WO2017118388A1 - Dispositif de sous-rail de plan arrière optique - Google Patents

Dispositif de sous-rail de plan arrière optique Download PDF

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Publication number
WO2017118388A1
WO2017118388A1 PCT/CN2017/070172 CN2017070172W WO2017118388A1 WO 2017118388 A1 WO2017118388 A1 WO 2017118388A1 CN 2017070172 W CN2017070172 W CN 2017070172W WO 2017118388 A1 WO2017118388 A1 WO 2017118388A1
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WO
WIPO (PCT)
Prior art keywords
optical
cards
card
switch
connector
Prior art date
Application number
PCT/CN2017/070172
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English (en)
Chinese (zh)
Inventor
尚迎春
陈勋
刘雨
叶兵
王会涛
Original Assignee
中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2017118388A1 publication Critical patent/WO2017118388A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/02—Constructional details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/02—Constructional details
    • H04Q1/09—Frames or mounting racks not otherwise provided for
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439—Auxiliary devices
    • G02B6/444—Systems or boxes with surplus lengths
    • G02B6/4452—Distribution frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/02—Constructional details
    • H04Q1/15—Backplane arrangements
    • H04Q1/155—Backplane arrangements characterised by connection features

Definitions

  • the embodiments of the present invention relate to a communication device in a communication field, such as an OTN (Optical Transport Network), a PTN (Packet Transport Network), a router, and the like, which are configured to use a centralized switching/crossover (Central Switch) structure.
  • An optical backplane subrack device such as an OTN (Optical Transport Network), a PTN (Packet Transport Network), a router, and the like, which are configured to use a centralized switching/crossover (Central Switch) structure.
  • An optical backplane subrack device is configured to use a centralized switching/crossover (Central Switch) structure.
  • the centralized switching device based on the OTN, PTN, and IP Internet Protocol is mainly used to implement high-speed interconnection between service boards and switch boards through backplane routing.
  • optical backplane technology when optical backplane technology is used to realize high-speed interconnection of centralized cross-devices, high-speed optical signals are interconnected through a large optical backplane, such as using an optical waveguide board as an optical backplane, and a line card or switch card is installed through the optical backplane by 90°.
  • the mirror is connected perpendicularly to the optical backplane, but the installation of the mirror is inconvenient and the insertion loss is large, which is not conducive to the realization of the large-capacity optical backplane.
  • the optical backplane interconnection system and communication equipment of the patent number CN101882955A requires that the service board and the switch card are orthogonal to each other, and are directly connected through the waveguide connector, and the optical signal is not taken off on the backplane.
  • the design of the backplane is relatively simple, but in the large-capacity subrack, the switch card behind this design requirement is too long, and needs to cover from the low end to the top of the subrack, which undoubtedly increases the design difficulty of the switch card and the difficulty of production and installation.
  • optical backplane for use with a communications equipment chassis and method of operation therefor
  • US Pat. No. 6,823,100 B1 based on a 3D (three dimensional) MEMS (Micro Electro Mechanical System) mirror, mounted through a rack door
  • An angled incident mirror, main mirror, and mirror are used to establish a transceiver link for free-space optical interconnection.
  • the optical interconnects achieved by this optical backplane technology are unstable, especially in the large-capacity cross-racks, thousands Tens of thousands of optical interconnect lines, this technology is difficult to achieve stable optical interconnection.
  • an optical backplane subrack device which overcomes the requirement that a 90° optical signal transition is required when the optical backplane is connected in the related art, and the optical insertion loss is large, and the line card is directly exchanged.
  • the card crosses the optical connection vertically and causes the optical switch card to be too large.
  • An optical backplane subrack device comprising: one or more subracks and P optical backplanes, each of the subracks comprising M switch cards and L line cards, each of the switch cards comprising one or more An optical connector or an optical connector and an electrical connector, each of the line cards including one or more optical connectors or optical connectors and electrical connectors; each of the optical backplanes including one or more optical connections Through the optical connectors on the P optical backplanes, the M switch cards of each layer are connected with all the line cards of different layers, so that all optical connectors and switch cards corresponding to the line cards of different layer subracks are connected. At least one optical connection channel between all corresponding optical connectors; and,
  • the number P of optical backplanes is equal to the number M of switch cards of each layer.
  • all the optical connectors corresponding to the line cards in the same layer subrack are connected to all the optical connectors corresponding to the switch card.
  • the M switch cards are vertically inserted into each subrack, and the L line cards are horizontally inserted into each subrack.
  • the optical connector on each optical backplane is divided into the same number of layers as the subrack, and the optical backplane passes The optical connectors of each layer are connected to the L line cards of the current layer of the subrack, and the switch cards of the current layer of the subrack are connected through the optical connectors of each layer.
  • the optical connector of each connection line card on the optical backplane is connected to all optical connectors of the layer connection switch card, or the optical connector and the connection switch of the connection line card of different layers on the optical backplane are exchanged.
  • the card's optical connectors are connected.
  • the optical backplane comprises a fiber optic flexible optical backplane and an optical waveguide optical backplane
  • the optical connector comprises: a mechanical transfer MT optical fiber connector and/or a multi-core multi-channel plug-in MPO optical connector.
  • the optical backplane and the line card are directly connected through the edge of the board, and the optical backplane and the switch card are connected to the board of the switch card through the edge of the board or the edge of the board of the optical backplane.
  • a line card is connected to the same row of switch cards of all layers through an optical connector of an optical backplane; or a line card is connected through the optical connector of the optical backplane and the electrical connector or optical connector of the board edge thereof.
  • a connector or optical connector connects all the switch cards of all layers.
  • a switch card is connected to the line cards of all layers through an optical connector of an optical backplane; or a line card is connected to all layers through an optical connector of an optical backplane and an electrical connector or optical connector at the edge of the board.
  • Line card is connected to the line cards of all layers through an optical connector of an optical backplane; or a line card is connected to all layers through an optical connector of an optical backplane and an electrical connector or optical connector at the edge of the board.
  • the embodiment of the present invention has the following beneficial effects:
  • the optical backplane subrack device of the embodiment of the present invention is one or more layers of vertical insertion switch cards on one side of the subrack, and the optical backplane and the exchange card are overlapped or directly connected in parallel, and the other side of the subrack is all line cards and lines
  • the link between the card and the switch in the same layer is directly connected to the optical connector or the optical connector, and the link between the line card and the switch card is not connected through the optical backplane.
  • the optical backplane is used to connect the line card and the switch card.
  • FIG. 1 is a signal connection diagram between a line card and a switch card according to an embodiment of the present invention
  • Figure 2 is a perspective structural view of the sub-rack according to Embodiment 1 of the present invention.
  • FIG. 3 is a schematic diagram showing the design of the front and rear panels, the optical backplane, the line card, and the switch card of the subrack according to Embodiment 1 of the present invention
  • Figure 4 is a perspective structural view of the sub-rack according to Embodiment 2 of the present invention.
  • FIG. 5 is a schematic diagram showing the design of the front and rear panels, the optical backplane, the line card, and the switch card of the subrack according to Embodiment 2 of the present invention
  • Figure 6 is a perspective structural view of the sub-rack according to Embodiment 3 of the present invention.
  • FIG. 7 is a schematic diagram showing the design of the front and rear panels, the optical backplane, the line card, and the switch card of the subrack according to Embodiment 3 of the present invention.
  • Figure 8 is a perspective structural view of the sub-rack according to Embodiment 4 of the present invention.
  • FIG. 9 is a schematic diagram showing the design of the front and rear panels, the optical backplane, the line card, and the switch card of the subrack according to Embodiment 4 of the present invention.
  • Figure 10 is a perspective structural view of the sub-rack according to Embodiment 5 of the present invention.
  • FIG. 11 is a schematic view showing the design of the front and rear panels, the optical backplane, the line card, and the switch card of the subrack according to Embodiment 5 of the present invention.
  • an embodiment of the present invention provides an optical backplane subrack device, including:
  • One or more subracks and P optical backplanes are One or more subracks and P optical backplanes,
  • Each of the subracks includes M switch cards and L line cards, each of the switch cards including one or more optical connectors or optical connectors and electrical connectors, each of the line cards including one or more Optical connectors or optical connectors And an electrical connector; each of the optical backplanes includes one or more optical connectors on both sides;
  • the M switch cards of each layer are connected to all the line cards of different layers, so that all the optical connectors corresponding to the line cards of different layer subracks correspond to the switch cards.
  • the M switch cards of each layer are connected to the L line cards through the optical connectors on the P optical backplanes, so that all optical connectors and switch cards corresponding to the line cards in the same layer subrack are connected.
  • At least one optical connection channel between all corresponding optical connectors (or through the optical connectors on the P optical backplanes and the optical connectors or electrical connectors on the switch card and the line card, M of each layer)
  • the switch card is connected to the L line cards, so that at least one electrical connection channel is formed between all the electrical connectors corresponding to the line cards of the same layer subrack and all the electrical connectors corresponding to the switch card; through the P optical backplanes
  • the upper optical connector connects the M switch cards of each layer and the L line cards, so that at least one of all the optical connectors corresponding to the line cards of the different layer subracks and all the optical connectors corresponding to the switch card Optical connection channel, where M, N, and P are positive integers.
  • FIG. 1 is a diagram showing a signal connection between a line card and a switch card according to an embodiment of the present invention.
  • the line card splits the input service into multiple signals, and sends them to each switch card separately, or combines the multiple signals exchanged by each switch card into one service for external output; the switch card is based on the signal destination port sent by the input line card.
  • the signal is switched to the corresponding output line card; the optical backplane realizes the optical signal connection between the line card and the switch card.
  • the subrack is composed of one or more layers, the front side is a horizontally inserted line card, and the back side is a vertical insertion switch card.
  • the optical backplane and the switch card are overlapped or directly connected in parallel, and the number of exchange cards of each layer is the same as the number of optical backplanes.
  • the line card, the switch card, and the optical backplane have optical connectors, and the line card and the switch card are optically connected through the optical backplane.
  • the line card and the switch card can also have an optical connector to realize direct optical interconnection between the line card and the switch card of the same layer; or the line card and the switch card can also have an electrical connector to realize the line card of the same layer and
  • the switch cards are directly electrically interconnected.
  • the number of optical backplanes P is equal to the number M of switching cards per layer.
  • All the optical connectors corresponding to the line cards in the same subrack are connected to all the optical connectors corresponding to the switch card.
  • the M switch cards are vertically inserted into each subrack, and the L line cards are horizontally inserted into each subrack.
  • optical connectors on each of the optical backplanes are divided into the same number of layers as the subracks, and the optical backplanes are connected to the L lines of the current layer of the subrack through the optical connectors of each layer, and pass the light of each layer.
  • the connector connects to the switch card of the current layer of the subrack.
  • the optical connectors thereon are divided according to the layer arrangement to connect the individual boards in each layer.
  • optical connector of each connection line card on the optical backplane is connected to the optical connector of all the layers of the switch card, or the optical connector of the connection line card of the different layer on the optical backplane is connected with the optical connection of the switch card. Connected.
  • the optical backplane includes a fiber optic flexible optical backplane and an optical waveguide optical backplane
  • the optical connector includes: an MT (Mechanical Transfer) optical fiber connector and/or a multi-fiber Push On MPO (Multi-fiber Push On) The optical fiber connector.
  • the optical backplane and the line card are directly connected through the edge of the board, and the optical backplane and the switch card are connected to the board of the switch card through the edge of the board or the edge of the board of the optical backplane.
  • a line card connects the switch cards of the same column of all layers through an optical connector of an optical backplane; or a line card connects the same column of all layers through the optical connector of the optical backplane and the electrical connector or optical connector of the board edge Switch card; and, one line card connects all the switch cards of all layers through the optical connectors of all optical backplanes; or one line card passes all the optical connectors of the optical backplane and the electrical connectors or light of its board sides The connector connects all the switch cards of all layers.
  • a switch card connects all layers of line cards through an optical backplane optical connector; or a line card connects all layers of line cards through an optical backplane optical connector and its board edge electrical connectors or optical connectors.
  • the main features of the optical backplane subrack device provided by the embodiment of the present invention are as follows:
  • the switch card has one or more optical connectors (such as MT, MPO, etc.) or electrical connectors on the other side of the panel, or one or more optical connectors (such as MT, MPO) in the board. Equal connector)
  • the line card has one or more optical connectors (such as connectors for MT, MPO, etc.) or optical connectors (such as connectors for MT, MPO, etc.) and electrical connectors on the other side of the panel;
  • the number P of the optical backplane is equal to the number M of the switch cards vertically inserted in each layer.
  • the optical backplane is similar to the overall height of all the service boards in the subrack.
  • the optical connector and the subrack are divided into the same number of layers.
  • the optical backplane has several optical signal connectors (such as MT, MPO, etc.). ), one side of which is connected to all the line cards in front of the sub-frame through the optical connector, and the other side of the sub-frame is connected to one of the switches in the same vertical direction on the back side of the sub-frame through the optical connector.
  • the optical connector on the side of the line card can be cross-connected with all the connectors on the side of the switch card (as shown in the optical backplane connection diagram in Figure 7); or the same layer on the side of the line card.
  • the optical connector is completely cross-connected with the optical connectors of different layers on one side of the switch card (as shown in the optical backplane connection diagram in FIG. 3);
  • the optical backplane may be an optical backplane composed of a fiber optic flexible board, or an optical backplane composed of an optical waveguide, which may include an optical port, or may be fixed by a connector of the first two boards and a fiber with a certain length. A small part that realizes the function of the optical backplane is formed on the structural member.
  • the method of connecting the switch between the internal switch card and the line card of the subrack is as follows:
  • the optical connector of the switch card can be in the board. At this time, the connection relationship between the optical backplane and the switch card is parallel.
  • the optical connector of the switch card can be on the edge of the board. At this time, the connection relationship between the optical backplane and the switch card is the same. One direction is directly connected;
  • optical backplane there is at least one optical connection channel between all optical connectors on one side of the line card and all optical connectors on the same layer on the side of the switch card;
  • the optical connector of the switch card is in the board, and the connection relationship between the optical backplane and the switch card is parallel overlap; the switch card has an electrical connector or an optical connector directly connected to the line card at the edge of the board;
  • the line card has both an optical connector connected to the optical backplane and a corresponding electrical connector or optical connector directly connected to the edge of the switch card;
  • the optical backplane connector has a high port integration, and one port can contain dozens or more optical links, which can be used to design a port that is interconnected between simple boards;
  • optical backplane and the switch card are installed in parallel, which can reduce the space of the cabinet depth, save space in the equipment room, or increase the exchange capacity of the system in the same space;
  • the optical link loss is small, and is insensitive to the transmitted optical signal rate, and can ensure the transmission of the backplane signal at a rate of 25/28 Gbps and above;
  • the line card and the switch card are on different subrack devices. The O&M personnel do not need to operate on the face of the switch card during normal operation.
  • the line card and the switch card are all optically connected.
  • the links on the same layer are directly connected through optical connections.
  • the links on different layers are connected.
  • the light backplane is connected.
  • the back of the subrack is one or more layers of vertical insertion switch cards, and the front side is all the horizontally inserted line cards.
  • the optical backplane and the switch card are overlapped in parallel, and the link between the line card and the switch card passes through the light.
  • the connectors are directly connected, and the line card and the switch card are not connected to each other through the optical backplane.
  • a two-layer subrack is taken as an example, a is the front side of the subrack, all are horizontally inserted into the line card, b is behind the subrack, and all the switch cards are vertically inserted, wherein the dotted frame is the optical backplane and is installed on the switch card. Internally, it overlaps with the switch card in parallel, c is the optical backplane, d is the line card, and e is the switch card. There are 32 line cards on the upper and lower sides of the subrack.
  • the line card has 8 optical connectors on the back side, 4 of which are connected to 4 optical backplanes, and 4 of which are directly connected to the same layer of 4 switch cards to connect the optical backplane.
  • the optical connectors and the optical connectors that connect the switch cards are placed one after the other.
  • On the switch card there are two rows of optical connectors, and one row is an optical connector of the direct connection line card at the edge of the board, which directly connects the line cards of the same layer of the switch card, for a total of 32 optical connectors;
  • the row is an optical connector that is connected to the optical backplane in the board, and connects other line cards of different layers through the optical backplane, as shown by e in FIG. 3, a total of 16 optical connectors, each of which is included in the optical connector
  • the number of optical channels is twice that of the edge optical connector.
  • the optical backplane is also designed based on two layers.
  • the optical card is connected to the line card and the switch card on both sides, and the optical signals on the optical connector of the upper connection line card are all connected to the lower layer of the connection switch card.
  • the optical signals on the optical connectors of the lower connection line card are all connected to the optical connectors of the upper layer connected to the switch card.
  • the optical backplane is approximately the entire height of the subrack and is mounted inside the switch card. When installing, connect the optical backplane and then insert the switch card to connect the switch card to the optical backplane.
  • This design can reduce the number of optical channels on the optical backplane. If it is a 3-layer subrack, it can reduce the number of optical channels by 1/3, which can simplify the design of the optical backplane and reduce the cost of the optical backplane.
  • the line card and the switch card are connected by photoelectric hybrid, and the links of the same layer are directly connected through the electrical connector (the black connector in FIG. 4), and the links of the different layers pass through the optical backplane (the optical connector is the white connection in FIG. 4). Connected.
  • the back of the subrack is one or more layers of vertical insertion switch cards, and the front side is all the horizontally inserted line cards.
  • the optical backplane and the switch card are overlapped in parallel, and the links of the line card and the switch card are electrically connected. Connectors are directly connected, line cards and intersections The card that is not in the same layer is connected through the optical backplane.
  • FIG. 5 taking a 2-layer subrack as an example, 32 line cards are placed on the upper and lower sides of the front panel.
  • the line card has 8 connectors on the back panel side, 4 optical connectors are connected to 4 optical backplanes, 4
  • the electrical connector connects four switch cards, and the optical connector that connects the optical backplane and the electrical connector that connects the switch card are placed one after another.
  • On the switch card there are two rows of connectors, one row is the electrical connector of the direct connection line card located at the edge of the board, which directly connects the line cards of the same layer of the switch card, and one row is the connected optical backplane located in the board.
  • the optical connector on the optical backplane is also designed based on two layers.
  • the optical backplane is connected to the line card and the switch card on both sides, and the optical signals on the optical connector of the upper connection line card are all connected to the optical connection of the lower connection switch card.
  • the optical signals on the optical connectors of the lower connection line card are all connected to the optical connectors of the upper layer connected to the switch card.
  • the optical backplane is the entire height of the subrack and is mounted inside the switch card. When installing, connect the optical backplane and then insert the switch card to connect the switch card to the optical backplane.
  • This design can reduce the number of optical channels on the optical backplane. If it is a 3-layer subrack, it can reduce the number of optical channels by 1/3, which can simplify the design of the optical backplane and reduce the cost of the optical backplane.
  • the electrical connection between the line card and the switch card of the same layer can ensure a certain rate of data interaction within a certain distance.
  • Both the line card and the switch card are optically connected through the optical backplane, and the optical backplane overlaps with the switch card.
  • the back of the subrack is one or more layers of vertical insertion switch cards
  • the front side is all line cards inserted horizontally
  • the optical backplane and the exchange card are overlapped in parallel
  • the line card and the exchange card are in the same layer and different layers of chains.
  • the roads are all connected by an optical backplane.
  • Fig. 7 taking a two-layer subrack as an example, 32 line cards are placed on each of the upper and lower sides, and the line card has four optical connectors on the back side, and the four optical connectors are connected to four optical backplanes.
  • the switch card which is an optical connector that is connected to the optical backplane in the board, and connects all the line cards through the optical backplane.
  • the optical backplane is also designed based on two layers.
  • the optical backplane is connected to the line card and the switch card on both sides, and the optical signal on the optical connector of the upper connection line card is connected to the optical connector of the upper and lower exchange cards.
  • the optical backplane is the entire height of the subrack and is mounted inside the switch card. When installing, connect the optical backplane and then insert the switch card to connect the switch card to the optical backplane.
  • Both the line card and the switch card are optically connected through the optical backplane, and the optical backplane is directly connected to the switch card.
  • the back of the subrack is one or more layers of vertical plug-in switch cards
  • the front side is all the horizontally inserted line cards
  • the optical backplane and the switch card are directly connected
  • the line card and the switch card are in the same layer and different layers of the chain.
  • the roads are all connected by an optical backplane.
  • Fig. 9 taking a 2-layer subrack as an example, 32 line cards are placed on each of the upper and lower layers, and the line card has 4 optical connectors on the back panel side, and the 4 optical connectors are connected to 4 optical backplanes.
  • the switch card which is an optical connector at the edge of the board that connects the optical backplane, which connects the other line cards of different layers through the optical backplane.
  • the optical backplane is also designed based on two layers.
  • the optical backplane is connected to the line card and the switch card on both sides, and the optical signal on the optical connector of the upper connection line card is connected to the optical connector of the upper and lower exchange cards.
  • the optical backplane is the entire height of the subrack and is mounted inside the switch card. When installing, connect the optical backplane and then insert the switch card to connect the switch card to the optical backplane.
  • Both the line card and the switch card are optically connected through the optical backplane, and the optical backplane overlaps with the switch card, and only one layer of the switch card is used.
  • the back of the subrack is a layer of vertical insertion switch card, and the front side is all the horizontally inserted line cards.
  • the optical backplane and the switch card are overlapped in parallel, and the links of the line card and the switch card are all connected through the optical backplane.
  • a total of 64 line cards are placed on the front side, and the line card has four optical connectors on the back side, and the four optical connectors are connected to four optical backplanes.
  • the optical backplane is also designed based on one layer. The optical connectors on both sides of the optical backplane are respectively connected to the line card and the switch card, and the optical links between the connectors on the two sides are directly point-to-point interconnected.
  • the optical backplane is the entire height of the subrack, which is installed inside the switch card, and the switch card can design the board size and height according to the capacity to be exchanged, without having to be the entire subrack height.
  • the switch card can design the board size and height according to the capacity to be exchanged, without having to be the entire subrack height.
  • the optical backplane subrack device is one or more layers of vertical insertion switch cards on one side of the subrack, and the optical backplane and the exchange card are overlapped or directly connected in parallel, and the other side of the subrack is all horizontally inserted line cards.
  • the link between the line card and the switch card is directly connected to the optical backplane or the optical backplane through the electrical connector or the optical connector.
  • the line card and the switch card are not connected to each other through the optical backplane, and the optical backplane is used to connect the line card and exchange.
  • the card enables at least one connection path between all line cards and all switch cards to realize data scheduling between any line cards, which can realize high capacity of the subrack system and increase system integration, so that the line card
  • the capacity of the switch card is not limited by the interconnection interface, and the effect of saving the subrack depth can be achieved, the convenience of the optical signal connection is improved, the cost of the system can be reduced, and the design of the system heat dissipation is not provided.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

L'invention concerne un dispositif de sous-rail de plan arrière optique, se rapportant au domaine des communications et comprenant : une couche ou une pluralité de couches de sous-rails et P plans arrières optiques, chaque couche de sous-rail comprenant M cartes de commutation et L cartes de fil ; chaque carte de commutation comprenant un ou plusieurs connecteurs optiques ou des connecteurs optiques et des connecteurs électriques, chaque carte de fil comprenant un ou plusieurs connecteurs optiques ou des connecteurs optiques et des connecteurs électriques ; chacun de deux côtés de chaque plan arrière optique comprenant un ou plusieurs connecteurs optiques ; les M cartes de commutation de chaque couche et l'ensemble des cartes de fil de différentes couches étant connectées par l'intermédiaire des connecteurs optiques sur les P plans arrières optiques, de telle sorte qu'au moins un canal de connexion optique est disposé entre l'ensemble des connecteurs optiques correspondant aux cartes de fil des sous-rails sur différentes couches et l'ensemble des connecteurs optiques correspondant aux cartes de commutation ; et la commodité pour une connexion de signal optique est améliorée.
PCT/CN2017/070172 2016-01-06 2017-01-04 Dispositif de sous-rail de plan arrière optique WO2017118388A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610013330.3 2016-01-06
CN201610013330.3A CN106954102B (zh) 2016-01-06 2016-01-06 一种光背板子架装置

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WO2017118388A1 true WO2017118388A1 (fr) 2017-07-13

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3706332A4 (fr) * 2017-11-29 2021-01-13 Huawei Technologies Co., Ltd. Système de panneau arrière optique et système d'échange, et procédé de mise à niveau associé
WO2023217033A1 (fr) * 2022-05-13 2023-11-16 华为技术有限公司 Procédé de communication optique et dispositif associé

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