CN216485642U - Optical switch and optical device - Google Patents

Abstract

The present invention relates to the field of optical communications technologies, and in particular, to an optical switch and an optical device. The optical switch includes an optical fiber module, a reflective lens module, and a stepping motor module. The optical fiber module is provided with an input port and a plurality of output ports, the input port is configured to circulate an incident optical signal, and the output ports are configured to circulate a reflected optical signal. The reflection lens module is arranged on one side close to the output port, and an incident light signal can pass through the input port and is reflected by the reflection lens module to become a reflection light signal which flows out through the output port. The stepping motor module is connected with the reflection lens module, and the stepping motor module can drive the reflection lens module to rotate at a first preset angle, so that reflected light signals reflected by the reflection lens module can enter different output ports. The optical switch has a simple structure, can reduce loss and aberration in the transmission process, is flexible and convenient for switching of the output port, and improves the stability and reliability of an optical device.

Description

Optical switch and optical device

Technical Field

The present invention relates to the field of optical communications technologies, and in particular, to an optical switch and an optical device.

Background

The optical switch is mainly used for freely switching optical signals in different directions and dimensions, is a basic product of an optical passive device, and has wide application in optical communication systems. The optical switch can control the optical signal to be switched between a plurality of optical fiber input ends and output ends, and is widely applied to optical fiber communication systems. With the intelligent development of optical fiber communication networks, the market demand of optical switches is rapidly increasing.

The optical switch is divided according to the number of ports, and has simple 1 × 2 and 2 × 2 ports, and is mainly used for protecting an optical fiber circuit and changing the optical circuit in an optical fiber communication system. The large-scale N × N port optical switch is mainly used in a switching node of an intelligent optical network, and mainly adopts a thermo-optical switch matrix or a MEMS (micro electro mechanical system) micro-mirror array. Another type of 1 × N port optical switch is mainly used in optical switching devices and systems to implement functions such as routing, wavelength selection, and self-healing protection of all-optical layers, and is a core optical device for constructing a multi-wave switching optical switch.

The current mechanical optical switch has high mass production and maintenance cost due to the optical and mechanical structure characteristics. With the expansion of the number of ports, the complexity of the system is increased correspondingly, the loss and aberration in optical transmission are more serious, and the response rate is also greatly influenced.

Therefore, it is desirable to design an optical switch and an optical device to solve the above technical problems in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an optical switch which is simple in structure, can reduce loss and aberration of incident light signals and reflected light signals in the transmission process, is flexible and convenient in output port switching, reduces cost and improves reliability of the optical switch.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the present invention provides an optical switch, including:

the optical fiber module is provided with an input port and a plurality of output ports, the input port is configured to circulate incident optical signals, and the output ports are configured to circulate reflected optical signals;

the reflecting lens module is arranged on one side close to the output port, and the incident light signal can pass through the input port and is reflected by the reflecting lens module to become the reflected light signal which flows out through the output port;

the step motor module is connected with the reflection lens module and can drive the reflection lens module to rotate at a first preset angle, so that the reflected light signals reflected by the reflection lens module can enter different output ports.

As an alternative, the fiber optic module includes a tray, the input port is disposed at a central position of the tray, and the output ports are annularly and uniformly distributed on the tray with the input port as a center.

As an alternative, the fiber optic module further includes a plurality of pigtails, the plurality of pigtails are disposed on a side of the tray away from the reflection lens module, and the plurality of pigtails are connected to the plurality of output ports, the pigtails are configured to receive the reflected optical signal.

Alternatively, the axis of the reflection lens module and the axis of the fiber optic module are parallel to each other.

As an alternative, the stepping motor module includes a rotating shaft connected to the reflection lens module such that the rotating shaft can rotate the reflection lens module.

Alternatively, the rotating shaft is connected to an axial position of the reflection lens module so that a position of the incident light signal on the reflection lens module is maintained when the reflection lens module rotates.

Alternatively, the axis of the reflective lens module is equidistant from the incident optical signal and the reflected optical signal.

As an alternative, a connecting line between two adjacent output ports and the input port forms a second preset angle, and the first preset angle is an integral multiple of the second preset angle.

As an alternative, the number of output ports is one of 8, 16, 32, 64 or 128.

Another object of the present invention is to provide an optical device that is cost effective and improves the reliability and stability of the optical device. In order to achieve the purpose, the utility model adopts the following technical scheme:

a second aspect of the utility model provides an optical device comprising an optical switch as described above.

The utility model has the beneficial effects that:

the optical switch provided by the embodiment has a simple structure, avoids adopting complex optical and mechanical structures, and greatly reduces loss and aberration in transmission. The output port is only related to the rotation angle of the stepping motor module, so that a user can flexibly change the angle of the reflected light signal by controlling the rotation angle of the stepping motor module, and meanwhile, the change of the number of the output ports can not introduce new control complexity, can not increase the maximum response time of the system, further saves the cost and improves the working efficiency.

The optical device provided by the embodiment has a simple structure, is easy to operate, and can reduce loss and aberration in the transmission process. Meanwhile, when the number of the output ports is changed, extra control complexity is not increased, so that the cost of the optical device is reduced, and the reliability and the stability of the optical device are improved.

Drawings

Fig. 1 is a schematic structural diagram of an optical switch according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a fiber optic module according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of another fiber optic module according to an embodiment of the present invention;

fig. 4 is a schematic diagram of an optical path of a reflection lens module according to an embodiment of the present invention.

Reference numerals:

1. a fiber optic module; 11. an input port; 12. an output port; 13. an incident optical signal; 14. a reflected light signal; 15. a tray; 16. tail fiber;

2. a reflective lens module; 3. a stepper motor module; 31. a rotating shaft.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

In order to solve the technical problems that in the prior art, the mechanical structure of the optical switch is complex, loss and aberration occur in the transmission process, and the output port 12 is inconvenient to switch, so that the intensity of the optical switch is reduced, as shown in fig. 1-2, the embodiment provides an optical switch, which comprises an optical fiber module 1, a reflecting lens module 2 and a stepping motor module 3. The optical fiber module 1 is provided with an input port 11 and a plurality of output ports 12, wherein the input port 11 is configured to circulate an incident optical signal 13, and the output ports 12 are configured to circulate a reflected optical signal 14. The reflection lens module 2 is disposed on a side close to the output port 12, and the incident light signal 13 can be reflected by the reflection lens module 2 through the input port 11 to become a reflected light signal 14 and flow out through the output port 12. The stepping motor module 3 is connected to the reflection lens module 2, and the stepping motor module 3 can drive the reflection lens module 2 to rotate at a first preset angle, so that the reflected light signal 14 reflected by the reflection lens module 2 can enter different output ports 12.

Further, the number of output ports 12 on the fiber optic module 1 may be set to one of 8, 16, 32, 64, or 128. Of course, the user may also set other number of output ports 12 according to actual requirements, which is not described herein again, the number of input ports 11 is set to be one, and the input ports 11 are set at the central position of the optical fiber module 1.

The incident light signal 13 enters the reflection lens module 2 through the input port 11, and is reflected by the reflection lens module 2 to form a reflected light signal 14, and the reflected light signal 14 enters the output port 12, and is then received by an external receiver. When the stepping motor module 3 drives the reflection lens module 2 to rotate, the position of the incident light signal 13 relative to the reflection lens module 2 is unchanged, and the reflected light signal 14 can enter different output ports 12 along with the rotation of the reflection lens module 2, so that a user can control the rotation angle of the stepping motor module 3 to achieve the purpose of randomly appointing the output port 12 and switching the output port 12, the flexibility of outputting the reflected light signal 14 is improved, the switching of the output port 12 of the optical switch is more convenient, and the working efficiency is improved.

Further, the axis of the reflection lens module 2 and the axis of the fiber optic module 1 are parallel to each other. As can be seen from the geometrical features and optical characteristics of the reflection lens module 2, the incident light signal 13 and the reflected light signal 14 are parallel and opposite to each other. After an incident light signal 13 is incident through the input port 11, it is refracted twice and reflected three times again by the reflection lens module 2, and then it is emitted in parallel and reversely and received by an output port 12. Meanwhile, the stepping motor module 3 can change the rotation direction, and the switching path and the time T required for switching from one output port 12 to another output port 12 which is symmetrical to the output port about the axis of the optical fiber module are the longest, and the time T can be defined as the maximum response time of the whole light switch. The time T for switching to the adjacent output port 12 is the shortest, and theoretically T is (N/2-1) × T.

Compared with the prior art, the optical switch provided by the embodiment has a simple structure, avoids adopting complex optical and mechanical structures, and greatly reduces loss and aberration in transmission. The output port 12 is only related to the rotation angle of the stepping motor module 3, so that a user can flexibly change the angle of the reflected light signal 14 by controlling the rotation angle of the stepping motor module 3, and meanwhile, the change of the number of the output ports 12 does not introduce new control complexity, does not increase the maximum response time of the system, further saves the cost and improves the working efficiency.

As shown in fig. 1, in the present embodiment, the fiber optic module 1 includes a tray 15 and a plurality of pigtails 16, the input port 11 is disposed at a central position of the tray 15, and the output ports 12 are annularly and uniformly distributed on the tray 15 around the input port 11. A plurality of pigtails 16 are arranged at a side of the tray 15 facing away from the reflection lens module 2, and the plurality of pigtails 16 are connected to the plurality of output ports 12, the pigtails 16 being configured to receive the reflected optical signal 14.

Preferably, the number of the output ports 12 in this embodiment is 64, that is, 64 output ports 12 are uniformly distributed on the tray 15 in a ring shape, and the angle between two adjacent output ports 12 is 5.625 °.

Further, the tray 15 is used for mounting the input port 11 and the plurality of output ports 12, and can improve stability and reliability of the input port 11 and the output ports 12, thereby ensuring efficiency of the incident optical signal 13 and the reflected optical signal 14 in the transmission process. It is noted that the radius of the tray 15 is larger than the distance between the incident optical signal 13 and the reflected optical signal 14, so that the tray 15 can accommodate a plurality of output ports 12. One end of the pigtail 16 is connected to the output port 12 in this embodiment, and the other end is welded to the optical fiber device, so that the pigtail 16 can accurately feed back the reflected optical signal 14 to the optical fiber device in time, and the working efficiency is improved.

Preferably, as shown in fig. 3, in order to improve convenience of actual operation and reduce difficulty of actual operation, the output port 12 may be set in a non-closed state.

As shown in fig. 1, in the present embodiment, the stepping motor module 3 includes a rotating shaft 31, and the rotating shaft 31 is connected to the reflection lens module 2 so that the rotating shaft 31 can rotate the reflection lens module 2. The rotary shaft 31 is connected to the axial position of the reflection lens module 2 so that the position of the incident light signal 13 on the reflection lens module 2 is kept constant when the reflection lens module 2 rotates. Therefore, the stability and reliability of the light opening can be further improved, the accuracy of the output port 12 for receiving the reflected light signal 14 is improved, and the decrease of the accuracy of the output port 12 for receiving the reflected light signal 14 due to the fluctuation of the incident light signal 13 is avoided.

As shown in fig. 1, in this embodiment, the distance between the axis of the reflection lens module 2 and the incident light signal 13 is equal to the distance between the axis of the reflection lens module 2 and the reflected light signal 14, that is, the axis of the reflection lens module 2 is located on the perpendicular bisector of the connecting line between the incident light signal 13 and the reflected light signal 14, so as to improve the working efficiency of the optical switch for receiving the reflected light signal 14, and further improve the stability and reliability of the optical switch.

Preferably, as shown in fig. 1, in the present embodiment, a connecting line between two adjacent output ports 12 and the input port 11 forms a second preset angle, and the first preset angle is an integer multiple of the second preset angle. Thus, when the stepping motor module 3 rotates, the position of the incident point of the incident light signal 13 on the refraction surface of the reflection lens module 2 is always fixed, and the position of the emergent point rotates around the axis of the optical fiber module 1, so that each output port 12 can be covered, and the accuracy of the output port 12 for receiving the reflected light signal 14 is improved.

Preferably, as shown in fig. 4, the size of the reflection lens module 2 has a positive correlation with the number of the output ports 12. As the number of output ports 12 grows, the tray 15 on the fiber optic module 1 must provide enough radius to accommodate more output ports 12. Accordingly, the parameters such as the aperture of the reflection lens module 2 must be increased accordingly to match the output port 12 of the optical fiber module 1.

A second aspect of the utility model provides an optical device comprising an optical switch as described above. The optical device has simple structure and easy operation, and can reduce loss and aberration in the transmission process. Meanwhile, when the number of the output ports 12 is changed, additional control complexity is not increased, so that the cost of the optical device is reduced, and the reliability and the stability of the optical device are improved.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. An optical switch, comprising:

the optical fiber module (1) is provided with an input port (11) and a plurality of output ports (12), wherein the input port (11) is configured to circulate an incident optical signal (13), and the output ports (12) are configured to circulate a reflected optical signal (14);

the reflection lens module (2) is arranged on one side close to the output port (12), and the incident light signal (13) can pass through the input port (11), is reflected by the reflection lens module (2) and then flows out as the reflected light signal (14) through the output port (12);

step motor module (3), step motor module (3) with reflection lens module (2) are connected, step motor module (3) can drive reflection lens module (2) are rotatory with first preset angle to make by after reflection lens module (2) reflection reflected light signal (14) can enter into different output port (12).

2. The optical switch according to claim 1, wherein the fiber optic module (1) comprises a tray (15), the input port (11) is disposed at a central position of the tray (15), and the output ports (12) are annularly and uniformly distributed on the tray (15) around the input port (11).

3. An optical switch according to claim 2, characterized in that the fiber optic module (1) further comprises a plurality of pigtails (16), the plurality of pigtails (16) being arranged at a side of the tray (15) facing away from the reflection lens module (2), and the plurality of pigtails (16) being connected with the plurality of output ports (12), the pigtails (16) being configured to receive the reflected optical signal (14).

4. An optical switch according to claim 1, characterized in that the axis of the reflection lens module (2) and the axis of the fiber optic module (1) are parallel to each other.

5. An optical switch according to claim 4, characterized in that the stepping motor module (3) comprises a rotation shaft (31), the rotation shaft (31) being connected to the reflection lens module (2) such that the rotation shaft (31) when rotated can bring the reflection lens module (2) to rotate.

6. An optical switch according to claim 5, characterized in that the rotation axis (31) is connected to the axial position of the reflection lens module (2) such that the position of the incident optical signal (13) on the reflection lens module (2) remains unchanged when the reflection lens module (2) is rotated.

7. An optical switch according to claim 6, characterized in that the axis of the reflection lens module (2) is equidistant from the incident optical signal (13) and the reflected optical signal (14).

8. An optical switch according to claim 1, wherein a line connecting two adjacent output ports (12) and the input port (11) is at a second predetermined angle, and the first predetermined angle is an integer multiple of the second predetermined angle.

9. An optical switch according to claim 1, characterized in that the number of output ports (12) is one of 8, 16, 32, 64 or 128.

10. An optical device comprising an optical switch according to any one of claims 1 to 9.

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