High-power laser optical fiber coupler

Abstract

The utility model discloses a high-power laser optical fiber coupler, which belongs to the technical field of laser equipment and comprises an access column, a plurality of optical fiber channels are arranged in the access column, a first connecting piece for fixing optical fibers is arranged on the left side of each optical fiber channel, and the first connecting pieces are fixedly connected with the left side face of the access column. A light outlet column is arranged on the right side of the access column, the light outlet column is in threaded connection with the access column, a cavity is formed in the inner space between the light outlet column and the access column, a convex lens is clamped in the cavity, a light outlet channel is formed in the light outlet column, and a second connecting piece used for fixing an optical fiber is arranged on the right side of the light outlet channel. According to the utility model, the optical fiber is convenient to connect in and connect out, the light dissipation is reduced through the reflective film tube and the reflective plating layer, the heating of the shell is further reduced, the laser coupling efficiency is improved, and the square protective shell is convenient to fix with an installation plane through the threaded installation hole on the square protective shell.

Description

Technical Field

[0001] This utility model relates to the field of laser equipment technology, specifically to a high-power laser fiber coupler. Background Technology

[0002] A laser is a device or apparatus that emits laser light by generating optical oscillations through optical feedback formed by a resonant cavity or other means within a substance capable of stimulated emission amplification of photons. The substance capable of generating stimulated emission amplification is the working material of the laser. High-power lasers typically have a power range of over 100W and are mainly used in laser processing, laser cladding, laser cleaning, and other fields.

[0003] Fiber optic couplers are commonly used optical components in lasers, primarily used to couple the laser beam generated by a laser diode to an optical fiber, achieving efficient transmission of laser energy within the fiber. The basic structure of a fiber optic coupler includes key components such as a laser diode, the fiber optic coupler itself, a cooling device, and a control circuit. The laser diode, as the source of the laser beam, generates a laser beam by applying an electric current to excite the recombination of electrons and holes in a semiconductor material. The fiber optic coupler is responsible for precisely coupling this beam into the optical fiber, achieving beam guidance and transmission. The cooling device and control circuit are responsible for temperature control of the laser diode and overall performance stability, respectively.

[0004] Existing fiber optic couplers are not convenient for connecting multiple fibers, and light loss during fiber coupling causes the coupler housing to heat up, which in turn reduces the laser coupling efficiency. Therefore, a high-power laser fiber optic coupler is needed. Utility Model Content

[0005] To address the aforementioned technical problems, this invention provides a high-power laser fiber coupler.

[0006] The technical solution of this utility model is: a high-power laser fiber coupler, including an access post, the access post having multiple fiber optic channels inside, a connector for fixing the fiber optic channel on the left side of the fiber optic channel, the connector being fixedly connected to the left side of the access post, an output post on the right side of the access post, the output post being threadedly connected to the access post, the internal space between the output post and the access post forming a cavity, a convex lens being snapped into the cavity, an output channel inside the output post, a connector for fixing the fiber optic channel on the right side of the output channel, the connector being fixedly connected to the output post.

[0007] Furthermore, the inner walls of both the optical fiber channel and the light output channel are provided with reflective film tubes.

[0008] Explanation: The reflective film tube enhances light reflection, preventing light from escaping from the optical fiber and causing the temperature of the access column and output column to rise.

[0009] Furthermore, connector one and connector two have the same structure, both including a connecting post and a connecting cap, with a through hole between the connecting post and the connecting cap for the optical fiber to pass through, and a tapered clamping pad between the connecting cap and the access laser optical fiber.

[0010] Explanation: The fiber optic shell is fixed by the connector cap. During the threaded connection between the connector cap and the connector post, the tapered clamping pad is squeezed, causing the tapered clamping pad to clamp the fiber optic shell.

[0011] Furthermore, the inner wall of the cavity is provided with a reflective coating.

[0012] Explanation: The reflective coating reflects the stray light onto the convex lens, and after multiple reflections, it exits through the light exit channel.

[0013] Furthermore, a square protective shell is fixedly connected to the outer side of both the access column and the light output column, and threaded mounting holes are provided on both the front and rear sides of the square protective shell.

[0014] Note: The threaded mounting holes on the square protective shell facilitate a fixed connection with the mounting surface, preventing the insertion column and the light output column from rolling.

[0015] The beneficial effects of this utility model are:

[0016] This invention allows multiple laser fibers to be connected to an access post. The light source is emitted from the right side of the fiber channel onto a convex lens, which focuses the light onto the output channel. The laser is then output through the fiber in the output channel. This invention generates a higher intensity laser by coupling multiple laser sources and outputs it through the fiber. The fiber access and output of this invention are convenient. The reflective film tube and reflective coating reduce light scattering, thereby reducing housing heat generation and improving laser coupling efficiency. The threaded mounting holes on the square protective shell facilitate fixing to the mounting surface. Attached Figure Description

[0017] Figure 1 This is a schematic cross-sectional view of the structure of this utility model.

[0018] Figure 2 This is a cross-sectional schematic diagram of the first practical connector.

[0019] Figure 3 This is a schematic diagram of the left-side structure of this utility model.

[0020] Among them, 1-access post, 2-fiber optic channel, 3-connector one, 4-light output post, 5-cavity, 6-convex lens, 7-light output channel, 8-connector two, 21-reflective film tube, 31-connector post, 32-connector cap, 33-through hole, 34-conical clamping gasket, 51-reflective coating, 9-square protective shell, 91-threaded mounting hole. Detailed Implementation

[0021] Example 1:

[0022] like Figure 1 As shown, a high-power laser fiber coupler includes an access post 1. The access post 1 has multiple fiber optic channels 2 inside. A connector 3 for fixing the fiber optic channel 2 is provided on the left side. The connector 3 is fixedly connected to the left side of the access post 1. An output post 4 is provided on the right side of the access post 1. The output post 4 is threadedly connected to the access post 1. The internal space between the output post 4 and the access post 1 forms a cavity 5. A convex lens 6 is snapped into the cavity 5. An output channel 7 is provided inside the output channel 4. A connector 8 for fixing the fiber optic channel 7 is provided on the right side of the output channel 7. The connector 8 is fixedly connected to the output post 4.

[0023] To clarify, this invention does not modify the optical fiber itself; it uses existing optical fiber products.

[0024] like Figure 2 As shown, connector 3 and connector 8 have the same structure, both including a connecting post 31 and a connecting cap 32. A through hole 33 for optical fiber to pass through is provided between the connecting post 31 and the connecting cap 32, and a tapered clamping pad 34 is provided between the connecting cap 32 and the access laser optical fiber.

[0025] The fiber optic shell is fixed by the connector cap 32. During the threaded connection between the connector cap 32 and the connector post 31, the tapered clamping pad 34 is squeezed, so that the tapered clamping pad 34 clamps the fiber optic shell.

[0026] Example 2:

[0027] The difference between this embodiment and embodiment 1 is that the inner walls of both the optical fiber channel 2 and the light output channel 7 in this embodiment are provided with reflective film tubes 21. The reflective film tubes 21 are made of vacuum electroplated mirror PET reflective film, that is, a reflective mirror is formed on the surface of the PET film by vacuum electroplating technology.

[0028] Compared to Example 1, this embodiment enhances light reflection by using a reflective film tube 21 to prevent light from escaping from the optical fiber and causing the temperature of the access column 1 and the output column 4 to rise.

[0029] Example 3:

[0030] The difference between this embodiment and embodiment 2 is that the inner wall of the chamber 5 in this embodiment is provided with a reflective coating 51, which is formed on the inner wall of the chamber 5 by vacuum electroplating technology.

[0031] Compared to Example 2, in this embodiment, the reflective coating 51 reflects the scattered light onto the convex lens 6, and after multiple reflections, it is emitted from the light exit channel 7.

[0032] Example 4:

[0033] The difference between this embodiment and embodiment 3 is that, for example Figure 3 As shown, in this embodiment, the connecting column 31 is fixedly connected to the left side of the access column 1, and the access column 1 and the outer side of the light output column 4 are both fixedly connected to a square protective shell 9. The square protective shell 9 has threaded mounting holes 91 on both the front and rear sides.

[0034] Compared to Embodiment 3, in this embodiment, the threaded mounting hole 91 on the square protective shell 9 facilitates fixed connection with the mounting plane, preventing the inlet column 1 and the light-emitting column 31 from rolling.

[0035] The working steps of the above embodiment 4 include the following steps:

[0036] S1. The core of the laser fiber is inserted into the fiber channel 2, and the core of the laser fiber is inserted into the output channel 7. The outer shell of the laser fiber is fixedly connected to the input post 1 through connector 3, and the outer shell of the laser fiber is fixedly connected to the output post 4 through connector 2. The light in the laser fiber channel enters the convex lens 6 from the fiber channel 2 and is focused at the output channel 7 and output by the laser fiber.

[0037] S2. Fix the directional protective shell 9 to the mounting plane through the threaded mounting hole 91. The square protective shell 9 is threadedly connected to the outer wall of the access post 1 and the light output post 4.

Claims

1. A high power laser fiber coupler, characterized by, The utility model provides an access column (1), the inside of access column (1) is equipped with a plurality of optical fiber channels (2), the left side of optical fiber channel (2) is equipped with the connecting piece one (3) for fixing optical fiber, connecting piece one (3) with access column (1) left side fixed connection, the right side of access column (1) is equipped with the light emitting column (4), light emitting column (4) with access column (1) threaded connection, the inside space between light emitting column (4) and access column (1) forms chamber (5), the chamber (5) is equipped with the convex lens (6) in the joint, the inside of light emitting column (4) is equipped with the light emitting channel (7), the right side of light emitting channel (7) is equipped with the connecting piece two (8) for fixing optical fiber, connecting piece two (8) with light emitting column (4) fixed connection.

2. A high power laser fiber coupler as recited in claim 1, wherein, The inner wall of the optical fiber channel (2) and the light emitting channel (7) is provided with a reflective film tube (21).

3. A high power laser fiber coupler as recited in claim 1, wherein, The connecting piece one (3) and the connecting piece two (8) are the same structure, both including a connecting column (31) and a connecting cap (32), a through hole (33) for the optical fiber to pass through is arranged between the connecting column (31) and the connecting cap (32), and a tapered clamping gasket (34) is arranged between the connecting cap (32) and the access laser optical fiber.

4. A high power laser fiber coupler as recited in claim 1, wherein, The inner wall of the chamber (5) is provided with a reflective plating layer (51).

5. A high power laser fiber coupler as recited in claim 1, wherein, The outer side of the access column (1) and the light emitting column (4) is fixedly connected with a square protective shell (9), and the square protective shell (9) is provided with threaded mounting holes (91) on the front and rear sides.

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