Apparatus, method, device and medium for implementing large optical CLOS network interconnection

Abstract

The embodiment of the application discloses a device, method, equipment and medium for realizing large optical CLOS network interconnection, relates to the technical field of telecommunication equipment, and solves the technical problem of complex fiber wiring when the optical CLOS network is interconnected as a connection unit, and the technical solution points are at least two optical interconnection modules, each optical interconnection module comprises at least one optical interconnection unit, the optical CLOS cross connection device comprises an optical waveguide interconnection plate, an optical connector and a structure, the optical waveguide interconnection plate and the optical connector are fixed through the structure, and the optical interconnection unit is connected with the optical waveguide interconnection plate through the optical connector. When the device and the method are used for equipment networking, the fiber wiring is greatly optimized, the individualization demand of the fiber interconnection is shielded, the complexity of the fiber connection between the optical interconnection units is greatly simplified, the deployment speed of the equipment is improved, and the deployment quality of the equipment is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of telecommunication equipment, in particular to optical interconnection of data switch, router, SR, BRAS and large-scale wavelength division equipment, and specifically relates to an apparatus, method, device and medium for realizing large-scale optical CLOS network interconnection. BACKGROUND

[0002] With the increasing difficulty of high-density electrical interconnection of the backplane of large-scale communication switching equipment, the demand for optical interconnection within the switching equipment and between the switching equipment is increasing. The optical interconnection within the equipment has many natural advantages over the electrical interconnection. One important advantage is that it breaks through the constraint of the 40-inch length of the electrical backplane, decouples the length constraint between the line card and the switching card within the equipment, and inevitably leads to great changes in the form and networking mode of the equipment.

[0003] However, in a large-scale communication equipment system in which all the interconnection units are optically interconnected, the connection units are generally interconnected by using a CLOS topology network, which leads to very complex fiber connections between the optical interconnection units. The fiber of one interconnection unit will be connected to multiple optical interconnection units. In addition, in the same optical interconnection unit, the fibers can belong to different optical engines, and these optical interconnection units have a certain distance in space. The optical interconnection units are directly connected by fibers, leading to very complex fiber wiring. The complexity of the optical interconnection network within and between large-scale equipment leads to a series of problems in equipment production, deployment, expansion, etc. SUMMARY

[0004] The present disclosure provides an apparatus, method, device and medium for realizing large-scale optical CLOS network interconnection, and the technical purpose is to simplify the fiber wiring and reduce the complexity of the optical interconnection network when using optical CLOS network as the connection unit for interconnection.

[0005] The above technical purpose of the present disclosure is achieved by the following technical solutions:

[0006] An apparatus for realizing large-scale optical CLOS network interconnection, comprising:

[0007] at least two optical interconnection modules, each of which comprises at least one optical interconnection unit;

[0008] an optical CLOS cross-connection device, comprising an optical waveguide interconnection board, an optical connector and a structure, the optical waveguide interconnection board and the optical connector being fixed by the structure;

[0009] the optical interconnection unit is connected to the optical waveguide interconnection board through the optical connector.

[0010] Further, the optical interconnection module comprises:

[0011] a first optical interconnection module comprising at least one first optical interconnection unit;

[0012] a second optical interconnection module comprising at least one second optical interconnection unit;

[0013] a third optical interconnection module comprising at least one third optical interconnection unit;

[0014] wherein the number of the first optical interconnection module and the third optical interconnection module is 1, the number of the second optical interconnection module is 0 or 1, and the second optical interconnection module is located in the middle of the first optical interconnection module and the third optical interconnection module.

[0015] Further, when the number of the second optical interconnection module is 0, the first optical interconnection unit is connected to the left side of the optical waveguide interconnection board through the optical connector, and the third optical interconnection unit is connected to the right side of the optical waveguide interconnection board through the optical connector.

[0016] Further, when the number of the second optical interconnection module is 1, the optical CLOS cross-connect device further comprises a first optical CLOS cross-connect device and a second optical CLOS cross-connect device, the first optical CLOS cross-connect device comprises a first optical waveguide interconnection board and the first optical connector, and the second optical CLOS cross-connect device comprises a second optical waveguide interconnection board and the second optical connector.

[0017] The first optical interconnection unit is connected to the left side of the first optical waveguide interconnection board through the first optical connector, the second optical interconnection unit is connected to the right side of the first optical waveguide interconnection board through the first optical connector and to the left side of the second optical waveguide interconnection board through the second optical connector, and the third optical interconnection unit is connected to the right side of the second optical waveguide interconnection board through the second optical connector.

[0018] Further, the number of the first optical interconnection unit is the same as that of the third optical interconnection unit.

[0019] Further, the structure of the structure body comprises a white box switch and a plug-in box body, the optical waveguide interconnection boards are sequentially arranged in the middle of the structure body, and the optical interconnection modules and the optical connectors are arranged on the front end face of the structure body.

[0020] Further, the optical waveguide interconnection boards comprise glass-based optical waveguide interconnection boards and polymer-based optical waveguide interconnection boards.

[0021] The application discloses a method for realizing interconnection of a large optical CLOS network.

[0022] The application discloses a device for realizing interconnection of a large optical CLOS network.

[0023] The application discloses a computer medium, wherein a computer program is stored in the computer medium.

[0024] The application discloses a device for realizing interconnection of a large optical CLOS network. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The application discloses a device for realizing interconnection of a large optical CLOS network.

[0026] Figure 2 The application discloses a device for realizing interconnection of a large optical CLOS network.

[0027] Figure 3 The application discloses a device for realizing interconnection of a large optical CLOS network.

[0028] Figure 4 The application discloses a device for realizing interconnection of a large optical CLOS network.

[0029] Figure 5 The application discloses a device for realizing interconnection of a large optical CLOS network.

[0030] Figure 6 The application discloses a device for realizing interconnection of a large optical CLOS network.

[0031] Figure 7Structure diagram of optical CLOS cross-connect device-white box switch;

[0032] Figure 8 Structure diagram of optical CLOS cross-connect device-pluggable box;

[0033] Figure 9 Schematic diagram of cross-connection of first optical interconnection module and second optical interconnection module through first optical waveguide interconnection plate;

[0034] Figure 10 Schematic diagram of deployment wiring of existing long-distance optical interconnection equipment;

[0035] Figure 11 Schematic diagram of deployment wiring of long-distance optical interconnection equipment of embodiments of the present application. DETAILED DESCRIPTION

[0036] The technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings. In the description of the present disclosure, it should be understood that the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features, but only used to distinguish different components.

[0037] In addition, the terms "left side", "right side", "top", "bottom", "front", "back", "middle", "front end face" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present disclosure.

[0038] Figure 1 Schematic diagram of large-scale optical CLOS network interconnection device described in the present disclosure, as shown in Figure 1 The optical interconnection units of the optical interconnection module are connected with the optical waveguide interconnection plate through optical connectors, thereby realizing the connection between different optical interconnection modules and forming the interconnection of the large-scale optical CLOS network.

[0039] Figure 2 Schematic diagram of the composition of the optical interconnection unit, as shown in Figure 2 The optical interconnection unit includes two parts, one part is a large-scale digital chip based on Co-Packaged, Co-Packaged is a self-developed silicon optical chip, and the other part is other related optoelectronic circuits. The optical interconnection function is realized by the Co-packaged large-scale digital chip, which uses fiber bundles and external connections, and Figure 2 As can be seen, these fiber bundles generally come from different optical engines.

[0040] For simplicity of description, the first optical interconnection module is referred to as module A, the second optical interconnection module as module B, the third optical interconnection module as module C, the first optical waveguide interconnection board as module E, the second optical waveguide interconnection board as module H, the first optical connector on the left side of the first optical waveguide interconnection board between module A and module E as module D, the first optical connector on the right side of the first optical waveguide interconnection board between module B and module E as module F, the second optical connector on the left side of the second optical waveguide interconnection board between module B and module H as module G, the second optical connector on the right side of the second optical waveguide interconnection board between module C and module H as module I, and the structure as module J.

[0041] In addition, for simplicity of description, it is assumed that the first optical interconnection module of the CLOS network has n first optical interconnection units, the second optical interconnection module has m second optical interconnection units (each second optical interconnection unit has 1 optical interconnection interface on each side, and each optical interconnection interface has a plurality of optical fibers, so that the m second optical interconnection units have a total of 2m optical interconnection interfaces), and the third optical interconnection module has k third optical interconnection units; each first optical interconnection unit has n1 optical fibers, each second optical interconnection unit has m1 optical fibers, and each third optical interconnection unit has k1 optical fibers. Conventionally, n=k and n1=k1.

[0042] First, an integrated module composed of module D, module E and module F is placed on module J, and the three modules constitute the CLOS optical cross interconnection network between the first optical interconnection module and the second optical interconnection module of the CLOS network of the device. Similarly, an integrated module composed of module G, module H and module I is placed on module J, and the three modules constitute the CLOS optical cross interconnection network between the second optical interconnection module and the third optical interconnection module of the CLOS network of the device. Different module E and module H need to be customized for different network topologies.

[0043] Module A is connected to module E through module D, and in module E, the optical path will be transmitted to module F according to the preset design. From the perspective of CLOS network interconnection, the connection between the first optical interconnection module and the second optical interconnection module is realized, and the complexity of the topology of the connection is realized through module E, so that the complexity of the connection of the optical fibers of the optical interconnection units is shielded.

[0044] So, the first optical interconnection unit 1 with n1 optical paths, through the optical fiber and the first optical connector (i.e. module D) into the first optical CLOS cross-connect device, along the first optical waveguide interconnection board, respectively connected to the first optical connector (i.e. module F) on the left side of the m second optical interconnection module, and then into the left side of the m second optical interconnection units of the second optical interconnection module (left optical interconnection port, the same below). Thus, from the n1 optical paths of the first optical interconnection unit 1, there are n1 / m optical paths along the waveguide to the left side of the first second optical interconnection unit of the second optical interconnection module, and the left side of the other second optical interconnection units of the second optical interconnection module will also receive n1 / m optical paths, as shown in Figure 3 .

[0045] Similarly, the other first optical interconnection units 2, 3,..., n of the first optical interconnection module, according to the unified connection mode, i.e. through module D to module E, are divided into n1 / m paths in module E, and then respectively enter the left side of the second optical interconnection units of the second optical interconnection module through module F. In this way, the second optical interconnection units close to the first optical interconnection module side of the second optical interconnection module receive [(n1 / m)*n] optical paths, completing the connection of the CLOS network from the first optical interconnection module to the second optical interconnection module. At the same time, the optical interconnection units of the first optical interconnection module and the second optical interconnection module are connected through the optical cable of the standard fiber sequence and the optical CLOS cross-connect device, which overall shields the difference and optimizes the design.

[0046] The right side (right optical interconnection port) of the second optical interconnection unit 1 of the second optical interconnection module with m1 optical fiber channels is connected to module G through the optical cable of the standard fiber sequence, and the optical path enters module H, which is connected to k second optical connectors (i.e. module I) according to the pre-designed optical path connection rule, and then connected to module C (i.e. all optical interconnection units of the third optical interconnection module) through optical fiber. In this way, the number of optical paths of each third optical interconnection unit is m1 / k, and so on. The optical paths of the right side of the second optical interconnection units 2, 3,..., m of the second optical interconnection module to the third optical interconnection module are [(m1 / k)*m], which completes the connection of the CLOS network from the second optical interconnection module to the third optical interconnection module, i.e. connected through the optical cable of the standard fiber sequence and the optical CLOS cross-connect device, shielding the difference and realizing the interconnection of the optical interconnection units and the standardized design, as shown in Figure 4 .

[0047] The connection diagram of the existing optical CLOS network is shown in Figure 5 . Assuming that n1=192, n=32, and m=24, the second optical interconnection module receives 256 optical fibers, and these optical fibers come from 32 optical interconnection units. This high-density interconnection is very challenging for system deployment, and the direct problems are quality risks, deployment speed, and expansion difficulties.

[0048] The network connection mode of the embodiment of the present application is shown in Figure 6 As shown in the figure, in terms of specific implementation, the optical interconnection units 1, 2,..., 32 of the first optical interconnection module are connected to the first optical CLOS cross-connection device through a 192-core optical cable of a standard fiber sequence; the optical interconnection units 1, 2,..., 24 of the second optical interconnection module are connected to the first optical CLOS cross-connection device using a 256-core optical cable. Then, the first optical CLOS cross-connection device has a total of 192 optical paths at the first optical connector (i.e., module D) close to the first optical interconnection module, and the 192 optical paths are connected to the 24 first optical connectors (i.e., module F) on the left side of the second optical interconnection module, and each optical connector in module F receives 8 optical fibers. Since the first optical interconnection module has a total of 32 optical connectors, each optical connector on the left side of the second optical interconnection module is connected to 32*8=256 optical paths.

[0049] In summary, the first optical CLOS cross-connection device has a total of 32*192=6144 optical paths, and the total number of optical paths in the second optical CLOS cross-connection device can also be obtained. Finally, the optical interconnection units of the first optical interconnection module and the optical interconnection units on the left side of the second optical interconnection module are connected through the first optical CLOS cross-connection device with 6144 optical paths; the optical interconnection units on the right side of the second optical interconnection module and the optical interconnection units of the third optical interconnection module are connected through the second optical CLOS cross-connection device with 6144 optical paths, and finally the connection of the entire optical network optical interconnection unit is realized.

[0050] If expansion is needed, the optical CLOS cross-connection device can be replaced after increasing the optical interconnection units of each module.

[0051] Embodiment one: glass-based optical waveguide interconnection board

[0052] The optical waveguide interconnection board is the core part of the embodiment of the present application, and the complexity of the CLOS network interconnection is realized by the optical waveguide interconnection board. Therefore, the optical fiber interconnection for external interconnection can use a standard fiber sequence. The optical CLOS cross-connection device of the present embodiment uses high-density optical connectors and glass-based optical waveguide interconnection boards. The reason for using waveguides as interconnection boards is that the optical paths in the waveguides can almost perfectly cross each other without mutual interference, that is, a very large cross-connection network can be integrated in a layer of waveguides.

[0053] Glass-based is used because of the advantages of loss and cost of glass-based. The glass-based waveguide produced by the plasma infiltration process perfectly supports the interconnection between single-mode optical fibers, and the availability of the domestic industry chain is better than that of organic waveguides.

[0054] Figure 9 The diagram shows the cross-interconnection of the first and second optical interconnect modules via a first optical waveguide interconnect board. The left sides of the optical interconnect units of the first and second optical interconnect modules are connected via optical connectors D and F. All connections use standard fiber sequences. Similarly, the connection between the second and third optical interconnect modules is the same.

[0055] The fabrication of optical waveguide interconnect boards follows a pre-defined CLOS network interconnection topology. For example, the first optical interconnect module has n first optical interconnect units, the second optical interconnect module has m second optical interconnect units, and the third optical interconnect module has k third optical interconnect units. Each first optical interconnect unit has n1 optical fibers, each second optical interconnect unit has m1 optical fibers, and each third optical interconnect module has k1 optical fibers, typically n = k and n1 = k1. Therefore, two custom-made CLOS network cross-interconnected glass-based optical waveguide interconnect boards are needed: one for a full mesh network from n*n1 to m*m1, and another for a full mesh network from m*m1 to k*k1.

[0056] Example 2: Polymer-based optical waveguide interconnect board. Polymer is used mainly because polymer waveguides have better compatibility with existing PCB boards, and can be easily fabricated into an optoelectronic hybrid optical waveguide interconnect board. Other details are the same as in Example 1 and will not be repeated here.

[0057] Example 3: Optical CLOS cross-connect device for white-box switches

[0058] like Figure 7 As shown, this embodiment adopts a box-type structure, and its dimensions are uniform with other white boxes in the rack. The size of the optical waveguide interconnect board can also be adjusted according to specific dimensions. At the same time, unified operation display and other electrical functions can be designed according to the unified style of the whole machine, realizing the actual deployment of optoelectronic hybrid systems.

[0059] This white-box switch includes a top panel, a bottom panel, a front panel, and a rear panel. The top and bottom layers of the panel each have an optical waveguide interconnect board installed, which corresponds to two interconnected fullmesh networks of the CLOS network. Thus, a box with optical CLOS network cross-connection can support a complete optical interconnect device. That is, the optical waveguide interconnect board on the top layer of the panel is used for the network connection of the first optical interconnect module and the second optical interconnect module, and the optical waveguide interconnect board on the bottom layer of the panel is used for the connection of the second optical interconnect module and the third optical interconnect module.

[0060] Meanwhile, embodiments of the present invention use the front panel for fiber optic interconnection, which improves the ease of plugging and unplugging fiber optic connectors and reduces dust interference.

[0061] Embodiment four: optical CLOS cross-connect device for card-inserting box

[0062] In the CLOS network, the card-inserting networking mode is mainly used because of its high density. The present embodiment uses a lower supporting plate as the guide rail of the slot of the card insertion, and uses bolts and studs as the positioning device. As shown in Figure 8 The present embodiment uses the card-inserting box mode, which includes an upper panel, a lower panel, a front panel and a rear panel. For details, please refer to Embodiment three.

[0063] Embodiment five: remote optical CLOS network interconnection

[0064] The optical fiber wiring inside a large data center is getting longer and longer. The current optical fiber interconnection length can reach 2km. In such a medium-long distance high-density optical fiber connection, if DWDM (Dense Wavelength Division Multiplexing) equipment is used for interconnection, the cost of the equipment will be very high. Therefore, direct single-mode optical fiber interconnection must be the mainstream. However, for such long-distance high-density optical fiber interconnection, how to flexibly and quickly deploy equipment is a problem that needs to be solved urgently.

[0065] Specifically, if local1 has i optical interconnection units, each interconnection unit has i1 optical fibers, and according to the network interconnection relationship, it needs to be connected with j optical interconnection units of local2 2km away, and each optical interconnection unit of local2 has j1 optical fibers. If the connection mode of the CLOS network is used, each optical interconnection unit of local1 needs to have k1 / j optical fibers connected to each optical interconnection unit of local2. Generally, the optical cable of such a distance is pre-installed, and the wiring is arranged through the wiring rack. It is very troublesome to adjust the fiber sequence of high-density wiring.

[0066] The existing solution is to directly use the wiring rack to realize such medium-long distance interconnection. If a network interconnection similar to CLOS or MESH needs to be realized, the order of the access optical fibers of the optical interconnection units of local1 or local2 must be adjusted, and once it is fixed, it will be very troublesome to change the deployment or adjust the network topology, as shown in Figure 10 That is, the fiber sequence of the optical interconnection units of local1 is associated with the fiber sequence of the 2km optical cable.

[0067] The device of the present embodiment can easily solve this problem. Specifically, an optical CLOS cross-connect device is used to replace one of the wiring racks, as shown in Figure 11As shown, the optical CLOS cross-connect device taking the network connection topology as a standard, so the optical cable of 2km and the optical interconnection unit of local1 can use the standard fiber sequence and the optical CLOS network cross interconnection, thereby decoupling the fiber sequence of the optical fiber from the specific of the network topology. If the topology of the optical interconnection unit of local1 and local2 is to be changed, the optical CLOS cross-connect device can be directly replaced.

[0068] Embodiment six: In general, the first optical interconnection module is at the leftmost side of the entire optical CLOS network, the third optical interconnection module is at the rightmost side of the entire optical CLOS network, and the second optical interconnection module is in the middle of the first optical interconnection module and the third optical interconnection module, the number of the first optical interconnection module and the third optical interconnection module is 1, and the number of the second optical interconnection module is 0 or 1. When the number of the second optical interconnection module is 0, the first optical interconnection module and the third optical interconnection module are directly connected through the optical waveguide interconnection board.

[0069] When the number of the second optical interconnection module is 1, the optical CLOS cross-connect device includes a first optical CLOS cross-connect device and a second optical CLOS cross-connect device, the first optical CLOS cross-connect device includes a first optical waveguide interconnection board and a first optical connector, and the second optical CLOS cross-connect device includes a second optical waveguide interconnection board and a second optical connector; the right side of the first optical interconnection unit of the first optical interconnection module is provided with an optical interconnection port, the left side of the third optical interconnection unit of the third optical interconnection module is provided with an optical interconnection port, and the left side and the right side of the second optical interconnection unit of the second optical interconnection module are both provided with optical interconnection ports, and the specific connection can refer to the above description and will not be repeated here.

[0070] The above is an exemplary embodiment of the present disclosure, and the protection scope of the present disclosure is defined by the claims and their equivalents.

Claims

1. An apparatus for implementing interconnection of large optical CLOS networks, characterized by, include: At least two optical interconnect modules, each of which includes at least one optical interconnect unit; An optical CLOS cross-connect device includes an optical waveguide interconnect board, an optical connector, and a structure, wherein the optical waveguide interconnect board and the optical connector are fixed by the structure. The optical interconnect unit is connected to the optical waveguide interconnect board via the optical connector; The optical waveguide interconnect board is sequentially arranged in the middle of the structure, and the optical interconnect module and the optical connector are both located on the front end face of the structure.

2. The apparatus for implementing large optical CLOS network interconnection of claim 1, wherein, The optical interconnect module includes: The first optical interconnect module includes at least one first optical interconnect unit; The second optical interconnect module includes at least one second optical interconnect unit; The third optical interconnect module includes at least one third optical interconnect unit; The number of the first optical interconnect module and the third optical interconnect module is 1, the number of the second optical interconnect module is 0 or 1, and the second optical interconnect module is located between the first optical interconnect module and the third optical interconnect module.

3. The apparatus for implementing large optical CLOS network interconnection of claim 2, wherein, When the number of the second optical interconnect modules is 0, the first optical interconnect unit is connected to the left side of the optical waveguide interconnect board through the optical connector, and the third optical interconnect unit is connected to the right side of the optical waveguide interconnect board through the optical connector.

4. The apparatus for implementing large optical CLOS network interconnection of claim 3, wherein, When the number of the second optical interconnect modules is 1, the optical CLOS cross-connect device further includes a first optical CLOS cross-connect device and a second optical CLOS cross-connect device. The first optical CLOS cross-connect device includes a first optical waveguide interconnect board and a first optical connector. The second optical CLOS cross-connect device includes a second optical waveguide interconnect board and a second optical connector. The first optical interconnect unit is connected to the left side of the first optical waveguide interconnect board via the first optical connector; the second optical interconnect unit is connected to the right side of the first optical waveguide interconnect board via the first optical connector and to the left side of the second optical waveguide interconnect board via the second optical connector; the third optical interconnect unit is connected to the right side of the second optical waveguide interconnect board via the second optical connector.

5. The apparatus for implementing large optical CLOS network interconnection of claim 4, wherein, The number of the first optical interconnect unit and the third optical interconnect unit are the same.

6. The apparatus for implementing a large optical CLOS network interconnection of claim 1, wherein, The structure includes a white-box switch or a plug-in card box.

7. The apparatus for implementing large optical CLOS network interconnection according to any one of claims 1-6, wherein, The optical waveguide interconnect board includes a glass-based optical waveguide interconnect board or a polymer-based optical waveguide interconnect board.

8. A method for implementing interconnection of large optical CLOS network, which is implemented by the device for implementing interconnection of large optical CLOS network according to any one of claims 1-7, characterized in that, The optical interconnect unit of the optical interconnect module is connected to the optical waveguide interconnect board through an optical connector to realize the connection of the optical interconnect module.

9. An apparatus for implementing interconnection of large optical CLOS networks, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein, When the processor executes the program, it implements the method for interconnecting large-scale optical CLOS networks as described in claim 8.

10. A computer medium, characterized by The computer medium stores a computer program, which, when executed by a processor, implements the method for interconnecting large-scale optical CLOS networks as described in claim 8.

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