, and specifically refers to the distance between the end surface of the optical fiber 11 protruding from one end of the optical connection ferrule 10 and the end surface of the optical connection ferrule 10.

In the present embodiment, the end face of the optical fiber 11 protruding from one end of the optical connection ferrule 10 is coated with an antireflection film. By plating an anti-reflection film on the end face of the optical fiber 11, the reflection of light is reduced, and the optical loss caused by the existence of an air medium or other medium when the optical fiber 11 is in optical transmission with another optical fiber is avoided, so that the light transmittance of the optical fiber 11 is improved.

In another embodiment, the optical fiber 11 protrudes from the end surface of one end of the optical connection ferrule 10 and is polished, so that the light transmittance of the optical fiber 11 can be improved.

In this embodiment, the end face of the optical fiber 11 may be a flat face or an inclined face. The end face of the optical fiber 11 is manufactured by grinding and polishing processes. Specifically, after the optical fiber 11 penetrates through and protrudes from the optical connection ferrule 10, the end surface of the optical fiber 11 protruding from the optical connection ferrule 10 is polished, so that the length of the optical fiber 11 protruding from the optical connection ferrule 10 is less than 1000 nanometers.

The end face of the optical fiber 11 includes a start end, which means that light enters the optical fiber from the face, and an end, which means that light exits the optical fiber from the face. In the present embodiment, the end face of the optical fiber 11 refers to the end of the optical fiber 11, the length of the optical fiber 11 protruding from the optical connection ferrule 10 refers to the distance between the end of the optical fiber 11 and the end face of the optical connection ferrule 10, and the end face of the optical connection ferrule 10 refers to the face close to the end of the optical fiber 11.

The beneficial effect of this embodiment is that, through making the optic fibre run through and protruding in the length of optical connection lock pin be greater than 0 nm, be less than 1000 nm, can reduce the optical fiber in the optical fiber connector and the butt force of optic fibre in another optical fiber connector to reduce the wearing and tearing of optic fibre protrusion in the terminal surface of the one end of optical connection lock pin, thereby improve the plug resistance of optical fiber connector. On the other hand, the optical fiber is coated with an anti-reflection film on the end face of the optical fiber to avoid light loss caused by the existence of air medium or other mediums, thereby improving the light transmittance of the optical fiber.

The present application further provides an optical fiber connector assembly, and in particular, referring to fig. 2, fig. 2 is a schematic structural diagram of an embodiment of the optical fiber connector assembly of the present application. As shown in fig. 2, the fiber optic connector assembly includes a first fiber optic connector 21 and a second fiber optic connector 22.

Wherein the first optical fiber connector 21 and the second optical fiber connector 22 are detachably connected.

The first optical fiber connector 21 includes a first optical connection ferrule 210 and a plurality of first optical fibers 211, wherein each first optical fiber 211 penetrates through and protrudes from the first optical connection ferrule 210, and a length of each first optical fiber 211 protruding from the first optical connection ferrule 210 is greater than 0 nm and less than 1000 nm.

In the present embodiment, the second optical fiber connector 22 includes a second optical connection ferrule 220 and a plurality of second optical fibers 221, and each of the second optical fibers 221 is inserted into the second optical connection ferrule 220. Wherein the number of the second optical fibers 221 is the same as the number of the first optical fibers 211, so that the first optical fibers 211 of the first optical fiber connector 21 and the second optical fibers 221 in the second optical fiber connector 22 form a one-to-one correspondence. Specifically, the second optical connection ferrule 220 is provided with a plurality of through holes, and the second optical fiber 221 is inserted into the through hole of the second optical connection ferrule 220.

In the present embodiment, the second optical fiber 221 penetrates through and protrudes from the second optical connection ferrule 220, and the length of the second optical fiber 221 protruding from the second optical connection ferrule 220 is greater than 0 nm and less than 3500 nm. In a specific embodiment, the length of the second optical fiber 221 protruding from the second optical connection ferrule 220 may be 0-1000 nm as long as the length of the first optical fiber 211 protruding from the first optical connection ferrule 210. In another embodiment, the length of the second optical fiber 221 protruding from the second optical connection ferrule 220 is greater than the length of the first optical fiber 211 protruding from the first optical connection ferrule 210 by the same amount and less than 3500 nm. If the length of the optical fiber protruding from the optical connection ferrule is greater than 3500 nm, the optical fiber is easily bent, and the transmission of light by the optical fiber is affected.

In the present embodiment, at least one first optical fiber 211 in the first optical fiber connector 21 abuts one second optical fiber 221 of the second optical fiber connector 22, thereby achieving optical transmission. On the other hand, the space between the remaining non-abutted optical fibers is reduced as much as possible, so that the air medium between the non-abutted first optical fiber 211 and the second optical fiber 221 is reduced, and the loss caused by the transmission of light through the air is reduced. In the present embodiment, the surface of the end surface of the first optical fiber 211 disposed near the second optical fiber 221 is plated with an antireflection film, thereby further reducing the transmission loss of light between the first optical fiber 211 and the second optical fiber 221. It should be noted that, in the present embodiment, the end surfaces of the first optical fiber 211 and the second optical fiber 221 include, but are not limited to, abutting to achieve light transmission, and the loss of the optical fiber transmitted through other mediums (such as air) is reduced by evaporating an anti-reflection film on the end surface of the optical fiber, wherein the anti-reflection film is a film layer formed by an anti-reflection optical medium.

In another embodiment, one end of the second optical fiber is recessed in the second optical connection ferrule, specifically, one end of the second optical fiber is inserted into the through hole of the second optical connection ferrule, and does not protrude from the end face of the second optical connection ferrule. Referring to fig. 3 in particular, fig. 3 is a schematic structural diagram of a second embodiment of the optical fiber connector assembly according to the present application. As shown in fig. 3, an end of the second optical fiber 321, which is close to the first optical fiber 311, does not penetrate the second optical connection ferrule 320, and is recessed in the through hole of the second optical connection ferrule 320. In the present embodiment, the concave length of the second optical fiber 321 is less than 1000 nm, so that the end surface of the first optical fiber 311 can abut against the end surface of the second optical fiber 321, thereby realizing optical transmission.

Wherein the first optical fiber connector 31 and the second optical fiber connector 32 are detachably connected.

The first optical fiber connector 31 includes a first optical connection ferrule 310 and a plurality of first optical fibers 311, each first optical fiber 311 penetrates through and protrudes from the first optical connection ferrule 310, and the length of each first optical fiber 311 protruding from the first optical connection ferrule 310 is greater than 0 nm and less than 1000 nm.

In the present embodiment, at least one first optical fiber 311 in the first optical fiber connector 31 abuts one second optical fiber 321 of the second optical fiber connector 32, thereby achieving optical transmission. On the other hand, the space between the rest of the optical fibers which are not in abutting contact is reduced as much as possible, so that the air medium between the first optical fiber 311 and the second optical fiber 321 which are not in abutting contact is reduced, and the loss caused by the light passing through the air is reduced. In the present embodiment, the surface of the end surface of the first optical fiber 311 disposed near the second optical fiber 321 is plated with an antireflection film, thereby further reducing the transmission loss of light between the first optical fiber 311 and the second optical fiber 321.

In another embodiment, the fiber optic connector assembly further includes an optical connection adapter, and in particular, referring to fig. 4, fig. 4 is a schematic structural view of a third embodiment of the fiber optic connector assembly according to the present application. As shown in fig. 4, the optical connection adapter 43 is used to fix the first optical fiber connector 41 and the second optical fiber connector 42 and provide a spring force to bring the first optical fiber of the first optical fiber connector 41 into abutment with the second optical fiber of the second optical fiber connector 42. Specifically, the end face of at least one first optical fiber is abutted against the end face of one second optical fiber.

In the present embodiment, the first optical fiber is abutted against the second optical fiber by the abutment force provided by the spring of the optical connection adapter 43. In its embodiment, the abutment force may also be provided by other components, not limited herein.

In the present embodiment, the abutment force between the first optical fiber connector 41 and the second optical fiber connector 42 is greater than 4 n, so that the first optical fiber in the first optical fiber connector 41 abuts against the second optical fiber in the second optical fiber connector 42. If the contact force between the first optical fiber connector 41 and the second optical fiber connector 42 is too small, the first optical fiber and the second optical fiber 42 are not firmly in contact with each other, and displacement or misalignment is likely to occur, thereby affecting light transmission. On the other hand, the contact force between the first optical fiber connector 41 and the second optical fiber connector 42 is not too large, and if too large, the contact surface between the first optical fiber and the second optical fiber is damaged.

When the number of first optical fibers of the first optical fiber connectors 41 is 12, the abutment force between the first optical fiber connectors 41 and the second optical fiber connectors 42 is not more than 9.8N, and when the number of first optical fibers of the first optical fiber connectors 41 is 24, the abutment force between the first optical fiber connectors 41 and the second optical fiber connectors 42 is not more than 19.6N, so that the abutment force between each first optical fiber and the second optical fiber is not more than 9.8N/12. Wherein the number of first optical fibers is the same as the number of second optical fibers. In the present embodiment, the number of first optical fibers is not less than 12. When the number of first optical fibers is M, the contact force between the first optical fiber connector 41 and the second optical fiber connector 42 is not smaller than 9.8N/12×m. In other embodiments, the abutment force of the first optical fiber connector 41 and the second optical fiber connector 42 is not less than 4 n and not more than 9.8n when the number of the first optical fibers is less than 12.

The beneficial effects of this embodiment are: the length of the first optical fiber penetrating through and protruding out of the first optical connection inserting core is larger than 0 nanometers and smaller than 1000 nanometers, so that the abutting force between the optical fiber in the first optical fiber connector and the second optical fiber in the second optical fiber connector can be reduced, abrasion of the abutting surface of the first optical fiber and the second optical fiber is reduced, and the plugging resistance of the first optical fiber connector and the second optical fiber connector is improved. In addition, the first optical fiber in the embodiment can realize light transmission with the second optical fiber with the optical fiber length of-1000 nm to 3500 nm, wherein the negative value of the optical fiber length refers to that the concave optical fiber is connected in the through hole of the ferrule.

The foregoing is only the embodiments of the present application, and therefore, the patent scope of the application is not limited thereto, and all equivalent structures or equivalent processes using the descriptions of the present application and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the application.

Claims (10)

1. The optical fiber connector is characterized by comprising an optical connection inserting core and a plurality of optical fibers, wherein each optical fiber penetrates through and protrudes out of the optical connection inserting core, and the length of each optical fiber protruding out of the optical connection inserting core is larger than 0 nanometers and smaller than 1000 nanometers.

2. The optical fiber connector according to claim 1, wherein an end face of the optical fiber protruding from one end of the optical connection ferrule is coated with an antireflection film or a polishing treatment.

3. The utility model provides an optical fiber connector subassembly, its characterized in that includes first optical fiber connector and second optical fiber connector, first optical fiber connector includes first optical connection lock pin and many first optical fibers, every first optical fiber run through and the protrusion in first optical connection lock pin, every first optical fiber the protrusion in the length of first optical connection lock pin is greater than 0 nm, and is less than 1000 nm, second optical fiber connector with first optical fiber connector can dismantle the connection.

4. The fiber optic connector assembly of claim 3, wherein the second fiber optic connector includes a second optical connection ferrule and the same number of second optical fibers as the first optical fibers, each of the second optical fibers being inserted within the second optical connection ferrule.

5. The fiber optic connector assembly of claim 4, wherein the second optical fiber extends through and protrudes from the second optical connection ferrule, the second optical fiber having a length protruding from the second optical connection ferrule greater than 0 nanometers and less than 3500 nanometers.

6. The fiber optic connector assembly of claim 4, wherein one end of the second optical fiber is recessed within the second optical connection ferrule, the second optical fiber being recessed within the second optical connection ferrule by a length greater than 0 nanometers and less than 1000 nanometers.

7. The fiber optic connector assembly of claim 4, wherein at least one of the first optical fibers of the first fiber optic connector abuts the second optical fiber of the second fiber optic connector.

8. The fiber optic connector assembly of claim 7, wherein the abutment force of the first fiber optic connector to the second fiber optic connector is greater than 4 newtons.

9. The fiber optic connector assembly of claim 8, wherein the first fiber optic connector has an abutment force with the second fiber optic connector of no greater than 9.8 newtons when the number of first fibers is 12 and no greater than 19.6 newtons when the number of first fibers is 24.

10. The fiber optic connector assembly of claim 3, further comprising an optical connection adapter securing the first and second fiber optic connectors such that the first optical fibers of the first fiber optic connector and the second optical fibers of the second fiber optic connector abut.