Optical fiber distribution box, cabinet, and data center

Abstract

Embodiments of the present application provide an optical fiber distribution box, a cabinet, and a data center, aiming to reduce the size of an optical cable. The optical fiber distribution box provided in the embodiments of the present application comprises a box body, connectors, at least one circulator, first optical fibers, second optical fibers, and third optical fibers, the box body defines an accommodating cavity, the connectors are arranged on the box body, the connectors are configured to be connected to a communication device located outside the box body, the circulator is arranged in the accommodating cavity, the first optical fibers are connected to the circulator and an optical cable located in the box body, and the optical cable comprises a plurality of transmission optical fibers; and the second optical fibers and the third optical fibers are connected to the circulator and the connectors. An optical signal transmitted by the communication device to the optical cable via the second optical fibers and an optical signal transmitted by the optical cable to the communication device via the third optical fibers are transmitted by means of the same transmission optical fiber via the first optical fiber; and when the number of the communication devices is certain, the optical signals input and output by the communication devices can be transmitted by means of one transmission optical fiber, thereby reducing the number of transmission optical fibers in the optical cable and reducing the size of the optical cable.

Description

Optical fiber distribution box, cabinet and data center

[0001] The present application claims priority to the Chinese patent application No. 202411231677.6, filed on September 3, 2024, and entitled "Optical fiber distribution box, cabinet and data center", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] Embodiments of the present application relate to the field of optical communication technology, in particular to an optical fiber distribution box, a cabinet and a data center. BACKGROUND

[0003] The optical fiber distribution box includes an optical cable and a plurality of connectors. The optical cable is connected to a communication device through the connectors. The optical cable includes a plurality of transmission optical fibers for transmitting optical signals to the communication device and a plurality of transmission optical fibers for transmitting optical signals from the communication device to the optical cable. Each communication device needs to be connected to two transmission optical fibers. The number of transmission optical fibers in the optical cable is large, and the size of the optical cable is large. SUMMARY

[0004] Embodiments of the present application provide an optical fiber distribution box, a cabinet and a data center, which aims to reduce the size of the optical cable.

[0005] To achieve the above-mentioned purpose, embodiments of the present application adopt the following technical solutions:

[0006] In one aspect, the present application provides an optical fiber distribution box, which includes a box body, a connector, at least one circulator, a first optical fiber, a second optical fiber and a third optical fiber. The box body encloses a cavity. The connector is arranged in the box body and is used to connect a communication device outside the box body. The circulator is arranged in the cavity. The first optical fiber connects the circulator and an optical cable in the box body. The second optical fiber and the third optical fiber both connect the circulator and the connector. The second optical fiber is used to transmit optical signals from the connector to the circulator. The first optical fiber is used to transmit optical signals from the second optical fiber to the optical cable. The first optical fiber is also used to transmit optical signals from the optical cable to the circulator. The third optical fiber is used to transmit optical signals from the first optical fiber to the connector.

[0007] The optical cable includes a plurality of transmission optical fibers. The optical fiber distribution box provided by the embodiments of the present application can make the optical signals transmitted from the communication device to the optical cable through the second optical fiber and the optical signals transmitted from the optical cable to the communication device through the third optical fiber both be transmitted through the same transmission optical fiber in the optical cable via the first optical fiber. When the number of communication devices is constant, the input and output optical signals of the communication devices can be transmitted through one transmission optical fiber, which reduces the number of transmission optical fibers in the optical cable and reduces the size of the optical cable. Conversely, when the number of transmission optical fibers in the optical cable is constant, the number of communication devices that can be connected by the optical cable is increased, and the transmission capacity of the optical cable is improved.

[0008] In some embodiments, the connectors include a plurality of first connectors, the circulators include at least one first circulator, and the same first circulator is connected with two first connectors, wherein one first connector is connected with one first circulator through a second optical fiber, and the other first connector is connected with the same first circulator through a third optical fiber.

[0009] Through the above arrangement, the communication device is connected with the first circulator through two first connectors, so that the optical signal transmitted from the communication device to the optical cable through the second optical fiber and the optical signal transmitted from the optical cable to the communication device through the third optical fiber are both transmitted through the same transmission optical fiber in the optical cable through the first optical fiber, and when the number of communication devices is certain, the optical signals input and output by the communication devices can be transmitted through one transmission optical fiber, thereby reducing the number of transmission optical fibers in the optical cable and reducing the size of the optical cable.

[0010] In other embodiments, the connectors include a plurality of first connectors, the circulators include at least one second circulator, and the same second circulator is connected with a plurality of first connectors, wherein a plurality of first connectors are connected with one second circulator through a plurality of second optical fibers, and the remaining first connectors are connected with the same second circulator through a plurality of third optical fibers.

[0011] Through the above arrangement, one second circulator can be connected with a plurality of first connectors through a plurality of second optical fibers and a plurality of third optical fibers, thereby reducing the arrangement of the circulator and reducing the material cost of the fiber distribution box.

[0012] In some embodiments, the connectors can also include a plurality of first connectors and at least one second connector at the same time, the circulators include at least one third circulator, the first connectors and the second connectors are both connected with the same third circulator, the second optical fibers and the third optical fibers both include a plurality of, a plurality of first connectors are connected with the third circulator through a plurality of second optical fibers, the remaining first connectors are connected with the third circulator through a plurality of third optical fibers, the second connectors are connected with the third circulator through the remaining second optical fibers and the remaining third optical fibers, and the second optical fibers and the third optical fibers connected with the second connectors and the third circulator are arranged in parallel.

[0013] Through the above arrangement, the third circulator in the fiber distribution box can be connected with the first connectors and the second connectors at the same time, thereby increasing the types of connectors in the fiber distribution box and improving the adaptability of the fiber distribution box.

[0014] In other embodiments, the connectors can only include second connectors, the circulators include a fourth circulator, the second connectors are connected with the fourth circulator through second optical fibers and third optical fibers, and the second optical fibers and the third optical fibers connected with the second connectors and the fourth circulator are arranged in parallel.

[0015] Through the above arrangement, the communication device is connected with the fourth circulator through the second connector, so that the optical signal transmitted by the communication device to the optical cable through the second optical fiber and the optical signal transmitted by the optical cable to the communication device through the third optical fiber are both transmitted through the first optical fiber through the same transmission optical fiber in the optical cable. When the number of communication devices is certain, the optical signals input and output by the communication devices can be transmitted through one transmission optical fiber, thereby reducing the number of transmission optical fibers in the optical cable and reducing the size of the optical cable. Compared with the embodiment in which the fiber distribution box only includes the first connector, the second connector can be connected with the second optical fiber and the third optical fiber at the same time, thereby reducing the number of connectors arranged in the fiber distribution box and simplifying the structure of the fiber distribution box.

[0016] In some embodiments, the connector includes a shell, and the shells of at least two connectors connected with the same circulator are connected with each other; the mechanical strength of the connector can be improved.

[0017] In some embodiments, a plurality of first optical fibers are provided, the plurality of first optical fibers are connected with the circulator, and the plurality of first optical fibers are arranged in parallel; the arrangement of the plurality of first optical fibers inside the cavity can be arranged.

[0018] In some embodiments, the fiber distribution box further includes a first branching structure arranged in the cavity, the optical cable located in the cavity is branched into a plurality of transmission optical fibers through the first branching structure, and one of the plurality of transmission optical fibers is connected with the first optical fiber; the plurality of transmission optical fibers in the optical cable can be split, and the split transmission optical fibers are convenient for connection with the connector.

[0019] In some embodiments, the fiber distribution box further includes a first branching structure and a second branching structure arranged in the cavity, the optical cable located in the cavity is branched into a plurality of transmission optical fiber groups through the first branching structure, each transmission optical fiber group is branched into a plurality of transmission optical fibers through the second branching structure, and the transmission optical fibers are connected with the first optical fibers.

[0020] Through the above arrangement, the first branching structure and the second branching structure can realize step-by-step splitting of the plurality of transmission optical fibers in the optical cable, and are suitable for the case that the number of transmission optical fibers in the optical cable is too large.

[0021] In some embodiments, the transmission optical fiber is fusion spliced with the first optical fiber; through the above arrangement, the reflection of the transmission optical fiber and the first optical fiber at the connection position of the transmission optical fiber and the first optical fiber is reduced, and the loss of the optical signal in the transmission process is avoided.

[0022] In some embodiments, the first optical fiber includes a plurality of first optical fibers, and the optical cable includes a plurality of transmission optical fibers; the fiber distribution box further includes an optical cross device arranged in the cavity, the transmission optical fibers are connected with at least part of the first optical fibers through the optical cross device, and the optical cross device is used for selecting the corresponding connection of a certain transmission optical fiber and a certain first optical fiber, so as to realize the flexible scheduling of the transmission of the optical signal between the plurality of transmission optical fibers and the plurality of first optical fibers.

[0023] In another aspect, the embodiments of the present application also provide a cabinet, which comprises at least one optical fiber distribution box as described above and a cabinet body, and the optical fiber distribution box is arranged in the cabinet body.

[0024] In yet another aspect, the embodiments of the present application also provide a data center, which comprises a plurality of cabinets as described above and a switch, and the optical fiber distribution boxes in the cabinets are connected with the switch.

[0025] It can be understood that the cabinet and the data center provided by the above embodiments of the present application can achieve the beneficial effects as described above with reference to the beneficial effects of the optical fiber distribution box, which will not be described herein again. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 is a structural schematic diagram of a data center in the embodiments of the present application;

[0027] Fig. 2 is a structural schematic diagram of an optical fiber distribution box in the embodiments of the present application;

[0028] Fig. 3 is a structural schematic diagram of an optical fiber distribution box in the embodiments of the present application;

[0029] Fig. 4 is a structural schematic diagram of an optical fiber distribution box in the embodiments of the present application;

[0030] Fig. 5 is a structural schematic diagram of an optical fiber distribution box in the embodiments of the present application.

[0031] Reference signs: 100, data center; 20, computer room; 10, cabinet; 30, optical cable; 31, transmission optical fiber group; 1, optical fiber distribution box; 11, box body; 12, connector; 121, first connector; 122, second connector; 13, optical fiber; 141, first distribution structure; 142, second distribution structure; 15, circulator; 151, first circulator; 152, second circulator; 153, third circulator; 154, fourth circulator; 161, first optical fiber; 162, second optical fiber; 163, third optical fiber; 17, optical cross device. DETAILED DESCRIPTION

[0032] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0033] Hereinafter, the terms "first", "second", and the like are used only for descriptive purposes, and cannot be construed as indicating or implying relative importance or implying an indicated number of technical features. Therefore, the features defined with "first", "second", and the like can explicitly or implicitly include one or more of the features.

[0034] In addition, in the embodiments of the present application, the orientation terms such as "upper", "lower", "left", "right", "horizontal" and "vertical" are defined with respect to the orientation of the components shown in the drawings. It should be understood that these directional terms are relative concepts, which are used for description and clarification, and can be changed accordingly according to the change of the orientation of the components placed in the drawings.

[0035] In the embodiments of the present application, unless otherwise explicitly specified and limited, the term "connection" should be understood broadly, for example, "connection" can be fixed connection, or detachable connection, or integral; can be directly connected, or indirectly connected through intermediate medium.

[0036] It should be noted that in the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "connected" and "connected" should be understood broadly, for example, it can be fixed connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or communication inside two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0037] Referring to FIG. 1, the embodiments of the present application provide a data center 100 for transmitting, accelerating, displaying, calculating and storing data information on network infrastructure. The data center 100 includes a machine room 20 and a plurality of cabinets 10 arranged in the machine room 20. The cabinet 10 includes a cabinet body and electronic equipment arranged inside the cabinet body, which can include a fiber distribution box 1, a server, etc. The data center 100 can also include a switch, which can also be arranged in the cabinet 10; the fiber distribution box 1 in the cabinet 10 is connected with the switch, and can also be connected with a communication device to realize information transmission between the communication devices; the fiber distribution box 1 and the switch can be connected through an optical cable 30. For example, the communication device can include an optical module, which is an optoelectronic device for optical-electric and electric-optical conversion in the information communications technology (ICT) industry, and is a core device for optical communication. The embodiments of the present application do not specially limit the specific form of the above optical module.

[0038] In the above embodiment, the fiber distribution box 1 can be connected with multiple optical modules, and the connection between the fiber distribution box 1 and the switch can realize information transmission between any two optical modules. For example, two optical modules for information transmission can be connected with the same fiber distribution box 1, or can be connected with two different fiber distribution boxes 1 respectively, and the two fiber distribution boxes 1 can be located in the same cabinet 10 or can be located in two cabinets 10 respectively.

[0039] Referring to FIG. 2, in the above embodiment, any one of the server, the switch and the optical module can be connected with the fiber distribution box 1 through the optical cable 30. The fiber distribution box 1 provided in the embodiment of the present application can include a box body 11 and a connector 12, and the box body 11 encloses a cavity. The box body 11 is provided with a connection panel on one side, and the connector 12 is arranged on the connection panel. The connector 12 at one end outside the cavity is used to connect other communication devices, and the connector 12 at one end inside the cavity is connected with one end of the optical cable 30 inside the cavity.

[0040] It can be understood that the optical cable 30 is covered by a plurality of transmission optical fibers 13 through a protection structure, and in some embodiments, the fiber distribution box 1 can include a first distribution structure 141. The optical cable 30 inside the cavity is divided into a plurality of transmission optical fibers 13 through the first distribution structure 141, and the split transmission optical fibers 13 are convenient for connection with the connector 12. For example, the first distribution structure 141 can include a main channel and a plurality of sub-channels, and the plurality of sub-channels are in communication with the main channel. In the process of dividing the optical cable 30 into a plurality of transmission optical fibers 13, the optical cable 30 is inserted into the main channel, and then each transmission optical fiber 13 in the optical cable 30 is stretched out from a sub-channel to realize the splitting of the plurality of transmission optical fibers 13 in the optical cable 30. In the above embodiment, in order to reduce the size of the first distribution structure 141, the main channel and the sub-channels of the first distribution structure 141 can be bent to reduce the volume occupied by the first distribution structure 141 in the cavity.

[0041] Referring to FIG. 3, in some other embodiments, the fiber distribution box 1 can include a first distribution structure 141 and a second distribution structure 142, and the optical cable 30 located in the cavity is divided into a plurality of transmission fiber groups 31 via the first distribution structure 141, and each of the transmission fiber groups 31 is divided into a plurality of transmission fibers 13 via the second distribution structure 142. As in the above embodiments, the first distribution structure 141 can include a main channel and a plurality of sub-channels, and the plurality of sub-channels are in communication with the main channel; and the second distribution structure 142 can be the same as the first distribution structure 141, which is not described herein. In the process of dividing the optical cable 30 into a plurality of transmission fibers 13, the optical cable 30 is inserted into the main channel of the first distribution structure 141, and then the optical cable 30 is divided into a plurality of transmission fiber groups 31, each of which corresponds to being extended from a sub-channel of the first distribution structure 141, and then one of the transmission fiber groups 31 is inserted into the main channel of the second distribution structure 142, and each of the transmission fibers 13 in the transmission fiber group 31 is extended from a sub-channel of the second distribution structure 142, so as to achieve step-by-step division of the plurality of transmission fibers 13 in the optical cable 30, which is suitable for the case where the number of transmission fibers 13 in the optical cable 30 is too large.

[0042] Referring to FIGS. 2 and 3, in some embodiments, the fiber distribution box 1 further includes at least one optical circulator 15, a first optical fiber 161, a second optical fiber 162, and a third optical fiber 163, wherein the optical circulator 15 is used to connect the optical cable 30 and is used to connect the connector 12. For example, the first optical fiber 161 connects the optical circulator 15 and the optical cable 30 located in the box body 11, and the second optical fiber 162 and the third optical fiber 163 both connect the optical circulator 15 and the connector 12. The second optical fiber 162 is used to transmit the optical signal from the connector 12 to the optical circulator 15, and the first optical fiber 161 is used to transmit the optical signal from the second optical fiber 162 to the optical cable 30; the first optical fiber 161 is also used to transmit the optical signal from the optical cable 30 to the optical circulator 15, and the third optical fiber 163 is used to transmit the optical signal from the first optical fiber 161 to the connector 12.

[0043] The optical cable 30 includes a plurality of transmission fibers 13, and the first optical fiber 161 can be connected to one of the transmission fibers 13, and the connection mode can include fusion splicing, so as to reduce the reflection of the optical signal at the connection, thereby avoiding increasing the loss of the optical signal in the transmission process.

[0044] In the above embodiment, the circulator 15 can include a polarization filter, a Faraday rotator, and the like, so that the optical signal transmitted to the circulator 15 through the second optical fiber 162 connected to the connector 12 is transmitted to the transmission optical fiber 13 in the optical cable 30 through the first optical fiber 161, and the optical signal transmitted to the circulator 15 through the first optical fiber 161 is transmitted to the connector 12 connected to the third optical fiber 163 through the third optical fiber 163. The optical signal transmitted to the optical cable 30 by the communication device through the second optical fiber 162 and the optical signal transmitted to the communication device by the optical cable 30 through the third optical fiber 163 are both transmitted through the same transmission optical fiber 13 in the optical cable 30 through the first optical fiber 161, and the optical signal input and output by the communication device can be transmitted through one transmission optical fiber 13 when the number of communication devices is certain, reducing the number of transmission optical fibers 13 in the optical cable 30 and reducing the size of the optical cable 30. Conversely, when the number of transmission optical fibers 13 in the optical cable 30 is certain, the number of communication devices that can be connected to the optical cable 30 is increased, and the transmission capacity of the optical cable 30 is improved.

[0045] In the above embodiment, the connector 12 is an optical fiber connector, which can be divided into LC, FC, SC, MPO, and the like according to the structure. Among them, LC, FC, and SC are single-core connectors (the port of a single-core connector can only connect one optical fiber), and MPO is a multi-core connector (the port of a multi-core connector can connect multiple optical fibers, such as 12, 24, etc.). Among them, the single-core connector or the multi-core connector each includes a shell. The connector can be connected to a circulator 15 through one optical fiber or several optical fibers, and in some embodiments, the same circulator 15 can be connected to at least two connectors at the same time, and the at least two connectors 12 connected to the same circulator 15 can be independently arranged, or the shells of the at least two connectors can be connected to each other to form an integrated structure. For example, in the embodiment of the LC connector, the two LC connectors connected to the same circulator 15 are independently arranged, or the shells of the two LC connectors are connected to form an integrated LC connector; compared with the independent arrangement of the LC connector, the mechanical strength of the connector 15 is improved. It should be understood that the shells of more than two LC connectors can also be connected to form an integrated LC connector, which is not limited in the present application.

[0046] Referring to FIG. 4, in some embodiments, the circulator 15 can include at least one first circulator 151, which can be a single-path circulator, and each single-path circulator can be connected with one first optical fiber 161, one second optical fiber 162 and one third optical fiber 163. The connector 12 includes a first connector 121, which is a single-core connector as described above, and the first connector 121 can be connected with the second optical fiber 162 or the third optical fiber 163. Among them, the first connector 121 can be provided in plurality; for example, the same first circulator 151 is connected with two first connectors 121, one first connector 121 is connected with the second optical fiber 162 on the first circulator 151, and the other first connector 121 is connected with the third optical fiber 163 on the same first circulator 151. It can be understood that the optical signal transmitted by one first connector 121 through the second optical fiber 162 is transmitted to the optical cable 30 through the first optical fiber 161, and the optical signal transmitted by the optical cable 30 through the first optical fiber 161 is transmitted to the other first connector 121 through the third optical fiber 163. Through the above arrangement, the fiber distribution box can enable the communication device to be connected with the first circulator 151 through two first connectors 121, and the optical signal transmitted by the communication device to the optical cable 30 through the second optical fiber 162 and the optical signal transmitted by the optical cable 30 to the communication device through the third optical fiber 163 are both transmitted through the first optical fiber 161 through the same transmission optical fiber 13 in the optical cable 30, and when the number of communication devices is certain, the optical signals input and output by the communication devices can be transmitted through one transmission optical fiber 13, thereby reducing the number of transmission optical fibers 13 in the optical cable 30 and reducing the size of the optical cable 30.

[0047] In other embodiments, the circulator 15 can include at least one second circulator 152, which can be a multi-path circulator, and the multi-path circulator can be connected with a plurality of first connectors 121, and each multi-path circulator can be connected with a plurality of first optical fibers 161, a plurality of second optical fibers 162 and a plurality of third optical fibers 163, wherein each first optical fiber 161, second optical fiber 162 and third optical fiber 163 are correspondingly connected to form a group of connected optical fibers, and in each group of connected optical fibers, the optical signal input through a second optical fiber 162 can be output from a corresponding first optical fiber 161, and the optical signal input through a first optical fiber 161 can be output from a corresponding third optical fiber 163; and each group of connected optical fibers is relatively independent and does not interfere with each other. The multi-path circulator can enable a plurality of first optical fibers 161, a plurality of second optical fibers 162 and a plurality of third optical fibers 163 to share the devices (such as polarization filters, Faraday rotators, etc.) in the circulator 15, thereby reducing the material cost and assembly cost of the circulator 15.

[0048] For example, one second circulator 152 can be connected with multiple first connectors 121, in which some first connectors 121 are connected with the second circulator 152 through second optical fibers 162, and the rest of the first connectors 121 are connected with the same second circulator 152 through third optical fibers 163. In this way, one second circulator 152 can be connected with multiple first connectors 121 through multiple second optical fibers 162 and multiple third optical fibers 163, which reduces the number of circulators 15 and lowers the material cost of the fiber distribution box 1.

[0049] In the above embodiment, the second circulator 152 can be connected with multiple first connectors 121, and the multiple first optical fibers 161 connected with the multiple-circulator can be arranged in parallel. The parallel arrangement can be understood as that the multiple first optical fibers 161 are packaged in the same protective structure, for example, the multiple first optical fibers 161 are wound together by an insulation layer. In this way, the arrangement of the first optical fibers 161 in the cavity can be arranged.

[0050] In the embodiment in which the connector 12 includes multiple first connectors 121, the connector 12 can further include at least one second connector 122, which is a multi-core connector as described above. Due to the characteristics of the multi-core connector, the second connector 122 can be connected with the second optical fiber 162 and the third optical fiber 163 at the same time. The circulator 15 can include at least one third circulator 153, which can also be a multi-circulator. The first connector 121 and the second connector 122 are both connected with the same third circulator 153. The second optical fiber 162 and the third optical fiber 163 both include multiple optical fibers, in which some first connectors 121 are connected with the third circulator 153 through some second optical fibers 162, and the rest of the first connectors 121 are connected with the third circulator 153 through some third optical fibers 163. The second connector 122 is connected with the third circulator 153 through the rest of the second optical fibers 162 and the rest of the third optical fibers 163 (i.e., the multiple second optical fibers 162 include both the second optical fibers 162 connected with the first connector 121 and the second optical fibers 162 connected with the second connector 122; the multiple third optical fibers 163 include both the third optical fibers 163 connected with the first connector 121 and the third optical fibers 163 connected with the second connector 122). The second optical fibers 162 and the third optical fibers 163 connected with the second connector 122 and the third circulator 153 are arranged in parallel. Through the above arrangement, the third circulator 153 in the fiber distribution box 1 can be connected with both the first connector 121 and the second connector 122, which increases the types of the connector 12 in the fiber distribution box 1 and improves the adaptability of the fiber distribution box 1.

[0051] In some other embodiments, the optical circulator 15 can further comprise at least one fourth optical circulator 154, the fourth optical circulator 154 can also be a multi-channel optical circulator, and the connector 12 can only comprise the second connector 122, wherein the optical signal transmitted by the second optical fiber 162 through the second connector 122 is transmitted to the optical cable 30 through the first optical fiber 161, and the optical signal transmitted by the optical cable 30 through the first optical fiber 161 is transmitted to the same second connector 122 through the third optical fiber 163. Through the above arrangement, the communication device connected with the fourth optical circulator 154 through the second connector 122 can also make the optical signal transmitted by the communication device to the optical cable 30 through the second optical fiber 162 and the optical signal transmitted by the optical cable 30 to the communication device through the third optical fiber 163 both be transmitted through the same transmission optical fiber 13 in the optical cable 30 through the first optical fiber 161, so that the optical signals input and output by the communication device can be transmitted through one transmission optical fiber 13 when the number of communication devices is certain, thereby reducing the number of transmission optical fibers 13 in the optical cable 30 and reducing the size of the optical cable 30.

[0052] Compared with the embodiment in which the fiber distribution box 1 only comprises the first connector 121, the second connector 122 in the present embodiment can be connected with the second optical fiber 162 and the third optical fiber 163 at the same time, so that the number of connectors 12 provided in the fiber distribution box 1 can be reduced and the structure of the fiber distribution box 1 can be simplified. Moreover, the second optical fiber 162 and the third optical fiber 163 connected with the same second connector 122 can be arranged in parallel, so as to arrange the second optical fiber 162 and the third optical fiber 163 in the cavity. Compared with the single-core connector of the first connector 121, the multi-core connector of the second connector 122 can increase the types of connectors 12 on the fiber distribution box 1 and improve the applicability of the fiber distribution box 1.

[0053] In the embodiment in which the port of the second connector 122 can be connected with 12 optical fibers, the second connector 122 can be connected with 6 second optical fibers 162 and 6 third optical fibers 163. It can be understood that the multi-channel optical circulator connected therewith is connected with 6 first optical fibers 161, and similarly, the 6 first optical fibers 161 connected with the multi-channel optical circulator can be arranged in parallel.

[0054] It should be noted that the present application can comprise one or more of the following embodiments: the embodiment in which the single-channel optical circulator is connected with two first connectors 121, the embodiment in which the multi-channel optical circulator is connected with multiple first connectors 121, the embodiment in which the multi-channel optical circulator is connected with one second connector 122, the embodiment in which the multi-channel optical circulator is connected with multiple second connectors 122, and the embodiment in which the multi-channel optical circulator is connected with multiple first connectors 121 and second connectors 122 at the same time.

[0055] Referring to FIG. 5, in some embodiments, the fiber distribution box 1 can further comprise an optical cross device 17 disposed in the cavity, the optical cross device 17 connecting at least part of the transmission optical fibers 13 in the optical cable 30 and at least part of the first optical fibers 161 connected with the circulator 15, so as to realize flexible scheduling of optical signals between the plurality of transmission optical fibers 13 in the optical cable 30 and the plurality of first optical fibers 161. For example, the optical cross device 17 connects the plurality of transmission optical fibers 13 and the plurality of first optical fibers 161, and the optical cross device 17 can receive a plurality of control signals; when the optical cross device 17 receives a first control signal, the optical cross device 17 connects a first transmission optical fiber 13 and a first first optical fiber 161, and when the optical cross device 17 receives a second control signal, the optical cross device 17 connects the first transmission optical fiber 13 and a second first optical fiber 161. In some embodiments, part of the plurality of transmission optical fibers 13 branched from the optical cable 30 can be connected with the first optical fibers 161 through the optical cross device 17, and another part of the plurality of transmission optical fibers 13 can be directly connected with the first optical fibers 161. In another embodiment, the plurality of transmission optical fibers 13 branched from the optical cable 30 can all be connected with the first optical fibers 161 through the optical cross device 17.

[0056] Referring to FIGS. 2-5, the number of ports of the circulator 15 used to connect with the first optical fibers 161, the second optical fibers 162 and the third optical fibers 163 is not limited in the embodiments of the present application, and FIGS. 2-5 only exemplarily represent the connection relationship between the circulator 15 and the first optical fibers 161, the second optical fibers 162 and the third optical fibers 163. For example, the first optical fibers 161, the second optical fibers 162 and the third optical fibers 163 connected with the first circulator 151 can be connected with the first circulator 151 through three ports respectively. Among the first optical fibers 161, the second optical fibers 162 and the third optical fibers 163 connected with the second circulator 152, the plurality of first optical fibers 161 can be connected with the second circulator 152 through one port, the plurality of second optical fibers 162 can be connected with the second circulator 152 through another port, and the plurality of third optical fibers 163 can be connected with the second circulator 152 through another port; or the plurality of second optical fibers 162 and the plurality of third optical fibers 163 can be connected with the second circulator 152 through one port. The arrangement of the third circulator 153 and the fourth circulator 154 is similar, which is not described herein.

[0057] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An optical fiber distribution box, characterized by, The application relates to a box body, a connector, at least one ring, a first optical fiber, a second optical fiber and a third optical fiber. The connector comprises a plurality of first connectors, and the ring comprises at least one second ring, and one second ring is connected with the plurality of first connectors. The connector comprises a plurality of first connectors and at least one second connector, and the ring comprises at least one third ring, and the first connector and the second connector are connected with the same third ring. The connector comprises a second connector, and the ring comprises a fourth ring, and the second connector is connected with the fourth ring through a second optical fiber and a third optical fiber. The connector comprises a shell, and the shells of at least two connectors connected with the same ring are connected with each other. The first optical fiber is provided with a plurality of first optical fibers, the plurality of first optical fibers are connected with the ring, and the plurality of first optical fibers are arranged in parallel.

2. The fiber optic closure of claim 1, wherein, ​ ​ 3. The fiber optic closure of claims 1 or 2, wherein, ​ ​ 4. The fiber optic outlet box of any of claims 1-3, wherein, ​ ​ 5. The fiber optic outlet box of any of claims 1-4, wherein, ​ 6. The fiber optic outlet box of any one of claims 1-5, wherein, ​ 7. The fiber optic outlet box of any of claims 3-5, wherein, ​ 8. The fiber optic outlet box of any of claims 1-7, wherein, The fiber distribution box further comprises a first distribution structure disposed in the cavity, the optical cable in the cavity is divided into a plurality of transmission optical fibers via the first distribution structure, and one of the plurality of transmission optical fibers is connected with the first optical fiber.

9. The fiber optic outlet box of any of claims 1-7, wherein, The fiber distribution box further comprises a first distribution structure and a second distribution structure disposed in the cavity, the optical cable in the cavity is divided into a plurality of transmission optical fiber groups via the first distribution structure, each transmission optical fiber group is divided into a plurality of transmission optical fibers via the second distribution structure, and the transmission optical fibers are connected with the first optical fiber.

10. The fiber optic closure of claims 8 or 9, wherein, The transmission optical fibers are fusion spliced with the first optical fiber.

11. The fiber optic outlet box of any one of claims 1-10, wherein, The first optical fiber comprises a plurality of optical fibers, and the optical cable comprises a plurality of transmission optical fibers; the fiber distribution box further comprises an optical cross device disposed in the cavity, at least part of the transmission optical fibers are connected with at least part of the first optical fibers via the optical cross device, and the optical cross device is used for adjusting the corresponding connection between a transmission optical fiber and a first optical fiber.

12. A cabinet, characterized by A cabinet comprising at least one fiber distribution box as claimed in any one of claims 1-11 and a cabinet body, the fiber distribution box being disposed in the cabinet body.

13. A data center, characterized by, A cabinet comprising a plurality of cabinets as claimed in claim 12 and a switch, the fiber distribution box in the cabinet being connected with the switch.

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