Optical fiber termination assembly and underwater optical cable splicing device

Abstract

The application relates to an optical fiber terminal assembly and an underwater optical cable splicing device, which is used in the underwater optical cable splicing device and comprises a fiber disc assembly and an adapter fixing assembly. The fiber disc assembly comprises a fiber disc with two installation areas distributed along the length direction of the fiber disc. The adapter fixing assembly is arranged in the installation areas and is used for installing adapters. The adapter fixing assemblies in the two installation areas are spaced apart along the width direction of the fiber disc. The application divides two installation areas on the fiber disc and arranges the adapter fixing assembly. The adapter fixing assembly can install adapters. When optical fiber splicing is performed, connectors preassembled on the optical fiber can be directly connected with the adapters, so that the optical fiber can be rapidly spliced. Compared with a fusion scheme, the optical fiber splicing requires lower construction technology of operators and improves the optical fiber splicing efficiency.

Description

Technical Field

[0001] This application relates to the field of optical cable communication technology, and in particular to an optical fiber termination assembly and an underwater optical cable splicing device. Background Technology

[0002] With the rapid development of the communications industry, fiber optic cable laying has expanded from land to sea. Submarine cables are generally manufactured in sections and spliced ​​together using junction boxes to meet the needs of long-distance transmission.

[0003] Existing submarine optical cable junction boxes often employ fusion splicing, requiring the assembly of the optical cable and junction box at sea before splicing each fiber individually, resulting in a lengthy construction period. Furthermore, the offshore / water-based construction environment is far more complex than the terrestrial environment, demanding higher skill levels from operators. Even slight negligence can lead to product rework or even scrapping, causing significant time and economic losses.

[0004] Submarine cable junction boxes have a small cavity space, a compact internal component layout, and high cable laying costs. How to rationally splice, store, and route optical fibers within the cavity is an urgent problem to be solved for current submarine cable junction boxes. Summary of the Invention

[0005] This application provides an optical fiber termination assembly and an underwater optical cable splicing device to solve the problem in related technologies where submarine optical cable junction boxes use fusion splicing, and the quality of optical fiber fusion splicing depends more on the operator's construction skills.

[0006] In a first aspect, an optical fiber termination assembly is provided for installation in an underwater optical cable splicing device, comprising:

[0007] A fiber tray assembly, the fiber tray assembly including a fiber tray having two mounting areas distributed along its length;

[0008] An adapter fixing assembly is disposed in the mounting area and is used to mount the adapter; the adapter fixing assemblies in the two mounting areas are spaced apart along the width direction of the fiber tray.

[0009] In some embodiments, the adapter fixing component includes:

[0010] An adapter mounting bracket is installed in the mounting area;

[0011] An adapter mounting frame is detachably mounted on the adapter mounting bracket. The middle part of the adapter mounting frame is hollow and forms an adapter slot for mounting the adapter.

[0012] In some embodiments, at least one of the two side walls of the adapter fixing frame is screwed with a plurality of pins from top to bottom that are adapted to the fixing holes on the adapter flange of the adapter.

[0013] And / or, the top of the adapter fixing frame is provided with a first traction boss for inserting or removing the adapter fixing frame from the adapter fixing bracket;

[0014] And / or, the adapter slot is provided with an adapter positioning boss for abutting against the adapter flange of the adapter.

[0015] In some embodiments, the adapter fixing bracket is provided with a fixing frame fixing groove for fixing the adapter fixing frame;

[0016] The top of the two side walls of the fixing slot of the fixing frame is provided with adapter snap-fit ​​protrusions for snapping the adapter.

[0017] In some embodiments, the two side walls of the fixing frame fixing groove are further provided with fixing frame sliding grooves for the side walls of the adapter fixing frame to slide in and out in the vertical direction.

[0018] In some embodiments, the mounting area is detachably provided with a connector docking assembly for mounting a connector, and the adapter fixing assembly and the connector docking assembly are arranged at intervals along the width direction of the fiber optic reel.

[0019] In some embodiments, the connector parking assembly includes:

[0020] A berthing space fixing bracket is detachably mounted on the installation area;

[0021] A parking unit is detachably mounted on the parking position fixing bracket, and the parking unit is provided with a first positioning hole for parking the connector.

[0022] In some embodiments, the top of the parking unit is provided with a second traction boss for inserting or removing the parking unit from the parking position fixing bracket.

[0023] In some embodiments, the berth fixing bracket is provided with a berth fixing groove for fixing the berth unit;

[0024] The top of the two side walls of the berthing position fixing groove is provided with berthing position locking protrusions for locking the berthing unit.

[0025] In some embodiments, the two side walls of the berth fixing groove are also provided with berth sliding grooves for the side walls of the berth unit to slide in and out vertically.

[0026] In some embodiments, a parking slot is provided on the installation area, and the parking slot is provided with a first mounting hole; the connector parking assembly is located on the parking slot and is fixed to the first mounting hole by fasteners.

[0027] In some embodiments, the adapter fixing assembly on the mounting area and the connector docking assembly on another mounting area are arranged facing each other along the length of the fiber optic reel.

[0028] In some embodiments, a first fiber optic channel is formed between the adapter fixing assembly and the connector parking assembly in the mounting area.

[0029] In some embodiments, the mounting area is provided with an adapter fixing slot, and the adapter fixing slot is provided with a second mounting hole;

[0030] The adapter fixing assembly is located on the adapter fixing slot and is fixed to the second mounting hole by fasteners.

[0031] In some embodiments, the adapter fixing slot is further provided with a third positioning hole that matches the second positioning hole on the adapter fixing assembly.

[0032] In some embodiments, the fiber spool includes at least two fiber spool segments, and the at least two fiber spool segments are detachably connected by a connecting plate;

[0033] The fiber tray segment has one of the mounting areas.

[0034] In some embodiments, the fiber optic disc segment is provided with a third mounting hole, and the connecting plate is provided with a fourth mounting hole, the third mounting hole and the fourth mounting hole being connected by fasteners;

[0035] And / or, the fiber tray segment is provided with one of a fourth positioning hole and a positioning pin, and the connecting plate is provided with the other of a fourth positioning hole and a positioning pin.

[0036] In some embodiments, the fiber tray is provided with a plurality of first fiber blocking structures, which are arranged in a ring to form a ring-shaped second fiber channel.

[0037] In some embodiments, the installation area is further provided with several second fiber-blocking structures for temporarily coiling fibers or fixing bare fiber protection tubes.

[0038] Secondly, an underwater optical cable splicing device is provided, which includes the optical fiber termination component as described in any of the above.

[0039] The beneficial effects of the technical solution provided in this application include:

[0040] This application divides the fiber optic tray into two installation areas and sets up an adapter fixing component. The adapter fixing component can install the adapter. When performing fiber optic splicing, the connector pre-fabricated on the fiber can be directly connected to the adapter, thereby realizing rapid fiber optic splicing. Compared with the fusion splicing solution, it reduces the technical requirements of the operator for fiber optic splicing and improves the efficiency of fiber optic splicing. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments 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 these drawings without creative effort.

[0042] Figure 1 A plan view of the fiber tray assembly provided in an embodiment of this application;

[0043] Figure 2 A plan view of the fiber optic reel segment with the adapter fixing assembly and connector parking assembly installed, provided in an embodiment of this application;

[0044] Figure 3 A plan view of the fiber optic reel segment with the connector installed, provided in an embodiment of this application;

[0045] Figure 4 A perspective view of a fiber optic reel segment with an adapter fixing assembly and a connector parking assembly installed, provided in an embodiment of this application;

[0046] Figure 5 A cross-sectional view of a fiber optic reel segment with an adapter fixing assembly and a connector parking assembly installed, provided for an embodiment of this application;

[0047] Figure 6 An exploded view of the adapter fixing assembly provided in an embodiment of this application;

[0048] Figure 7 This is a schematic diagram of the adapter fixing bracket provided in an embodiment of this application;

[0049] Figure 8 This is a schematic diagram of the adapter fixing frame and the adapter provided in an embodiment of this application;

[0050] Figure 9 A schematic diagram of the connector parking assembly provided in an embodiment of this application;

[0051] Figure 10 This is a schematic diagram of a parking space fixing bracket provided in an embodiment of this application;

[0052] Figure 11 A schematic diagram of the parking unit provided in the embodiments of this application;

[0053] Figure 12 A perspective view of a fiber disc segment provided in an embodiment of this application;

[0054] Figure 13 This is a schematic diagram of a connection plate provided in an embodiment of this application;

[0055] Figure 14 This is a schematic diagram of a fiber optic termination assembly provided in an embodiment of this application;

[0056] Figure 15 This is a schematic diagram of another fiber routing path on the fiber optic termination assembly provided in the embodiments of this application.

[0057] In the diagram: 1. Fiber reel assembly; 2. Fiber reel; 3. Adapter fixing assembly; 4. Adapter; 5. Adapter fixing bracket; 6. Adapter fixing frame; 7. Adapter slot; 8. Adapter flange; 9. Fixing hole; 10. Pin; 11. First traction boss; 12. Adapter positioning boss; 13. Fixing frame fixing groove; 14. Adapter snap-fit ​​boss; 15. Fixing frame slide groove; 16. Connector; 17. Connector parking assembly; 18. Parking position fixing bracket; 19. Parking unit; 20. First positioning hole; 21. Second traction... 21. Boss; 22. Mooring position fixing groove; 23. Mooring position snap-fit ​​boss; 24. Mooring position sliding groove; 25. Mooring slot; 26. First mounting hole; 27. Adapter fixing slot; 28. Second mounting hole; 29. ​​Second positioning hole; 30. Third positioning hole; 31. Connecting plate; 32. Third mounting hole; 33. Fourth mounting hole; 34. Fourth positioning hole; 35. Positioning pin; 36. First fiber optic cable channel; 37. Fiber optic cable segment; 38. First fiber blocking structure; 39. Second fiber optic cable channel; 40. Second fiber blocking structure; 41. Optical fiber. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0059] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown in the illustration, this application provides an optical fiber termination assembly for installation in an underwater optical cable splicing device. This underwater optical cable splicing device can be a submarine cable junction box or other optical fiber splicing devices, which are not specifically limited in this application. The optical fiber termination assembly includes a fiber spool assembly 1 and an adapter fixing assembly 3. The fiber spool assembly 1 includes a fiber spool 2, which has two mounting areas distributed along its length. It is understood that for optical cable splicing, the fiber spool is typically a long and slender component. After the optical fibers of two optical cables are stripped, they are coiled and spliced ​​on the fiber spool 2. Therefore, the length direction of the fiber spool 2 is usually approximately consistent with the length extension direction of the optical cable.

[0060] The adapter fixing assembly 3 is located in the installation area and is used to install the adapter 4; the adapter fixing assemblies 3 in the two installation areas are distributed at intervals along the width direction of the fiber tray 2. It can be understood that since the adapter in the installation area needs to be connected to the fiber optic connector on the fiber tray 2 in the other installation area, the two installation areas are preferably set close to each other, for example, adjacent to each other.

[0061] This application divides the fiber tray 2 into two installation areas and sets up an adapter fixing component 3. The adapter fixing component 3 can install the adapter 4. When performing fiber splicing, the connector pre-made on the fiber can be directly connected to the adapter, thereby realizing the rapid splicing of the fiber. Compared with the fusion splicing solution, it reduces the construction skills required for the operator in fiber splicing and improves the efficiency of fiber splicing.

[0062] To achieve the installation and fixation of adapter 4, this application provides a specific solution, see [link to solution]. Figure 6 , Figure 7 and Figure 8 As shown, in some preferred embodiments, the adapter fixing assembly 3 includes an adapter fixing bracket 5 and an adapter fixing frame 6. The adapter fixing bracket 5 is installed on the installation area, and the adapter fixing frame 6 is detachably installed on the adapter fixing bracket 5. The middle part of the adapter fixing frame 6 is hollow and forms an adapter slot 7 for installing the adapter 4.

[0063] It is understandable that the adapter fixing frame 6 and the adapter fixing bracket 5 are connected in a detachable manner, which makes it easy to disassemble and install the adapter 4.

[0064] The number of adapters 4 that need to be installed in the adapter slot 7 of the adapter fixing frame 6 can be determined according to the actual communication needs. That is to say, one adapter 4 or multiple adapters 4 can be installed in the adapter slot 7. No specific limitation is made in this application.

[0065] For example, when installing multiple adapters 4, each adapter 4 can be stacked to make full use of the space in the height direction of the fiber tray 2, thereby enabling the connection and communication of multiple optical fibers.

[0066] It is understood that the number of adapter mounting frames 6 to be installed on the adapter mounting bracket 5 can be determined according to actual communication needs. That is to say, one adapter mounting frame 6 or multiple adapter mounting frames 6 can be installed on the adapter mounting bracket 5. No specific limitation is made in this application.

[0067] For example, when multiple adapter mounting frames 6 are installed, each adapter mounting frame 6 can be distributed along the width direction of the fiber tray 2, thereby making full use of the space in the width direction of the fiber tray 2, and thus realizing more fiber optic connections and communication.

[0068] See Figure 8 As shown, the adapter 4 has, but is not limited to, an arc-shaped outer shell surface and an adapter flange 8 located in the center. Multiple fixing holes 9 are provided on the adapter flange 8 along its circumference. Because the adapter fixing frame 6 has an adapter slot 7, the adapter fixing frame 6 forms two side walls. To limit the position of the adapter 4 on the adapter fixing frame 6, see [reference needed]. Figure 8 As shown, at least one of the two side walls of the adapter fixing frame 6 has several pins 10 screwed from top to bottom on it, which are adapted to the fixing holes 9 on the adapter flange 8 of the adapter 4; when the adapter 4 is placed in the adapter slot 7, the pins 10 are used to connect to the fixing holes 9 on the adapter flange 8 to fix the adapter 4 to the adapter fixing frame 6.

[0069] Since the adapter 4 is located between the two side walls of the adapter fixing frame 6, the two side walls of the adapter fixing frame 6 can cooperate to prevent the adapter 4 from moving along the width direction of the fiber tray 2, thereby achieving X-direction limiting.

[0070] To achieve a detachable connection for the adapter mounting frame 6, see [link / reference]. Figure 7 As shown, the adapter fixing bracket 5 is provided with a fixing frame fixing groove 13 for fixing the adapter fixing frame 6; it can be understood that multiple fixing frame fixing grooves 13 can be provided to realize the installation of multiple adapter fixing frames 6.

[0071] The top of the two side walls of the fixing slot 13 of the fixing frame is provided with adapter engaging bosses 14 for engaging the adapter 4. See also Figure 4As shown, when the adapter fixing frame 6 is inserted into the fixing slot 13 of the fixing frame, the outer surface of the outer shell of the topmost adapter 4 on the adapter fixing frame 6 abuts against the adapter snap-fit ​​protrusions 14 on the two side walls of the fixing slot 13 of the fixing frame. Under the action of the adapter snap-fit ​​protrusions 14, the adapter 4 can be prevented from moving along the thickness direction of the fiber tray 2, thereby achieving Z-direction limiting.

[0072] See Figure 6 and Figure 7 As shown, the two side walls of the fixing frame fixing groove 13 are also provided with fixing frame sliding grooves 15 for the side walls of the adapter fixing frame 6 to slide in and out vertically. See Figure 4 As shown, when the adapter fixing frame 6 is inserted into the fixing slot 13 of the fixing frame, the side wall of the adapter fixing frame 6 slides down into the fixing slot 15 of the fixing frame until the adapter fixing frame 6 is fully inserted. Under the action of the fixing slot 15, the adapter 4 can be prevented from moving along the length direction of the fiber tray 2, thereby achieving Y-direction limiting.

[0073] Understandably, see Figure 8 As shown, when installing multiple adapters 4, two adjacent adapters 4 can also be connected to the fixing holes 9 of the two adapters 4 by means of pins 10, so as to fix the multiple adapters 4 together and form an adapter unit.

[0074] See Figure 8 As shown, the top of the adapter fixing frame 6 is provided with a first traction boss 11 for inserting or pulling the adapter fixing frame 6 into or out of the adapter fixing bracket 5; the first traction boss 11 provides a force point for the pull-out action of the adapter fixing frame 6, and the adapter fixing frame 6 is inserted into the adapter fixing bracket 5 as a whole during assembly.

[0075] See Figure 8 As shown, the adapter slot 7 is provided with an adapter positioning boss 12 for abutting against the adapter flange 8 of the adapter 4. The adapter 4 or adapter unit is placed in the adapter fixing frame 6 and pre-positioned by the adapter positioning boss 12. Then, the adapter 4 or adapter unit can be fixed to the adapter fixing frame 6 by the pin 10.

[0076] It is understood that the optical fiber pulled out from one side of an installation area can be pre-installed on connector 16, forming a free connector 16, and then mated with a fixed connector 16 on adapter 4 in another installation area to terminate the two optical fibers. During transportation, to prevent the free connector 16 from being damaged due to bumps or other reasons, it can be temporarily fixed. Therefore, in some preferred embodiments, see... Figure 3 , Figure 4 , Figure 5 and Figure 9As shown, the installation area is detachably provided with a connector docking assembly 17 for installing the connector 16, and the adapter fixing assembly 3 and the connector docking assembly 17 are arranged at intervals along the width direction of the fiber optic reel 2.

[0077] Before termination, the free-state connector 16 can be temporarily installed on the connector docking assembly 17. When terminating, the connector docking assembly 17 is removed first, and then the free-state connector 16 on it is plugged into the adapter 4 to achieve the termination of the two optical fibers.

[0078] To achieve temporary installation of connector 16, this application provides a specific solution, see [link to solution]. Figure 9 , Figure 10 and Figure 11 As shown, in some preferred embodiments, the connector parking assembly 17 includes a parking position fixing bracket 18 and a parking unit 19. The parking position fixing bracket 18 is detachably disposed on the installation area, and the parking unit 19 is detachably mounted on the parking position fixing bracket 18. The parking unit 19 is provided with a first positioning hole 20 for parking the connector 16.

[0079] The number of the first positioning holes 20 of the aforementioned parking unit 19 can be determined according to actual communication needs. That is, one first positioning hole 20 can be set to install one connector 16, or multiple first positioning holes 20 can be set to install multiple connectors 16. No specific limitation is made in this application.

[0080] For example, see Figure 11 As shown, when multiple connectors 16 need to be installed, the first positioning holes 20 can be stacked and arranged, which can make full use of the space in the height direction of the fiber tray 2, thereby realizing the docking of multiple optical fibers.

[0081] It is understood that the number of berthing units 19 to be installed on the aforementioned berthing space fixing bracket 18 can be determined according to actual communication needs. That is to say, one berthing unit 19 or multiple berthing units 19 can be installed on the berthing space fixing bracket 18, and no specific limitation is made in this application.

[0082] For example, when multiple docking units 19 are installed, each docking unit 19 can be distributed along the width direction of the fiber tray 2, thereby making full use of the space in the width direction of the fiber tray 2 and thus achieving the docking of more optical fibers.

[0083] See Figure 11As shown, the top of the parking unit 19 is provided with a second traction boss 21 for inserting or removing the parking unit 19 from the parking position fixing bracket 18. The second traction boss 21 provides a force point for the pulling action of the parking unit 19, and the parking unit 19 is inserted into the parking position fixing bracket 18 as a whole during assembly.

[0084] To achieve a detachable connection of the parking unit 19, see [link to relevant documentation]. Figure 10 As shown, the berth fixing bracket 18 is provided with a berth fixing groove 22 for fixing the berth unit 19; it can be understood that multiple berth fixing grooves 22 can be provided to realize the installation of multiple berth units 19. The top of the two side walls of the berth fixing groove 22 is provided with berth locking protrusions 23 for locking the berth unit 19.

[0085] Since the connector 16 is installed in the first positioning hole 20, it can prevent the connector 16 from moving along the width direction of the fiber tray 2, thereby achieving X-direction limiting.

[0086] See Figure 9 and Figure 10 As shown, when the parking unit 19 is inserted into the parking position fixing groove 22, the parking unit 19 abuts against the parking position locking bosses 23 on the two side walls of the parking position fixing groove 22. Under the action of the parking position locking bosses 23, the parking unit 19 can be prevented from moving along the thickness direction of the fiber tray 2, thereby achieving Z-direction limiting.

[0087] See Figure 10 As shown, the two side walls of the berthing position fixing groove 22 are also provided with berthing position sliding grooves 24 for the side walls of the berthing unit 19 to slide in and out vertically. When the berthing unit 19 is inserted into the berthing position fixing groove 22, the side walls of the berthing unit 19 slide downwards in the berthing position sliding grooves 24 until the berthing unit 19 is fully inserted. Under the action of the berthing position sliding grooves 24, the berthing unit 19 can be prevented from moving along the length direction of the fiber tray 2, thereby achieving Y-direction limiting.

[0088] In some preferred embodiments, see Figure 12 As shown, a parking slot 25 is provided on the installation area, and the parking slot 25 is provided with a first mounting hole 26; the connector parking assembly 17 is located on the parking slot 25 and is fixed to the first mounting hole 26 by fasteners. The fasteners can be common connecting parts, such as screws or bolts.

[0089] To facilitate connection and optimize fiber routing, as a preferred example, the adapter fixing assembly 3 on the installation area and the connector docking assembly 17 on another installation area are arranged facing each other along the length of the fiber reel 2. See the view after termination. Figure 14 As shown.

[0090] See Figure 1 , Figure 14 As shown, a first fiber optic channel 36 is formed between the adapter fixing assembly 3 and the connector docking assembly 17 in the installation area.

[0091] In some preferred embodiments, see Figure 12 As shown, an adapter fixing slot 27 is provided on the installation area, and the adapter fixing slot 27 is provided with a second mounting hole 28; the adapter fixing component 3 is located on the adapter fixing slot 27 and is fixed to the second mounting hole 28 by fasteners. The fasteners can be common connecting parts, such as screws and bolts.

[0092] See Figure 7 and Figure 12 As shown, the adapter fixing slot 27 is also provided with a third positioning hole 30 that matches the second positioning hole 29 on the adapter fixing assembly 3. After the second positioning hole 29 and the third positioning hole 30 are used with the fastener for initial positioning, they are tightened. In fact, both the second mounting hole 28 and the third positioning hole 30 can be used for positioning and / or installation and tightening.

[0093] In this application, the fiber tray 2 can be a single, continuous plate or segmented pieces. For example, see [link to example]. Figure 1 and Figure 2 As shown, the fiber spool 2 includes at least two fiber spool segments 37, which are detachably connected by a connecting plate 31; each fiber spool segment 37 has an installation area.

[0094] The two fiber optic reel segments 37 are essentially identical. After the connector docking assembly 17 and the adapter fixing assembly 3 are installed, the two fiber optic reel segments 37 become a centrally symmetrical structure.

[0095] The advantage of using this segmented fiber optic tray 2 is that the two fiber optic trays 2 and the two optical cables that need to be spliced ​​can be pre-assembled in the land-based factory. The stripped optical fiber 41 can be pre-connected to the connector 16 in the land-based factory. A part of the connector 16 can be pre-installed on the adapter in the land-based factory, and the other part of the connector 16 can be placed on the connector mooring assembly 17 for later use. This can reduce the number of offshore / water construction steps, thereby reducing offshore construction time and costs.

[0096] See Figure 12 and Figure 13As shown, the fiber reel segment 37 is provided with a third mounting hole 32, and the connecting plate 31 is provided with a fourth mounting hole 33. The third mounting hole 32 and the fourth mounting hole 33 are connected by fasteners. Connecting holes are provided on the fiber reel segment 37 and the connecting plate 31, and fasteners are used for fixing, thereby realizing the assembly between the fiber reel segments 37. The fasteners can be common connecting parts, such as screws and bolts.

[0097] See Figure 12 and Figure 13 As shown, the fiber tray segment 37 is provided with one of the fourth positioning hole 34 and the positioning pin 35, and the connecting plate 31 is provided with the other of the fourth positioning hole 34 and the positioning pin 35. The cooperation of the fourth positioning hole 34 and the positioning pin 35 can realize the initial positioning of the fiber tray segment 37 and the connecting plate 31, which facilitates subsequent assembly.

[0098] See Figure 14 and Figure 15 As shown, the fiber tray 2 is provided with multiple first fiber blocking structures 38, which are arranged in a ring to form a ring-shaped second fiber channel 39. In addition, the installation area is also provided with several second fiber blocking structures 40 for temporary fiber coiling. These second fiber blocking structures 40 can also be used to fix bare fiber protection tubes as needed during construction.

[0099] See Figure 3 As shown, before docking, the adapter fixing assembly 3 and the connector docking assembly 17 are arranged side by side, the connector 16 is installed on them in sequence, and the optical fiber 41 is coiled on the first fiber-blocking structure 38 and the second fiber-blocking structure 40.

[0100] See Figure 14 and Figure 15 As shown, after the two fiber optic segments 37 are connected, the connector docking assembly 17 is removed as a whole, and then the connectors 16 on the connector docking assembly 17 are inserted into the adapter 4 to achieve termination.

[0101] For ease of understanding, see Figure 14 and Figure 15 As shown, the connector on the upper side of the left fiber tray segment 37 is labeled A, and the connector on the lower side is labeled C. The connector on the upper side of the right fiber tray segment 37 is labeled B, and the connector on the lower side is labeled D. The corresponding connectors are indicated next to "A", "B", "C" and "D" in the figure.

[0102] See Figure 14 As shown, D connects to C via its adapter 4. The optical fiber 41 on D is coiled in a racetrack shape, first coiling to the right, then upward, then to the left, then downward, and then to the right again, thus coiling twice on the second fiber channel 39.

[0103] See Figure 15 As shown, B connects to A on adapter 4 via adapter 4. The fiber optic cable 41 on B is coiled in a figure-eight pattern, first coiling to the right, then coiling downwards, and then coiling to the left, thus coiling the first loop on the second fiber channel 39. The second loop goes through the middle first fiber channel 36 to the opposite fiber segment 37, then reverses direction and returns to its own fiber segment 37.

[0104] By using the first fiber optic channel 36 in the middle, the length of the pre-reserved fiber in the connectors of the two docking modules is guaranteed to be the same, eliminating the distinction between male and female connectors. In actual use, any two docking modules can be used to complete the docking.

[0105] The above-mentioned reasonable fiber routing path ensures that the two winding methods require the same length of optical fiber, thus guaranteeing normal plugging while allowing the two docking modules to be connected without distinguishing between male and female connectors.

[0106] This application also provides an underwater optical cable splicing device, which includes the optical fiber termination component provided in the above embodiments.

[0107] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0108] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," 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 limitations, 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 said element.

[0109] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An optical fiber termination assembly, characterized in that, It is used for installation in underwater optical cable splicing devices, and includes: Fiber tray assembly (1), the fiber tray assembly (1) includes a fiber tray (2), the fiber tray (2) having two mounting areas distributed along its length; An adapter fixing assembly (3) is provided in the mounting area and is used to install the adapter (4); the adapter fixing assemblies (3) in the two mounting areas are spaced apart along the width direction of the fiber tray (2); The installation area is detachably provided with a connector docking assembly (17) for installing a connector (16). The adapter fixing assembly (3) and the connector docking assembly (17) are arranged at intervals along the width direction of the fiber tray (2). A first fiber tray channel (36) is formed between the adapter fixing assembly (3) and the connector docking assembly (17) in the installation area. The fiber tray (2) includes at least two fiber tray segments (37), which are detachably connected by a connecting plate (31); each fiber tray segment (37) has a mounting area. The fiber tray (2) is provided with a plurality of first fiber blocking structures (38), and the plurality of first fiber blocking structures (38) are arranged to form a ring, so that the plurality of first fiber blocking structures (38) form a ring-shaped second fiber channel (39).

2. The fiber optic termination assembly as described in claim 1, characterized in that, The adapter fixing component (3) includes: An adapter mounting bracket (5) is installed in the mounting area; The adapter fixing frame (6) is detachably mounted on the adapter fixing bracket (5). The middle part of the adapter fixing frame (6) is hollow and forms an adapter slot (7) for mounting the adapter (4).

3. The fiber optic termination assembly as described in claim 2, characterized in that: On at least one of the two side walls of the adapter fixing frame (6), a plurality of pins (10) adapted to the fixing holes (9) on the adapter flange (8) of the adapter (4) are screwed from top to bottom. And / or, the top of the adapter fixing frame (6) is provided with a first traction boss (11) for inserting or removing the adapter fixing frame (6) from the adapter fixing bracket (5). And / or, the adapter slot (7) is provided with an adapter positioning boss (12) for abutting against the adapter flange (8) of the adapter (4).

4. The fiber optic termination assembly as described in claim 2, characterized in that: The adapter fixing bracket (5) is provided with a fixing frame fixing groove (13) for fixing the adapter fixing frame (6); The top of the two side walls of the fixing slot (13) of the fixing frame is provided with adapter snap-fit ​​bosses (14) for snapping the adapter (4).

5. The fiber optic termination assembly as described in claim 4, characterized in that: The two side walls of the fixed frame fixing groove (13) are also provided with a fixed frame sliding groove (15) for the side wall of the adapter fixing frame (6) to slide in and out in the vertical direction.

6. The fiber optic termination assembly as described in claim 1, characterized in that, The connector parking assembly (17) includes: A parking space fixing bracket (18) is detachably mounted on the installation area; A parking unit (19) is detachably mounted on the parking position fixing bracket (18), and the parking unit (19) is provided with a first positioning hole (20) for parking the connector (16).

7. The fiber optic termination assembly as described in claim 6, characterized in that: The top of the parking unit (19) is provided with a second traction boss (21) for inserting or removing the parking unit (19) from the parking position fixing bracket (18).

8. The fiber optic termination assembly as described in claim 6, characterized in that: The berthing position fixing bracket (18) is provided with a berthing position fixing groove (22) for fixing the berthing unit (19); The top of the two side walls of the berthing position fixing groove (22) is provided with berthing position locking bosses (23) for locking the berthing unit (19).

9. The fiber optic termination assembly as described in claim 8, characterized in that: The two side walls of the berthing position fixing groove (22) are also provided with berthing position sliding grooves (24) for the side walls of the berthing unit (19) to slide in and out vertically.

10. The fiber optic termination assembly as described in claim 1, characterized in that: The installation area is provided with a parking slot (25), and the parking slot (25) is provided with a first mounting hole (26); the connector parking assembly (17) is located on the parking slot (25) and is fixed to the first mounting hole (26) by fasteners.

11. The fiber optic termination assembly as described in claim 1, characterized in that: The adapter fixing assembly (3) on the installation area and the connector parking assembly (17) on another installation area are arranged facing each other along the length of the fiber tray (2).

12. The fiber optic termination assembly as described in claim 1, characterized in that: An adapter fixing slot (27) is provided on the installation area, and a second mounting hole (28) is provided on the adapter fixing slot (27). The adapter fixing component (3) is located on the adapter fixing slot (27) and is fixed to the second mounting hole (28) by fasteners.

13. The fiber optic termination assembly as described in claim 12, characterized in that: The adapter fixing slot (27) is also provided with a third positioning hole (30) that is adapted to the second positioning hole (29) on the adapter fixing assembly (3).

14. The fiber optic termination assembly as described in claim 1, characterized in that: The fiber tray segment (37) is provided with a third mounting hole (32), and the connecting plate (31) is provided with a fourth mounting hole (33). The third mounting hole (32) and the fourth mounting hole (33) are connected by fasteners. And / or, the fiber tray segment (37) is provided with one of the fourth positioning hole (34) and the positioning pin (35), and the connecting plate (31) is provided with the other of the fourth positioning hole (34) and the positioning pin (35).

15. The fiber optic termination assembly as described in claim 1, characterized in that: The installation area is also provided with several second fiber-blocking structures (40) for temporary fiber coiling or fixing of bare fiber protection tubes.

16. An underwater optical cable splicing device, characterized in that: It includes the fiber optic termination assembly as described in any one of claims 1 to 15.

Images