WO2011088786A1

WO2011088786A1 - Optical communication system and optical connector

Info

Publication number: WO2011088786A1
Application number: PCT/CN2011/070382
Authority: WO
Inventors: 刘炜霞; 向少勇; 贾功贤; 焦建宇; 曹曦; 金曦; 王保启
Original assignee: 华为技术有限公司
Priority date: 2010-01-21
Filing date: 2011-01-19
Publication date: 2011-07-28
Also published as: CN101750679B; CN101750679A

Abstract

An optical communication system comprises a backboard (301), at least two single boards (302, 303), and at least two optical connectors (305, 306). The backboard and the single boards are respectively provided with an optical transmission layer (304) for transmitting the optical signal. The optical connector is provided with a first reflecting surface (307, 309) and a second reflecting surface (308, 310) which are arranged back to back. The first and second reflecting surfaces are used for turning light paths so as to enable the optical transmission layers in the single boards and the optical transmission layer in the backboard to realize optical connection.

Description

...1... a letter system and optical connector

The present invention relates to the field of optical communications, and in particular, to an optical communication system and an optical connector.

Background technique

In the optical backplane system of the prior art, in order to establish an optical interconnection channel between different boards, the cooperation mode shown in FIG. 1 is adopted between the single board and the back board, that is, the same connector is used, but as shown in FIG. 2 As can be seen from the top view, depending on the direction of the optical path interconnection, a long arc of traces is required on the backplane to achieve optical coupling with the connector.

In the process of implementing the present invention, the inventors have found that the prior art has at least the following disadvantages: In the prior art, a long arc-shaped trace is required on the backplane, and the curved waveguide increases the transmission of optical signals. Losses may also cause line crossings due to insufficient wiring space, causing additional losses.

Summary of the invention

Embodiments of the present invention provide an optical communication system and an optical connector capable of reducing transmission loss of an optical signal.

The optical communication system provided by the embodiment of the present invention includes: a backplane, at least two boards, and at least two optical connectors; wherein the backplane and the board are respectively provided with optical transmission layers for transmitting optical signals; a first reflective surface and a second reflective surface are disposed in the optical connector; the first reflective surface and the second reflective surface are disposed opposite to each other, and the first reflective surface and the second reflective surface are used for turning the optical path, so that The optical transmission layer in the single board is optically connected to the optical transmission layer of the backplane; the different single boards are optically communicated through the opposite two reflective surfaces of the different optical connectors and the optical transmission layer of the backplane.

The optical connector provided by the embodiment of the present invention includes: a first reflective surface and a second reflective surface; the first reflective surface and the second reflective surface are disposed opposite to each other, and the first reflective surface and the second reflective surface are used The optical path is turned, so that the optical transmission layer in the single board and the optical transmission layer of the back board are optically connected.

As can be seen from the above technical solutions, the embodiments of the present invention have the following advantages:

In the embodiment of the present invention, the optical connectors include two reflective surfaces disposed opposite each other. When two boards need to communicate optically through the backplane, only the optical transmission layers of the two boards are aligned. The opposite reflection surfaces of the two optical connectors can realize the linear transmission of the optical path, and there is no need to provide a trace with a curvature, thereby reducing the transmission loss of the optical signal; Secondly, the optical connector includes two reflective surfaces disposed opposite to each other. When a single board needs to communicate with different boards, only the optical connector of the optical transmission layer of the single board needs to be adjusted. The reflective surface can be used without the need to replace the new optical connector, thus improving the flexibility of optical communication.

DRAWINGS

1 is a schematic diagram of optical communication in the prior art;

2 is a top view of a backplane in the prior art;

3 is a schematic diagram of an optical communication system according to an embodiment of the present invention;

4 is a schematic diagram of a multi-optical transmission layer according to an embodiment of the present invention;

FIG. 5 is a schematic view of a curved mirror according to an embodiment of the present invention; FIG.

6 is a schematic diagram of an application scenario of an optical communication system according to an embodiment of the present invention;

7 is a schematic diagram of an application scenario 2 of an optical communication system according to an embodiment of the present invention;

8 is a schematic diagram of an application scenario of a multi-optical optical communication system according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of an embodiment of an optical connector according to an embodiment of the present invention; FIG.

FIG. 10 is a schematic diagram of another embodiment of an optical connector according to an embodiment of the present invention; FIG.

FIG. 11 is a schematic diagram of still another embodiment of an optical connector according to an embodiment of the present invention; FIG.

12(a) to 12(b) are schematic views showing the movement of the reflecting surface assembly in the optical connector in the embodiment of the present invention.

detailed description

Embodiments of the present invention provide an optical communication system and an optical connector capable of using the same type of optical connector to reduce device cost while reducing transmission loss of optical signals.

Referring to FIG. 3, an embodiment of an optical communication system in an embodiment of the present invention includes:

The backplane 301, the at least two boards 302 and 303, the at least two optical connectors 305 and 306, the backplane 301, the board 302, and the board 303 are respectively provided with optical transmission layers for transmitting optical signals.

304;

A first reflective surface and a second reflective surface are disposed in the optical connector, that is, the optical connector 305 is provided with a first reflective surface 307 and a second reflective surface 308, and the optical connector 306 is provided with a first reflective surface 309. And a second reflecting surface 310;

Taking the optical connector 305 as an example, the first reflective surface 307 and the second reflective surface 308 are disposed opposite to each other, and the first reflective surface 307 and the second reflective surface 308 are used for turning the optical path to make the light in the single board 302 The transmission layer 304 and the optical transmission layer 304 of the backplane 301 are optically connected; The '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' The second reflective surface 308 of the optical connector 305, and the first reflective surface 309 of the optical connector 306, and the optical transmission layer 304 of the backplane 301 are in optical communication with the single board 303.

The second reflective surface 308 of the optical connector 305 and the first reflective surface of the optical connector 306

309 is a relative reflecting surface, and the optical signal can be transmitted through the two reflecting surfaces.

In this embodiment, only two boards and two optical connectors are used for description. In practical applications, more boards and optical connectors can be connected to the backplane, and light is transmitted between different boards. The process of communication is similar to the optical communication process described above, and will not be described herein.

In this embodiment, the optical transmission layer 304 in the backplane 301 may be a double layer or a multi-layer structure. As shown in FIG. 4, the optical transmission layer 304 in the single board 302 and the single board 303 may also be Double or multi-layer structure.

The optical transmission layer 304 can be located on the surface or inner layer of the backplane 301 (or the single board 302, or the single board 303).

It should be noted that the reflective surface in the embodiment (including the first reflective surface of the optical connector 305)

307, the second reflective surface 308 and the first reflective surface 309 of the optical connector 306, the second reflective surface 310) may be one or a group of mirrors, which may be a planar mirror in practical applications, or may be The curved mirror (as shown in FIG. 5), as long as the mirror can make the optical path turn 90 degrees, the specific implementation is not limited herein.

It should be noted that, in this embodiment and subsequent embodiments, the specific optical transmission layer may be an optical waveguide layer, or an optical fiber, or other types of optical transmission media.

In this embodiment, the optical connector includes two reflective surfaces disposed opposite to each other. When two boards need to communicate optically through the backplane, only the optical transmission layers of the two boards are aligned. The opposite reflection surfaces of the two optical connectors can realize the linear transmission of the optical path, and there is no need to provide a trace with a curvature, thereby reducing the transmission loss of the optical signal.

Further, the optical connector includes two reflective surfaces disposed opposite to each other. When a single board needs to communicate with different boards, only the optical connection of the optical transmission layer of the single board needs to be adjusted. The reflective surface of the device can be used without the need to replace the new optical connector, thus improving the flexibility of optical communication.

Further, the structure of each optical connector can be the same, and if the same type of optical connector is used, the device cost and assembly complexity can be reduced. ―^.― For ease of understanding, the optical communication system in the embodiment of the present invention is described in the following specific application scenarios. Referring to FIG. 6, the board A, the board B, and the board C are respectively connected to the optical connector A, The optical connector B and the optical connector C are mated.

The optical transmission layer of the board A is connected to the left interface of the optical connector A. The interface is opposite to the left side of the optical connector A. The optical transmission layer of the board B is connected to the right interface of the optical connector B. The right side of the optical connector B is opposite to the reflective surface of the optical connector C, and the optical interface of the optical connector C is connected to the left side of the optical connector C.

At this time, the board A and the board B on the left side can establish an optical path through the right side reflecting surface of the optical connector B and the left side reflecting surface of the optical connector A, thereby realizing the relationship between the board A and the board B. Optical signal transmission.

Referring to FIG. 7, when the board A needs to communicate with the board C, the optical transmission layer of the board A can be connected to the right interface of the optical connector A, and the interface is opposite to the right side reflecting surface of the optical connector A. At this time, the board A and the board C on the right side can establish an optical path through the right side reflecting surface of the optical connector A and the left side reflecting surface of the optical connector C, thereby realizing the board A and the board C. Optical signal transmission between.

It should be noted that, in an actual application, the reflective surface on the optical connector A corresponding to the single board A can be adjusted in various manners. For example, the first interface and the second interface can be disposed on the optical connector A, where The first interface is located above the first reflective surface of the optical connector A (which may be the left reflective surface), and the second interface is located above the second reflective surface of the optical connector A (which may be the reflective surface on the right side) when needed When using different reflection surfaces of the optical connector A, adjust the interface of the optical connector A to which the board A is connected.

In the above-mentioned manner, the interface of the optical connector to which the single board is connected can be adjusted to adjust the different reflective surfaces of the optical connector to achieve the purpose of adjusting the optical path. In practical applications, the optical communication system is constructed. In addition to adjusting the position of the board, you can adjust the position of the optical connector according to the preset communication requirements:

When the optical connector is connected to the backplane, the relative position of the optical connector on the backplane can be adjusted according to the preset communication requirements, so that one of the reflective surfaces of the optical connector is aligned with the optical transmission layer of the single board. Referring to FIG. 6 and FIG. 7, FIG. 6 and FIG. 7 are two types of optical communication systems. The specific communication directions of the two optical communication systems are different. When constructing the two optical communication systems, the board A is The position relative to the backplane has not changed, but only the relative position of the optical connector A on the backboard is adjusted. The position allows the board A to use different interfaces of the optical connector A to construct different optical communication systems.

In addition, only one interface can be disposed on the optical connector A, and the board A is connected to the interface. In the optical connector A, the first reflecting surface (which can be the left reflecting surface) and the second reflecting surface (may be The reflecting surface component composed of the reflecting surface on the right side is a movable structure, which can move left and right in the optical connector A. When the reflecting surface component moves to the right side, the first reflecting surface is opposite to the interface, when the reflection When the surface component is moved to the left side, the second reflective surface is opposite to the interface, so that the reflective surface corresponding to the single board A can be adjusted by moving the reflective surface component.

It should be noted that there are more ways to adjust the reflective surface corresponding to the board A in the actual application, and the specific manner is not limited herein.

The solution in this embodiment is also applicable to a case where a plurality of optical ports are provided between a single board and a back board (that is, a plurality of optical ports on a single board can be optically communicated with multiple other boards at the same time) The flexible optical interconnection between the board and the boards on both sides can be realized by adjusting the relative positional relationship between the connector and the optical interface of the board. As shown in Figure 8, the board in the middle of Figure 8 has Three optical ports can be connected to three optical connectors at the same time, and simultaneously communicate with the boards on the left and right sides.

It is to be understood that the multi-optical port interconnection scheme described in FIG. 8 is only an example. In practical applications, there may be more types of multi-optical port interconnection schemes, which are not limited herein.

Still further, the structure of each optical connector can be the same, and if the same type of optical connector is used, the device cost and assembly complexity can be reduced.

Furthermore, the solution of this embodiment can also be applied to a multi-optical port interconnection scheme, so that the flexibility of optical communication can be further improved.

The optical connector in the embodiment of the present invention is described below. Referring to FIG. 9, an embodiment of the optical connector in the embodiment of the present invention includes: —— g—first reflective surface 901 and second reflective surface 902;

The first reflective surface 901 and the second reflective surface 902 are disposed opposite to each other. The first reflective surface 901 and the second reflective surface 902 are used for turning the optical path, so that the optical transmission layer in the single board and the optical transmission layer of the backplane realize light. connection.

The first reflecting surface 901 in this embodiment is one or a group of mirrors, and the second reflecting surface 902 is one or a group of mirrors.

The mirror in this embodiment is a plane mirror or a curved mirror (specifically, as shown in FIG. 5 above). In this embodiment, the optical connectors include two reflective surfaces (a first reflective surface 901 and a second reflective surface 902) disposed opposite each other. When two boards need to communicate optically through the backplane, The optical transmission layer of the two boards can be aligned with the opposite reflection surfaces of the two optical connectors to realize the linear transmission of the optical path, and the arc-shaped wiring is not required, so that the transmission loss of the optical signal can be reduced.

The optical connector in this embodiment can have various structures in practical applications. The following is an example of two embodiments. Referring to FIG. 10, another embodiment of the optical connector in this embodiment includes:

The first reflecting surface 1001, the second reflecting surface 1002, the first interface 1003, and the second interface 1004; the first reflecting surface 1001 and the second reflecting surface 1002 are disposed opposite to each other, and the first reflecting surface 1001 and the second reflecting surface 1002 are used for Turning the optical path to make the optical transmission layer in the single board and the optical transmission layer of the back plate optically connected;

The first interface 1003 is located above the first reflective surface 1001, and the second interface 1004 is located above the second reflective surface 1002;

The optical transmission layer of the board may be connected to the first interface 1003 or to the second interface 1004 to perform optical communication using different reflective surfaces.

Referring to FIG. 11, still another embodiment of the optical connector in this embodiment includes:

Reflecting surface assembly 1102 and interface 1101;

The reflective surface assembly 1102 is composed of a first reflective surface and a second reflective surface disposed opposite each other; the reflective surface assembly 1102 is a movable structure, and the reflective surface assembly 1102 can be moved under the interface 1101 such that the first reflective surface is aligned with the interface. 1101, or aligning the second reflective surface with the interface 1102 such that the optical transmission layer of the single board can be optically communicated through the interface 1101 using different reflective surfaces.

For ease of understanding, referring to FIG. 12( a ), when the reflective surface component 1102 is moved to the left side, the right reflective surface of the optical connector is opposite to the interface 1101, and the optical transmission layer of the single board can be optically connected. The right side of the reflector, see Figure 12 (b), when the reflector assembly 1102 moves to the right When the left side reflective surface of the optical connector is opposite to the interface 1101, the optical transmission layer of the single board can use the left side reflection surface of the optical connector. Therefore, the light transmission of the single board can be performed by moving the reflective surface unit 1102. The layers use different reflective surfaces for optical communication.

The optical communication system and the optical connector provided by the present invention are described in detail above. For those skilled in the art, according to the idea of the embodiment of the present invention, there are changes in the specific implementation manner and application scope. Therefore, the content of the specification should not be construed as limiting the invention.

Claims

O Claims

An optical communication system, comprising:

a backboard, at least two veneers and at least two optical connectors;

An optical transmission layer for transmitting an optical signal is respectively disposed in the backboard and the single board;

The optical connector is provided with a first reflective surface and a second reflective surface;

The first reflective surface and the second reflective surface are disposed opposite to each other, and the first reflective surface and the second reflective surface are used for turning the optical path, so that the optical transmission layer in the single board and the optical transmission layer of the backboard Achieve optical connection;

Different boards are optically communicated through the opposite two reflective surfaces of the different optical connectors and the optical transmission layer of the backplane.

2. The optical communication system according to claim 1, wherein

The first reflective surface is a mirror or a set of mirrors, and the second reflective surface is a mirror or a set of mirrors.

3. The optical communication system according to claim 2, wherein the mirror is a plane mirror or a curved mirror.

The optical communication system according to any one of claims 1 to 3, wherein the optical connector comprises a first interface and a second interface, and the first interface or the second interface between the single board and the optical connector Interface connection

The first interface is located above the first reflective surface, and the second interface is located above the second reflective surface.

5. An optical communication system according to claim 4 or claim, wherein

The optical connector or the board can adjust the relative position with the backboard according to preset communication requirements, so that the board uses the first interface and the first reflective surface for optical communication, or uses the second interface and the second reflective surface. Optical Communication.

The optical communication system according to any one of claims 1 to 3, wherein the optical connector comprises an interface, and an interface between the single board and the optical connector is connected;

The reflective surface component composed of the first reflective surface and the second reflective surface is a movable structure, and the reflective surface component is movable under the interface such that the first reflective surface is aligned with the interface, or the second reflective surface is Align the interface.

The optical communication system according to claim 1, wherein the backboard and the single board are The number of optical transmission layers is one or more layers, and the optical transmission layer includes one or more optical transmission channels.

8. The optical communication system according to claim 1, wherein the optical transmission layer is located on a surface layer or an inner layer of the single board or the back board.

9. An optical connector, comprising:

a first reflecting surface and a second reflecting surface;

The first reflective surface and the second reflective surface are disposed opposite to each other, and the first reflective surface and the second reflective surface are used for turning the optical path, so that the optical transmission layer in the single board and the optical transmission layer of the backplane realize light. connection.

10. The optical connector of claim 9 wherein:

The optical connector according to claim 10, wherein the mirror is a plane mirror or a curved mirror.