CN113376752A - Locking type optical switch - Google Patents
Locking type optical switch Download PDFInfo
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- CN113376752A CN113376752A CN202110661491.4A CN202110661491A CN113376752A CN 113376752 A CN113376752 A CN 113376752A CN 202110661491 A CN202110661491 A CN 202110661491A CN 113376752 A CN113376752 A CN 113376752A
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- light guide
- end surface
- piece
- driving
- sleeve
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/354—Switching arrangements, i.e. number of input/output ports and interconnection types
- G02B6/3544—2D constellations, i.e. with switching elements and switched beams located in a plane
- G02B6/3548—1xN switch, i.e. one input and a selectable single output of N possible outputs
- G02B6/3552—1x1 switch, e.g. on/off switch
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/3564—Mechanical details of the actuation mechanism associated with the moving element or mounting mechanism details
- G02B6/3568—Mechanical details of the actuation mechanism associated with the moving element or mounting mechanism details characterised by the actuating force
- G02B6/3572—Magnetic force
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The present application relates to a locking type optical switch including an optical path conversion member and a switch driving member. The light path conversion assembly comprises a first light guide piece and a second light guide piece, 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, and the second end face and the third end face are opposite to each other and are arranged in an adjacent mode. 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. The light path is switched through the light path conversion component and the switch driving component, and the light path switching device has the advantage of saving space.
Description
Technical Field
The application relates to the technical field of optical communication, in particular to a locking type optical switch.
Background
The optical switch is an important device for switching optical links, and has irreplaceable functions in the field of optical communication. Conventional optical switches are generally classified into mechanical optical switches, acousto-optic modulated optical switches, electro-optic modulated optical switches, micro-precision mechanical optical switches, and the like. Other types of optical switches besides mechanical optical switches have a great majority of markets because of their high cost, especially their poor performance-price ratio and competitiveness when the number of channels to be switched is small and the switching speed is not high.
The traditional mechanical optical switch mainly controls the optical path through a relay, fixes optical elements (a dioptric prism, a plane mirror and the like) of the optical path of the optical switch on an armature component of a common relay through extension transformation, and changes the transmission of the optical path by utilizing the switching movement of the armature in the working process of the relay, thereby realizing the switching of the optical path. In the optical switch with the traditional structure, the relay and the optical path of the optical element are arranged in the mutually vertical space to form a T-shaped structure, so that the space is large when the optical switch is used, and the optical structure and the optical path are difficult to arrange. In addition, the traditional mechanical optical switch is mainly subjected to extension modification on the traditional relay armature arm and is additionally provided with an optical element to realize the effect of optical path switching, the optimal working load state of the relay is damaged, the defects of long switching response time, high failure rate and poor reliability exist, and the mechanical optical switch has the problem of short service life due to the mechanical contact of the relay.
With the development of optical communication technology, the miniaturization and integration of all optical communication devices have become the development trend of updating various devices, and the traditional mechanical optical switch is more and more limited by use conditions due to relatively large volume and space waste of structural shape, and cannot meet the market demand.
Disclosure of Invention
The application aims at providing a locking type photoswitch, contains light path conversion subassembly and switch drive assembly, can drive the light path conversion subassembly through switch drive assembly and carry out locking type photoswitch's light path and switch, and then overcome the big problem of current locking type photoswitch T font structure occupation space.
In order to achieve the purpose, the following technical scheme is adopted in the application:
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 surface and a second end surface which are opposite, the second light guide piece is provided with a third end surface and a fourth end surface which are opposite, the second end surface and the third end surface are opposite and adjacent, when a gap exists between the second end surface and the third end surface, light beams in the first light guide piece deflect at the second end surface and then enter the second light guide piece through the third end surface, or light beams in the second light guide piece deflect at the third end surface and then enter the first light guide piece through the second end surface;
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.
Preferably, the second end surface of the first light guide member and the third end surface of the second light guide member are respectively wedge-shaped surfaces, and when the second end surface of the first light guide member and the third end surface of the second light guide member are attached, the light beam in the first light guide member does not deflect and enters the second light guide member when passing through the second end surface and the third end surface, or the light beam in the second light guide member does not deflect and enters the first light guide member when passing through the third end surface and the second end surface.
Preferably, a magnetic force is applied between the first driving member and the second driving member.
Preferably, the locking type optical switch further comprises a sleeve assembly, the sleeve assembly including: 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 piece sleeve pipe is connected with the light guide piece sleeve pipe, the second driving piece is located in the driving piece sleeve pipe, and the first driving piece is arranged on the light guide piece sleeve pipe.
Preferably, the first driving member is an electromagnet sleeved outside the light guide member sleeve, and the second driving member is a permanent magnet.
Preferably, the electromagnet of the first driving piece comprises an electromagnetic coil and an iron core, the iron core is sleeved outside the light guide piece sleeve, the electromagnetic coil is sleeved outside the iron core, and when the electromagnetic coil changes the electrifying direction, the electromagnetic field direction of the first driving piece is changed simultaneously.
Preferably, the drive member sleeve is a magnetically 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 are matched to guide the second light guide to move along a preset direction when the second light guide moves.
Preferably, the first positioning portion is a guide groove or a guide hole provided in the light guide sleeve, and the second positioning portion is a flat key provided in the second light guide.
Preferably, the light guide sleeve is provided with a gas guide hole located between the second end face and the third end face.
Preferably, locking type photoswitch still includes light path input/output device, light path input/output device includes first optic fibre, second optic fibre and convergent lens, first optic fibre sets up the first terminal surface of first leaded light spare, the second optic fibre sets up the fourth terminal surface of second leaded light spare, convergent lens set up at the optic fibre head of first optic fibre with between the first terminal surface of first leaded light spare, the light beam warp of the optic fibre head of first optic fibre converge behind the convergent lens first leaded light spare with the second leaded light spare on the terminal surface of the optic fibre head of second optic fibre.
Preferably, the first optical fiber is a single-fiber optical fiber head, and the second optical fiber is a double-fiber optical fiber head.
Preferably, in the working process of the second light guide member, a gap is always formed 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 this application include at least:
the utility model provides a locking type photoswitch that contains light path conversion components and switch drive assembly can realize locking type photoswitch's light path through switch drive assembly drive light path conversion components and switch, and above-mentioned structure has the advantage of saving the photoswitch space, can realize the whole miniaturized effect of locking type photoswitch.
Drawings
The present application is further described below with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of a locking type optical switch provided in an embodiment of the present application;
fig. 2 is a schematic structural view of the locking type optical switch of fig. 1 in another operation state;
fig. 3 is a schematic structural diagram of another locking type optical switch provided in the embodiment of the present application;
fig. 4 is a schematic optical path diagram of a switching case (1) of the locking type optical switch provided in the embodiment of the present application;
fig. 5 is a schematic diagram of a light beam input first optical fiber in the switching case (1) of the locking type optical switch provided in the embodiment of the present application;
fig. 6 is a schematic diagram of a second optical fiber for outputting a light beam in the switching case (1) of the locking type optical switch provided in the embodiment of the present application;
fig. 7 is a schematic optical path diagram of a switching case (2) of the locking type optical switch provided in the embodiment of the present application;
fig. 8 is a schematic diagram of a light beam input first optical fiber in the switching case (2) of the locking type optical switch provided in the embodiment of the present application;
fig. 9 is a schematic diagram of a second optical fiber for outputting a light beam in the switching case (2) of the locking type optical switch provided in the embodiment of the present application;
fig. 10 is a schematic optical path diagram of a switching case (3) of the locking type optical switch provided in the embodiment of the present application;
fig. 11 is a schematic diagram of a light beam input first optical fiber in the switching case (3) of the locking type optical switch provided in the embodiment of the present application;
fig. 12 is a schematic diagram of a second optical fiber for outputting a light beam in the switching case (3) of the locking type optical switch provided in the embodiment of the present application;
fig. 13 is a schematic optical path diagram of a switching case (4) of the locking type optical switch provided in the embodiment of the present application;
fig. 14 is a schematic diagram of a light beam input first optical fiber in the switching case (4) of the locking type optical switch provided in the embodiment of the present application;
fig. 15 is a schematic diagram of a second optical fiber for outputting a light beam in the switching case (4) of the lock-type optical switch provided in the embodiment of the present application.
The figure is as follows:
1. an optical path conversion component; 11. a first light guide; 12. a second light guide; 111. a first end face; 112. a second end face; 113. a third end face; 114. a fourth end face;
2. a switch drive assembly; 21. a first driving member; 22. a second driving member; 211. an electromagnetic coil; 212. an iron core;
3. a bushing assembly; 31. a light guide sleeve; 32. a drive member bushing;
41. a first optical fiber; 42. a second optical fiber; 43. a converging lens; 411. a first fiber optic head; 421. a second fiber optic head; 422. and a third fiber head.
Detailed Description
The present application is further described with reference to the accompanying drawings and the detailed description, and it should be noted that, in the present application, the embodiments or technical features described below may be arbitrarily combined to form a new embodiment without conflict.
As shown in fig. 1 and 2, the present application relates to a locking type optical switch including an optical path conversion member 1 and a switch driving member 2. The locking type optical switch shown in fig. 1 and 2 may be a locking type free space optical switch.
The light path conversion assembly 1 includes a first light guide 11 and a second light guide 12, the first light guide 11 having a first end surface 111 and a second end surface 112 opposite to each other, the second light guide 12 having a third end surface 113 and a fourth end surface 114 opposite to each other, the second end surface 112 and the third end surface 113 being disposed opposite to and 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 11 is deflected at the second end surface 112 and then enters the second light guide 12 through the third end surface 113; or when the light beam in the second light guide 12 is deflected at the third end surface 113, the light beam enters the first light guide 11 through the second end surface 112. The second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12 may be regular surfaces or irregular surfaces, such as wedge surfaces, arc 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 12, for example, the second driving member 22 is sleeved and fixed on the second light guide 12, the first driving member 21 is configured to drive the second driving member 22 to move and drive the second light guide 12 to move between an initial position and a target position, and when the second light guide 12 is at the initial position and the target position, a gap with a different size is formed between the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12. Specifically, when the second light guide 12 is located at the target position, a 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 may be larger than a 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 at the initial position, or may be smaller than a 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 at the initial position.
Take fig. 1 as an initial position and fig. 2 as a target position as an example. For example, the first light guide 11 and the second light guide 12 are formed of materials having the same refractive index. Referring to fig. 1, a light beam is input from a first end surface 111 of a first light guide 11 and output from a fourth end surface 114 of a second light guide 12, and since a second end surface 112 of the first light guide 11 and a third end surface 113 of the second light guide 12 are directly attached to each other, there is no optical path deviation in the transmission of the first light guide 11 and the second light guide 12, so that the light beam linearly passes through the first light guide 11 and the second light guide 12 and is output from a point a of the fourth end surface 114 of the second light guide 12. Referring to fig. 2, after the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12 are kept at a certain distance, since an air gap exists between the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12, since the refractive index of the air gap is different from that of the first light guide 11 and from that of the second light guide 12, the light beams passing through the first light guide 11 and the second light guide 12 are deflected at the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12, respectively, and the light beams are output from the point b of the fourth end surface 114 of the second light guide 12. Through the above process, the position of the output point of the light beam at the fourth end surface 114 is shifted from the point a to the 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 the initial position and the target position. Specifically, fig. 1 is an initial position, and fig. 2 is a target position. When the second light guide 12 is located at the initial position, the first driving member 21 can provide a driving force toward the target position to the second driving member 22, the second driving member 22 drives the second light guide 12 to move from the initial position to the target position, and a 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 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 unchanged. When the second light guide 12 is located at the target position, there is 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 12 fixed thereto are kept at the target position. When the second light guide 12 is located at the target position, the first driving member 21 can provide a driving force toward the initial position to the second driving member 22, the second driving member 22 drives the second light guide 12 to move from the target position to the initial position, and a 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 gradually decreases until the second light guide 12 moves to the initial position under the driving of the second driving member 22. When the second light guide 12 is located at the initial position, there is 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 12 fixed thereto are kept at the initial position.
Therefore, the direction of the driving force applied to the second driving member 22 by the first driving member 21 can be adjusted, so that the first driving member 21 drives the second light guide member 12 to move between the initial position and the target position through the second driving member 22. The distance between the first light guide member 11 and the second light guide member 12 is adjusted by the above structure, that is, 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 is adjusted, so that the purpose of adjusting the shift distance of the output light beam relative to the input light beam can be achieved. Meanwhile, 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 guiding member 12 fixed thereto maintain the working state when the first driving member 21 gives the driving force, and the position of the output light beam does not change compared with the position when the first driving member 21 gives the driving force to the second driving member 22. Because the light path conversion component 1 and the switch driving component 2 are not limited to the arrangement of the mutually vertical space arrangement form, the structure has the advantage of saving the space of the locking type optical switch, and the effect of integrally miniaturizing the locking type optical switch can be realized.
In a preferred embodiment, the first light guide 11 and the second light guide 12 may be integrally formed in a rectangular parallelepiped or cylindrical structure, the first light guide 11 and the second light guide 12 are preferably formed by a material with a uniform refractive index, such as glass or quartz, the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12 are respectively wedge-shaped surfaces, and when the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12 are attached, the light beam in the first light guide 11 passes through the second end surface 112 and the third end surface 113 without deflection and enters the second light guide 12. According to the reversibility of the optical path, the light beam in the second light guide 12 may not be deflected when passing through the third end surface 113 and the second end surface 112 and enter the first light guide 11. The locking type optical switch formed by the structure is of a linear or straight-line structure, has a more compact structure and can be applied to various occasions. When the second end surface 112 of the first light guide 11 is attached to the third end surface 113 of the second light guide 12, the locking optical switch can be made more compact and save more space.
The first driving member 21 may be a pneumatic driving member, an electromagnetic driving member, etc., and in a preferred embodiment the first driving member 21 is an electromagnetic driving member. Magnetic force is applied 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 locking type optical switch is faster, the reliability is better and the service life is longer than that of the mechanical force driving because the force application object and the force receiving object of the magnetic force do not need to be in direct contact.
Specifically, taking fig. 1 as an initial position and fig. 2 as a target position as an example, in fig. 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 11. When the second light guide 12 is at the initial position, the first driving member 21 generates a magnetic repulsion force for driving the second driving member 22 to move to the target position, and the second light guide 12 moves to the target position along with the second driving member 22. When the second light guide 12 is at the target position, the first driving member 21 generates a magnetic attraction force for driving the second driving member 22 to move to the initial position, and the second light guide 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, and the sleeve assembly 3 may be integrally formed, or may be a combination including a light guide sleeve 31 and an actuator sleeve 32. When the sleeve assembly 3 is a combination form including the light guide sleeve 31 and the driving member sleeve 32, the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12 are accommodated in the light guide sleeve 31, so that foreign matters in an external environment can be prevented from entering a 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 12 is located outside the light guide sleeve 31, and the second light guide 12 and the light guide sleeve 31 may be in clearance fit, so that the second light guide 12 can move along the axial direction of the light guide sleeve 31, and friction between the second light guide 12 and the sleeve 3 when the second light guide 12 is driven to move by the second driving member 22 can be avoided. Light pipe sleeve 31 is connected to driving piece sleeve 32, second driving piece 22 is located driving piece sleeve 32, first driving piece 21 sets up on light pipe sleeve 31, and first driving piece 21 for example cup joints and fixes on light pipe sleeve 31, the structure that light pipe sleeve 31 and driving piece sleeve 32 components of a whole that can function independently is set to sleeve subassembly 3 and the equipment and the later maintenance of locking type photoswitch of being more convenient for. The driving member sleeve 32 is connected to the light guide member sleeve 31, the second driving member 22 is located in the driving member sleeve 32, and the first driving member 21 is disposed on the light guide member 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, the electromagnetic coil 211 is sleeved outside the iron core 212, and a switching between a magnetic repulsion force and a magnetic attraction force applied to the second driving member 22 by the first driving member 21 may be realized by changing a power supply direction of the electromagnetic coil 211, for the locking type optical switch of the present application, after the electromagnetic coil 211 is powered off, the locking type optical switch maintains a working state before the power off; when the electromagnetic coil 211 is energized again and the direction of the current changes, the first driver 21 can generate an acting force to change the operating state; if the solenoid 211 is energized again and the direction of the current is not changed, the lock type optical switch remains in the previous operating state. The core 212 may be a soft iron or silicon steel material that has the advantage of being demagnetized when power is off. The driving member sleeve 32 is a magnetic conductive sleeve made of ferromagnetic material, and a part of the magnetic field of the electromagnet of the first driving member 21 can be guided to the other side direction of the second driving member 22 through the driving member 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 to prevent the second light guide 12 from rotating radially during the movement, a first positioning portion (not shown) may be disposed on the light guide sleeve 31, and a second positioning portion (not shown) may be disposed on the second light guide 12, and the first positioning portion and the second positioning portion cooperate to guide the second light guide 12 to move along a predetermined direction when the second light guide 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 may be provided on an inner wall of the light guide sleeve 31, the guide hole may penetrate through the inner wall and an outer wall of the light guide sleeve 31, the second positioning portion is a flat key provided on the second light guide 12, and the flat key may be provided on an outer wall of the second light guide 12. Meanwhile, the guide holes can guide out the gas between the first light guide member 11 and the second light guide member 12 when the first light guide member 11 and the second light guide member 12 are close to each other, so that 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 can be adjusted more smoothly. Alternatively, the first positioning portion may be a flat key provided on the inner wall of the light guide sleeve 31, and the second positioning portion may be a guide groove or a guide hole provided on the second light guide 12.
Similarly, the light guide sleeve 31 may be provided with a gas hole located between the second end surface 112 and the third end surface 113, and the gas hole guides gas between the first light guide 11 and the second light guide 12 when the first light guide 11 and the second light guide 12 approach each other, so as to adjust the size of 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 more smoothly.
In a preferred embodiment, there is always a 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 during the operation of the second light guide 12. When a gap is formed 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 during the working process of the second light guide member 12, the second light guide member 12 does not collide with the first light guide member 11 during the moving process, so that the damage to the first light guide member 11 and the second light guide member 12 is avoided, and the service life of the locking type optical switch is prolonged.
The above-described locking type optical switch structure may also be applied to an optical fiber type locking type optical switch, and a locking type optical switch of another embodiment of the present application will be described in detail with reference to fig. 3. As shown in fig. 3, the locking type optical switch further includes an optical path input/output device, the optical path input/output device includes a first optical fiber 41, a second optical fiber 42, and a condensing lens 43, the first optical fiber 41 can be used for inputting or outputting a light beam, the second optical fiber 42 can be used for inputting or outputting a light beam, and the condensing lens 43 is used for condensing the light beam input from the first optical fiber 41. The first optical fiber 41 is disposed on a first end surface 111 of the first light guide 11, the second optical fiber 42 is disposed on a fourth end surface 114 of the second light guide 12, the converging lens 43 is disposed between the optical fiber head of the first optical fiber 41 and the first end surface 111 of the first light guide 11, and the light beam of the optical fiber head of the first optical fiber 41 is converged on the end surface of the optical fiber head of the second optical fiber 42 after passing through the converging lens 43, the first light guide 11 and the second light guide 12. The converging Lens 43 may be a G Lens (G-Lens) or a C Lens (C-Lens), and is preferably a G Lens. The G lens has advantages of small size, ultra-short focal length, and flat end surface, and 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 one embodiment, the first optical fiber 41 may be a single fiber head, and the second optical fiber 42 may be a double fiber head, so that the locking type optical switch is a straight type optical fiber type 1 × 2 locking type optical switch.
Referring to fig. 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/output device, where the optical path conversion assembly 1 includes a first light guide 11 and a second light guide 12, and the switch driving assembly 2 includes a first driving member 21 and a second driving member 22; the sleeve assembly 3 comprises a light guide sleeve 31 and a driving member sleeve 32; the optical path input-output device includes a first optical fiber 41, a second optical fiber 42, and a condensing lens 43. The first driving member 21 is an electromagnet and includes an electromagnetic coil 211 and an iron core 212. The second driving member 22 is a permanent magnet. The drive member sleeve 32 is a magnetically conductive sleeve. The first optical fiber 41 is a single-core fiber tip having a first fiber tip 411; the second optical fiber 42 is a dual-core fiber tip having a second fiber tip 421 and a third fiber tip 422; the condenser lens 43 is a G lens.
In the using process, the first driving member 21 drives the second driving member 22 and drives the second light guide member 12 to move, so as to change 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. The switching function of the locking type optical switch is realized by the change of 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 optical path switching of the light beam by the lock-type optical switch is as follows:
(1) referring to fig. 3, 4, 5 and 6, the second light guide 12 and the second driving member 22 are in the initial positions. When the light beam is converged from the first fiber tip 411 of the first optical fiber 41 through the converging lens 43 and input to the first light guide 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. Due to the larger clearance of the second actuator 22 in the initial position with respect to the actuator sleeve 32 in the target position, the magnetic force applied to the second actuator 22 in the initial position is larger than the magnetic force applied to the target position, so that the second light guide 12 connected to the second actuator 22 is locked in the initial position, thereby coupling the converged light beam into the second fiber head 421 of the dual-core fiber head.
(2) Referring to fig. 3, 7, 8 and 9, when the light beam is converged by the converging lens 43 from the first fiber head 411 of the first fiber 41 and input to the first light guide 11, the electromagnetic coil 211 of the first driving member 21 is energized to generate a magnetic field in a direction opposite to that of the second driving member 22, the first driving member 21 generates a magnetic repulsion force to the second driving member 22 to move to the target position, and meanwhile, since the driving sleeve member 32 is made of a magnetic conductive material, the driving sleeve member 32 generates a magnetic attraction force to the second driving member 22 in a direction toward the target position at one side of the target position, so that the second light guide 12 moves to the target position under the driving of the second driving member 22. As the gap distance between the third end surface 113 of the second light guide 12 and the second end surface 112 of the first light guide 11 increases, the offset distance of the light beam guided out from the fourth end surface 114 of the second light guide 12 with respect to the input light beam from the first end surface 111 of the first light guide 11 increases accordingly. The light beam output through the fourth end surface 114 of the second light guide 12 gradually moves from the second fiber head 421 to the third fiber head 422 of the second optical fiber 42, so as to realize the switching of the light beam.
(3) Referring to fig. 3, 10, 11 and 12, when the light beam is converged by the converging lens 43 from the first fiber head 411 of the first fiber 41 and input into the first light guide 11, the second driving 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 11 is deflected by the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12, and then is input/output to the third fiber head 422 from the fourth end surface 114 of the second light guide 12 in a shifted position with respect to the input light beam. The electromagnetic coil 211 of the first actuator 21 may remain energized or de-energized and the second light guide 12 attached to the second actuator 22 is locked in the target position so that the focused light beam is continuously coupled into the third fiber tip 422 of the second fiber 42.
(4) Referring to fig. 3, 13, 14 and 15, when the light beam is converged by the converging lens 43 from the first fiber head 411 of the first fiber 41 and input to the first light guide 11, the power supply direction of the electromagnetic coil 211 of the first driving member 21 is changed, and the second driving member 22 drives the second light guide 12 to approach the first light guide 11 until the second light guide 12 moves to the initial position because of the magnetic force applied by the first driving member 21 to the initial position and the magnetic repulsion force generated by the driving member sleeve 32 on the target position side to the second driving member 22 to the initial position. The first driving member 21 can be kept powered on or off, and the second light guide 12 connected to the second driving member 22 is locked at the initial position so that the converged light beam is coupled into the second fiber head 421 of the second optical fiber 42.
In the above switching of the optical paths, the second driving element 22 adjusts the distance between the first light guide 11 and the second light guide 12 by the magnetic repulsion or the magnetic attraction of the first driving element 21, that is, the size of 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 is adjusted, so that the effect of changing the offset distance of the output light beam relative to the input light beam is realized.
The locking type optical switch adopting the structure has the advantage of saving the space of the locking type optical switch because the optical path conversion component 1 and the switch driving component 2 are not limited to the arrangement of the mutually vertical space arrangement form. Magnetic acting force is used between the first driving piece 21 and the second driving piece 22, and the locking type optical switch is higher in switching speed, better in reliability and longer in service life when the magnetic acting force is applied. Meanwhile, in order to improve understanding of the present application, the present embodiment provides a 1 × 2 optical path switching principle, but the number of optical fiber heads in the locking optical switch is not limited thereto, and the 1 × N to mxn array locking optical switch can be implemented by the structure of the locking optical switch according to the present application.
While the present application is described in terms of various aspects, including exemplary embodiments, the principles of the invention should not be limited to the disclosed embodiments, but are also intended to cover various modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
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 surface and a second end surface which are opposite, the second light guide piece is provided with a third end surface and a fourth end surface which are opposite, the second end surface and the third end surface are opposite and adjacent, when a gap exists between the second end surface and the third end surface, light beams in the first light guide piece deflect at the second end surface and then enter the second light guide piece through the third end surface, or light beams in the second light guide piece deflect at the third end surface and then enter the first light guide piece through the second end surface;
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 piece sleeve pipe is connected with the light guide piece sleeve pipe, the second driving piece is located in the driving piece sleeve pipe, and the first driving piece is arranged on the light guide piece sleeve pipe.
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 optical switch of 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 the electromagnetic field direction of the first driving member is changed simultaneously when the electromagnetic coil changes the power-on direction.
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 of claim 4, wherein the light guide sleeve is provided with a gas vent 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110661491.4A CN113376752B (en) | 2021-06-15 | 2021-06-15 | Locking type optical switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110661491.4A CN113376752B (en) | 2021-06-15 | 2021-06-15 | Locking type optical switch |
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| CN113376752B CN113376752B (en) | 2022-07-19 |
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| CN113376752B (en) | 2022-07-19 |
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