Optical fiber coupling assembly and laser

Abstract

The utility model discloses an optical fiber coupling assembly and a laser, the optical fiber coupling assembly comprises a coupler block and a transmission optical fiber, one side of the coupler block along a first direction is provided with a first surface, the first surface is provided with an accommodating groove extending along a second direction, and one side of the coupler block along the second direction is provided with a second surface, the accommodating groove extends to the second surface and an opening is formed in the second surface; the transmission optical fiber comprises a fixed section and an extending section which are sequentially connected, the fixed section is installed in the containing groove and connected with the coupler block, the end face of the end, away from the opening, of the fixed section communicates with a laser reflection assembly light path, and the extending section extends out of the second surface; buffer rubber is arranged at an opening of the containing groove and located between the outer circumferential face of the fixing section and the bottom face and / or the inner side face of the containing groove. The transmission optical fiber is isolated from at least part of the opening edge of the coupler block through the buffer rubber, so that the risk that the transmission optical fiber is damaged and even broken due to abrasion of the opening edge is reduced.

Description

Technical Field

[0001] The present application relates to the field of laser technology, and in particular to a fiber coupling component and a laser. Background Art

[0002] A laser's pump source is a core component that influences its performance and lifespan. The pump source must aggregate laser light from multiple chips through an optical assembly and transmit it to the end face of a transmission fiber, allowing the laser light to propagate within the fiber. To ensure that the optical assembly accurately transmits this aggregated laser light to the end face of the transmission fiber, the end of the transmission fiber closest to the optical assembly must be secured to a coupler block. This allows for precise adjustment of the transmission fiber's position relative to the optical assembly.

[0003] However, after the end of the transmission optical fiber close to the optical component is fixed to the coupler block, the transmission optical fiber is easily damaged or even broken by the wear of the coupler block during subsequent assembly operations of the laser, such as fiber stripping, fiber unpacking, and fiber coiling. Utility Model Content

[0004] The embodiments of the present application provide a fiber coupling assembly and a laser, which aim to solve the problem that after the end of the transmission fiber close to the optical assembly is fixed to the coupler block, the transmission fiber is easily damaged or even broken by the wear of the coupler block.

[0005] An embodiment of the present application provides an optical fiber coupling assembly, comprising:

[0006] A coupler block, wherein the coupler block has a first surface on one side along a first direction, the first surface is provided with a receiving groove extending along a second direction, the first direction and the second direction are arranged at an angle, the coupler block has a second surface on one side along the second direction, the receiving groove extends to the second surface and forms an opening on the second surface;

[0007] a transmission optical fiber, comprising a fixed section and an extended section connected in sequence, wherein the fixed section is installed in the receiving groove and connected to the coupler block, and the extended section extends out of the second surface;

[0008] Wherein, a buffer glue is provided at the opening of the accommodating groove, and the buffer glue is located between the outer peripheral surface of the fixing section and the bottom surface and / or inner side surface of the accommodating groove.

[0009] In some embodiments, the refractive index of the buffer glue is greater than or equal to 1.3 and less than or equal to 1.5.

[0010] In some embodiments, the buffer glue is made of UV glue, and the buffer glue is bonded between the outer peripheral surface of the fixing section and the bottom surface and / or inner side surface of the receiving groove.

[0011] In some embodiments, a portion of the buffer glue extends out of the second surface.

[0012] In some embodiments, the shrinkage rate of the buffer glue is greater than or equal to 1% and less than or equal to 5%.

[0013] In some embodiments, the elongation of the buffer glue is greater than or equal to 50%.

[0014] In some embodiments, the optical fiber coupling assembly further includes a fixing glue, which is located on a side of the buffer glue away from the opening along the first direction, and at least a portion of the fixing glue is located in the receiving groove and fixedly connects the fixing section and the coupler block.

[0015] In some embodiments, the refractive index of the fixing glue is greater than the refractive index of the buffer glue.

[0016] In some embodiments, the coupler block further comprises a third surface on a side facing away from the second surface; the third surface is provided with a mounting hole communicating with an end of the receiving groove away from the opening;

[0017] The optical fiber coupling assembly also includes a focusing lens, at least part of which is installed in the mounting hole. The focusing lens is arranged opposite to the end face of the fixing section away from the opening end. The focusing lens is used to receive laser light and focus the laser light before transmitting it to the end face.

[0018] The present application also provides a laser, comprising:

[0019] A laser emitting component, used for emitting laser;

[0020] A fiber optic coupling assembly, the fiber optic coupling assembly being the fiber optic coupling assembly described above, comprising a coupler block and a transmission optical fiber, the coupler block having a first surface on one side along a first direction, the first surface being provided with an accommodating groove extending along a second direction, the first direction being arranged at an angle to the second direction, the coupler block having a second surface on one side along the second direction, the accommodating groove extending to the second surface and forming an opening on the second surface; the transmission optical fiber comprising a fixed segment and an extending segment connected in sequence, the fixed segment being mounted in the accommodating groove and connected to the coupler block, the end face of the fixed segment remote from the opening being in optical communication with the laser reflection assembly, and the extending segment extending beyond the second surface;

[0021] Wherein, a buffer glue is provided at the opening of the accommodating groove, and the buffer glue is located between the outer peripheral surface of the fixing section and the bottom surface and / or inner side surface of the accommodating groove.

[0022] The optical fiber coupling assembly provided in the embodiment of the present application is capable of isolating the transmission optical fiber from at least part of the opening edge of the coupler block by providing a buffer glue at the opening of the coupler block, and positioning the buffer glue between the outer peripheral surface of the fixed section of the transmission optical fiber and the bottom surface and / or inner surface of the accommodating groove, thereby reducing the risk of the transmission optical fiber being damaged or even broken by contact between the opening edge and the transmission optical fiber. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0024] Figure 1 A schematic structural diagram of an embodiment of a fiber coupling assembly provided in an embodiment of the present application, wherein the focusing lens is not shown;

[0025] Figure 2 A schematic structural diagram of another embodiment of the optical fiber coupling assembly provided in an embodiment of the present application;

[0026] Figure 3 for Figure 1 Another angle view of the fiber coupling assembly.

[0027] Fiber coupling assembly 100; coupler block 110; first surface 111; receiving groove 1111; second surface 112; opening 1121; third surface 113; mounting hole 1131; buffer glue 120; transmission optical fiber 130; fixing section 131; extending section 132; fixing glue 150; first direction X; second direction Y. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0031] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0032] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0033] The embodiments of the present application provide a fiber coupling assembly and a laser, which are described in detail below.

[0034] First, an embodiment of the present application provides a fiber optic coupling assembly.

[0035] Figure 1 This is a schematic diagram of the structure of an embodiment of the optical fiber coupling assembly provided in the present application, wherein the focusing lens is not shown. Figure 1 As shown, the fiber optic coupling assembly 100 includes a coupler block 110 and a transmission optical fiber 130. Coupler block 110 has a first surface 111 on one side along a first direction X. This first surface 111 defines a receiving groove 1111 extending along a second direction Y. The first direction X and the second direction Y form an angle. Transmission optical fiber 130 includes a fixing section 131, which is mounted within receiving groove 1111 and connected to coupler block 110, thereby connecting transmission optical fiber 130 to coupler block 110. The angle formed by the first direction X and the second direction Y can be a right angle or an acute angle, depending on the structure of coupler block 110.

[0036] The coupler block 110 further includes a second surface 112 on one side along the second direction Y. The receiving groove 1111 extends to the second surface 112 and defines an opening 1121 on the second surface 112. The transmission optical fiber 130 further includes an extension segment 132, which is sequentially connected to the fixed segment 131. The extension segment 132 extends beyond the second surface 112 of the coupler block 110. The connection between the extension segment 132 and the fixed segment 131 is located at the opening 1121 of the receiving groove 1111.

[0037] After the transmission optical fiber 130 is fixed to the coupler block 110, during subsequent assembly operations of the laser, such as fiber stripping, fiber unwinding, and fiber coiling, the transmission optical fiber 130 is prone to shaking relative to the coupler block 110, causing the connection between the extended section 132 and the fixed section 131 of the transmission optical fiber 130 to easily contact the edge of the opening 1121 of the coupler block 110, causing the transmission optical fiber 130 to be worn by the edge of the opening 1121, resulting in damage or even breakage.

[0038] In order to avoid the above problems, in some embodiments, as Figure 1 As shown, a buffer glue 120 may be provided at the opening 1121 of the receiving groove 1111 , and the buffer glue 120 is located between the outer peripheral surface of the fixing section 131 of the transmission optical fiber 130 and the bottom surface and / or inner surface of the receiving groove 1111 .

[0039] The optical fiber coupling assembly 100 provided in the embodiment of the present application is capable of isolating the transmission optical fiber 130 from at least a portion of the edge of the opening 1121 of the coupler block 110 by disposing a buffer glue 120 at the opening 1121 of the coupler block 110, and positioning the buffer glue 120 between the outer peripheral surface of the fixed section 131 of the transmission optical fiber 130 and the bottom surface and / or inner surface of the receiving groove 1111. This reduces the risk of the transmission optical fiber 130 being damaged or even broken by contact between the edge of the opening 1121 and the transmission optical fiber 130, which could result from wear and tear of the edge of the opening 1121.

[0040] It should be noted that the rubber buffer 120 can be positioned between the outer circumference of the fixed section 131 of the transmission optical fiber 130 and the bottom and inner side surfaces of the receiving groove 1111. Alternatively, the rubber buffer 120 can be positioned only between the outer circumference of the fixed section 131 of the transmission optical fiber 130 and the bottom surface of the receiving groove 1111. Alternatively, the rubber buffer 120 can be positioned only between the outer circumference of the fixed section 131 of the transmission optical fiber 130 and the inner side surface of the receiving groove 1111. Of course, the former can further reduce the risk of the transmission optical fiber 130 being damaged or even broken by being worn by the edge of the opening 1121, and can make the placement of the rubber buffer 120 more convenient.

[0041] In some embodiments, the refractive index of the rubber buffer 120 can be greater than or equal to 1.3 and less than or equal to 1.5. Thus, the rubber buffer 120 is a low-refractive index rubber. When the rubber buffer 120 contacts the outer circumference of the transmission optical fiber 130, it has little effect on the optical performance of the transmission optical fiber 130. Furthermore, the rubber buffer 120 can have better high-temperature resistance, making it less likely to crack or shrink in high-temperature environments, allowing the rubber buffer 120 to more stably protect the transmission optical fiber 130. The refractive index of the rubber buffer 120 can be 1.35, 1.37, 1.4, 1.45, etc., depending on the material of the rubber buffer 120.

[0042] In some embodiments, the buffer glue 120 can be bonded between the outer peripheral surface of the fixing section 131 and the bottom surface and / or inner surface of the receiving groove 1111, so that the connection between the buffer glue 120 and the transmission optical fiber 130 and the coupler block 110 is more stable.

[0043] The material of the adhesive buffer 120 can include UV adhesive. Thus, the adhesive buffer 120 is formed by applying the UV adhesive to the outer circumference of the connection between the fixed section 131 and the extended section 132 of the transmission optical fiber 130 and curing it, making the formation of the adhesive buffer 120 more convenient. Furthermore, the UV adhesive can flow and fill between the outer circumference of the fixed section 131 of the transmission optical fiber 130 and the bottom and inner side surfaces of the receiving groove 1111, so that the cured adhesive buffer 120 can separate the transmission optical fiber 130 from the side edges of the opening 1121.

[0044] In other embodiments, the buffer glue 120 may be a tape or rubber that wraps the outer circumference of the connection between the fixed section 131 and the extended section 132 of the transmission optical fiber 130 , as long as the buffer can separate the transmission optical fiber 130 from the edge of the opening 1121 .

[0045] In some embodiments, as Figure 2 As shown, a portion of the rubber buffer 120 can extend beyond the second surface 112. This allows the rubber buffer 120 to encompass a greater portion of the outer circumference of the transmission optical fiber 130, thereby reducing the bending angle at the junction between the fixed section 131 and the extended section 132 of the transmission optical fiber 130, thereby further reducing the risk of damage or even breakage at the junction between the fixed section 131 and the extended section 132 of the transmission optical fiber 130. Specifically, a portion of the rubber buffer 120 can be positioned within the receiving groove 1111, while another portion of the rubber buffer 120 extends beyond and covers the second surface 112.

[0046] In some embodiments, the shrinkage rate of the rubber buffer 120 can be greater than or equal to 1% and less than or equal to 5%. Thus, after the rubber buffer 120 is positioned between the outer circumference of the fixed section 131 of the transmission optical fiber 130 and the bottom surface and / or inner surface of the receiving groove 1111, the rubber buffer 120 shrinks less, facilitating more stable protection of the transmission optical fiber 130 by the rubber buffer 120. The shrinkage rate of the rubber buffer 120 can be 2%, 3%, 4%, etc., depending on the material of the rubber buffer 120.

[0047] In addition, the elongation of the buffer glue 120 can be greater than or equal to 50%, thereby improving the buffering effect of the buffer glue 120. The elongation of the buffer glue 120 can be 55%, 60%, 70%, etc., depending on the material of the buffer glue 120.

[0048] In some embodiments, as Figure 1As shown, the optical fiber coupling assembly 100 further includes a fixing glue 150, which is located on a side of the buffer glue 120 away from the opening 1121 along the first direction X. At least a portion of the fixing glue 150 is located in the receiving groove 1111 and fixedly connects the fixing section 131 and the coupler block 110, thereby fixing the transmission optical fiber 130 to the coupler block 110.

[0049] Glue (e.g., UV glue) can be applied to the fixing section 131 at a distance from the opening 1121, and the glue can be brought into contact with the inner groove surface of the receiving groove 1111 and the first surface 111. After the glue solidifies, the fixing glue 150 is formed, which is very convenient to operate. Of course, the fixing section 131 can also be directly bonded to the coupler block 110 using an adhesive fixing member.

[0050] In some embodiments, the refractive index of the fixing glue 150 can be made greater than the refractive index of the buffer glue 120 to make the structure of the fixing glue 150 denser and harder, which is conducive to maintaining a stable position of the fixing section 131 relative to the coupler block 110.

[0051] like Figure 3 As shown, the coupler block 110 further includes a third surface 113 on a side facing away from the second surface 112. This third surface 113 defines a mounting hole 1131 that communicates with the end of the receiving groove 1111 away from the opening 1121. The fiber coupling assembly 100 may also include a focusing lens (not shown), at least a portion of which is mounted in the mounting hole 1131. The focusing lens is positioned opposite the end surface of the fixing section 131 away from the opening 1121. The focusing lens is configured to receive laser light and focus the laser light before transmitting it to the end surface. The focusing lens may be secured to the mounting hole 1131 by gluing or other means.

[0052] In this way, the input end of the focusing lens can be connected to the optical path of the laser emitting component of the laser, so that the laser emitted by the laser emitting component is transmitted to the focusing lens, and after being focused by the focusing lens, it is accurately transmitted to the end face of the fixed section 131 of the transmission optical fiber 130 away from the end of the opening 1121, so that the laser enters the transmission optical fiber 130 and is output from the other end of the transmission optical fiber 130.

[0053] An embodiment of the present application also provides a laser, which includes a fiber coupling assembly. The specific structure of the fiber coupling assembly refers to the above embodiment. Since this laser adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described one by one here.

[0054] In which, the laser (not shown in the figure) may include a laser emitting assembly (not shown in the figure) and an optical fiber coupling assembly 100, the laser emitting assembly is used to emit laser; the structure of the optical fiber coupling assembly 100 can refer to the above-mentioned embodiments, and the end face of the fixed section 131 of the transmission optical fiber 130 away from the opening 1121 is connected to the optical path of the laser reflection assembly, so that the laser emitted by the laser emitting assembly can be transmitted to the end face of the transmission optical fiber 130.

[0055] The laser provided in the embodiment of the present application is capable of isolating the transmission optical fiber 130 from at least part of the edge of the opening 1121 of the coupler block 110 of the optical fiber coupling assembly 100 by providing a buffer glue 120 at the opening 1121 of the coupler block 110, and positioning the buffer glue 120 between the outer peripheral surface of the fixed section 131 of the transmission optical fiber 130 and the bottom surface and / or inner surface of the receiving groove 1111. This reduces the risk that the transmission optical fiber 130 may be damaged or even broken due to contact between the edge of the opening 1121 and the transmission optical fiber 130, thereby reducing the risk that the transmission optical fiber 130 may be worn by the edge of the opening 1121.

[0056] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0057] The above is a detailed introduction to a fiber coupling assembly and a laser provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A fiber coupling assembly, characterized in that: include: A coupler block, wherein the coupler block has a first surface on one side along a first direction, the first surface is provided with a receiving groove extending along a second direction, the first direction and the second direction are arranged at an angle, the coupler block has a second surface on one side along the second direction, the receiving groove extends to the second surface and forms an opening on the second surface; a transmission optical fiber, comprising a fixed section and an extended section connected in sequence, wherein the fixed section is installed in the receiving groove and connected to the coupler block, and the extended section extends out of the second surface; Wherein, a buffer glue is provided at the opening of the accommodating groove, and the buffer glue is located between the outer peripheral surface of the fixing section and the bottom surface and / or inner side surface of the accommodating groove.

2. The optical fiber coupling assembly according to claim 1, wherein: The refractive index of the buffer glue is greater than or equal to 1.3 and less than or equal to 1.

5.

3. The optical fiber coupling assembly according to claim 1, wherein: The material of the buffer glue includes UV glue, and the buffer glue is bonded between the outer peripheral surface of the fixing section and the bottom surface and / or inner side surface of the accommodating groove.

4. The optical fiber coupling assembly according to claim 1, wherein: A portion of the buffer glue extends out from the second surface.

5. The optical fiber coupling assembly according to claim 1, wherein: The shrinkage rate of the buffer glue is greater than or equal to 1% and less than or equal to 5%.

6. The optical fiber coupling assembly according to claim 1, wherein: The elongation of the buffer rubber is greater than or equal to 50%.

7. The optical fiber coupling assembly according to any one of claims 1 to 6, wherein: The optical fiber coupling assembly further includes a fixing glue, which is located on a side of the buffer glue away from the opening along the first direction. At least a portion of the fixing glue is located in the receiving groove and fixedly connects the fixing section and the coupler block.

8. The optical fiber coupling assembly according to claim 7, wherein: The refractive index of the fixing glue is greater than the refractive index of the buffer glue.

9. The optical fiber coupling assembly according to any one of claims 1 to 6, wherein: The coupler block further comprises a third surface on a side facing away from the second surface; the third surface is provided with a mounting hole communicating with an end of the receiving groove away from the opening; The optical fiber coupling assembly also includes a focusing lens, at least part of which is installed in the mounting hole. The focusing lens is arranged opposite to the end face of the fixing section away from the opening end. The focusing lens is used to receive laser light and focus the laser light before transmitting it to the end face.

10. A laser, characterized in that: The laser comprises: A laser emitting component, used for emitting laser; The optical fiber coupling assembly is the optical fiber coupling assembly according to any one of claims 1 to 9, wherein the end face of the fixed section of the optical fiber coupling assembly away from the open end is in optical communication with the laser reflecting assembly.

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