Device capable of automatically coupling laser

Abstract

The utility model discloses a laser coupling device, belongs to the technical field of laser coupling equipment, and particularly relates to an automatic coupling laser device, which comprises a focusing lens, a focusing lens frame, a stepping motor, an optical fiber coupler, an optical fiber coupler panel and a temperature-measurable optical fiber. Two stepping motors are installed on a lens frame of the focus lens, the moving directions of the motors are vertical movement and horizontal movement respectively, movement of the focus lens in the horizontal direction and the vertical direction can be adjusted respectively, a temperature-measurable optical fiber is connected into an optical fiber coupler, and after laser is output, when the system detects that the temperature of the optical fiber rises fast, the focus lens can be adjusted to be in a normal state. The system can control the stepping motor to move slightly, monitors the temperature change condition of the optical fiber in real time, meets the coupling requirement of the optical fiber when the temperature of the optical fiber rises slowly or does not rise, can effectively solve the problem of abnormal coupling caused by different concentricity of the optical fiber, can increase the laser power output, can effectively reduce the damage rate of the optical fiber, and improves the quality of the optical fiber. The service lifetime of the fiber is prolonged.

Description

Technical Field

[0001] The utility model discloses a laser coupling device, belongs to the technical field of laser coupling equipment, and specifically relates to an automatic laser coupling device. Background Art

[0002] Laser coupling utilizes the interaction between two or more single-mode optical fibers to transfer energy between them, thereby realizing the transmission and multiplexing of optical signals. The basic principle is to couple the beam emitted by the laser into a single-mode optical fiber through a coupler, transmit it to another coupler, and then couple the beam into the corresponding detector or receiver through the second coupler to realize the transmission and reception of optical signals.

[0003] When the concentricity of laser fibers is inconsistent, the laser coupling device in the prior art cannot couple with different optical fibers, thereby increasing laser loss and reducing laser power output. Utility Model Content

[0004] Purpose of the utility model: to provide an automatic laser coupling device to solve the above-mentioned problems.

[0005] Technical solution: An automatic laser coupling device, which consists of a focusing lens, a focusing lens frame, a stepping motor, a fiber coupler, a fiber coupler panel and a temperature-measurable optical fiber;

[0006] In a further embodiment, the focusing lens frame is mounted on the stepper motor and connected to the stepper motor so as to drive the focusing lens frame to move through the stepper motor, the focusing lens is mounted on the focusing lens frame, the fiber optic coupler panel is mounted on the rear end of the focusing lens frame, the fiber optic coupler is mounted on the fiber optic coupler panel and corresponds to the focusing lens, and the temperature-measurable optical fiber is mounted at the output end of the fiber optic coupler.

[0007] In a further embodiment, two stepper motors are provided and connected to the focusing lens frame at the same time. The moving directions of the two stepper motors are vertical movement and horizontal movement, respectively, driving the focusing lens frame to follow the movement to adjust the moving position of the focusing lens in the horizontal direction and the vertical direction respectively.

[0008] In a further embodiment, the fiber coupler is used to connect to a temperature-measurable optical fiber to receive laser light corresponding to the focusing lens.

[0009] Beneficial effects: The utility model installs two stepper motors on the focusing mirror frame, and the moving directions of the motors are vertical and horizontal respectively. The movement of the focusing mirror in the horizontal and vertical directions can be adjusted respectively. The temperature measuring optical fiber is connected to the optical fiber coupler. After the laser is output, when the system detects that the temperature of the optical fiber rises rapidly, the stepper motor can be controlled to move slightly, and the temperature change of the optical fiber can be monitored in real time. When the optical fiber heats up slowly or does not heat up, the coupling requirements of the optical fiber are met, which can effectively solve the coupling abnormality problem caused by different concentricity of the optical fiber, increase the laser power output, and effectively reduce the damage rate of the optical fiber and extend the service life of the optical fiber. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the utility model.

[0011] Reference numerals: focusing lens 1 , focusing lens frame 2 , stepping motor 3 , optical fiber coupler 4 , optical fiber coupler panel 5 , temperature-measurable optical fiber 6 . DETAILED DESCRIPTION

[0012] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0013] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0014] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0015] An automatic laser coupling device comprises: a focusing lens 1, a focusing lens frame 2, a stepping motor 3, a fiber optic coupler 4, a fiber optic coupler panel 5, and a temperature-measurable optical fiber 6.

[0016] In one embodiment, Figure 1 As shown, the focusing lens frame 2 is installed on the stepping motor 3 and connected to the stepping motor 3 so as to drive the focusing lens frame 2 to move through the stepping motor 3, the focusing lens 1 is installed on the focusing lens frame 2, the fiber optic coupler panel 5 is installed at the rear end of the focusing lens frame 2, the fiber optic coupler 4 is installed on the fiber optic coupler panel 5 and corresponds to the focusing lens 1, and the temperature-measurable optical fiber 6 is installed at the output end of the fiber optic coupler 4.

[0017] In one embodiment, Figure 1 As shown, two stepper motors 3 are provided and are connected to the focusing lens frame 2 at the same time. The moving directions of the two stepper motors 3 are vertical movement and horizontal movement, respectively, driving the focusing lens frame 2 to follow the movement, so as to adjust the moving position of the focusing lens 1 in the horizontal direction and the vertical direction respectively.

[0018] In one embodiment, Figure 1 As shown, the optical fiber coupler 4 is used to connect the temperature-measurable optical fiber and receive the laser corresponding to the focusing lens 1.

[0019] In one embodiment, Figure 1 As shown, two stepper motors 3 are installed on the focusing lens frame, and the moving directions of the motors are vertical and horizontal, respectively, which can adjust the movement of the focusing lens in the horizontal and vertical directions respectively. The temperature-measuring optical fiber 6 is connected to the optical fiber coupler 4. After the laser is output, when the system detects that the temperature of the optical fiber rises rapidly, the stepper motor 3 can be controlled to move slightly, and the temperature change of the optical fiber can be monitored in real time. When the optical fiber heats up slowly or does not heat up, the coupling requirements of the optical fiber are met.

[0020] Working principle: The fiber coupler 4 is installed on the fiber coupler panel 5 and can be used to connect the temperature-measurable optical fiber 6. There are two stepper motors 3. The moving directions of the motors are vertical and horizontal respectively. The moving positions of the focusing lens in the horizontal and vertical directions can be adjusted respectively. The output direction of the laser is shown in the figure. When the laser light after the focusing lens completely enters the optical fiber, the laser transmission efficiency is the highest, the laser output is the highest, and there is no temperature rise in the optical fiber. If the concentricity of the temperature-measurable optical fiber 6 is different, the laser light does not completely enter the optical fiber, and some of the losses are at the optical fiber port. At this time, the optical fiber heats up. The more the optical fiber position deviates, the faster the optical fiber heats up, and the faster the optical fiber is damaged. When the system detects that the optical fiber heats up quickly, it will automatically control the stepper motor 3 to move and adjust the horizontal and vertical positions of the focusing lens 1 until the optical fiber heats up slowly or does not heat up. At this time, the motor stops moving, and the optical fiber coupling requirements are met.

[0021] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A laser device capable of automatic coupling, characterized in that: It consists of a focusing lens, a focusing lens frame, a stepping motor, a fiber coupler, a fiber coupler panel and a temperature-measurable optical fiber; The focusing lens frame is mounted on the stepping motor and connected to the stepping motor so as to drive the focusing lens frame to move through the stepping motor. The focusing lens is mounted on the focusing lens frame. The fiber optic coupler panel is mounted on the rear end of the focusing lens frame. The fiber optic coupler is mounted on the fiber optic coupler panel and corresponds to the focusing lens. The temperature-measurable optical fiber is mounted on the output end of the fiber optic coupler.

2. The automatic laser coupling device according to claim 1, characterized in that: The stepper motors are provided with two and are connected to the focusing lens frame at the same time. The moving directions of the two stepper motors are vertical movement and horizontal movement respectively, driving the focusing lens frame to follow the movement to adjust the moving position of the focusing lens in the horizontal direction and the vertical direction respectively.

3. The automatic laser coupling device according to claim 1, characterized in that: The optical fiber coupler is used to connect the temperature-measurable optical fiber and receive the laser corresponding to the focusing lens.

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