Single-core optical fiber ceramic ferrule and optical cable connector

Abstract

This application discloses a single-core fiber optic ceramic ferrule and an optical cable connector, belonging to the field of optical fiber technology. The single-core fiber optic ceramic ferrule is inserted into a first opening of a connector and has a ferrule hole communicating with a receiving cavity. A parallel cable member is fixedly connected to a second opening of the connector and used to seal the second opening; the parallel cable member has a parallel cable hole communicating with the receiving cavity. The etched ends of several single-core optical fibers can be inserted into the ferrule hole and partially accommodated within the receiving cavity. The parallel cable hole is used to secure the several etched transition sections after parallel cable connection, thereby preventing mutual compression between the etched ends of the several single-core optical fibers. Simultaneously, the parallel cable hole of the parallel cable member secures the several etched transition sections after parallel cable connection, thus preventing the cured adhesive from breaking or compressing the etched ends of the single-core optical fibers due to volume changes. This optical cable connector, by applying the aforementioned single-core fiber optic ceramic ferrule, can prevent the etched ends of the single-core optical fibers located inside the ferrule from mutual compression and bending.

Description

Technical Field

[0001] This application relates to the field of optical fiber technology, specifically to a single-core optical fiber ceramic ferrule and optical cable connector. Background Technology

[0002] Fiber ceramic ferrules are detachable fiber optic connectors that make optical channel connections more flexible. In MCFFIFO (Multi Core Fiber Fan in Fan out) connectors, at the single-core fiber end, multiple single-core etched fibers are often inserted into the single-core ferrule hole in a certain arrangement.

[0003] However, because the etched ends of single-core optical fibers are very small after etching and polishing, they are easily squeezed together when arranged in the housing area of ​​the ceramic ferrule, resulting in excessive bending, entanglement or twisting between the single-core optical fibers, leading to excessive fiber loss or direct breakage. At the same time, in order to fix the etched ends of the single-core optical fibers, a large amount of curing adhesive needs to be filled in the housing area. When the curing adhesive is subjected to thermal shock, its volume will change, thereby pulling or squeezing the etched ends of the single-core optical fibers, causing the etched ends of the single-core optical fibers to break or be stressed, resulting in increased loss.

[0004] Therefore, there is an urgent need for a single-core optical fiber ceramic ferrule and optical cable connector to solve the above problems. Utility Model Content

[0005] The purpose of this application is to solve or at least alleviate some or all of the aforementioned problems. Therefore, the purpose of this application is to provide a single-core fiber ceramic ferrule and optical cable connector that can prevent the etched ends of the single-core fiber from squeezing against each other and prevent changes in the volume of the cured adhesive from breaking or squeezing the etched ends of the single-core fiber.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] The single-core fiber ceramic ferrule provided in this application has an internal accommodating cavity in the connector. The connector has a first opening and a second opening that are both connected to the accommodating cavity. The ferrule is inserted into the first opening and has a ferrule hole that communicates with the accommodating cavity. The cable-connecting component is fixedly connected to the second opening and is used to seal the second opening. The cable-connecting component has a cable-connecting hole that communicates with the accommodating cavity. The etched end is inserted into the ferrule hole and partially accommodated in the accommodating cavity. The etched end located in the accommodating cavity is spaced apart from the inner sidewall of the accommodating cavity. This prevents the etched ends of several single-core fibers from squeezing each other, tangling or twisting, and avoids excessive fiber loss or direct breakage. At the same time, the cable-connecting hole of the cable-connecting component is used to secure several etched transition sections after cable connection, preventing the etched transition sections from shifting relative to each other, and indirectly securing the etched ends of several single-core fibers. This avoids the need to use curing adhesive to secure the etched ends, and further avoids the curing adhesive from pulling or squeezing the etched ends of the single-core fibers due to volume changes.

[0008] The optical cable connector provided in this application includes several single-core optical fibers and a single-core optical fiber ceramic ferrule. The etched ends of the several single-core optical fibers are inserted into the ferrule holes, thereby enabling more flexible connection of the optical channel and preventing the etched ends of the single-core optical fibers located inside the ferrule from being squeezed and bent against each other. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this application and these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of the structure of the single-core optical fiber ceramic ferrule of this application.

[0011] Figure label:

[0012] 100. Single-core optical fiber; 101. Corroded end; 102. Corroded transition section; 103. Uncorroded section;

[0013] 1. Connector; 11. Receiving cavity; 12. First opening; 13. Second opening;

[0014] 2. Insert pin; 21. Insert pin hole; 22. Tapered hole;

[0015] 3. First colloid;

[0016] 4. Cable paralleling component; 41. Cable paralleling hole; 411. Tapered transition hole; 412. Shaping hole;

[0017] 5. Soft silicone body. Detailed Implementation

[0018] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0019] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0020] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0021] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0022] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0023] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0024] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0025] Figure 1 This is a schematic diagram of the structure of the single-core optical fiber ceramic ferrule provided in this embodiment. Figure 1 As shown, the single-core fiber ceramic ferrule provided in this embodiment can insert several single-core optical fibers 100. Each single-core optical fiber 100 includes a sequentially connected etched end 101 and an etched transition section 102. The etched end 101 is one end of the single-core optical fiber 100. The single-core fiber ceramic ferrule includes a connector 1, a ferrule 2, and a cable-connecting component 4. The connector 1 has an internal accommodating cavity 11, and the connector 1 also has a first opening 12 and a second opening 13, both communicating with the accommodating cavity 11. The ferrule 2 is inserted into the first opening 12 and... The ferrule is provided with a ferrule hole 21 communicating with the receiving cavity 11; the cable-connecting component 4 is fixedly connected to the second opening 13 and is used to block the second opening 13. The cable-connecting component 4 has a cable-connecting hole 41 communicating with the receiving cavity 11; the etched ends 101 of several single-core optical fibers 100 can be inserted into the ferrule hole 21 and partially accommodated in the receiving cavity 11. The etched ends 101 located in the receiving cavity 11 are spaced apart from the inner sidewall of the receiving cavity 11. The cable-connecting hole 41 is used to secure the several etched transition sections 102 after cable connection, preventing the several etched transition sections 102 from shifting relative to each other. It should be noted that the number of single-core optical fibers 100 that can be inserted into the single-core optical fiber ceramic ferrule is not limited here. One, two, three, four, five, or even more fibers can be inserted. Those skilled in the art can reasonably set the number of single-core optical fibers 100 inserted into the single-core optical fiber ceramic ferrule according to actual needs.

[0026] The single-core fiber optic ceramic ferrule provided in this embodiment has a receiving cavity 11 inside the connector 1. The connector 1 has a first opening 12 and a second opening 13, both of which are connected to the receiving cavity 11. The ferrule 2 is inserted into the first opening 12 and has a ferrule hole 21 that communicates with the receiving cavity 11. The cable connector 4 is fixedly connected to the second opening 13 and is used to seal the second opening 13. The cable connector 4 has a cable connector hole 41 that communicates with the receiving cavity 11. The etched end 101 is inserted into the ferrule hole 21 and partially accommodated in the receiving cavity 11. The etched end 101 located in the receiving cavity 11 is connected to the receiving cavity 11. The inner sidewalls are spaced apart, so that the etched ends 101 of several single-core optical fibers 100 will not be squeezed against each other, nor will they be entangled or twisted, thus avoiding excessive fiber loss or direct breakage. At the same time, the parallel cable hole 41 of the parallel cable component 4 is used to secure several etched transition sections 102 after parallel cable connection, preventing the several etched transition sections 102 from shifting relative to each other, and indirectly securing the etched ends 101 of several single-core optical fibers 100. This avoids the need to use curing adhesive to secure the etched ends 101, and further avoids the curing adhesive from pulling or squeezing the etched ends 101 of the single-core optical fiber 100 due to volume changes.

[0027] In this embodiment, the ferrule 2 is bonded to the first opening 12 with thermosetting adhesive, and the cable 4 is bonded to the second opening 13 with thermosetting adhesive, thereby realizing the assembly of the single-core fiber ceramic ferrule.

[0028] Continue as Figure 1 As shown, the cable-connecting hole 41 includes a tapered transition hole 411 and a shaping hole 412 that are interconnected. The tapered transition hole 411 is located on the side of the shaping hole 412 away from the receiving cavity 11. The inner diameter of the tapered transition hole 411 on the side closer to the shaping hole 412 is smaller than the inner diameter of the side of the tapered transition hole 411 away from the shaping hole 412. The inner diameter profile of the shaping hole 412 matches the outer diameter profile of the several etched transition sections 102 after cable connection. Thus, the tapered transition hole 411 can be used to reserve cable connection shaping space, so that the etched transition sections 102 of several single-core optical fibers 100 are first micro-connected and shaped in the tapered transition hole 411 and then inserted into the shaping hole 412. The inner diameter profile of the shaping hole 412 matches the outer diameter profile of the several etched transition sections 102 after cable connection, thus securing the several etched transition sections 102 after cable connection and preventing the etched transition sections 102 from intertwining. It should be noted that, in order to ensure that the etched transition sections 102 of several single-core optical fibers 100 can be inserted into the shaping hole 412 in a parallel cable state, the etched transition sections 102 are allowed to be slightly bent in the tapered transition hole 411, as long as it does not affect the insertion of several etched transition sections 102 into the shaping hole 412 in a parallel cable state.

[0029] In some embodiments, the ferrule 21 is filled with thermosetting adhesive and the etched end 101 located inside the ferrule 21 is wrapped with it, thereby fixing the etched end 101 of the single-core optical fiber 100 and preventing the single-core optical fiber 100 from detaching from the ferrule 21.

[0030] Continue as Figure 1 As shown, the single-core fiber ceramic ferrule also includes a first colloid 3, which fills the tapered transition hole 411 and the shaping hole 412, thereby wrapping and fixing the corrosion transition section 102 located in the tapered transition hole 411 and the shaping hole 412 to prevent the corrosion transition sections 102 of several single-core optical fibers 100 located in the parallel cable hole 41 from tangling with each other.

[0031] It should be noted that the type of the first colloid 3 in this embodiment is not limited. It can be a thermosetting adhesive or an epoxy adhesive, as long as it can wrap and fix the corrosion transition section 102 located in the conical transition hole 411 and the shaping hole 412.

[0032] Continue as Figure 1 As shown, the single-core fiber ceramic ferrule also includes a soft silicone body 5, which fills the tapered transition hole 411 and is located on the side of the first colloid 3 away from the receiving cavity 11, thereby providing a buffer for the bending of the corrosion transition section 102 in the tapered transition hole 411 and preventing the corrosion transition section 102 from bending too much and causing excessive fiber loss.

[0033] Preferably, in addition to the etched end 101 and the etched transition section 102, the single-core optical fiber 100 also has an unetched section 103 connected to the etched transition section 102. The unetched section 103 is located on the side of the etched transition section 102 away from the etched end 101. A coating layer is provided on the outside of the unetched section 103. In order to protect the coating layer from bending and damage near the etched transition section 102, the connection position between the unetched section 103 and the etched transition section 102 is wrapped in a soft silicone body 5 to provide a buffer for the bending of the unetched section 103 and protect the unetched section 103.

[0034] In some embodiments, the connector 1 is a transparent connector tube, so that the staff can directly look into the cavity 11 of the connector 1 and observe the working status of the corrosion transition section 102 and corrosion end 101 of several single-core optical fibers 100, promptly detect whether the corrosion transition section 102 and corrosion end 101 inside the tube are excessively bent, entangled, or broken, and maintain the single-core optical fiber ceramic ferrule in time when problems occur.

[0035] Preferably, the first opening 12 and the second opening 13 are respectively opened at both ends of the transparent connecting tube, and the central axis of the first opening 12 coincides with the central axis of the second opening 13, thereby forming a straight single-core optical fiber ceramic ferrule.

[0036] Continue as Figure 1As shown, the ferrule 2 has a tapered hole 22 that communicates with the ferrule hole 21 on one side of the accommodating cavity 11. The inner diameter of the tapered hole 22 on the side closer to the ferrule hole 21 is smaller than the inner diameter of the side of the tapered hole 22 away from the ferrule hole 21. Therefore, when the etched end 101 of the single-core optical fiber 100 is inserted into the ferrule hole 21 through the tapered hole 22, the etched end 101 of the single-core optical fiber 100 can be guided to ensure that the etched end 101 can be inserted into the ferrule hole 21 to establish a reliable optical channel.

[0037] This embodiment also provides an optical cable connector, including several single-core optical fibers 100 and a single-core optical fiber ceramic ferrule. The etched ends 101 of the several single-core optical fibers 100 are inserted into the ferrule hole 21, thereby enabling more flexible connection of the optical channel and preventing the etched ends 101 of the single-core optical fibers 100 located inside the ferrule 2 from being squeezed and bent against each other.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this application.

Claims

1. A single-core optical fiber ceramic ferrule capable of inserting a plurality of single-core optical fibers (100), wherein the single-core optical fiber (100) comprises an etched end (101) and an etched transition section (102) connected in sequence, characterized in that, The single-core optical fiber ceramic ferrule includes: The connector (1) has a cavity (11) inside, and the connector (1) also has a first opening (12) and a second opening (13) that are connected to the cavity (11). Insert (2), the insert (2) is inserted into the first opening (12) and has an insert hole (21) communicating with the receiving cavity (11); A cable-connecting component (4) is fixedly connected to the second opening (13) and used to block the second opening (13). The cable-connecting component (4) has a cable-connecting hole (41) communicating with the accommodating cavity (11). The etched ends (101) of several single-core optical fibers (100) can be inserted into the ferrule hole (21) and partially housed in the receiving cavity (11). The etched ends (101) located in the receiving cavity (11) are spaced apart from the inner sidewall of the receiving cavity (11). The cable-connecting hole (41) is used to secure several etched transition sections (102) after cable connection.

2. The single-core optical fiber ceramic ferrule according to claim 1, characterized in that, The cable-connecting hole (41) includes a tapered transition hole (411) and a shaping hole (412) that are connected to each other. The tapered transition hole (411) is located on the side of the shaping hole (412) away from the receiving cavity (11). The inner diameter of the tapered transition hole (411) on the side closer to the shaping hole (412) is smaller than the inner diameter of the tapered transition hole (411) on the side away from the shaping hole (412). The inner diameter profile of the shaping hole (412) matches the outer diameter profile of the several corrosion transition sections (102) after they are cabled together.

3. The single-core optical fiber ceramic ferrule according to claim 2, characterized in that, The single-core optical fiber ceramic ferrule also includes a first colloid (3), which fills the tapered transition hole (411) and the shaping hole (412).

4. The single-core optical fiber ceramic ferrule according to claim 3, characterized in that, The single-core fiber ceramic ferrule also includes a soft silicone body (5), which fills the tapered transition hole (411) and is located on the side of the first colloid (3) away from the receiving cavity (11).

5. The single-core optical fiber ceramic ferrule according to claim 4, characterized in that, The single-core optical fiber (100) also includes an uncorroded section (103) connected to the corrosion transition section (102). The uncorroded section (103) is located on the side of the corrosion transition section (102) away from the corrosion end (101). The connection position between the uncorroded section (103) and the corrosion transition section (102) is wrapped inside the soft silicone body (5).

6. The single-core optical fiber ceramic ferrule according to any one of claims 1-5, characterized in that, The connector (1) is a transparent connecting tube.

7. The single-core optical fiber ceramic ferrule according to claim 6, characterized in that, The first opening (12) and the second opening (13) are respectively opened at both ends of the transparent connecting tube, and the central axis of the first opening (12) coincides with the central axis of the second opening (13).

8. The single-core optical fiber ceramic ferrule according to claim 7, characterized in that, The insert (2) has a tapered hole (22) that communicates with the insert hole (21) on one side inside the accommodating cavity (11). The inner diameter of the tapered hole (22) on the side close to the insert hole (21) is smaller than the inner diameter of the tapered hole (22) on the side away from the insert hole (21).

9. An optical fiber connector, characterized in that, It includes several single-core optical fibers (100) and a single-core optical fiber ceramic ferrule as described in any one of claims 1-8, wherein the etched ends (101) of the several single-core optical fibers (100) are inserted into the ferrule holes (21).

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