Fiber cladding light stripper

Abstract

The utility model relates to the technical field of optical fiber, propose a kind of optical fiber cladding light stripper, for the stripping section of stripping cladding on optical fiber carries out the stripping of cladding light, the optical fiber cladding light stripper includes quartz tube, heat sink base and heat sink cover plate;The surface of quartz tube is roughened, quartz tube is sleeved in the outer periphery of stripping section, and optical fiber is worn out from the opening of both ends of quartz tube;Heat sink base has the mounting surface for placing quartz tube;Heat sink cover plate is covered on heat sink base, and heat sink cover plate has the butt joint surface towards mounting surface, quartz tube is located between mounting surface and butt joint surface, and butt joint surface and mounting surface all have black surface layer.The utility model can solve the heating problem of the sealing glue mouth at both ends of quartz tube caused by cladding light in the stripping process of optical fiber cladding light.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber technology, and in particular to an optical fiber cladding stripper. Background Technology

[0002] Fiber lasers possess numerous advantages, including high beam quality, high efficiency, simple structure, and high stability, and are widely used in laser communication, medical instruments, aerospace precision machining, and automotive manufacturing. High-power fiber lasers often require pump light to be injected into the fiber cladding and pass through the fiber core multiple times to achieve high optical conversion efficiency. When the pump light passes through the gain fiber, it cannot be fully absorbed by the active fiber, resulting in some pump light continuing to propagate in the cladding. Furthermore, due to grating bandwidth and splicing issues, some higher-order modes propagate in the cladding, severely impacting the laser's beam quality. Therefore, the removal of pump light and higher-order modes from the cladding is crucial.

[0003] To remove pump light and higher-order mode signal light from the cladding, the cladding structure of the optical fiber is typically destroyed by etching or laser spotting, allowing the cladding light to be stripped out at that location. A quartz tube is then placed at this location, and the two ends of the quartz tube are sealed with UV adhesive. Finally, a metal cover plate is used to fix the prepared stripper in the laser heat sink.

[0004] However, when the cladding light is scattered from the corrosion or dotting points, some of it will travel along the quartz tube to the sealing joints at both ends of the quartz tube, where the adhesive will absorb the light and generate heat. The other part will pass through the quartz tube and shine on the metal panel, and after being reflected by the metal panel, it will be transmitted to the sealing joints at both ends of the quartz tube again, which will also cause heat generation. The heating of the sealing joints at both ends of the quartz tube will reduce the sealing effect and lead to equipment failure. Utility Model Content

[0005] The purpose of this invention is to provide an optical fiber cladding stripper that solves the problem of heat generation at the sealing joints at both ends of the quartz tube caused by cladding light during the optical fiber cladding stripping process.

[0006] The above-mentioned technical objectives of this utility model are mainly achieved through the following technical solutions:

[0007] This utility model provides an optical fiber cladding light stripper for stripping cladding light from a stripping section on an optical fiber. The optical fiber cladding light stripper includes:

[0008] A quartz tube with a roughened surface is fitted around the outer periphery of the stripping section, and the optical fiber extends from the openings at both ends of the quartz tube.

[0009] A heat sink base having a mounting surface for placing the quartz tube;

[0010] A heat sink cover plate is provided on the heat sink base. The heat sink cover plate has a mating surface facing the mounting surface. The quartz tube is disposed between the mounting surface and the mating surface. Both the mating surface and the mounting surface have a black surface layer.

[0011] The fiber cladding stripper of this invention roughens the quartz tube used for encapsulation. After roughening, the quartz tube can no longer act as a waveguide structure to transmit the scattered cladding light to the glue ports at both ends of the quartz tube, thereby avoiding the glue from absorbing light and generating heat.

[0012] The fiber cladding stripper of this invention places the quartz tube used for encapsulation inside a metal housing formed by a heat sink base and a heat sink cover. The mating and mounting surfaces of the heat sink base and the heat sink cover opposite to the quartz tube have a black surface layer. In this way, the cladding light irradiated by the quartz tube onto the black surface layer will be absorbed after multiple scatterings, preventing the light from being transmitted to the glue joints at both ends of the quartz tube, thereby avoiding the glue from generating heat due to light absorption.

[0013] In a preferred embodiment of the present invention, the two ends of the quartz tube extend from both sides of the heat sink base.

[0014] In this embodiment, the glue outlets at both ends of the quartz tube are positioned outside the heat sink base to prevent cladding light scattered between the heat sink base and the heat sink cover from illuminating the glue outlets.

[0015] In a preferred embodiment of the present invention, a plurality of first oblique ribs are formed on the mounting surface by protrusion or recess, and the plurality of first oblique ribs are spaced apart along the length direction of the quartz tube, and the quartz tube is placed on each of the first oblique ribs.

[0016] In this embodiment, the arrangement of multiple first oblique ribs can increase the number of scatterings of cladding light inside the heat sink, so that the cladding light can be absorbed quickly. Multiple first oblique ribs can also enhance the heat dissipation capacity of the heat sink (increase the contact area with cladding light) and increase the power handling capacity of the heat sink.

[0017] In a preferred embodiment of the present invention, each of the first inclined ribs is provided with a mounting groove, and the plurality of mounting grooves are located on the same straight line, and the quartz tube is placed in the plurality of mounting grooves.

[0018] In this embodiment, the mounting slot facilitates the positioning and installation of the quartz tube, ensuring that the quartz tube does not shift during the cladding removal process.

[0019] In a preferred embodiment of the present invention, the side of the first oblique rib has the black surface layer.

[0020] In this embodiment, the side of the first oblique rib also has a black surface layer. The cladding light that shines on the black surface layer through the quartz tube will be absorbed after multiple scatterings, preventing the light from being transmitted to the glue outlets at both ends of the quartz tube, thereby preventing the glue from generating heat due to light absorption.

[0021] In a preferred embodiment of this invention, the thickness of the first oblique rib is greater than the thickness of the sidewall of the quartz tube.

[0022] In a preferred embodiment of the present invention, a plurality of second oblique ribs are formed on the mating surface by protrusion or recess, and the plurality of second oblique ribs are spaced apart along the length direction of the quartz tube, and the quartz tube is located between the first oblique ribs and the second oblique ribs.

[0023] In this embodiment, the arrangement of multiple second oblique ribs can increase the number of scatterings of cladding light inside the heat sink, allowing the cladding light to be absorbed quickly. The multiple second oblique ribs can also enhance the heat dissipation capacity of the heat sink (increase the contact area with the cladding light) and increase the power handling capacity of the heat sink.

[0024] In a preferred embodiment of the present invention, the side surface of the second oblique rib has the black surface layer.

[0025] In this embodiment, the side of the second oblique rib also has a black surface layer. The cladding light that shines on the black surface layer through the quartz tube will be absorbed after multiple scatterings, preventing the light from being transmitted to the glue outlets at both ends of the quartz tube, thereby preventing the glue from generating heat due to light absorption.

[0026] In a preferred embodiment of this invention, the thickness of the second oblique rib is greater than the thickness of the sidewall of the quartz tube.

[0027] In a preferred embodiment of this invention, the black surface layer is a black coating formed by coating or a black oxide layer formed by oxidation.

[0028] In a preferred embodiment of this utility model, the length of the quartz tube is less than 20cm. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0030] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances.

[0031] Figure 1 This is a schematic diagram of the stripping section for removing the cladding and coating layers from the optical fiber described in this utility model;

[0032] Figure 2 This is a schematic diagram of the structure of the quartz tube sleeved around the outer periphery of the stripping section according to the present invention;

[0033] Figure 3 This is a structural model diagram of the heat sink base and the heat sink cover plate of this utility model;

[0034] Figure 4 This is a structural model diagram of the optical fiber cladding stripper described in this utility model;

[0035] Figure 5 This is a cross-sectional view of the optical fiber cladding stripper described in this utility model.

[0036] Explanation of reference numerals in the attached figures:

[0037] 10. Optical fiber; 11. Coating layer; 12. Cladding layer; 13. Stripped section;

[0038] 20. Quartz tube;

[0039] 30. Heat sink base; 31. First inclined rib; 32. Mounting surface;

[0040] 40. Heat sink cover plate; 41. Second oblique rib; 42. Butt joint surface. Detailed Implementation

[0041] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0042] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0044] like Figures 1 to 4 As shown, this utility model provides an optical fiber cladding stripper for stripping cladding light from a stripping section 13 on an optical fiber 10 where the cladding 12 and coating 11 are stripped. The optical fiber cladding stripper includes a quartz tube 20, a heat sink base 30, and a heat sink cover plate 40. The surface of the quartz tube 20 is roughened, and the quartz tube 20 is fitted around the outer periphery of the stripping section 13. The optical fiber 10 passes through the openings at both ends of the quartz tube 20. The heat sink base 30 has a mounting surface 32 for placing the quartz tube 20. The heat sink cover plate 40 is placed on the heat sink base 30 and has a mating surface 42 facing the mounting surface 32. The quartz tube 20 is disposed between the mounting surface 32 and the mating surface 42. Both the mating surface 42 and the mounting surface 32 have a black surface layer.

[0045] The fiber cladding stripper of this invention roughens the quartz tube 20 used for encapsulation. After roughening, the quartz tube 20 can no longer act as a waveguide structure to transmit the scattered cladding light to the glue ports at both ends of the quartz tube 20, thereby avoiding the glue from absorbing light and generating heat.

[0046] The fiber cladding stripper of this invention places the quartz tube 20 used for encapsulation inside a metal housing formed by a heat sink base 30 and a heat sink cover plate 40. The mating surface 42 and mounting surface 32 on the heat sink base 30 and the heat sink cover plate 40, which are respectively opposite to the quartz tube 20, have a black surface layer. In this way, the cladding light irradiated by the quartz tube 20 onto the black surface layer will be absorbed after multiple scatterings, preventing the light from being transmitted to the glue outlets at both ends of the quartz tube 20, thereby avoiding the glue from generating heat due to light absorption.

[0047] The following section will provide a detailed description of the specific structure of each part of the optical fiber cladding stripper described in this utility model, as well as the position and connection relationship between each part.

[0048] First, the structure of optical fiber 10 will be explained, such as... Figure 1 As shown, the outer periphery of the optical fiber 10 is provided with a cladding 12, and the outer periphery of the cladding 12 is coated with a coating layer 11. In order to remove the cladding light inside the optical fiber 10, it is necessary to destroy the cladding structure (including the cladding 12 and the coating layer 11) of the optical fiber 10 by means of etching or laser dotting, so that the cladding light is stripped out at that position, thereby forming a stripped section 13 on the optical fiber 10 after the cladding 12 and the coating layer 11 have been removed.

[0049] The optical fiber cladding stripper of this invention includes a quartz tube 20, such as... Figure 2 As shown, a quartz tube 20 is fitted around the stripped section 13 of the optical fiber 10, and the optical fiber 10 extends from both ends of the quartz tube 20. The optical fiber 10 located at both ends of the quartz tube 20 has a cladding structure (with a cladding layer 12 and a coating layer 11). The openings at both ends of the quartz tube 20 are encapsulated with UV adhesive, sealing the optical fiber 10 and the quartz tube 20 together. The surface of the quartz tube 20 is roughened to form a roughened layer.

[0050] Preferably, the length of the quartz tube 20 is less than 20 cm, and the quartz tube 20 is formed with a local periodic texturing treatment to form a texturing layer.

[0051] The fiber cladding stripper of this utility model also includes a heat sink structure formed by a heat sink base 30 and a heat sink cover plate 40, such as Figures 3 to 5 As shown, the quartz tube 20 is installed inside the heat sink structure. The heat sink structure formed by the heat sink base 30 and the heat sink cover plate 40 is a commonly used heat dissipation device in the field. Its basic function is to effectively dissipate heat from the heat source through thermally conductive materials and heat sinks, thereby maintaining the stable operation of the equipment. The heat dissipation structure inside the heat sink base 30 and the heat sink cover plate 40 will not be described in detail here.

[0052] like Figure 5 As shown, the heat sink base 30 has a mounting surface 32 for placing the quartz tube 20, and the mounting surface 32 is arranged facing upward; the heat sink cover plate 40 is covered on the heat sink base 30, and the heat sink cover plate 40 has a mating surface 42 facing the mounting surface 32, and the mating surface 42 is arranged facing downward. The mating surface 42 and the mounting surface 32 are vertically opposite each other, and the quartz tube 20 is disposed between the mounting surface 32 and the mating surface 42.

[0053] Furthermore, both the mating surface 42 and the mounting surface 32 have a black surface layer, which is either a black coating formed by coating or a black oxide layer formed by oxidation. The coating material can be graphene.

[0054] The structure and technical effects of the preferred embodiment of the optical fiber cladding stripper of this utility model will be described below.

[0055] According to one embodiment of the present invention, such as Figure 4 As shown, the openings at both ends of the quartz tube 20 extend from both sides of the heat sink base 30. The glue outlets at both ends of the quartz tube 20 are positioned on the outside of the heat sink base 30 to prevent the cladding light scattered between the heat sink base 30 and the heat sink cover plate 40 from being scattered to the glue outlets.

[0056] According to one embodiment of the present invention, such as Figures 3 to 5 As shown, a plurality of first oblique ribs 31 are protruding or recessed on the mounting surface 32 of the heat sink base 30. The plurality of first oblique ribs 31 are spaced apart along the length direction of the quartz tube 20, and the quartz tube 20 is placed on each of the first oblique ribs 31.

[0057] The arrangement of multiple first oblique ribs 31 can increase the number of scattering of cladding light in the heat sink structure, so that the cladding light can be absorbed quickly. Multiple first oblique ribs 31 can also enhance the heat dissipation capacity of the heat sink structure (increase the contact area with cladding light) and increase the power carrying capacity of the heat sink structure.

[0058] Specifically, such as Figure 5 As shown, in this embodiment, multiple first oblique ribs 31 are formed by creating grooves. Multiple grooves are spaced apart on the mounting surface 32 along the length of the quartz tube 20, with the first oblique ribs 31 formed between adjacent grooves. The quartz tube 20 is placed on these first oblique ribs 31. The length of the grooves along the length of the quartz tube 20 is the same as the length of the stripped section 13 on the optical fiber 10, and their positions correspond. The thickness of the first oblique ribs 31 is greater than the sidewall thickness of the quartz tube 20.

[0059] Furthermore, each of the first inclined ribs 31 is provided with a mounting groove, and multiple mounting grooves are located on the same straight line. The quartz tube 20 is placed in multiple mounting grooves. The mounting grooves facilitate the positioning and installation of the quartz tube 20, ensuring that the quartz tube 20 does not shift during the cladding removal process.

[0060] Preferably, the side surface of the first oblique rib 31 has a black surface layer. The molding method of the black surface layer on the first oblique rib 31 is the same as that of the black surface layer on the mounting surface 32, and the black surface layers on both can be molded in the same process step. The side surface of the first oblique rib 31 also has a black surface layer. The cladding light irradiated onto the black surface layer by the quartz tube 20 will be absorbed after multiple scattering, preventing the light from being transmitted to the glue outlets at both ends of the quartz tube 20, thereby avoiding the glue from generating heat due to light absorption.

[0061] According to one embodiment of the present invention, such as Figures 3 to 5As shown, a plurality of second oblique ribs 41 are protruding or recessed on the mating surface 42 of the heat sink cover plate 40. The plurality of second oblique ribs 41 are spaced apart along the length direction of the quartz tube 20, and the quartz tube 20 is located between the first oblique rib 31 and the second oblique rib 41.

[0062] The arrangement of multiple second oblique ribs 41 can increase the number of scatterings of cladding light in the heat sink structure, so that the cladding light can be absorbed quickly. Multiple second oblique ribs 41 can also enhance the heat dissipation capacity of the heat sink structure (increase the contact area with cladding light) and increase the power carrying capacity of the heat sink structure.

[0063] Specifically, such as Figure 5 As shown, in this embodiment, multiple second oblique ribs 41 are formed by opening grooves. The structure of the second oblique ribs 41 is basically the same as that of the first oblique ribs 31, and will not be described in detail here. The thickness of the second oblique ribs 41 is greater than the side wall thickness of the quartz tube 20.

[0064] Furthermore, each of the second inclined ribs 41 is also provided with an installation groove, and the installation grooves on each of the second inclined ribs 41 are located on the same straight line. The installation grooves on the first inclined rib 31 and the installation grooves on the second inclined rib 41 are connected vertically to form an installation channel, and the quartz tube 20 is placed in the installation channel.

[0065] Preferably, the side surface of the second oblique rib 41 has a black surface layer. The molding method of the black surface layer on the second oblique rib 41 is the same as that of the black surface layer on the mating surface 42, and the black surface layers on both can be molded in the same process step. The side surface of the second oblique rib 41 also has a black surface layer. The cladding light irradiated onto the black surface layer by the quartz tube 20 will be absorbed after multiple scatterings, preventing the light from being transmitted to the glue outlets at both ends of the quartz tube 20, thereby preventing the glue from generating heat due to light absorption.

[0066] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A fiber cladding light stripper, used to strip cladding light from the stripping section (13) of the stripping segment (12) on an optical fiber (10), characterized in that, The fiber cladding stripper includes: A quartz tube (20) with a roughened surface is fitted around the outer periphery of the stripped section (13), and the optical fiber (10) extends out from the openings at both ends of the quartz tube (20). Heat sink base (30), the heat sink base (30) having a mounting surface (32) for placing the quartz tube (20); A heat sink cover plate (40) is placed on the heat sink base (30). The heat sink cover plate (40) has a mating surface (42) facing the mounting surface (32). The quartz tube (20) is disposed between the mounting surface (32) and the mating surface (42). Both the mating surface (42) and the mounting surface (32) have a black surface layer.

2. The fiber cladding stripper according to claim 1, characterized in that, The two ends of the quartz tube (20) extend from both sides of the heat sink base (30).

3. The optical fiber cladding stripper according to claim 1, characterized in that, The mounting surface (32) is provided with a plurality of first oblique ribs (31) protruding or recessed, and the plurality of first oblique ribs (31) are spaced apart along the length direction of the quartz tube (20), and the quartz tube (20) is placed on each of the first oblique ribs (31).

4. The optical fiber cladding stripper according to claim 3, characterized in that, Each of the first inclined ribs (31) is provided with an installation groove, and the multiple installation grooves are located on the same straight line. The quartz tube (20) is placed in the multiple installation grooves.

5. The fiber cladding stripper according to claim 3, characterized in that, The side of the first oblique rib (31) has the black surface layer.

6. The optical fiber cladding stripper according to claim 3, characterized in that, The thickness of the first oblique rib (31) is greater than the sidewall thickness of the quartz tube (20).

7. The optical fiber cladding stripper according to claim 3, characterized in that, The mating surface (42) is provided with a plurality of second oblique ribs (41) protruding or recessed, and the plurality of second oblique ribs (41) are spaced apart along the length direction of the quartz tube (20), and the quartz tube (20) is located between the first oblique rib (31) and the second oblique ribs (41).

8. The optical fiber cladding stripper according to claim 7, characterized in that, The side of the second oblique rib (41) has the black surface layer.

9. The optical fiber cladding stripper according to claim 7, characterized in that, The thickness of the second oblique rib (41) is greater than the sidewall thickness of the quartz tube (20).

10. The optical fiber cladding stripper according to claim 1, characterized in that, The black surface layer is either a black coating formed by coating or a black oxide layer formed by oxidation.

11. The optical fiber cladding stripper according to claim 1, characterized in that, The length of the quartz tube (20) is less than 20cm.

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