CN113376752B - Locking Optical Switch - Google Patents

Abstract

The present application relates to a locking type optical switch, which includes an optical path conversion component and a switch driving component. The optical path conversion assembly includes a first light guide member and a second light guide member, the first light guide member has opposite first and second end faces, and the second light guide member has opposite third end faces and The fourth end face, the second end face and the third end face are opposite to and adjacent to each other. The switch driving assembly includes a first driving member and a second driving member, the second driving member is arranged on the second light guide member, and the first driving member is used to drive the second driving member to move and drive the first driving member. The second light guide member moves between the initial position and the target position. When the second light guide member is at the initial position and the target position, the second end face of the first light guide member and the third end face of the second light guide member There are gaps in between. The optical path is switched by the optical path conversion component and the switch driving component, which has the advantage of saving space.

Description

Locking Optical Switch

technical field

The present application relates to the technical field of optical communication, and in particular, to a locking type optical switch.

Background technique

As an important device for optical link switching, optical switch plays an irreplaceable role in the field of optical communication. Traditional optical switches are usually divided into mechanical optical switches, acousto-optic modulated optical switches, electro-optical modulated optical switches, and micro-precision mechanical optical switches. In addition to mechanical optical switches, other types of optical switches lack cost performance and competitiveness due to their high cost, especially when the number of channel switching is small and the switching speed is not required. Therefore, mechanical optical switches occupy the vast majority. market.

The traditional mechanical optical switch mainly controls the optical path through the relay, and fixes the optical components (refractive prism, plane mirror, etc.) of the optical path of the optical switch on the armature part of the ordinary relay through extension and transformation, and uses the armature to switch during the working process of the relay. Movement, and change the optical path transmission, so as to achieve optical path switching. In the optical switch of this traditional structure, the optical paths of the relays and the optical elements are arranged in a mutually perpendicular space to form a T-shaped structure, which occupies a large space during use and is difficult to lay out the optical structure and the optical path. In addition, because the traditional mechanical optical switch is mainly extended and transformed on the traditional relay armature arm, and optical components are added to achieve the effect of optical path switching, the optimal working load state of the relay is destroyed, and there is a long switching response time and failure rate. The defects of high reliability and poor reliability, the existence of mechanical contacts in the relay, also makes the mechanical optical switch have the problem of short service life.

With the development of optical communication technology, the miniaturization and integration of all optical communication devices have become the development trend of various device replacements. Traditional mechanical optical switches are more and more used due to their relatively large size and waste of space due to their structural shapes. Constrained by conditions, it cannot meet the needs of the market.

SUMMARY OF THE INVENTION

The purpose of the present application is to provide a lock-type optical switch, which includes an optical path conversion component and a switch driving component, and the optical path switching of the lock-type optical switch can be performed by driving the light-path conversion component through the switch drive component, thereby overcoming the existing lock-type optical switch T. The problem that the glyph structure takes up a lot of space.

In order to achieve the above object, the application adopts the following technical solutions:

A locking type optical switch, comprising: an optical path conversion component and a switch driving component;

The optical path conversion assembly includes a first light guide member and a second light guide member, the first light guide member has opposite first and second end faces, and the second light guide member has opposite third end faces and The fourth end face, the second end face and the third end face are opposite to each other and are arranged adjacent to each other, when there is a gap between the second end face and the third end face, the light beam in the first light guide is in the second end face. After being deflected at the end face, it enters the second light guide member through the third end face, or the light beam in the second light guide member enters the first light guide member through the second end face after being deflected at the third end face;

The switch driving assembly includes a first driving member and a second driving member, the second driving member is disposed on the second light guide member, and the first driving member is used for driving the second driving member to move and Drive the second light guide to move between the initial position and the target position. When the second light guide is at the initial position and the target position, the second end face of the first light guide and the second light guide There are gaps of different sizes between the third end faces.

Preferably, the second end face of the first light guide member and the third end face of the second light guide member are respectively wedge-shaped surfaces, and the second end face of the first light guide member and the third end face of the second light guide member During the bonding, the light beam in the first light guide member passes through the second end face and the third end face without being deflected and enters the second light guide member, or the light beam in the second light guide member passes through the third end face and the third end face. The second end face is not deflected and enters the first light guide.

Preferably, there is a magnetic force between the first driving member and the second driving member.

Preferably, the locking type optical switch further includes a sleeve assembly, the sleeve assembly includes a light guide sleeve and a driver sleeve, the second end face of the first light guide and the second light guide The third end face of the light guide is accommodated in the light guide sleeve, the fourth end face of the second light guide is located outside the light guide sleeve, and the second light guide and the light guide sleeve are gap fit ; the drive part sleeve is connected to the light guide part sleeve, the second drive part is located in the drive part sleeve, and the first drive part is arranged on the light guide part sleeve.

Preferably, the first driving member is an electromagnet sleeved outside the casing of the light guide member, and the second driving member is a permanent magnet.

Preferably, the electromagnet of the first driving member includes an electromagnetic coil and an iron core, the iron core is sleeved outside the casing of the light guide member, and the electromagnetic coil is sleeved outside the iron core, when the electromagnetic coil changes The direction of the electromagnetic field of the first driving member changes simultaneously when the direction of the power is turned on.

Preferably, the driver sleeve is a magnetic conductive sleeve.

Preferably, the light guide sleeve is provided with a first positioning portion, the second light guide is provided with a second positioning portion, and the first positioning portion and the second positioning portion cooperate to When the second light guide member moves, the second light guide member is guided to move in a predetermined direction.

Preferably, the first positioning portion is a guide groove or a guide hole provided on the light guide sleeve, and the second positioning portion is a flat key provided on the second light guide.

Preferably, the light guide sleeve is provided with an air guide hole located between the second end face and the third end face.

Preferably, the locking optical switch further includes an optical path input and output device, the optical path input and output device includes a first optical fiber, a second optical fiber and a converging lens, and the first optical fiber is arranged on the first optical fiber of the first light guide member. One end face, the second optical fiber is arranged on the fourth end face of the second light guide member, and the converging lens is arranged between the optical fiber head of the first optical fiber and the first end face of the first light guide member, so The light beam of the optical fiber head of the first optical fiber is condensed onto the end face of the optical fiber head of the second optical fiber after passing through the converging lens, the first light guide member and the second light guide member.

Preferably, the first optical fiber is a single-fiber optical fiber head, and the second optical fiber is a dual-fiber optical fiber head.

Preferably, during the operation of the second light guide member, there is always a gap between the second end face of the first light guide member and the third end face of the second light guide member.

Compared with the prior art, the beneficial effects of the present application at least include:

A locking type optical switch including an optical path conversion component and a switch driving component of the present application can realize the optical path switching of the locking type optical switch by driving the optical path conversion component by the switch driving component. The above structure has the advantage of saving the space of the optical switch and can realize locking The effect of the overall miniaturization of the type optical switch.

Description of drawings

The present application will be further described below with reference to the accompanying drawings and embodiments.

1 is a schematic structural diagram of a locking optical switch provided by an embodiment of the present application;

2 is a schematic structural diagram of the locking optical switch of FIG. 1 in another working state;

3 is a schematic structural diagram of another lock-type optical switch provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of the optical path of the switch case (1) of the lock-type optical switch provided by the embodiment of the present application;

5 is a schematic diagram of the light beam inputting the first optical fiber in the switching situation (1) of the locking optical switch provided by the embodiment of the present application;

6 is a schematic diagram of a light beam outputting a second optical fiber in the switching situation (1) of the locking optical switch provided by the embodiment of the present application;

FIG. 7 is a schematic diagram of the optical path of the switch case (2) of the lock-type optical switch provided by the embodiment of the present application;

8 is a schematic diagram of the light beam inputting the first optical fiber in the switching situation (2) of the locking optical switch provided by the embodiment of the present application;

9 is a schematic diagram of the light beam outputting the second optical fiber in the switching situation (2) of the locking optical switch provided by the embodiment of the present application;

FIG. 10 is a schematic diagram of the optical path of the switch case (3) of the lock-type optical switch provided by the embodiment of the present application;

11 is a schematic diagram of the light beam inputting the first optical fiber in the switching situation (3) of the locking optical switch provided by the embodiment of the present application;

12 is a schematic diagram of the light beam outputting the second optical fiber in the switching situation (3) of the locking optical switch provided by the embodiment of the present application;

FIG. 13 is a schematic diagram of the optical path of the switch case (4) of the locking optical switch provided by the embodiment of the present application;

14 is a schematic diagram of the light beam inputting the first optical fiber in the switching situation (4) of the locking optical switch provided by the embodiment of the present application;

FIG. 15 is a schematic diagram of the light beam outputting the second optical fiber in the switching situation (4) of the locking optical switch provided by the embodiment of the present application.

Icon:

1. Optical path conversion assembly; 11. First light guide; 12. Second light guide; 111, first end face; 112, second end face; 113, third end face; 114, fourth end face;

2. Switch drive assembly; 21. First drive member; 22, Second drive member; 211, Electromagnetic coil; 212, Iron core;

3. Sleeve assembly; 31. Light guide sleeve; 32. Drive sleeve;

41, the first optical fiber; 42, the second optical fiber; 43, the converging lens; 411, the first optical fiber head; 421, the second optical fiber head; 422, the third optical fiber head.

Detailed ways

Hereinafter, the present application will be further described with reference to the accompanying drawings and specific embodiments. It should be noted that, on the premise of no conflict, the embodiments or technical features described below can be arbitrarily combined to form new embodiments. .

As shown in FIG. 1 and FIG. 2 , the present application relates to a locking type optical switch, which includes an optical path conversion assembly 1 and a switch driving assembly 2 . The locking type optical switch shown in FIGS. 1 and 2 may be a locking type free space optical switch.

The optical path conversion assembly 1 includes a first light guide member 11 and a second light guide member 12 , the first light guide member 11 has a first end face 111 and a second end face 112 opposite to each other, and the second light guide member 12 Having opposite third end faces 113 and fourth end faces 114 , the second end faces 112 and the third end faces 113 are opposite to each other and disposed adjacent to each other. That is to say, when there is a gap between the second end surface 112 and the third end surface 113 , the light beam in the first light guide member 11 enters the second guide through the third end surface 113 after being deflected at the second end surface 112 . Light member 12 ; it can also be said that when the light beam in the second light guide member 12 is deflected at the third end face 113 and then enters the first light guide member 11 through the second end face 112 . The second end surface 112 of the first light guide member 11 and the third end surface 113 of the second light guide member 12 may be regular surfaces or irregular surfaces, such as wedge-shaped surfaces, arc-shaped surfaces, and the like.

The switch driving assembly 2 includes a first driving member 21 and a second driving member 22, the second driving member 22 is disposed on the second light guide member 12, for example, the second driving member 22 is sleeved and fixed on the second driving member 22. On the light guide member 12, the first driving member 21 is used to drive the second driving member 22 to move and drive the second light guide member 12 to move between the initial position and the target position. When the component 12 is at the initial position and the target position, there are gaps of different sizes between the second end face 112 of the first light guide member 11 and the third end face 113 of the second light guide member 12 . Specifically, when the second light guide member 12 is located at the target position, the gap between the second end face 112 of the first light guide member 11 and the third end face 113 of the second light guide member 12 may be larger than the initial position The gap between the second end face 112 of the first light guide member 11 and the third end face 113 of the second light guide member 12 may also be smaller than the second end face 112 of the first light guide member 11 and the second end face 113 of the first light guide member 11 in the initial position. The gap between the third end faces 113 of the optical element 12 .

Take Figure 1 as the initial position and Figure 2 as the target position as an example. For example, the first light guide member 11 and the second light guide member 12 are formed of materials with the same refractive index. Referring to FIG. 1 , the light beam is input from the first end face 111 of the first light guide member 11 and output from the fourth end face 114 of the second light guide member 12 . The third end face 113 of the light guide member 12 is directly attached, and there is no optical path deflection during the transmission of the first light guide member 11 and the second light guide member 12, so the light beam passes straight through the first light guide member 11 and the second light guide member 12. The two light guide members 12 are output from point a of the fourth end face 114 of the second light guide member 12 . Referring to FIG. 2 , when the second end face 112 of the first light guide member 11 and the third end face 113 of the second light guide member 12 maintain a certain distance, the second end face 112 of the first light guide member 11 and the second end face 113 of the There is an air gap between the third end faces 113 of the light guide member 12. Because the refractive index of the air gap is different from the refractive index of the first light guide member 11 and the refractive index of the second light guide member 12, through the first light guide member 12, there is an air gap. The light beams of the light member 11 and the second light guide member 12 are respectively deflected at the second end face 112 of the first light guide member 11 and the third end face 113 of the second light guide member 12 , and the light beams pass from the second light guide member 12 . Point b of the fourth end face 114 is output. Through the above process, the position of the output point of the light beam on the fourth end face 114 is shifted from the point a to the output position of point b, and the switching of the light beam from the position a to the position b at the output end is realized.

The first driving member 21 can drive the second driving member 22 to move and drive the second light guide member 12 to move between an initial position and a target position. Specifically, take FIG. 1 as the initial position and FIG. 2 as the target position as an example. When the second light guide member 12 is at the initial position, the first driving member 21 can give the second driving member 22 a driving force towards the target position, and the second driving member 22 drives the second light guide member 12 from the initial position Moving to the target position, the gap between the second end face 112 of the first light guide member 11 and the third end face 113 of the second light guide member 12 gradually increases. When the second light guide 12 is located at the target position, the first driving member 21 can stop or maintain the driving force to the second driving member 22, the second light guide 12 will be locked at the target position, and The light path will remain the same. When the second light guide member 12 is located at the target position, there may be no force between the first driving member 21 and the second driving member 22, and the second driving member 22 and the second light guide member 12 to which it is fixed remain at the target position . When the second light guide member 12 is located at the target position, the first driving member 21 can give the second driving member 22 a driving force toward the initial position, and the second driving member 22 drives the second light guide member 12 from the target position to the initial position. As the position moves, the gap between the second end face 112 of the first light guide member 11 and the third end face 113 of the second light guide member 12 gradually decreases until the second light guide member 12 moves under the driving of the second driving member 22 to the initial position. When the second light guide member 12 is at the initial position, there may be no force between the first driving member 21 and the second driving member 22, and the second driving member 22 and the second light guide member 12 to which it is fixed remain at the initial position .

Therefore, by adjusting the direction of the driving force applied by the first driving member 21 to the second driving member 22, the first driving member 21 can drive the second light guide member 12 to the initial position and the target through the second driving member 22. The effect of moving between positions. Adjusting the distance between the first light guide member 11 and the second light guide member 12 through the above structure is by adjusting the distance between the second end face 112 of the first light guide member 11 and the third end face 113 of the second light guide member 12 The size of the gap can achieve the purpose of adjusting the shift distance of the output beam relative to the input beam transition. At the same time, when the first driving member 21 stops giving the driving force to the second driving member 22, the second driving member 21 and the second light guide member 12 fixed thereto maintain the working state when the first driving member 21 gives the driving force, The output beam position does not change compared to when the first driving member 21 gives the driving force to the second driving member 22 . Since the optical path conversion assembly 1 and the switch drive assembly 2 are not limited to be arranged in a space perpendicular to each other, the above structure has the advantage of saving the space of the locking optical switch, and can achieve the effect of overall miniaturization of the locking optical switch.

In a preferred embodiment, the first light guide member 11 and the second light guide member 12 may have a rectangular or cylindrical structure as a whole, and the first light guide member 11 and the second light guide member 12 The member 12 is preferably formed of a material with a uniform refractive index, such as glass or quartz, the second end face 112 of the first light guide member 11 and the third end face 113 of the second light guide member 12 are respectively wedge-shaped surfaces, and the When the second end face 112 of the first light guide member 11 and the third end face 113 of the second light guide member 12 are attached, the light beam in the first light guide member 11 is not deviated when passing through the second end face 112 and the third end face 113 . fold and enter the second light guide 12 . According to the reversibility of the optical path, the light beams in the second light guide member 12 may also enter the first light guide member 11 without being deflected when passing through the third end face 113 and the second end face 112 . The locking type optical switch formed by the above structure is in-line type or linear type structure, the structure is more compact, and can be applied in various occasions. When the second end face 112 of the first light guide member 11 and the third end face 113 of the second light guide member 12 are attached, the locking type optical switch can be made more compact and more space-saving.

The first driving member 21 may be a pneumatic driving member, an electromagnetic driving member, etc. In a preferred embodiment, the first driving member 21 is an electromagnetic driving member. There is a magnetic force between the first driving member 21 and the second driving member 22 . When the driving force of the first driving member 21 acting on the second driving member 22 is a magnetic force, the switching speed of the lock-type optical switch is relative to the mechanical force because the force applying object and the force receiving object do not need to be in direct contact with the magnetic force. Faster drive, better reliability and longer life.

Specifically, taking FIG. 1 as the initial position and FIG. 2 as the target position as an example, in FIGS. 1 and 2 , the first driving member 21 is disposed on the side of the second driving member 22 close to the first light guide member 11 . When the second light guide member 12 is at the initial position, the first driving member 21 generates a magnetic repulsion force that drives the second driving member 22 to move to the target position, and the second light guide member 12 moves to the target position along with the second driving member 22 . When the second light guide member 12 is at the target position, the first driving member 21 generates a magnetic attraction force that drives the second driving member 22 to move to the initial position, and the second light guide member 12 moves to the initial position along with the second driving member 22 .

As shown in FIG. 1 , the locking type optical switch may further include a sleeve assembly 3, which may be integrally formed, or may include a light guide sleeve 31 and a driver sleeve 32, etc. Combination. When the sleeve assembly 3 is in a combined form including the light guide sleeve 31 and the driver sleeve 32 , the second end face 112 of the first light guide 11 and the third end face of the second light guide 12 The 113 is accommodated in the light guide sleeve 31 , which can prevent foreign matter from the external environment from entering the gap between the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12 . The fourth end surface 114 of the second light guide member 12 is located outside the light guide member sleeve 31 , and the second light guide member 12 and the light guide member sleeve 31 may be gap-fitted, so that the second light guide member 12 can move along the axial direction of the light guide sleeve 31 , which can avoid friction between the second light guide 12 and the sleeve assembly 3 when the second light guide 12 is driven to move by the second driving member 22 . The driver sleeve 32 is connected to the light guide sleeve 31 , the second driver 22 is located in the driver sleeve 32 , the first driver 21 is disposed on the light guide sleeve 31 , and the first driver The part 21 is, for example, sleeved and fixed on the light guide sleeve 31, and the sleeve assembly 3 is arranged so that the light guide sleeve 31 and the driver sleeve 32 are separated into a structure, which is more convenient for the assembly and later maintenance of the locking optical switch. . The driver sleeve 32 is connected to the light guide sleeve 31 , the second driver 22 is located in the driver sleeve 32 , and the first driver 21 is disposed on the light guide sleeve 31 .

In a preferred embodiment, as shown in FIG. 1 , the first driving member 21 is an electromagnet sleeved outside the light guide sleeve 31 , and the second driving member 22 is a permanent magnet. When the first driving member 21 is an electromagnet, the first driving member 21 may include an electromagnetic coil 211 and an iron core 212, the iron core 212 is sleeved outside the light guide sleeve 31, and the electromagnetic coil 211 is sleeved outside the iron core 212, and by changing the power supply direction of the electromagnetic coil 211, the conversion of the magnetic repulsion force and the magnetic attraction force of the first driving member 21 acting on the second driving member 22 can be realized. After the electromagnetic coil 211 is de-energized, the locking optical switch maintains the working state before the de-energization; when the electromagnetic coil 211 is energized again and the current direction changes, the first driving member 21 can generate the force to change the working state; When the power is turned on again and the current direction does not change, the locking optical switch still maintains the previous working state. The iron core 212 may be a soft iron or silicon steel material with the advantage of being demagnetized when power is turned off. The driver sleeve 32 is a magnetically conductive sleeve made of ferromagnetic material, and a part of the magnetic field of the electromagnet of the first driver 21 can be guided to the other side of the second driver 22 through the driver sleeve 32 . , so that the magnetic induction intensity of the second driving member 22 is increased, the driving effect of the first driving member 21 on the second driving member 22 is enhanced, and the locking function is realized.

In order that the second light guide 12 does not rotate radially during the movement, a first positioning portion (not shown) may be provided on the light guide sleeve 31 , and a second positioning portion may be provided on the second light guide 12 (not shown), the first positioning portion and the second positioning portion cooperate to guide the second light guide member 12 to move in a predetermined direction when the second light guide member 12 moves. Preferably, the first positioning portion is a guide groove or a guide hole provided on the light guide sleeve 31 , the guide groove can be provided on the inner wall of the light guide sleeve 31 , and the guide hole can penetrate through the light guide For the inner and outer walls of the sleeve 31 , the second positioning portion is a flat key disposed on the second light guide member 12 , and the flat key can be disposed on the outer wall of the second light guide member 12 . At the same time, the guide hole can lead out the gas between the first light guide member 11 and the second light guide member 12 when they approach, so as to adjust the distance between the second end face 112 of the first light guide member 11 and the second light guide member 12 . The size of the gap between the third end faces 113 is smoother. As an alternative, the first positioning portion may be a flat key disposed on the inner wall of the light guide sleeve 31 , and the second positioning portion may be a guide groove or a guide groove disposed on the second light guide 12 . guide hole.

Similarly, an air guide hole between the second end surface 112 and the third end surface 113 may be provided on the light guide sleeve 31 , the first light guide 11 and the second light guide 12 When approaching, the air guide holes lead out the gas between them, so that it is smoother to adjust the size of the gap between the second end surface 112 of the first light guide member 11 and the third end surface 113 of the second light guide member 12 .

In a preferred embodiment, between the second end face 112 of the first light guide member 11 and the third end face 113 of the second light guide member 12 during the operation of the second light guide member 12 Always have gaps. When there is always a gap between the second end face 112 of the first light guide 11 and the third end face 113 of the second light guide 12 during the operation of the second light guide 12, the second light guide The light guide 12 will never collide with the first light guide 11 during the moving process, thereby avoiding damage to the first light guide 11 and the second light guide 12 and prolonging the service life of the locking optical switch.

The locking-type optical switch structure described above can also be applied to a fiber-optic locking-type optical switch. The locking-type optical switch according to another embodiment of the present application will be described in detail below with reference to FIG. 3 . As shown in FIG. 3 , the locking optical switch further includes an optical path input and output device, and the optical path input and output device includes a first optical fiber 41 , a second optical fiber 42 and a converging lens 43 , and the first optical fiber 41 can be used for light beams The second optical fiber 42 can be used for the input or output of the light beam, and the converging lens 43 is used for condensing the light beam input by the first optical fiber 41 . The first optical fiber 41 is disposed on the first end face 111 of the first light guide member 11 , the second optical fiber 42 is disposed on the fourth end face 114 of the second light guide member 12 , and the converging lens 43 is disposed Between the fiber head of the first optical fiber 41 and the first end face 111 of the first light guide member 11 , the light beam of the fiber head of the first optical fiber 41 passes through the converging lens 43 and the first light guide member 11 and the second light guide member 12 are then converged on the end face of the fiber head of the second optical fiber 42 . The converging lens 43 may be a G lens (g-lens) or a C lens (C-Lens), preferably a G lens. The G lens has the advantages of small size, ultra-short focal length, and flat end face. When the G lens is used as the converging lens 43, the structure of the optical fiber type locking optical switch is more compact.

In a specific implementation manner, the first optical fiber 41 can be a single-fiber optical fiber head, and the second optical fiber 42 can be a dual-fiber optical fiber head, so that the locking optical switch becomes an in-line optical fiber type 1×2 locking type optical switch.

Please refer to FIGS. 3 to 15 , the present application includes an optical path conversion assembly 1 , a switch driving assembly 2 , a sleeve assembly 3 and an optical path input and output device, and the optical path conversion assembly 1 includes a first light guide 11 and a second light guide 12. The switch driver assembly 2 includes a first driver 21 and a second driver 22; the sleeve assembly 3 includes a light guide sleeve 31 and a driver sleeve 32; the optical path input and output device includes a first optical fiber 41, The second optical fiber 42 and the converging lens 43 . The first driving member 21 is an electromagnet, which includes an electromagnetic coil 211 and an iron core 212 . The second driving member 22 is a permanent magnet. The driver sleeve 32 is a magnetic conductive sleeve. The first optical fiber 41 is a single-core optical fiber head, which has a first optical fiber head 411; the second optical fiber 42 is a dual-core optical fiber head, which has a second optical fiber head 421 and a third optical fiber head 422; the converging lens 43 is a G lens.

During use, the first driving member 21 drives the second driving member 22 and drives the second light guide member 12 to move, thereby changing the second end face 112 of the first light guide member 11 and the second light guide member The size of the gap between the third end faces 113 of the component 12 is determined. The switching function of the locking type optical switch is realized by the change of the gap between the second end face 112 of the first light guide member 11 and the third end face 113 of the second light guide member 12 . The optical path switching of the light beam passing through the locking optical switch is as follows:

(1) Please refer to FIG. 3 , FIG. 4 , FIG. 5 and FIG. 6 , the second light guide member 12 and the second driving member 22 are in the initial position. When the light beam is condensed from the first fiber head 411 of the first optical fiber 41 through the converging lens 43 and input to the first light guide member 11 , the electromagnetic coil 211 of the first driving member 21 is not energized. There is a magnetic force between the iron core 212 of the first driving member 21 and the second driving member 22 to make the second driving member 22 at the initial position. Since there is a larger gap between the second driving member 22 and the driving member sleeve 32 at the initial position than when the second driving member 22 is at the target position, when the second driving member 22 is at the initial position, the magnetic force that the second driving member 22 receives towards the initial position is greater than the magnetic force towards the target position. The magnetic force makes the second light guide member 12 connected to the second driving member 22 locked in the initial position, so that the converged light beam is coupled into the second optical fiber head 421 of the dual-core optical fiber head.

(2) Please refer to FIG. 3 , FIG. 7 , FIG. 8 and FIG. 9 , when the light beam is converged from the first fiber head 411 of the first fiber 41 through the focusing lens 43 and input to the first light guide 11 , the first driving The electromagnetic coil 211 of the driving member 21 is energized and generates a magnetic field opposite to the direction of the second driving member 22. The first driving member 21 generates a magnetic repulsion force for the second driving member 22 to move to the target position. At the same time, because the driving tube set 32 is a magnetically conductive material , the driving tube assembly 32 generates a magnetic attraction force on the second driving member 22 toward the target position on the side of the target position, so the second light guide member 12 moves to the target position under the driving of the second driving member 22 . As the gap distance between the third end face 113 of the second light guide member 12 and the second end face 112 of the first light guide member 11 increases, the light beam derived from the fourth end face 114 of the second light guide member 12 is relatively The offset distance of the input light beam on the first end face 111 of a light guide member 11 is also increased accordingly. The light beam output by the fourth end face 114 of the second light guide member 12 gradually moves from the second fiber head 421 of the second optical fiber 42 to the third fiber head 422 to realize the switching of the light beam.

(3) Please refer to FIG. 3 , FIG. 10 , FIG. 11 and FIG. 12 , when the light beam is converged from the first fiber head 411 of the first optical fiber 41 through the focusing lens 43 and input to the first light guide 11 , the second driving The member 22 moves to the target position under the driving action of the first driving member 21 . The light beam input through the first light guide member 11 is deflected by the second end face 112 of the first light guide member 11 and the third end face 113 of the second light guide member 12 and then exits the fourth end face 114 of the second light guide member 12 . The output into the third fiber head 422 is shifted relative to the input beam. The electromagnetic coil 211 of the first driving member 21 can be kept energized or de-energized, and the second light guide member 12 connected to the second driving member 22 is locked at the target position so that the converged light beam is continuously coupled to the third optical fiber of the second optical fiber 42 Head 422.

(4) Please refer to FIG. 3 , FIG. 13 , FIG. 14 and FIG. 15 , when the light beam is converged from the first fiber head 411 of the first optical fiber 41 through the converging lens 43 and input to the first light guide 11 , the first optical fiber is changed. The power supply direction of the electromagnetic coil 211 of the driving member 21, the second driving member 22 receives the magnetic force from the first driving member 21 to the initial position and the driving member sleeve 32 on the target position side to the second driving member 22. A magnetic repulsion force toward the initial position is generated, and the second light guide member 12 is driven to approach the direction of the first light guide member 11 until the second light guide member 12 moves to the initial position. The first driving member 21 can be kept powered or powered off, and the second light guide member 12 connected to the second driving member 22 is locked in the initial position so that the converged light beam is coupled into the second fiber head 421 of the second optical fiber 42 .

The switching of the above optical paths is performed by the second driving member 22 through the magnetic repulsion or magnetic attraction of the first driving member 21 to adjust the distance between the first light guide member 11 and the second light guide member 12, that is, by adjusting the first light guide member 11 and the second light guide member 12 The size of the gap between the second end face 112 of the light guide 11 and the third end face 113 of the second light guide 12 achieves the effect of shifting the output beam relative to the input beam by the offset distance.

The lock-type optical switch with this structure has the advantage of saving the space of the lock-type optical switch because the optical path conversion assembly 1 and the switch driving assembly 2 are not limited to be arranged in a space arrangement that is perpendicular to each other. A magnetic force is used between the first driving member 21 and the second driving member 22, and when the magnetic force is applied, the switching speed of the locking type optical switch is higher, the reliability is better, and the service life is longer. At the same time, in order to improve the understanding of this application, this embodiment provides a 1×2 optical path switching principle, but the number of optical fiber heads in the locking optical switch is not limited to this. Array locking optical switches from 1×N to M×N are realized.

This application is described from the viewpoints of purpose of use, efficiency, progress and novelty, etc., and has complied with the functional enhancement and use requirements emphasized by the patent law. It is only an example, and does not limit this application. Therefore, all structures, devices, features, etc. that are similar to or similar to those of this application, that is, all equivalent replacements or modifications made according to the scope of the patent application of this application, shall belong to this application. within the scope of protection of the patent application.

Claims (13)

1. A locking type optical switch, comprising: the light path conversion component and the switch driving component;

the light path conversion component comprises a first light guide piece and a second light guide piece, wherein the first light guide piece is provided with a first end face and a second end face which are opposite, the second light guide piece is provided with a third end face and a fourth end face which are opposite, the second end face and the third end face are opposite and adjacent, and when a gap exists between the second end face and the third end face, a light beam in the first light guide piece is deflected at the second end face and then enters the second light guide piece through the third end face, or a light beam in the second light guide piece is deflected at the third end face and then enters the first light guide piece through the second end face;

the switch driving assembly comprises a first driving piece and a second driving piece, the second driving piece is arranged on the second light guide piece, the first driving piece is used for driving the second driving piece to move and drive the second light guide piece to move between an initial position and a target position, and when the second light guide piece is at the initial position and the target position, a gap with different sizes is formed between the second end face of the first light guide piece and the third end face of the second light guide piece.

2. The locking optical switch of claim 1, wherein the second end surface of the first light guide and the third end surface of the second light guide are wedge surfaces, and when the second end surface of the first light guide and the third end surface of the second light guide are attached to each other, the light beam in the first light guide does not deflect and enter the second light guide when passing through the second end surface and the third end surface, or the light beam in the second light guide does not deflect and enter the first light guide when passing through the third end surface and the second end surface.

3. A locking type optical switch according to claim 1, wherein a magnetic force is applied between said first driving member and said second driving member.

4. A locking optical switch according to claim 3, further comprising a sleeve assembly, the sleeve assembly comprising: the second end face of the first light guide piece and the third end face of the second light guide piece are accommodated in the light guide piece sleeve, the fourth end face of the second light guide piece is positioned outside the light guide piece sleeve, and the second light guide piece and the light guide piece sleeve are in clearance fit;

the driving part sleeve is connected with the light guide part sleeve, the second driving part is located in the driving part sleeve, and the first driving part is arranged on the light guide part sleeve.

5. The optical switch of claim 4, wherein the first driving member is an electromagnet disposed outside the light guide sleeve, and the second driving member is a permanent magnet.

6. The locking type optical switch according to claim 5, wherein the electromagnet of the first driving member comprises an electromagnetic coil and an iron core, the iron core is sleeved outside the light guide sleeve, the electromagnetic coil is sleeved outside the iron core, and when the electromagnetic coil changes the power-on direction, the electromagnetic field direction of the first driving member changes simultaneously.

7. A locking type optical switch according to claim 6, wherein said actuator sleeve is a magnetically conductive sleeve.

8. The locking type optical switch of claim 4, wherein the light guide sleeve is provided with a first positioning portion, the second light guide is provided with a second positioning portion, and the first positioning portion and the second positioning portion cooperate to guide the second light guide to move along a predetermined direction when the second light guide moves.

9. The locking type optical switch according to claim 8, wherein the first positioning portion is a guide groove or a guide hole provided on the light guide sleeve, and the second positioning portion is a flat key provided on the second light guide.

10. The locking optical switch according to claim 4, wherein the light guide sleeve is provided with a gas guide hole between the second end surface and the third end surface.

11. A locking optical switch as claimed in claim 1, further comprising an optical path input/output device, wherein the optical path input/output device comprises a first optical fiber, a second optical fiber and a converging lens, the first optical fiber is disposed adjacent to the first end surface of the first optical fiber, the second optical fiber is disposed adjacent to the fourth end surface of the second optical fiber, the converging lens is disposed between the optical fiber head of the first optical fiber and the first end surface of the first optical fiber, and the light beam of the optical fiber head of the first optical fiber is converged onto the end surface of the optical fiber head of the second optical fiber after passing through the converging lens, the first optical fiber and the second optical fiber.

12. A locking type optical switch according to claim 11, wherein said first optical fiber is a single fiber head and said second optical fiber is a double fiber head.

13. The locking optical switch of claim 1, wherein the second light guide member has a gap between the second end surface of the first light guide member and the third end surface of the second light guide member during operation.

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