Ultra-low-loss single-core FC optical cable assembly

Abstract

The utility model relates to the technical field of optical fiber communication, and discloses an ultra-low-loss single-core FC optical cable assembly, which comprises a main body, a nut, a spring, an insertion frame piece, an insertion core assembly, an adjusting buckle, an optical cable and a net tail piece, an optical fiber is arranged in the optical cable, the optical cable is arranged in the insertion core assembly, the insertion core assembly is arranged in the main body in a penetrating mode and protrudes out of the two ends of the main body, the spring is arranged on the insertion core assembly in a sleeving mode, the insertion frame piece penetrates through one end of the insertion core assembly to be connected with the main body, the adjusting buckle and one end of the insertion core assembly are fixed and limited, the net tail piece is arranged on the adjusting buckle in a sleeving mode, and the nut is arranged on the main body in a sleeving mode. When the adjusting buckle rotates, the inserting core assembly is driven to rotate relative to the main body and the inserting frame piece, the deviation angle of the optical fiber can be controlled through rotation adjustment, and the ultra-low-loss transmission capacity of the connector is achieved through angle requirement designation. Through the design that the angle of the optical fiber is adjustable, the centering effect of the optical fiber is guaranteed, and deviation is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of optical fiber communication, and specifically relates to an ultra-low-loss single-core FC optical cable component. Background Art

[0002] As one of the mainstream universal passive connectors on the market, FC connector is suitable for high vibration environment and is of great help for data and energy transmission in fields such as data communication, telecommunications, measurement equipment and single-mode laser.

[0003] FC connectors have limitations in existing applications. In order to improve connector accuracy, ferrules with high concentricity are often selected. However, due to the influence of ferrule tolerance, the optical fiber cannot be centered in the ferrule hole after the glue is cured, and there is an offset. In the single-mode field, since the core of the single-mode optical fiber is only 9um, the offset directly affects the connector docking accuracy and increases the docking loss value. Utility Model Content

[0004] In order to solve the deficiencies of the prior art, the utility model provides an ultra-low-loss single-core FC optical cable assembly.

[0005] The technical effects to be achieved by the utility model are achieved through the following technical aspects:

[0006] An ultra-low-loss single-core FC optical cable assembly, comprising: a main body, a nut, a spring, a bracket component, a core component, an adjustment buckle, an optical cable and a net tail component;

[0007] An optical fiber is arranged in the optical cable, and the optical cable is arranged in the ferrule assembly. The ferrule assembly is passed through the main body and protrudes from the main body. The spring is sleeved on the ferrule assembly. The bracket member passes through one end of the ferrule assembly and is connected to the main body. The spring is arranged in a cavity formed by the connection between the main body and the bracket member. The adjustment buckle is limitedly connected to one end of the ferrule assembly, the net tail member is sleeved on the adjustment buckle, and the nut is sleeved on the main body.

[0008] In some embodiments, a limiting member is provided on one end of the insert assembly, a limiting hole matching with the limiting member is opened on the adjusting buckle, and the limiting member is limitedly connected to the side wall of the limiting hole.

[0009] In some embodiments, the limiting member is configured as a symmetrical double-ear boss.

[0010] In some embodiments, the number of optical fibers is at least two.

[0011] In some embodiments, the adjusting buckle is provided with an internal thread, the inserting bracket is provided with an external thread, and the inserting bracket is threadedly connected to the adjusting buckle.

[0012] In some embodiments, the ferrule assembly includes a ferrule, a ferrule tailstock, and a limiting tailstock that are sequentially fastened together;

[0013] One end of the optical fiber passes through the limiting tail seat and is arranged in the ferrule tail seat and the ferrule, and is bonded to the ferrule tail seat and the ferrule, the optical cable is passed through the ferrule tail seat and the limiting tail seat, and the optical cable is bonded to the ferrule tail seat, the main body is sleeved on the ferrule and the ferrule tail seat, and the ferrule setting is exposed outside the main body, the spring is sleeved on the ferrule tail seat, the bracket is sleeved on the limiting tail seat and the ferrule tail seat, and is connected to the main body, so that the bracket and the ferrule tail seat limit the two ends of the spring respectively, and the adjustment buckle is fixed and limited with the limiting tail seat.

[0014] In some embodiments, the adhesive used for bonding is 353ND glue.

[0015] In some embodiments, the ferrule is made of ceramic or metal.

[0016] In some embodiments, one end of the ferrule tail seat is interference fit with the ferrule, the other end of the ferrule tail seat is provided with a first connecting piece, the limiting tail seat is provided with a second connecting piece matching with the first connecting piece, and the first connecting piece is fixedly connected to the second connecting piece.

[0017] In some embodiments, the first connecting member is configured as an external thread, the second connecting member is configured as an internal thread, and the ferrule tail seat is threadedly connected to the limiting tail seat.

[0018] In summary, the utility model has at least the following benefits:

[0019] The utility model provides an ultra-low-loss single-core FC optical cable assembly. When it is necessary to adjust the angle of the key on the optical fiber and the main body, a high-magnification numerical angle optical fiber axis CCD magnifier can be used and assembled with an adapter. First, the key of the ultra-low-loss single-core FC optical cable assembly is facing upward and fixed in the adapter. The adhesive is pre-coated at the rear end of the plug-in frame in advance. Then the adjustment buckle and the core assembly are limited and fixed, and the adjustment buckle is connected to the rear end of the plug-in frame. The adjustment buckle is rotated. During the rotation process, since the adjustment buckle is fixedly connected to the core assembly, the core assembly can be driven to rotate as a whole. At this time, the main body and the plug-in frame and other parts are relatively stationary. When the angle reaches the preset requirement, stop the operation. After the adhesive solidifies quickly, the rotation angle of the core assembly is limited. The core assembly is prevented from rotating during use, and the elastic force of the core assembly is retained. In this way, the angle of the key on the optical fiber and the main body can be adjusted through the adjustment function of the adjustment buckle, which solves the problem that the angle of the optical fiber cannot be adjusted due to the displacement of the optical fiber after curing and assembly of the traditional FC connector. Through rotation adjustment, the optical fiber offset angle can be controlled, and the ultra-low loss transmission capability of the connector can be achieved by specifying the angle requirements. That is, the adjustable optical fiber angle design ensures the centering effect of the optical fiber and avoids offset.

[0020] The limitation of the traditional FC connector that the transmission channel is only a single channel due to structural limitations is solved. Through the structural design of the ferrule assembly and the adjustment buckle, the arrangement of multiple optical fibers in the ferrule can be controlled and adjusted, thereby increasing the total amount of transmitted data.

[0021] Compared with the traditional integrated ferrule, the installation of the ferrule assembly solves the problem of spring interference caused by glue solidification and thermal expansion of the traditional ferrule, which causes glue bags or sticky springs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of an ultra-low-loss single-core FC optical cable assembly according to an embodiment of the present application;

[0023] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the AA surface;

[0024] Figure 3 This is a schematic diagram of the exploded structure of an ultra-low-loss single-core FC optical cable assembly according to an embodiment of the present application;

[0025] Figure 4 It is a partial structural schematic diagram of an ultra-low-loss single-core FC optical cable assembly according to an embodiment of the present application;

[0026] Figure 5 This is a schematic diagram of the end surface structure of another embodiment of the present application;

[0027] Figure 6 This is a schematic diagram of the exploded structure of another embodiment of the present application.

[0028] Markings in the figure:

[0029] 1. Optical fiber; 2. Main body; 21. Key; 3. Nut; 4. Spring; 5. Plug-in component; 6. Ferrule assembly; 61. Ferrule; 62. Ferrule tail seat; 63. Limit tail seat; 631. Limiting component; 7. Adjusting buckle; 8. Optical cable; 9. Net tail component. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0032] In the following embodiments, the direction from the tail assembly toward the ferrule is considered as upward, and the direction from the ferrule toward the tail assembly is considered as downward.

[0033] Embodiment 1:

[0034] like Figures 1 to 4 As shown, in this embodiment, an ultra-low loss single-core FC optical cable assembly includes: a main body 2, a nut 3, a spring 4, a bracket 5, a core assembly 6, an adjusting buckle 7, an optical cable 8 and a net tail piece 9; an optical fiber 1 is arranged in the optical cable 8, the optical cable 8 is arranged in the core assembly 6, the core assembly 6 is passed through the main body 2 and protrudes from the main body 2, the spring 4 is sleeved on the core assembly 6, the bracket 5 passes through one end of the core assembly 6 and is connected to the main body 2, the spring 4 is arranged in a cavity formed by the connection between the main body 2 and the bracket 5, the adjusting buckle 7 is limitedly connected to one end of the core assembly 6, the net tail piece 9 is sleeved on the adjusting buckle 7, and the nut 3 is sleeved on the main body 2.

[0035] Specifically, the optical cable 8 is configured as a tube body with a hollow interior and two ends connected, and an optical fiber 1 is provided in the optical cable 8. Figure 3, the number of optical fibers 1 is set to 1. The inner cavity of the ferrule assembly 6 is a completely through hole, the front end of the ferrule assembly 6 protrudes from the front end of the main body 2, and the rear end of the ferrule assembly 6 protrudes from the rear end of the main body 2. A key 21 is provided on the outside of the front end of the main body 2, and the central inner cavity of the main body 2 is a through hole. The front end of the main body 2 is internally connected with the ferrule assembly 6 to prevent the ferrule assembly 6 from being separated from the main body 2 from the front end, and the inner surface of the rear end of the main body 2 is provided with an internal thread. The outer surface of the front end of the bracket 5 is provided with an external thread, and the front end of the bracket 5 is threadedly engaged with the rear end of the main body 2, and an abutment groove is provided on the inner surface of the front end of the bracket 5. The spring 4 is arranged in the cavity formed by the main body 2 and the abutment groove. At this time, the ferrule assembly 6 limits the front end of the spring 4, and the bottom of the abutment groove limits the rear end of the spring 4. The front end of the adjusting buckle 7 is fixedly limited with the rear end of the plug core assembly 6, wherein, in the initial state, the front end of the adjusting buckle 7 is rotatably connected with the rear end of the plug-in frame member 5, the adjusting buckle 7 is provided with an internal thread, and the plug-in frame member 5 is provided with an external thread. During installation, the plug-in frame member 5 is threadedly connected with the adjusting buckle 7 and bonded, so that the adjusting buckle 7 is rotated to the corresponding position and the glue is cured and fixedly connected with the plug-in frame member 5; the adjusting buckle 7 is integrally embedded in the net tail member 9, so that the adjusting buckle 7 is driven by rotating the net tail member 9. The nut 3 is sleeved on the outside of the main body 2 and the plug-in frame member 5.

[0036] So, reference Figure 3 , when it is necessary to adjust the angle of the Key key 21 on the optical fiber 1 and the main body 2, the high-power numerical angle optical fiber can be used to align the axis CCD magnifier and assemble with the adapter. First, the Key key of the ultra-low loss single-core FC cable assembly is facing upward and fixed in the adapter. The adhesive is pre-coated on the rear end external thread of the plug-in bracket 5 in advance. The adhesive can be selected but not limited to thread glue. Then the adjustment buckle 7 is limitedly connected with the core assembly 6, and the adjustment buckle 7 is connected to the rear end of the plug-in bracket 5. The adjustment buckle 7 is rotated. During the rotation process, since the adjustment buckle 7 is fixedly connected with the core assembly 6, the core assembly 6 can be driven to rotate as a whole. At this time, the main body 2 and the plug-in bracket 5 and other parts are relatively stationary. When the rotation depth and angle reach the preset requirements, stop the operation. After the thread glue is quickly solidified, the rotation angle of the core assembly 6 is limited. The core assembly 6 is prevented from rotating during use, and the elastic force of the core assembly 6 is retained. In this way, the angle of the Key key 21 on the optical fiber 1 and the main body 2 can be adjusted through the adjustment function of the adjustment buckle 7. This solves the problem of traditional FC connectors that after curing and assembly, the fiber 1 is offset and the angle of the fiber 1 cannot be adjusted. Through rotation adjustment, the offset angle of the fiber 1 can be controlled, and the ultra-low loss transmission capability of the connector can be achieved by specifying the angle requirements.

[0037] In order to facilitate the connection between the adjustment buckle 7 and the plug assembly 6, as shown in FIG. Figure 3As shown, in some embodiments, a limiting member 631 is provided on one end of the insert assembly 6, a limiting hole matching with the limiting member 631 is opened on the adjustment buckle 7, and the limiting member 631 is limitedly connected to the side wall of the limiting hole.

[0038] Specifically, a stopper 631 is provided at the rear end of the ferrule assembly 6, and a stopper hole matching the stopper 631 is provided in the inner cavity of the adjustment buckle 7, so as to realize the fixed stopper of the adjustment buckle 7 and the ferrule assembly 6, so as to drive the ferrule assembly 6 to rotate as a whole. Among them, the fixed stopper can also be set as a conventional stopper such as a buckle connection, which is not described in detail in this embodiment. The stopper 631 can be selected but not limited to a symmetrical double-ear boss, and can also be set as a cross-shaped boss, etc.

[0039] Example 2

[0040] This embodiment is a further implementation of embodiment 1. Figure 3 As shown, in this embodiment, the net tail piece 9 includes a pressing buckle 91 and a net tail 92 . The pressing buckle 91 is sleeved and fastened to the adjusting buckle 7 and the inserting frame piece 5 , and the net tail 92 is sleeved on the pressing buckle 91 .

[0041] Specifically, when the angle reaches the preset requirement, the operation is stopped, and the pressing buckle 91 of the tail piece of the net is covered on the tail of the adjusting buckle 7 and the inserting frame piece 5, and the adjusting buckle 7 is limited by mechanical crimping, thereby limiting the rotation angle of the insert assembly 6.

[0042] Example 3

[0043] This embodiment is similar to embodiment 1, except that Figure 5 to Figure 6 As shown, in this embodiment, at least two optical fibers 1 are provided.

[0044] Specifically, by setting the number of optical fibers 1 to more than two, compared with the traditional FC connector, the optical fibers 1 of this embodiment contain more, thereby making the transmission capacity stronger. In this embodiment, the number of optical fibers 1 is set to two.

[0045] Among them, the product requirements are as follows Figure 5The end effect diagram, the direction indicated by the arrow is the direction of the Key key 21, the dual optical fibers 1 are arranged in a horizontal line on the end face, and are arranged vertically at 90° with the Key key 21 of the main body 2. In the angle adjustment link of the optical fiber 1 of the connector, the adjustment buckle 7 and the ferrule assembly 6 are first fixed and limited, and the high-power numerical angle optical fiber 1 is used to axially CCD magnifier, and the Key key 21 of the connector is fixed in the adapter with the FC connector adapter. During the adjustment process, the ferrule assembly 6 is driven to rotate by rotating the adjustment buckle 7. When the rotation depth and angle reach the preset requirements, the operation is stopped. The thread glue is cured, and the adjustment buckle 7 is limited and fixed by curing means. In this way, the angle adjustment function of dual optical fibers or multiple optical fibers is realized, which solves the limitation of the transmission channel of the traditional FC connector being only a single channel due to structural limitations. Through the structural design of the ferrule assembly 6 and the adjustment buckle 7, the controllable and adjustable arrangement of multiple optical fibers in the ferrule is achieved. Thereby increasing the total amount of transmitted data.

[0046] Example 4

[0047] This embodiment is a further implementation of embodiment 1, 2 or 3. Figure 2 and Figure 3 As shown, in this embodiment, the ferrule assembly 6 includes a ferrule 61, a ferrule tail seat 62 and a limiting tail seat 63 which are fastened and connected in sequence; one end of the optical fiber 1 passes through the limiting tail seat 63 and is arranged in the ferrule tail seat 62 and the ferrule 61, and is bonded to the ferrule tail seat 62 and the ferrule 61, the optical cable 8 is passed through the ferrule tail seat 62 and the limiting tail seat 63, and the optical cable 8 is bonded to the ferrule tail seat 62, the main body 2 is sleeved on the ferrule 61 and the ferrule tail seat 62, and the ferrule 61 is exposed outside the main body 2, the spring 4 is sleeved on the ferrule tail seat 62, the bracket member 5 is sleeved on the limiting tail seat 63 and the ferrule tail seat 62, and is connected to the main body 2, so that the bracket member 5 and the ferrule tail seat 62 respectively limit the two ends of the spring 4, and the adjustment buckle 7 and the limiting tail seat 63 are fixed and limited.

[0048] Specifically, the inner cavities of the ferrule 61, the ferrule tail seat 62, and the limiting tail seat 63 are through holes. In this embodiment, the material of the ferrule 61 is ceramic; in another embodiment, the material of the ferrule 61 is metal, and its material is SUS 304. The front end of the ferrule tail seat 62 is radially protruding outward and is provided with a convex ring, and the cross-sectional shape of the convex ring as a whole is set to an inverted convex shape; the rear end of the ferrule 61 is tightly connected to the convex ring and is arranged at the center of the ferrule tail seat 62; the front end of the limiting tail seat 63 is provided with a connecting ring, which is fixedly connected to the rear end of the ferrule tail seat 62, and the rear end of the limiting tail seat 63 is provided with a limiting member 631 to fix the limit with the adjustment buckle 7. When the front end of the spring 4 passes through the limiting tail seat 63 and is sleeved on the core tail seat 62, the front end of the spring 4 is limited by the bottom surface of the convex ring to limit the tendency of its front end to move up; the front end of the bracket 5 passes through the optical cable 8 and is sleeved on the core tail seat 62, and abuts against the bottom surface of the convex ring. At this time, the rear end of the spring 4 is limited by the bottom of the abutment groove, and the rear end of the bracket 5 is sleeved on the outer side of the limiting tail seat 63 and the optical cable 8, and the inner cavity of the bracket 5 is spaced from the spring 4 and the limiting tail seat 63. The main body 2 is spaced from the core 61, and a step is provided in the middle of the through hole of the main body 2, dividing the through hole into upper and lower parts, and the step limits the top surface of the convex ring. The adjustment buckle 7 is sleeved and limited on the limiting tail seat 63.

[0049] In this embodiment, the ferrule is first cured, and then the connector is assembled as a whole. In another embodiment, the whole is assembled first, and then the ferrule glue is cured as a whole. That is, in this embodiment, a certain amount of adhesive is first pre-injected into the inner cavity of the assembled ferrule 61 and the ferrule tail seat 62. The adhesive is 353ND glue. After the adhesive is filled, the limiting tail seat 63 is fixedly connected with the ferrule tail seat 62, and then the optical fiber 1 connected to the optical cable 8 is inserted and high-temperature cured. After the adhesive is cured, it is assembled with the spring 4, the main body 2, the nut 3, the bracket 5, the adjustment buckle 7 and the net tail 9.

[0050] In this way, the split structure of the plug assembly 6 can solve the problem of spring interference caused by glue bags formed by glue or glue bonding springs due to the expansion of glue due to heat and enhanced fluidity through the structural characteristics of the tail seat 63 after the pre-injection of glue. During the curing process, the tail seat 63 can act as a barrier to prevent the glue from overflowing to the outside of the plug assembly 6 due to heat or forming a glue bag of uncontrollable size at the tail seat of the plug assembly 6. Thereby solving the problem of glue interference with the spring 4. At the same time, compared with the traditional long tail handle plug assembly, the split plug assembly does not need to fill the entire tail handle with glue, but only needs to fill it to the tail seat of the traditional plug, which greatly reduces the cost of glue use.

[0051] In order to facilitate the fastening connection of the ferrule 61, the ferrule tail seat 62 and the limiting tail seat 63, as shown in FIG. Figure 3As shown, in some embodiments, one end of the ferrule tail seat 62 is interference fit with the ferrule 61, the other end of the ferrule tail seat 62 is provided with a first connecting piece, the limiting tail seat 63 is provided with a second connecting piece matching with the first connecting piece, and the first connecting piece is fixedly connected to the second connecting piece.

[0052] Specifically, the rear end of the ferrule 61 is inserted into the convex ring by interference fit, so that the ferrule 61 and the ferrule tail seat 62 are relatively fixed. The ferrule tail seat 62 and the limiting tail seat 63 are fixedly connected to the second connecting member through the first connecting member.

[0053] In order to facilitate the fixed installation of the ferrule tail seat 62 and the limiting tail seat 63, as shown in FIG. Figure 3 As shown, in some embodiments, the first connecting member is configured as an external thread, the second connecting member is configured as an internal thread, and the ferrule tail seat 62 is threadedly connected to the limiting tail seat 63 .

[0054] Specifically, the rear outer surface of the ferrule tail seat 62 is provided with an external thread, and the inner surface of the connecting ring is provided with an internal thread, so that the ferrule tail seat 62 and the limiting tail seat 63 are connected through threaded cooperation, thereby making the rear ferrule tail seat 62 and the limiting tail seat 63 relatively fixed.

[0055] In the above embodiments, all threaded fittings are coated with a certain amount of adhesive or other fixing means on their threaded surfaces, including thread glue, welding fixation, etc., so that each loose part with threaded fittings is fixedly connected to avoid secondary separation after the loose parts are connected.

[0056] It can be understood that the name of the present application can also be set to an ultra-low loss FC optical cable assembly.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0059] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0060] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0061] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. An ultra-low loss single-core FC optical cable assembly, characterized in that: include: A main body (2), a nut (3), a spring (4), a bracket component (5), a core assembly (6), an adjustment buckle (7), an optical cable (8) and a net tail component (9); The optical cable (8) is provided with an optical fiber (1). The optical cable (8) is arranged in the ferrule assembly (6). The ferrule assembly (6) is inserted into the main body (2) and protrudes from the main body (2). The spring (4) is sleeved on the ferrule assembly (6). The bracket member (5) passes through one end of the ferrule assembly (6) and is connected to the main body (2). The spring (4) is arranged in a cavity formed by the connection between the main body (2) and the bracket member (5). The adjustment buckle (7) is limitably connected to one end of the ferrule assembly (6). The net tail member (9) is sleeved on the adjustment buckle (7). The nut (3) is sleeved on the main body (2).

2. The ultra-low loss single-core FC optical cable assembly according to claim 1, characterized in that: A limiting member (631) is provided on one end of the insert assembly (6), a limiting hole matching the limiting member (631) is provided on the adjusting buckle (7), and the limiting member (631) is connected to the side wall of the limiting hole in a limiting manner.

3. The ultra-low loss single-core FC optical cable assembly according to claim 2, characterized in that: The limiting member (631) is configured as a symmetrical double-ear boss.

4. The ultra-low loss single-core FC optical cable assembly according to claim 1, characterized in that: The optical fiber (1) is provided to be at least one.

5. The ultra-low loss single-core FC optical cable assembly according to claim 1, characterized in that: The adjusting buckle (7) is provided with an internal thread, the inserting frame member (5) is provided with an external thread, and the inserting frame member (5) is threadedly connected to the adjusting buckle (7).

6. The ultra-low loss single-core FC optical cable assembly according to claim 1, characterized in that: The ferrule assembly (6) comprises a ferrule (61), a ferrule tail seat (62) and a limiting tail seat (63) which are fastened and connected in sequence; One end of the optical fiber (1) passes through the limiting tail seat (63) and is arranged in the ferrule tail seat (62) and the ferrule (61), and is bonded to the ferrule tail seat (62) and the ferrule (61); the optical cable (8) passes through the ferrule tail seat (62) and the limiting tail seat (63), and the optical cable (8) is bonded to the ferrule tail seat (62); the main body (2) is sleeved on the ferrule (61) and the ferrule tail seat (62). ), and the main body (2) exposes the insert core (61), the spring (4) is sleeved on the insert core tail seat (62), the insert bracket (5) is sleeved on the limiting tail seat (63) and the insert core tail seat (62), and is connected to the main body (2), so that the insert bracket (5) and the insert core tail seat (62) respectively limit the two ends of the spring (4), and the adjustment buckle (7) and the limiting tail seat (63) are fixed and limited.

7. The ultra-low-loss single-core FC optical cable assembly according to claim 6, characterized in that: The adhesive used for bonding is 353ND glue.

8. The ultra-low-loss single-core FC optical cable assembly according to claim 6, characterized in that: The material of the insert (61) is ceramic or metal.

9. The ultra-low-loss single-core FC optical cable assembly according to claim 6, characterized in that: One end of the ferrule tail seat (62) is interference fit with the ferrule (61), the other end of the ferrule tail seat (62) is provided with a first connecting piece, the limiting tail seat (63) is provided with a second connecting piece matching with the first connecting piece, and the first connecting piece is fixedly connected to the second connecting piece.

10. The ultra-low-loss single-core FC optical cable assembly according to claim 9, characterized in that: The first connecting member is configured as an external thread, the second connecting member is configured as an internal thread, and the ferrule tail seat (62) is threadedly connected to the limiting tail seat (63).

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