CN116184652A

CN116184652A - Miniature optical switching device

Info

Publication number: CN116184652A
Application number: CN202211716502.5A
Authority: CN
Inventors: 童章伟; 钟昌锦; 杨洋; 汤科; 刘斌; 曾笑波; 鲁正; 奉慕霖
Original assignee: CETC 34 Research Institute
Current assignee: CETC 34 Research Institute
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-05-30

Abstract

The invention discloses a miniature optical switching device which comprises 1 input collimator, more than 2 output collimators, a miniature relay set and 1 control board. Each group of contact ends of the micro relay group independently work under the control of the control board, namely the control board enables the movable contact end and the static contact end of the group of contact ends to realize the attraction and separation by powering on and off the static contact end of the micro relay group, and then the movable contact end drives the refraction mirror on the movable contact end to descend and ascend, so that the light signals output by the input collimator are output from different output collimators. The invention adopts micro machinery to realize module integration, has compact structure and simple and reliable process, is beneficial to mass production and reduces cost; all optical links are free from cascade connection, and realize transmission by direct collimation, so that the insertion loss of an optical path is greatly reduced, and the insertion loss is less than or equal to 1dB, the switching time is less than or equal to 8ms and the working temperature is more than-45-85 degrees by taking 1X 8 optical exchange as an example.

Description

Miniature optical switching device

Technical Field

The invention relates to the technical field of optical switching devices, in particular to a miniature optical switching device.

Background

The 1 XN port optical switching device has one input port and N output ports, and can switch the optical signals in the input ports to any one output port, and is widely applied to optical fiber communication systems, optical fiber sensing systems and optical measuring systems. The 1 XN port optical switching device has various implementation modes, and the prior technical scheme has practical value: the motor type rotation is adopted to realize light path switching, and the technology has the characteristics of high reliability, small insertion loss, large power consumption and large volume; the second is to adopt the multi-fiber collimator, realize the light path to switch through a MEMS torsion mirror, this technological characteristic is small in size, low in power consumption, the disadvantage is with high costs, the reliability is bad; the third is based on micro-optics technology, adopts relay drive prism to realize light path switching, and this kind of technology's characteristics are small in size, low power consumption, but need multistage light path series connection, insertion loss is big.

Disclosure of Invention

The invention aims to solve the problems of the prior 1 XN port optical switching device and provides a miniature optical switching device.

In order to solve the problems, the invention is realized by the following technical scheme:

a miniature optical switching device comprises 1 input collimator, more than 2 output collimators, a miniature relay set and 1 control board; the input collimator is arranged on the left side of the control panel; all the output collimators are arranged on the right side of the control board at the same time, and an included angle exists between every 2 output collimators; the miniature relay group comprises more than 2 groups of contact ends which are transversely arranged side by side; each group of contact ends comprises a movable contact end and a static contact end; the static contact end is fixed on the control board and is electrically connected with the control board; the movable contact end is positioned right above the static contact end, and the static contact end is provided with 1 refractive mirror; each group of contact ends of the micro relay group independently work under the control of the control board, namely the control board enables the movable contact end and the static contact end of the group of contact ends to realize the attraction and separation by powering on and off the static contact end of the micro relay group, and then the movable contact end drives the refraction mirror on the movable contact end to descend and ascend, so that the light signals output by the input collimator are output from different output collimators.

In the above scheme, the input collimator and all the output collimators are at the same horizontal level.

In the scheme, the extension lines of the input collimators and all the output collimators are intersected at the same point, and the intersection point falls on the micro relay set.

In the above scheme, the number of the contact ends of the micro relay group is between 2 and 8.

In the above scheme, the refractive angles of the refractive mirrors are the same or different.

In the scheme, each group of contact ends of the miniature relay group mainly comprises a coil, an iron core, an armature and a return spring; the coil is wound in the iron core, and the coil and the iron core jointly form a static contact end of the group of contact ends; the leading-out ends of the coils form control ends of the group of contact ends; the armature is positioned right above the iron core and forms a movable contact end of the group of contact ends; one end of the return spring is connected with the iron core, and the other end of the return spring is connected with the armature.

Compared with the prior art, the invention realizes module integration by adopting micro machinery, has compact structure and simple and reliable process, is beneficial to mass production and reduces cost; all optical links are free from cascade connection, and realize transmission by direct collimation, so that the insertion loss of an optical path is greatly reduced, and the insertion loss is less than or equal to 1dB, the switching time is less than or equal to 8ms and the working temperature is more than-45-85 degrees by taking 1X 8 optical exchange as an example.

Drawings

Fig. 1 is a schematic diagram of a micro optical switching device.

Fig. 2 is a schematic structural diagram of the micro relay unit.

Reference numerals in the drawings: 1. inputting a collimator; 2. an output collimator; 3. a micro relay group; 31. a coil, 32, an iron core; 33. a return spring; 34. an armature; 4. a refractive mirror; 5. and (5) a control panel.

Detailed Description

The present invention will be further described in detail with reference to specific examples in order to make the objects, technical solutions and advantages of the present invention more apparent.

Referring to fig. 1, a micro optical switching device includes 1 input collimator 1, more than 2 output collimators 2, a micro relay group 3, and 1 control board 5.

The input collimator 1 is arranged on the left side of the control board 5. All the output collimators 2 are arranged on the right side of the control board 5 at the same time, and the included angle between every 2 output collimators 2 is equal to the refraction angle of the corresponding refraction mirror 4, namely, the output collimator 2 opposite to the input collimator 1 is taken as the first output collimator 2, so that the included angle between the second output collimator 2 adjacent to the first output collimator 2 and the first output collimator 2 is equal to the refraction angle of the first refraction mirror 4, the included angle between the third output collimator 2 adjacent to the second output collimator 2 and the third output collimator 2 is equal to the refraction angle of the second refraction mirror 4, and the like are sequentially carried out, so that the light rays output by the input collimator 1 can smoothly enter the output collimator 2 after being refracted by the refraction mirror 4. The input collimator 1 and all output collimators 2 are at the same level. In order to be able to achieve an effective deflection of the optical signal, the extension lines of the input collimator 1 and of all the output collimators 2 meet at the same point, and this intersection falls on the microrelay group 3.

The micro relay group 3 includes more than 2 groups of contact terminals arranged laterally side by side. Each group of contact ends comprises a movable contact end and a static contact end. The stationary contact end is fixed on the control board 5 and is electrically connected with the control board 5. The movable contact end is positioned right above the static contact end, and the static contact end is provided with 1 refractor 4. In the present invention, the micro relay set 3 may be formed by combining relays existing in the market, or may be a self-developed relay. In the preferred embodiment of the present invention, each contact of the micro relay unit 3 is mainly composed of a coil 31, a core 32, an armature 34 and a return spring 33, as shown in fig. 2. The coil 31 is wound inside the core 32, and the coil 31 and the core 32 together form a stationary contact of the set of contacts. The terminals of the coil 31 form the control terminals of the set of contacts. The armature 34 is located directly above the core 32, the armature 34 forming the movable contact of the set of contacts. One end of the return spring 33 is connected to the core 32, and the other end is connected to the armature 34. As long as a certain voltage is applied to the two ends of the coil 31, a certain current flows through the coil 31, so that an electromagnetic effect is generated, and the armature 34 is attracted to the iron core 32 against the pull force of the return spring 33 under the action of electromagnetic force attraction, so that the movable contact and the stationary contact of the armature 34 are driven to be attracted.

Since the main function of the refractors 4 is to deflect the optical path between the output end of the input collimator 1 and the input end of the output collimator 2, and too many refractors 4 will attenuate the optical signal greatly, and errors may occur in the deflection of the optical signal due to insufficient processing accuracy of the refractors 4, the number of refractors 4, that is, the number of contacts of the micro relay set 3, cannot be set too large, and in the preferred embodiment of the present invention, the number of contacts of the refractors 4 and the micro relay set 3 is selected to be between 2 and 8. Since the principle of the present invention is to use a combination of more than 2 refractive mirrors 4 to achieve light deflection, the number of output collimators 2 is related to the number of refractive mirrors 4 selected and the refractive angle of the refractive mirrors 4 selected. In the present invention, the refractive angles of all the refractive mirrors 4 may be the same or different. However, in order to be able to obtain more combinations of refractive angles, in the preferred embodiment of the invention, the refractive angles of all the refractive mirrors 4 are preferably different.

Each group of contact ends of the micro relay group 3 independently work under the control of the control board 5, namely the control board 5 realizes the attraction and separation of the movable contact end and the static contact end of the group of contact ends by powering on and off the static contact end of the micro relay group 3, and then the movable contact end drives the refractor 4 on the movable contact end to descend and ascend, so that the light signals output by the input collimator 1 are output from the different output collimators 2.

For easy understanding, the working process of the present invention will be described below by taking an example in which 1 input collimator 1, 4 output collimators 2, and micro relay group 3 have 2 groups of contact ends, and the refractive angle of the first refractive mirror 4 mounted on the 2 groups of contact ends is α°, and the refractive angle of the first refractive mirror 4 is β°:

when the 2 contact ends of the micro relay group 3 are in the attraction state, the 2 movable contact ends of the micro relay group 3 drive the refractors 4 on the micro relay group to descend, and at the moment, the light signals output by the input collimator 1 can not deflect when passing through the micro relay group 3, namely, the light signals output by the input collimator 1 directly skim through the 2 refractors 4 and are directly output from the output collimator 2 on the same straight line with the input collimator 1.

When the 2 contact ends of the micro relay group 3 are in a separated state, the 2 movable contact ends of the micro relay group 3 drive the refractor 4 on the micro relay group to rise, and at the moment, the optical signal output by the input collimator 1 can deflect for 2 times when passing through the micro relay group 3, namely, the optical signal output by the input collimator 1 is refracted by alpha degrees through the first refractor 4, then refracted by beta degrees through the first refractor 4, and then is output from the output collimator 2 which is different from the input collimator 1 by alpha degrees+beta degrees.

When the first group contact end of the micro relay group 3 is in a separated state and the second group contact end is in a suction state, the first movable contact end of the micro relay group 3 drives the first refractive mirror 4 thereon to ascend, the second movable contact end of the micro relay group 3 drives the first refractive mirror 4 thereon to descend, at this time, the light signal output by the input collimator 1 can deflect for 1 time when passing through the micro relay group 3, namely, the light signal output by the input collimator 1 is refracted by alpha DEG through the first refractive mirror 4, and then is directly glancing over the second refractive mirror 4 and then is output from the output collimator 2 which is different from the input collimator 1 by alpha deg.

When the first group contact end of the micro relay group 3 is in a suction state and the second group contact end is in a separation state, the first movable contact end of the micro relay group 3 drives the first refractive mirror 4 thereon to descend, the second movable contact end of the micro relay group 3 drives the second refractive mirror 4 thereon to ascend, and at the moment, the light signal output by the input collimator 1 can deflect for 1 time when passing through the micro relay group 3, namely, the light signal output by the input collimator 1 passes through the upper part of the first refractive mirror 4 directly, is refracted by beta DEG through the second refractive mirror 4, and is output from the output collimator 2 which is different from the input collimator 1 by beta deg.

It should be noted that, although the examples described above are illustrative, this is not a limitation of the present invention, and thus the present invention is not limited to the above-described specific embodiments. Other embodiments, which are apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein, are considered to be within the scope of the invention as claimed.

Claims

1. The miniature optical switching device is characterized by comprising 1 input collimator (1), more than 2 output collimators (2), a miniature relay group (3) and 1 control board (5);

the input collimator (1) is arranged on the left side of the control panel (5); all the output collimators (2) are arranged on the right side of the control board (5) at the same time, and an included angle exists between every 2 output collimators (2);

the micro relay group (3) comprises more than 2 groups of contact ends which are transversely arranged side by side; each group of contact ends comprises a movable contact end and a static contact end; the static contact end is fixed on the control board (5) and is electrically connected with the control board (5); the movable contact end is positioned right above the static contact end, and the static contact end is provided with 1 refractor (4);

each group of contact ends of the micro relay group (3) independently work under the control of the control board (5), namely the control board (5) is powered on and powered off through the static contact ends of the micro relay group (3), so that the movable contact ends and the static contact ends of the group of contact ends are attracted and separated, and further the movable contact ends drive the refraction mirror (4) on the movable contact ends to descend and ascend, and therefore the light signals output by the input collimator (1) are output from the different output collimators (2).

2. A micro optical switching device according to claim 1, characterized in that the input collimator (1) and all output collimators (2) are at the same level.

3. A miniature optical switching device according to claim 1 or 2, characterized in that the extensions of the input collimator (1) and all output collimators (2) meet at the same point and that the intersection falls on the miniature relay set (3).

4. A micro optical switching device according to claim 1, characterized in that the number of contacts of the micro relay group (3) is between 2 and 8.

5. A miniature optical switching device according to claim 1, characterized in that the refractive angles of the refractive mirrors (4) are identical or different.

6. A miniature optical switching device according to claim 1, wherein each contact of the miniature relay set (3) is mainly composed of a coil (31), an iron core (32), an armature (34) and a return spring (33); the coil (31) is wound inside the iron core (32), and the coil (31) and the iron core (32) form a static contact end of the group of contact ends together; the leading-out ends of the coils (31) form control ends of the group of contact ends; the armature iron (34) is positioned right above the iron core (32), and the armature iron (34) forms a movable contact end of the group of contact ends; one end of a return spring (33) is connected with the iron core (32), and the other end is connected with the armature (34).