CN216817083U

CN216817083U - Mode scrambler

Info

Publication number: CN216817083U
Application number: CN202122883230.5U
Authority: CN
Inventors: 许亮; 曹丛绘; 杨科; 陈明
Original assignee: Wuhan Raycus Fiber Laser Technologies Co Ltd
Current assignee: Wuhan Raycus Fiber Laser Technologies Co Ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-06-24
Anticipated expiration: 2031-11-23

Abstract

The utility model belongs to the technical field of optical fibers, and discloses a mode scrambler, which comprises a base, an extrusion block and a driving structure, wherein the base is provided with a first extrusion surface extending along a first direction, the extrusion block is provided with a second extrusion surface, the first extrusion surface and the second extrusion surface are used for extruding the optical fibers and are mutually matched concave-convex surfaces, and the driving structure is configured to be capable of driving the extrusion block to move along a second direction so as to enable the second extrusion surface to be close to the first extrusion surface; the first direction is perpendicular to the second direction. This mode scrambler is through setting up drive structure drive extrusion piece and being linear motion along the second direction, and makes the second extrusion face can be close to first extrusion face to extrude optic fibre, can break the mode balance of optic fibre transmission laser, reinforcing intermode coupling effect controls energy transmission and transform, reaches the effect of adjusting laser beam quality, finally outputs the laser of ideal beam quality.

Description

Mode scrambler

Technical Field

The utility model belongs to the technical field of optical fibers, and particularly relates to a mode scrambler.

Background

The output power of a high-power fiber laser is closely related to the diameter of the fiber. In order to prevent the possible optical damage and nonlinear effect problem of the fiber end face under high power, the fiber diameter of the optical fiber is generally increased along with the increase of the laser power, but the thick core causes the beam quality of the output laser to be reduced.

Therefore, a mold scrambler is needed to solve the above technical problem.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a mode scrambler to solve the problem that the quality of output laser beams is reduced due to the fact that the laser power is increased and the fiber diameter of an optical fiber is increased in the prior art.

In order to achieve the above object, the present application provides a mode scrambler, including a base, an extrusion block, and a driving structure, wherein the base has a first extrusion surface extending along a first direction, the extrusion block has a second extrusion surface, the first extrusion surface and the second extrusion surface are concave-convex surfaces matching with each other, and the driving structure is configured to drive the extrusion block to move along a second direction so as to enable the second extrusion surface to approach the first extrusion surface;

the first direction is perpendicular to the second direction.

As a preferred technical scheme of the mold scrambler, an accommodating groove capable of accommodating the extrusion block is formed in the base, and one side wall surface of the accommodating groove is at least part of the first extrusion surface;

the base is in the both sides of first direction all are seted up the intercommunication hold the recess and supply optic fibre passes the breach.

As a preferred technical solution of the mold scrambler, a limiting groove is formed in the base, the limiting groove has a limiting surface, and the limiting surface is configured to limit the position of the extrusion block when the second extrusion surface approaches the first extrusion surface.

As a preferable technical solution of the mode scrambler, the limiting groove has a first guide surface extending along the second direction, and the extrusion block has a second guide surface attached to the first guide surface.

As a preferred technical solution of the mode scrambler, the limiting groove has the first guide surface on both sides of the first direction.

As a preferred technical solution of the mold scrambler, the extrusion block extends outward to form a top stopper portion, and the top stopper portion is configured to cover a gap between the first extrusion surface and the second extrusion surface.

As a preferred technical scheme of the mold scrambler, a fastening hole is formed in the base, a strip-shaped hole extending along the second direction is formed in the extrusion block, a fastening member penetrates through the strip-shaped hole and extends into the fastening hole, and the fastening member is configured to fasten or loosen the extrusion block relative to the base.

As a preferred technical scheme of the mold scrambler, two strip-shaped holes are formed, and the two strip-shaped holes are arranged at intervals in the first direction.

As a preferred technical scheme of the mold scrambler, the driving structure comprises a driving member and a first positioning block, the first positioning block is provided with a first positioning column, the extrusion block is provided with a first positioning hole for the first positioning column to be inserted into, and the driving member is configured to drive the first positioning block to move along the second direction.

As a preferred technical scheme of the mold scrambler, the mold scrambler further comprises an installation seat, the driving structure is installed on the installation seat, a second positioning block is arranged on the installation seat, a second positioning column is arranged on the second positioning block, and a second positioning hole for the second positioning column to insert into is formed in the base.

Compared with the prior art, the utility model has the following beneficial effects:

this mode scrambler is through setting up drive structure drive extrusion piece and being linear motion along the second direction, and makes the second extrusion face can be close to first extrusion face to extrude optic fibre, can break the mode balance of optic fibre transmission laser, reinforcing intermode coupling effect controls energy transmission and transform, reaches the effect of adjusting laser beam quality, finally outputs the laser of ideal beam quality.

Drawings

Fig. 1 is a schematic structural diagram of a mode scrambler provided in this embodiment;

FIG. 2 is a schematic cross-sectional view of the base and the pressing block provided in this embodiment;

fig. 3 is a schematic structural diagram of the base provided in this embodiment;

FIG. 4 is a schematic top view of the base provided in this embodiment;

fig. 5 is a schematic structural diagram of the extrusion block provided in this embodiment;

fig. 6 is a schematic bottom view of the extrusion block provided in this embodiment.

Wherein:

1. a base; 11. a first extrusion surface; 12. fastening holes; 13. a second positioning hole; 101. a notch; 102. a limiting surface; 103. a first guide surface;

2. extruding the block; 21. a second extrusion surface; 22. a top limiting part; 23. a strip-shaped hole; 24. a first positioning hole; 201. a stop surface; 202. a second guide surface;

3. a drive structure; 31. a drive member; 32. a first positioning block; 321. a first positioning post;

4. a second positioning block; 41. a second positioning column;

5. a fastener;

6. an optical fiber;

7. a sleeve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

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

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 1 to 6, the present embodiment provides a mold scrambler, which includes a base 1, an extrusion block 2 and a driving structure 3. The base 1 is provided with a first extrusion surface 11 extending along a first direction, the extrusion block 2 is provided with a second extrusion surface 21, the first extrusion surface 11 and the second extrusion surface 21 are used for extruding the optical fiber 6 and are mutually matched concave-convex surfaces, and the driving structure 3 is used for driving the extrusion block 2 to move along a second direction so that the second extrusion surface 21 is close to the first extrusion surface 11. The first direction is perpendicular to the second direction. The first direction is an ef direction in fig. 2, and the second direction is a cd direction in fig. 2.

It can be understood that the driving structure 3 is arranged to drive the extrusion block 2 to move linearly along the second direction, so that the second extrusion surface 21 can be close to the first extrusion surface 11, and the optical fiber 6 (as shown in fig. 1, the optical fiber 6 penetrates through the sleeve 7), thereby breaking the mode balance of the optical fiber transmitting laser, enhancing the coupling effect between the modes, controlling the transmission and transformation of energy, achieving the effect of adjusting the quality of the laser beam, and finally outputting the laser with ideal beam quality. The adjustable high-power fiber laser system is applied to a high-power laser system, the adjustment and the controllability of the beam quality and the energy distribution of output laser are realized, and the application effect and the application field of the high-power fiber laser system are improved.

Referring to fig. 1, the driving structure 3 includes a first positioning block 32 and a driving member 31, a first positioning post 321 is disposed on the first positioning block 32, a first positioning hole 24 for inserting the first positioning post 321 is disposed on the extrusion block 2, and the driving member 31 can drive the first positioning block 32 to move along the second direction. Specifically, in the present embodiment, the driving member 31 is preferably a micrometer, that is, the driving structure 3 is preferably an X-axis precision displacement platform, which is a mature prior art and is not described herein again. Preferably, two first positioning posts 321 and two first positioning holes 24 are provided, and correspond to each other one by one.

Further, the mold scrambler further comprises an installation seat, the driving structure 3 is installed on the installation seat, a second positioning block 4 is arranged on the installation seat, a second positioning column 41 is arranged on the second positioning block 4, and a second positioning hole 13 for the second positioning column 41 to insert is formed in the base 1. Preferably, two second positioning columns 41 and two second positioning holes 13 are provided, and correspond to each other.

It can be understood that the first positioning column 321 is inserted into the first positioning hole 24 to drive the extrusion block 2, and the second positioning column 41 is inserted into the second positioning hole 13 to fix the base 1. After the pressing block 2 is moved to the right position, the first positioning column 321 and the second positioning column 41 can be pulled out, so that the driving structure 3 can be used for multiple times.

Specifically, in the present embodiment, the concave-convex surface is a sine wave surface, and the first pressing surface 11 and the second pressing surface 21 are sine wave surfaces that are yin-yang each other, that is, a peak of the first pressing surface 11 corresponds to a valley of the second pressing surface 21, and a valley of the first pressing surface 11 corresponds to a peak of the second pressing surface 21. The wave amplitude, wave width and wave number of the sine wave surface can be adjusted according to actual needs.

Referring to fig. 2, in the present embodiment, the central line of the first pressing surface 11 is a, the central line of the second pressing surface 21 is b, and the driving structure 3 drives the pressing block 2 to make the second pressing surface 21 close to the first pressing surface 11, that is, the distance D between the central lines a and b is adjusted, so as to satisfy the sensitivity of the optical fiber 6 to the pressing deformation, so as to achieve the tuning of the actual laser beam quality close to the standard beam quality.

As shown in fig. 3 and 4, the base 1 is provided with an accommodating groove capable of accommodating the pressing block 2, and one side wall surface of the accommodating groove is at least part of the first pressing surface 11. In addition, the base 1 is provided with a notch 101 for communicating with the accommodating groove and allowing the optical fiber 6 to pass through on both sides of the first direction.

In addition, a limiting groove is formed in the base 1, the limiting groove is provided with a limiting surface 102, and the limiting surface 102 is used for limiting the position of the extrusion block 2 when the second extrusion surface 21 approaches the first extrusion surface 11. Specifically, in the present embodiment, the limiting groove communicates with the accommodating groove, the limiting groove and the side wall surface of the accommodating groove together form the first pressing surface 11, and the limiting surface 102 is connected to the first pressing surface 11.

Of course, in other embodiments, only the receiving groove or the limiting groove may be provided. When only the accommodating groove is provided, one side wall surface of the accommodating groove is the first pressing surface. When only the limiting groove is arranged, a protrusion can be additionally arranged on the base 1, and the protrusion and the limiting groove jointly form the first extrusion surface, or the protrusion can be provided with the first extrusion surface.

Further, the pressing block 2 is provided with a stop surface 201, when the pressing block 2 moves to a preset position along the second direction, the stop surface 201 contacts with the limiting surface 102 to limit the movement of the pressing block 2, and the optical fiber 6 is prevented from being excessively pressed. Preferably, two limiting surfaces 102 are provided, and the limiting surfaces 102 are connected to the first pressing surface 11.

Further, the limiting groove has a first guide surface 103 extending along the second direction, and the extrusion block 2 has a second guide surface 202 fitting to the first guide surface 103. Preferably, the limiting groove has a first guiding surface 103 on both sides of the first direction, and correspondingly, the extrusion block 2 has two second guiding surfaces 202.

By providing the first guide surface 103 and the second guide surface 202, the movement of the extrusion block 2 can be guided, and the extrusion block 2 is prevented from deviating from the second direction during the movement.

Referring to fig. 5 and 6, the pressing block 2 is provided with a top stopper 22 extending outward, and the top stopper 22 can cover a gap between the first pressing surface 11 and the second pressing surface 21. Through setting up top spacing portion 22, when first compressive plane 11 and second compressive plane 21 extrude optic fibre 6, top spacing portion 22 covers the clearance between first compressive plane 11 and the second compressive plane 21, avoids optic fibre 6 to deviate from between first compressive plane 11 and the second compressive plane 21 when pressurized.

Referring to fig. 3 to 6, the base 1 is provided with a fastening hole 12, the extrusion block 2 is provided with a strip-shaped hole 23 extending along the second direction, the fastening member 5 passes through the strip-shaped hole 23 and extends into the fastening hole 12, and the fastening member 5 can fasten or loosen the extrusion block 2 relative to the base 1. Specifically, in the present embodiment, the fastening member 5 is preferably a bolt, and the corresponding fastening hole 12 is a threaded hole. When the optical fiber 6 needs to be extruded, the fastener 5 loosens the extrusion block 2, so that the extrusion block 2 can be driven by the driving structure 3 to move along the second direction, and after the optical fiber 6 is extruded in place, the fastener 5 fastens the extrusion block 2 on the base 1, so that the optical fiber 6 can keep the current state.

Further, in the present embodiment, two strip-shaped holes 23 are provided, and the two strip-shaped holes 23 are provided at intervals in the first direction. So set up, stability when guaranteeing extrusion block 2 to remove and the stability after extrusion block 2 is fastened by fastener 5.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A mode scrambler is characterized by comprising a base (1), an extrusion block (2) and a driving structure (3), wherein the base (1) is provided with a first extrusion surface (11) extending along a first direction, the extrusion block (2) is provided with a second extrusion surface (21), the first extrusion surface (11) and the second extrusion surface (21) are concave-convex surfaces which are matched with each other and used for extruding an optical fiber (6), and the driving structure (3) is configured to drive the extrusion block (2) to move along a second direction so as to enable the second extrusion surface (21) to be close to the first extrusion surface (11);

the first direction is perpendicular to the second direction.

2. The die scrambler according to claim 1, wherein the base (1) is provided with a receiving groove capable of receiving the extrusion block (2), and one side wall surface of the receiving groove is at least part of the first extrusion surface (11);

the base (1) is provided with notches (101) which are communicated with the accommodating groove and are used for the optical fibers (6) to pass through on two sides of the first direction.

3. The die scrambler according to claim 1, wherein the base (1) has a limiting groove, the limiting groove has a limiting surface (102), and the limiting surface (102) is configured to limit the position of the extrusion block (2) when the second extrusion surface (21) approaches the first extrusion surface (11).

4. A die scrambler as claimed in claim 3, wherein the limit groove has a first guide surface (103) extending in the second direction, and the extrusion block (2) has a second guide surface (202) abutting the first guide surface (103).

5. The mode scrambler of claim 4, wherein the stop groove has the first guide surface (103) on both sides of the first direction.

6. The spoiler according to claim 1, characterized in that the extrusion block (2) is outwardly extended with a top stopper portion (22), the top stopper portion (22) being configured to cover a gap between the first extrusion surface (11) and the second extrusion surface (21).

7. The scrambler according to claim 1, wherein the base (1) is provided with a fastening hole (12), the extrusion block (2) is provided with a strip-shaped hole (23) extending along the second direction, a fastening member (5) passes through the strip-shaped hole (23) and extends into the fastening hole (12), and the fastening member (5) is configured to fasten or unfasten the extrusion block (2) relative to the base (1).

8. The mode scrambler of claim 7, wherein there are two of the strip holes (23), and the two strip holes (23) are spaced apart in the first direction.

9. The die scrambler according to claim 1, wherein the driving structure (3) comprises a driving member (31) and a first positioning block (32), the first positioning block (32) is provided with a first positioning column (321), the extrusion block (2) is provided with a first positioning hole (24) for the first positioning column (321) to insert, and the driving member (31) is configured to drive the first positioning block (32) to move along the second direction.

10. The scrambler according to claim 9, wherein the scrambler further comprises a mounting seat, the driving structure (3) is mounted on the mounting seat, a second positioning block (4) is disposed on the mounting seat, a second positioning column (41) is disposed on the second positioning block (4), and a second positioning hole (13) for inserting the second positioning column (41) is formed in the base (1).