Texturing composition combination, cladding light stripper and preparation methods of texturing composition combination and cladding light stripper

Abstract

The invention relates to a texturing composition combination, a cladding light stripper and preparation methods of the texturing composition combination and the cladding light stripper, and belongs to the technical field of lasers, the texturing composition combination comprises a first composition and a second composition, and the first composition and the second composition are kept separated from each other until being used, the first composition is a mixture comprising a metal salt, a fluoride salt, barium sulfate and a first acid solution, and the second composition is a mixture comprising a second acid solution and an ammonium fluoride solution, thereby providing a texturing composition combination suitable for preparing a cladding light stripper, and the cladding light stripper prepared by the texturing composition has the advantages of wide applicability, good environmental measurement resistance, high long-term working stability and the like, the cladding light stripping efficiency and tensile strength are controllable and adjustable, and the application direction is wide.

Description

Technical Field

[0001] The present application relates to the field of laser technology, and in particular to a roughening composition combination, a cladding light stripper, and methods for preparing the two. Background Art

[0002] In high-power all-fiber lasers, the cladding structure of double-clad optical fibers inevitably contains residual pump light, amplified spontaneous radiation, and signal light leaked due to factors such as non-ideal fusion or fiber bending. These cladding lights will deteriorate the beam quality of the output laser and even damage the semiconductor pump source and other optical fiber devices in the laser system, such as collimators, signal couplers, and pump couplers, seriously affecting the stability of the laser. Therefore, how to reliably and efficiently strip the cladding light from the cladding waveguide is one of the key issues in the development of high-power all-fiber lasers.

[0003] At present, the basic principle of stripping cladding light from the optical fiber cladding is to destroy the total reflection condition of cladding light transmission, so that the cladding light is refracted or scattered out of the inner cladding. The cladding light stripper is a passive device used to filter out the optical fiber cladding light, and its conventional production methods include coating the optical fiber cladding with high-refraction resin, laser etching, chemical treatment, etc.

[0004] However, the cladding light stripper manufactured by the existing manufacturing method has problems of poor applicability and low long-term working stability, which need to be solved. Summary of the invention

[0005] The purpose of the present application is to provide a roughening composition combination, a cladding light stripper and methods for preparing the two, so as to provide a roughening composition combination suitable for preparing a cladding light stripper, and the cladding light stripper prepared by the roughening composition combination has the advantages of wide applicability, good environmental resistance, high long-term working stability, etc.

[0006] An embodiment of the present application provides a texturizing composition combination, which includes a first composition and a second composition, and the first composition and the second composition are kept separate from each other until use; wherein the first composition is a mixture comprising a metal salt, a fluoride salt, barium sulfate and a first acid solution; and the second composition is a mixture comprising a second acid solution and an ammonium fluoride solution.

[0007] Among them, the mass fractions of the metal salt, the fluoride salt, the barium sulfate and the first acid solution in the first composition are 1% to 10%, 20% to 30%, 40% to 70% and 20% to 30% respectively; the mass fractions of the second acid solution and the ammonium fluoride solution in the second composition are 60% to 90% and 10% to 40% respectively.

[0008] The metal salt includes at least one of a sodium salt, a potassium salt and a barium salt.

[0009] The fluoride salt includes at least one of ammonium bifluoride, potassium bifluoride, sodium bifluoride, sodium fluoride, potassium fluoride, calcium fluoride and magnesium fluoride.

[0010] Wherein, the first acid solution and the second acid solution respectively include at least one of a hydrofluoric acid solution, a hydrochloric acid solution, a sulfuric acid solution and a nitric acid solution.

[0011] The embodiment of the present application further provides a method for preparing a hairy composite composition combination. The method for preparing a hairy composite composition combination is applied to prepare any of the hairy composite compositions described above, and comprises: preparing a first composition and a second composition respectively.

[0012] An embodiment of the present application also provides a method for preparing a cladding light stripper, which comprises: stripping off the coating layer of the optical fiber to form a cladding light stripping section; using any of the above-mentioned hairizing composition combinations to process the outer wall of the inner cladding in the cladding light stripping section to form an inner cladding hairizing section in which the total reflection characteristics of the inner cladding transmission interface are destroyed.

[0013] Among them, using any of the above-mentioned hairming composition combinations to treat the outer side wall of the inner cladding in the cladding light stripping section to form an inner cladding hairming section in which the total reflection characteristics of the inner cladding transmission interface are destroyed, including: using the first composition included in any of the above-mentioned hairming composition combinations to hairmash the outer side wall of the inner cladding in the cladding light stripping section to form an inner cladding hairming section containing crystals; using the second composition included in any of the above-mentioned hairming composition combinations to remove the crystals from the inner cladding hairming section containing crystals to form an inner cladding hairming section with an uneven structure.

[0014] The length of the cladding optical stripping section is 4 to 10 cm; the length of the inner cladding hairening section is 1 to 8 cm.

[0015] An embodiment of the present application further provides a cladding light stripper, which is manufactured using any of the above-mentioned methods for manufacturing a cladding light stripper.

[0016] The beneficial effects of the present application are as follows: the roughened composition combination in the embodiments of the present application can be applied to the production of a cladding light stripper, and the cladding light stripper produced by the roughened composition combination has the following advantages: wide applicability, no selective requirements on the diameter of the optical fiber; good ring test resistance, high temperature, low temperature, high and low temperature impact tests will not affect the performance of the product; the prepared product has irregular surface defects, which can better form diffuse reflection, so that the device has a lower temperature during use; the "slag falling" phenomenon that is easy to occur in the product after ring testing (i.e., the crystallization of the roughened section falls off) is reduced, so that the long-term working stability of the product is improved; and the cladding light stripping efficiency and tensile strength of the product are controllable and adjustable, and the product has a wide range of application directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0018] Figure 1 It is a schematic flow chart of a method for preparing a cladding light stripper provided in an embodiment of the present application;

[0019] Figure 2a to 2c It is a schematic diagram of the structure of the test optical path of the cladding light stripping efficiency provided in an embodiment of the present application;

[0020] Figure 3 It is a schematic diagram of the operation of testing the tensile strength of the inner cladding roughened section of the cladding light stripper provided in an embodiment of the present application;

[0021] Figure 4 This is a microscopic image of the inner cladding roughened section of the cladding light stripper prepared in Application Example 1 of the present application, magnified 1000 times;

[0022] Figure 5 This is a microscopic image of the inner cladding roughened section of the cladding light stripper prepared in Application Example 2 of the present application, magnified 1000 times;

[0023] Figure 6 This is a microscopic image of the inner cladding roughened section of the cladding light stripper prepared in Application Example 3 of the present application, magnified 1000 times;

[0024] Figure 7 This is a microscopic image of the inner cladding roughened section of the cladding light stripper prepared in Application Example 4 of the present application, magnified 1000 times. DETAILED DESCRIPTION

[0025] The present application is further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0026] In the following description of the present application, reference is made to “some embodiments”, which describe a subset of all possible embodiments, but it can be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0027] In the following description of the present application, the terms "first\second\third" involved are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged with a specific order or sequence where permitted, so that the embodiments of the present application described here can be implemented in an order other than that illustrated or described here.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0029] At present, the basic principle of stripping cladding light from the optical fiber cladding is to destroy the total reflection condition of cladding light transmission, so that the cladding light is refracted or scattered out of the inner cladding. The cladding light stripper is a passive device used to filter out the optical fiber cladding light, and its conventional production methods include coating the optical fiber cladding with high-refraction resin, laser etching, chemical treatment, etc.

[0030] Among them, the high-refractive index glue coating treatment on the optical fiber cladding is: after the outer cladding (i.e., coating layer) of the double-clad optical fiber is stripped, a layer of organic glue with a refractive index higher than that of the inner cladding is coated on the outer surface of the inner cladding in a single section or multiple sections. However, since the high-refractive index organic glue is an organic polymer with poor high-temperature resistance, the performance of the glue will change under long-term high-temperature conditions, which may lead to a decrease in refractive index, an increase in light absorption, and decomposition of the glue, thereby affecting the long-term working stability of the product.

[0031] Laser etching process is: through CO 2Laser or other pulsed lasers process the inner cladding of the optical fiber, forming regular or irregular pits on the surface of the inner cladding, that is, forming scattering conditions, so as to strip the cladding light out. However, in order to achieve a higher stripping effect, this treatment method usually requires a very deep etching depth and a long etching area, which will lead to a decrease in the tensile strength of the optical fiber. In addition, because the scattered light is regularly concentrated, it will also cause the device to heat up and affect its use. In addition, this treatment method is less applicable or cannot be used for optical fibers with small diameters.

[0032] Chemical treatment mainly uses glass frosting powder for treatment, but the cladding light stripper made by this treatment method has low cladding light stripping efficiency and is not suitable for high-power fiber lasers. It will also reduce the tensile strength of the optical fiber and is prone to "slag falling" after ring testing (i.e., the crystals in the roughened area fall off).

[0033] Therefore, it is necessary to find a suitable processing method to produce a cladding light stripper to solve the problems of poor applicability and low long-term working stability of the cladding light stripper produced by the existing cladding light stripper production method.

[0034] In view of the above problems, the embodiments of the present application provide a roughened composition combination, a cladding light stripper, and methods for preparing the two. The roughened composition combination is suitable for preparing a cladding light stripper, and includes a first composition and a second composition, and the first composition and the second composition are kept separate from each other until use, wherein the first composition is a mixture comprising a metal salt, a fluoride salt, barium sulfate, and a first acid solution, and the second composition is a mixture comprising a second acid solution and an ammonium fluoride solution. In addition, the cladding light stripper prepared by the roughened composition combination has the advantages of wide applicability, good ring test resistance, high long-term working stability, etc., and its cladding light stripping efficiency and tensile strength are controllable and adjustable, and its application direction is wide.

[0035] The following is a detailed description with reference to specific embodiments. It should be noted that the serial numbers of the following embodiments are not intended to limit the preferred order of the embodiments.

[0036] The embodiment of the present application provides a texturing composition combination, which includes a first composition and a second composition, and the first composition and the second composition are kept separate from each other until use. The first composition can be a mixture containing a metal salt, a fluoride salt, barium sulfate and a first acid solution, and the second composition can be a mixture containing a second acid solution and an ammonium fluoride solution.

[0037] In this embodiment, the above-mentioned hairline composition combination is suitable for preparing a cladding light stripper. Moreover, the first composition in the above-mentioned hairline composition combination can be in a paste or liquid state, and the second composition in the above-mentioned hairline composition combination can also be in a paste or liquid state. In this way, it is convenient to use the first composition in the above-mentioned hairline composition combination to hairline the cladding light stripping section of the optical fiber whose coating layer has been stripped to obtain a cladding light stripper, or it is convenient to use the first composition and the second composition in the above-mentioned hairline composition combination in sequence to treat the cladding light stripping section of the optical fiber whose coating layer has been stripped to obtain a cladding light stripper.

[0038] It should be noted that, compared with the scheme of preparing cladding light strippers by chemical treatment in the prior art, there is a problem that the prepared cladding light strippers are prone to "slag falling" after ring testing (i.e., the crystals in the roughened area fall off). In this embodiment, the cladding light strippers are prepared by roughening the cladding light stripping section of the optical fiber where the coating layer is stripped using the first composition in the above-mentioned roughening composition combination. Since the crystals formed during the roughening treatment are larger in size and less likely to fall off, the problem of the "slag falling" phenomenon of the prepared cladding light strippers after ring testing can be improved to a certain extent, so that the prepared cladding light strippers can meet the needs of long-term use and improve the stability of use.

[0039] Moreover, in the present embodiment, the cladding light stripper is obtained by roughening the cladding light stripping section of the optical fiber whose coating layer is stripped using the first composition in the above-mentioned roughening composition combination, and further treating the roughened section of the optical fiber using the second composition in the above-mentioned roughening composition combination, which can reduce the crystallization of the roughened section, thereby improving or solving to a greater extent the problem of the "crushing" phenomenon of the prepared cladding light stripper after ring testing, so that the prepared cladding light stripper can better meet the needs of long-term use and more effectively improve the stability of use.

[0040] In some embodiments, in the first composition, the mass fraction of the metal salt may be 1% to 10%, the mass fraction of the fluoride salt may be 20% to 30%, the mass fraction of barium sulfate may be 40% to 70%, and the mass fraction of the first acid solution may be 20% to 30%.

[0041] In some embodiments, in the second composition, the mass fraction of the second acid solution may be 60% to 90%, and the mass fraction of the ammonium fluoride solution may be 10% to 40%.

[0042] In some embodiments, in the first composition, the metal salt may include at least one of a sodium salt, a potassium salt, and a barium salt, for example, specifically sodium chloride (NaCl), sodium carbonate (Na 2 CO3 ), sodium sulfate (Na 2 SO 4 ), sodium bicarbonate (NaHCO 3 ), sodium nitrate (NaNO 3 ), sodium thiosulfate (Na 2 S 2 O 3 ), potassium chloride (KCl), potassium carbonate (K 2 CO 3 ), potassium sulfate (K 2 SO 4 ), potassium nitrate (KNO 3 ), barium chloride (BaCl 2 ), barium sulfide (BaS), sodium fluorosilicate (Na 2 SiF 6 ) and sodium fluoroborate (NaBF 4 ) at least one of.

[0043] In some embodiments, in the first composition, the fluoride salt may include ammonium bifluoride (NH 4 HF 2 ), potassium bifluoride (KHF 2 ), sodium bifluoride (NaHF 2 ), sodium fluoride (NaF), potassium fluoride (KF), calcium fluoride (CaF 2 ) and magnesium fluoride (MgF 2 ) at least one of.

[0044] In some embodiments, in the first composition, the first acid solution may include at least one of a hydrofluoric acid solution, a hydrochloric acid solution, a sulfuric acid solution, and a nitric acid solution. In the second composition, the first acid solution may also include at least one of a hydrofluoric acid solution, a hydrochloric acid solution, a sulfuric acid solution, and a nitric acid solution. Furthermore, the concentrations of the hydrofluoric acid solution, the hydrochloric acid solution, the sulfuric acid solution, and the nitric acid solution may be different.

[0045] In some specific embodiments, the first composition in the above-mentioned texturing composition combination can be specifically a mixture of a metal salt, a fluoride salt, barium sulfate and a first acid solution.

[0046] In some examples, the first composition in the above-mentioned texturing composition combination can be a mixture of potassium chloride, ammonium bifluoride, barium sulfate and hydrofluoric acid solution, for example, it can be a mixture of 5g potassium chloride, 20g ammonium bifluoride, 40g barium sulfate and 15g hydrofluoric acid solution.

[0047] In other examples, the first composition in the above-mentioned texturing composition combination can be a mixture of sodium fluorosilicate, ammonium bifluoride, barium sulfate and hydrofluoric acid solution, for example, it can be a mixture of 5g sodium fluorosilicate, 20g ammonium bifluoride, 35g barium sulfate and 20g hydrofluoric acid solution.

[0048] In other examples, the first composition in the above-mentioned texturizing composition combination can be a mixture of potassium chloride, sodium chloride, ammonium bifluoride, barium sulfate and hydrofluoric acid solution, for example, it can be a mixture of 2g potassium chloride, 3g sodium chloride, 20g ammonium bifluoride, 35g barium sulfate and 25g hydrofluoric acid solution.

[0049] In some specific embodiments, the second composition in the above-mentioned texturing composition combination can be specifically a mixture of a second acid solution and an ammonium fluoride solution.

[0050] In some examples, the second composition in the above-mentioned texturizing composition combination can be a mixture of hydrofluoric acid solution and ammonium fluoride solution, for example, it can be a mixture of 30g hydrofluoric acid solution with a solute mass fraction of 40% and 10g ammonium fluoride solution with a solute mass fraction of 40%.

[0051] In other examples, the second composition in the above-mentioned texturizing composition combination can be a mixture of sulfuric acid solution and ammonium fluoride solution, for example, it can be a mixture of 30g sulfuric acid solution with a solute mass fraction of 40% and 20g ammonium fluoride solution with a solute mass fraction of 40%.

[0052] In other examples, the second composition included in the above-mentioned texturizing composition combination can be a mixture of hydrofluoric acid solution, sulfuric acid solution and ammonium fluoride solution, for example, it can be specifically a mixture of 30g of hydrofluoric acid solution with a solute mass fraction of 40%, 20g of sulfuric acid solution with a solute mass fraction of 40% and 10g of ammonium fluoride solution with a solute mass fraction of 40%.

[0053] As can be seen from the above, the hairizing composition combination provided in the embodiment of the present application includes a first composition and a second composition, and the first composition and the second composition are kept separate from each other until use, wherein the first composition is a mixture comprising a metal salt, a fluoride salt, barium sulfate and a first acid solution, and the second composition is a mixture comprising a second acid solution and an ammonium fluoride solution, thereby providing a hairizing composition combination suitable for preparing a cladding light stripper, and the cladding light stripper prepared by the hairizing composition combination has the advantages of wide applicability, good ring test resistance, and high long-term working stability.

[0054] In order to better implement the hairy composite combination provided in the embodiment of the present application, the embodiment of the present application also provides a method for preparing the hairy composite combination, and the method for preparing the hairy composite combination is applied to prepare the hairy composite combination provided in any of the above embodiments. Specifically, the specific process of the method for preparing the hairy composite combination can be as follows:

[0055] The first composition and the second composition are prepared separately.

[0056] Furthermore, it should be noted that the specific composition of the hairy composite combination in this embodiment can refer to the specific implementation manner in the above-mentioned embodiment of the hairy composite combination, so it will not be described in detail here.

[0057] In some embodiments, the preparation process of the above-mentioned first composition may include: weighing metal salt, fluoride salt and barium sulfate, and stirring and dispersing the weighed metal salt, fluoride salt and barium sulfate evenly, then weighing the first acid solution and adding it to the stirred and dispersed metal salt, fluoride salt and barium sulfate, stirring evenly, and fully maturing to obtain a usable first composition.

[0058] Moreover, in the specific implementation, the metal salt, fluoride salt and barium sulfate can be accurately weighed by an electronic balance (weighing accuracy ≥ 0.01g) and added to a Teflon container with a sealing lid, and the weighed metal salt, fluoride salt and barium sulfate can be stirred and dispersed evenly by a stirrer, and then the first acid solution is accurately weighed and added to the stirred and dispersed metal salt, fluoride salt and barium sulfate, and the stirring is continued to be uniformly stirred by the stirrer, and then sealed with a sealing lid, and left to mature at room temperature for more than 2 hours, so as to obtain a usable first composition.

[0059] In some embodiments, the preparation process of the second composition may include: weighing a second acid solution and an ammonium fluoride solution, stirring and mixing the weighed second acid solution and ammonium fluoride solution evenly, and sealing and storing them to obtain a usable second composition.

[0060] Furthermore, in specific implementation, the second acid solution and the ammonium fluoride solution can be accurately weighed according to the required concentration and mass ratio and added into a plastic container, and then stirred and mixed evenly with a stirrer, and sealed and stored to obtain a usable second composition.

[0061] Furthermore, for ease of understanding, the preparation method of the hairy composition combination provided in the embodiments of the present application is further described in detail below through three specific embodiments (ie, Embodiment 1, Embodiment 2 and Embodiment 3).

[0062] Example 1

[0063] In Example 1, the specific process of the preparation method of the hairy composition combination can be as follows:

[0064] Step S11. preparing a first composition, comprising: accurately weighing 5 g of potassium chloride, 20 g of ammonium bifluoride and 40 g of barium sulfate with an electronic balance in a fume hood, adding them to a Teflon bottle with a sealing lid, and stirring and dispersing them evenly with a stirrer, then accurately weighing 15 g of hydrofluoric acid solution and adding them thereto, and continuing to stir with the stirrer to mix all the substances evenly, then covering the bottle with a lid to achieve sealing, and allowing the bottle to stand and mature at room temperature for more than 2 hours, thereby obtaining a usable first composition.

[0065] Step S12. preparing a second composition, comprising: weighing 30 g of a hydrofluoric acid solution with a solute mass fraction of 40% and 10 g of an ammonium fluoride solution with a solute mass fraction of 40% in a fume hood, respectively, adding them into a plastic bottle with a sealed lid, then stirring and mixing them evenly with a stirrer, and sealing and storing, to obtain a usable second composition.

[0066] Example 2

[0067] In Example 2, the specific process of the preparation method of the hairy composition combination can be as follows:

[0068] Step S21. preparing a first composition, comprising: accurately weighing 5 g of sodium fluorosilicate, 20 g of ammonium bifluoride and 35 g of barium sulfate with an electronic balance in a fume hood, adding them to a Teflon bottle with a sealing lid, and stirring and dispersing them evenly with a stirrer, then accurately weighing 20 g of hydrofluoric acid solution and adding it thereto, and continuing to stir with the stirrer to mix all the substances evenly, then covering the bottle with a lid to achieve sealing, and allowing the bottle to stand and mature at room temperature for more than 2 hours, thereby obtaining a usable first composition.

[0069] Step S22. preparing a second composition, comprising: weighing 30 g of a sulfuric acid solution having a solute mass fraction of 40% and 20 g of an ammonium fluoride solution having a solute mass fraction of 40% in a fume hood, respectively, adding them into a plastic bottle with a sealed lid, then stirring and mixing them evenly with a stirrer, and sealing and storing, to obtain a usable second composition.

[0070] Example 3

[0071] In Example 3, the specific process of the preparation method of the hairy composition combination can be as follows:

[0072] Step S31. Prepare a first composition, including: accurately weighing 2g of potassium chloride, 3g of sodium chloride, 20g of ammonium bifluoride and 35g of barium sulfate with an electronic balance in a fume hood, adding them to a Teflon bottle with a sealing lid, and stirring and dispersing them evenly with a stirrer, then accurately weighing 25g of hydrofluoric acid solution and adding it thereto, and continuing to stir with the stirrer to mix all the substances evenly, then covering the lid to achieve sealing, and letting it stand and mature at room temperature for more than 2 hours to obtain a usable first composition.

[0073] Step S32. preparing a second composition, comprising: weighing 30 g of a hydrofluoric acid solution with a solute mass fraction of 40%, 20 g of a sulfuric acid solution with a solute mass fraction of 40%, and 10 g of an ammonium fluoride solution with a solute mass fraction of 40% in a fume hood, respectively, adding them into a plastic bottle with a sealed lid, then stirring and mixing them evenly with a stirrer, and sealing and storing, to obtain a usable second composition.

[0074] In addition, it should be noted that the raw materials used in this application can all be purchased from the market, and potassium chloride, sodium chloride, sodium fluorosilicate, ammonium bifluoride, barium sulfate, sulfuric acid solution, hydrofluoric acid solution, and ammonium fluoride solution are all analytical grade produced by Sinopharm Chemical Reagent Co., Ltd.

[0075] As can be seen from the above, the method for preparing the roughened composition combination provided in the embodiment of the present application is to prepare the first composition and the second composition separately, and the first composition and the second composition are kept separate from each other until use, wherein the first composition is a mixture comprising a metal salt, a fluoride salt, barium sulfate and a first acid solution, and the second composition is a mixture comprising a second acid solution and an ammonium fluoride solution, thereby preparing a roughened composition combination suitable for preparing a cladding light stripper, and the cladding light stripper prepared by the roughened composition combination has the advantages of wide applicability, good ring test resistance, and high long-term working stability.

[0076] Based on the hairing composition combination described in the above embodiments, this embodiment will be further described from the perspective of a method for preparing a cladding light stripper using the hairing composition combination.

[0077] See also Figure 1 , Figure 1 The schematic diagram of the process of preparing the cladding light stripper provided in the embodiment of the present application is shown in FIG. Figure 1 As shown, the specific process of the manufacturing method of the cladding light stripper can be as follows:

[0078] Step S101: stripping the coating layer of the optical fiber to form a cladding light stripping section.

[0079] In this embodiment, the optical fiber may include a core, an inner cladding and a coating, wherein the inner cladding is wrapped around the outside of the core, and the coating is wrapped around the outside of the inner cladding. Furthermore, the cladding optical stripping section refers to a section where the coating of the optical fiber is stripped.

[0080] Specifically, the coating stripping method in this embodiment is not limited. For example, the coating of the optical fiber can be stripped by heat stripping, blade stripping, wire stripping, or chemical reagent treatment to form a cladding light stripping section on the optical fiber, thereby facilitating the production of a cladding light stripping structure on the cladding light stripping section.

[0081] Step S102: using a hairizing composition combination to process the outer side wall of the inner cladding in the cladding light stripping section to form an inner cladding hairizing section in which the total reflection property of the inner cladding transmission interface is destroyed.

[0082] The hairing composition combination may be the hairing composition combination provided by any of the above embodiments. Moreover, the cladding light stripping section of the optical fiber may be haired using only the first composition in the hairing composition combination provided by any of the above embodiments to form an inner cladding hairing section in which the total reflection characteristics of the inner cladding transmission interface are destroyed, thereby obtaining a cladding light stripper; or, the first composition and the second composition in the hairing composition combination may be used in sequence to treat the cladding light stripping section of the optical fiber in which the coating layer is stripped, thereby forming an inner cladding hairing section in which the total reflection characteristics of the inner cladding transmission interface are destroyed, thereby obtaining a cladding light stripper.

[0083] It should be noted that, compared with the scheme of preparing cladding light strippers by chemical treatment in the prior art, there is a problem that the prepared cladding light strippers are prone to "slag falling" after ring testing (i.e., the crystals in the roughened area fall off). In this embodiment, the cladding light strippers are prepared by roughening the cladding light stripping section of the optical fiber where the coating layer is stripped using the first composition in the above-mentioned roughening composition combination. Since the crystals formed during the roughening treatment are larger in size and less likely to fall off, the problem of the "slag falling" phenomenon of the prepared cladding light strippers after ring testing can be improved to a certain extent, so that the prepared cladding light strippers can meet the needs of long-term use and improve the stability of use.

[0084] Moreover, in the present embodiment, the cladding light stripper is obtained by roughening the cladding light stripping section of the optical fiber whose coating layer is stripped using the first composition in the above-mentioned roughening composition combination, and further treating the roughened section of the optical fiber using the second composition in the above-mentioned roughening composition combination, which can reduce the crystallization of the roughened section, thereby improving or solving to a greater extent the problem of the "crushing" phenomenon of the prepared cladding light stripper after ring testing, so that the prepared cladding light stripper can better meet the needs of long-term use and more effectively improve the stability of use.

[0085] In some embodiments, the above step S102 may include:

[0086] Step S1021. Use the first composition included in the hairing composition combination to hairline the outer wall of the inner cladding in the cladding light stripping section to form an inner cladding hairline section.

[0087] Specifically, after the cladding light stripping section is formed, the cladding light stripping section of the optical fiber can be wiped clean with dust-free paper dipped in acetone or alcohol, and then the first composition in the hairizing composition combination provided in any of the above embodiments can be used to hairize the outer wall of the inner cladding in the cladding light stripping section of the optical fiber for a period of time to form at least one inner cladding hairizing section in the cladding light stripping section.

[0088] The inner cladding roughened section refers to a section of the cladding optical stripping section where the outer wall of the inner cladding is roughened.

[0089] Specifically, the length of the inner cladding hair section may be shorter than the length of the cladding light stripping section. Exemplarily, the length of the cladding light stripping section may be 4 to 10 cm, and the length of the inner cladding hair section may be 1 to 8 cm.

[0090] In some specific embodiments, the inner cladding roughening section may contain crystals, which are formed by a chemical reaction between the first composition and the material in the outer wall of the inner cladding during the roughening treatment of the outer wall of the inner cladding in the cladding light stripping section of the optical fiber using the first composition.

[0091] Furthermore, after the above step S1021, the above step S102 may further include:

[0092] Step S1022: using the second composition included in the texturing composition combination to remove the crystals from the inner cladding texturing section containing crystals, so as to form an inner cladding texturing section having an uneven structure.

[0093] Specifically, after forming the inner cladding roughened section containing crystals, the inner cladding roughened section containing crystals can be rinsed clean with deionized water, and the water on the rinsed inner cladding roughened section containing crystals can be gently wiped and absorbed with dust-free paper, and then the second composition in the roughened composition combination provided in any of the above embodiments can be used to treat the inner cladding roughened section containing crystals for a period of time, so that the crystals in the inner cladding roughened section containing crystals are removed, thereby forming an inner cladding roughened section with a unique uneven structure. The principle of removing the crystals is that the second composition and the crystals undergo a chemical reaction.

[0094] It should be noted that in this embodiment, by forming an uneven structure on the outer wall of the inner cladding in the inner cladding roughened section, the cladding light stripper has irregular surface defects, thereby being able to better form diffuse reflection, so that the temperature of the cladding light stripper is lower during use.

[0095] Furthermore, by regulating the specific components of the first composition used for roughening the cladding light stripping section and its corresponding treatment time, as well as regulating the specific components of the second composition used for roughening the inner cladding light stripping section containing crystals and its corresponding treatment time, the cladding light stripping efficiency and tensile strength of the cladding light stripper can be controlled and adjusted, and the product has a wide range of applications.

[0096] In some embodiments, after forming the inner cladding roughened section with an uneven structure, the inner cladding roughened section with an uneven structure can be rinsed with hot deionized water and wiped clean with dust-free paper to complete the preparation of the above-mentioned cladding light stripper.

[0097] In addition, for ease of understanding, the preparation method of the cladding light stripper provided in the embodiment of the present application is further described in detail below through six specific application examples (i.e., Application Example 1, Application Example 2, Application Example 3, Application Example 4, Application Example 5 and Application Example 6).

[0098] Application Example 1

[0099] In application example 1, the specific process of the preparation method of the cladding light stripper can be as follows:

[0100] Use a blade to strip 7 cm of the coating of a 25 / 400 optical fiber (NA value is 0.22) to form a cladding light stripping section, and wipe it clean with dust-free paper dipped in acetone. Then, at room temperature, use the first composition prepared in the above Example 1 to roughen the outer wall of the inner cladding in the cladding light stripping section. The length of the roughened cladding light stripping section is 4 cm, and the treatment time is 4 minutes to form an inner cladding hairened section. Then, use deionized water to rinse the inner cladding hairened section, and gently wipe the water clean with dust-free paper to obtain a cladding light stripper A1.

[0101] Application Example 2

[0102] In application example 2, the specific process of the preparation method of the cladding light stripper can be as follows:

[0103] At room temperature, the second composition prepared in the above-mentioned Example 1 is used to treat the inner cladding roughened section of the cladding light stripper A1 prepared in the above-mentioned Application Example 1 and the treatment is repeated three times, and the corresponding treatment times are 1 min, 5 min and 10 min respectively. The treated inner cladding roughened section is rinsed with hot deionized water and the water is gently wiped off with dust-free paper to obtain a cladding light stripper A21 with a corresponding treatment time of 1 min, a cladding light stripper A22 with a corresponding treatment time of 5 min and a cladding light stripper A23 with a corresponding treatment time of 10 min.

[0104] Application Example 3

[0105] In application example 3, the specific process of the preparation method of the cladding light stripper can be as follows:

[0106] Use a blade to strip 7 cm of the coating of a 25 / 400 optical fiber (NA value is 0.22) to form a cladding light stripping section, and wipe it clean with dust-free paper dipped in acetone. Then, at room temperature, use the first composition prepared in the above Example 2 to roughen the outer wall of the inner cladding in the cladding light stripping section. The length of the roughened cladding light stripping section is 4 cm, and the treatment time is 4 minutes to form an inner cladding hairened section. Then, use deionized water to rinse the inner cladding hairened section, and gently wipe the water clean with dust-free paper to obtain a cladding light stripper A3.

[0107] Application Example 4

[0108] In application example 4, the specific process of the preparation method of the cladding light stripper can be as follows:

[0109] At room temperature, the second composition prepared in the above-mentioned Example 2 is used to treat the inner cladding roughened section of the cladding light stripper A3 prepared in the above-mentioned Application Example 3 and the treatment is repeated three times, and the corresponding treatment times are 1 min, 5 min and 10 min respectively. The treated inner cladding roughened section is rinsed with hot deionized water and the water is gently wiped off with dust-free paper to obtain a cladding light stripper A41 with a corresponding treatment time of 1 min, a cladding light stripper A42 with a corresponding treatment time of 5 min and a cladding light stripper A43 with a corresponding treatment time of 10 min.

[0110] Application Example 5

[0111] In application example 5, the specific process of the preparation method of the cladding light stripper can be as follows:

[0112] Use a blade to strip 7 cm of the coating of a 25 / 400 optical fiber (NA value is 0.22) to form a cladding light stripping section, and wipe it clean with dust-free paper dipped in acetone. Then, at room temperature, use the first composition prepared in the above Example 3 to roughen the outer wall of the inner cladding in the cladding light stripping section. The length of the roughened cladding light stripping section is 4 cm, and the treatment time is 4 minutes to form an inner cladding hairened section. Then, use deionized water to rinse the inner cladding hairened section, and gently wipe the water clean with dust-free paper to obtain a cladding light stripper A5.

[0113] Application Example 6

[0114] In Application Example 6, the specific process of the preparation method of the cladding light stripper can be as follows:

[0115] At room temperature, the second composition prepared in the above-mentioned Example 3 is used to treat the inner cladding roughened section of the cladding light stripper A5 prepared in the above-mentioned Application Example 5 and the treatment is repeated three times, and the corresponding treatment times are 1 min, 5 min and 10 min respectively. The treated inner cladding roughened section is rinsed with hot deionized water and the water is gently wiped off with dust-free paper to obtain a cladding light stripper A61 with a corresponding treatment time of 1 min, a cladding light stripper A62 with a corresponding treatment time of 5 min and a cladding light stripper A63 with a corresponding treatment time of 10 min.

[0116] Specifically, by testing the cladding light stripping efficiency, inner cladding roughening section temperature, inner cladding roughening section microstructure and inner cladding roughening section tensile strength of the cladding light strippers A1 / A21 / A22 / 23 / A3 / A41 / A42 / A43 / A5 / A61 / A62 / A63 prepared in the above-mentioned application examples 1 to 6, the cladding light strippers A1 / A21 / A22 / 23 / A3 / A41 / A42 / A43 / A5 / A61 / A62 / A63 prepared in the above-mentioned application examples 1 to 6 were obtained. The cladding light stripping efficiency, the temperature of the inner cladding hairline section and the tensile strength of the inner cladding hairline section of A22 / 23 / A3 / A41 / A42 / A43 / A5 / A61 / A62 / A63 are shown in Table 1 below, and the enlarged microscopic images of the inner cladding hairline section of the cladding light strippers A1 / A21 / A22 / 23 / A3 / A41 / A42 / A43 obtained in Application Example 1, Application Example 2, Application Example 3 and Application Example 4 correspond to the following: Figure 4 , Figure 5 , Figure 6 and Figure 7 shown.

[0117] Table 1

[0118]

[0119] The process of testing the cladding light stripping efficiency of the cladding light stripper may include: Figure 2a The calibrated power test optical path shown, Figure 2b The roughened fiber test optical path and Figure 2c The core power test optical path shown in the figure tests the cladding light stripping efficiency of the cladding light stripper, and sets the power measured by the calibrated power test optical path to P1, the power measured by the roughened fiber test optical path to P2, and the power measured by the core power test optical path to P3. The calculation formula for the cladding light stripping efficiency is: Cladding light stripping efficiency = (P1-P2) / (P1-P3)*100%.

[0120] The process of testing the tensile strength of the inner cladding roughened section of the cladding light stripper may include: fixing the two ends of the inner cladding roughened section 10A of the optical fiber 10 on two glass substrates 30 with glue 20 respectively, so as to obtain a Figure 3 The sample shown is then subjected to a tensile test using a universal tensile testing machine, and the maximum tensile force when the sample breaks is taken as the tensile strength of the inner cladding hairened section.

[0121] Among them, the process of testing the temperature of the inner cladding roughening section of the cladding light stripper may include: using a temperature measuring thermal imager to test the temperature of the inner cladding roughening section of the cladding light stripper during the process of testing the cladding light stripping efficiency of the cladding light stripper, that is, the temperature of the inner cladding roughening section.

[0122] Among them, the process of testing the microstructure of the inner cladding roughened section of the cladding light stripper may include: using a high-precision microscope to observe the inner cladding roughened section of the cladding light stripper, and capturing a microscopic image of the inner cladding roughened section of the cladding light stripper magnified 1000 times.

[0123] It can be seen from the test results in Table 1 that for the cladding light strippers prepared in Application Examples 1 to 6, the overall temperature of the inner cladding roughening section is relatively low, all below 40°C, the cladding light stripping efficiency can reach 77% to 99%, and the tensile strength of the inner cladding roughening section can be increased from a minimum of 14N to a maximum of 36N.

[0124] And, by Figures 4 to 7 It can be seen that Figure 4 and Figure 6 The surface of the inner cladding roughened section shown in the figure contains crystals, which means that after the product is tested and used for a long time, there is a risk that the crystals will fall off. Figure 5 and Figure 7 The surface of the inner cladding roughened section shown in the figure has no crystals, which means that the product can meet the requirements of long-term use and has good stability in use.

[0125] As can be seen from the above, the preparation method of the cladding light stripper provided in this embodiment is to form a cladding light stripping section by stripping the coating layer of the optical fiber, and use a hairizing composition combination to process the outer wall of the inner cladding in the cladding light stripping section to form an inner cladding hairizing section in which the total reflection characteristics of the inner cladding transmission interface are destroyed, wherein the hairizing composition combination includes a first composition and a second composition, and the first composition and the second composition are kept separate from each other until use, wherein the first composition is a mixture of metal salts, fluoride salts, barium sulfate and a first acid solution, and the second composition is a mixture of a second acid solution and an ammonium fluoride solution, thereby preparing a cladding light stripper with the advantages of wide applicability, good ring test resistance, high long-term working stability, etc., and the cladding light stripping efficiency and tensile strength of the product are controllable and adjustable, and the product has a wide range of applications.

[0126] In order to better implement the method for preparing the cladding light stripper provided in the embodiment of the present application, the embodiment of the present application further provides a cladding light stripper, which is prepared by the method for preparing the cladding light stripper provided in any of the above embodiments.

[0127] Specifically, the cladding light stripper may include an optical fiber, and the optical fiber may include a core, an inner cladding, and a coating layer. The inner cladding is wrapped around the outer side of the core, and the coating layer is wrapped around the outer side of the inner cladding. The optical fiber has a cladding light stripping section where the coating layer is stripped, and the cladding light stripping section has at least one inner cladding hair section where the total reflection property of the inner cladding transmission interface is destroyed.

[0128] Furthermore, the inner cladding haired section can be formed by treating the outer side wall of the inner cladding in the cladding light stripping section of the optical fiber using the hairing composition combination provided in any of the above embodiments. Exemplarily, the inner cladding haired section can be formed by treating the outer side wall of the inner cladding in the cladding light stripping section of the optical fiber using one or more different hairing composition combinations.

[0129] Furthermore, it should be noted that the cladding light stripper in the embodiment of the present application is prepared by adopting the preparation method of the cladding light stripper provided by any of the above embodiments, and therefore has all the same beneficial effects, so this embodiment will not be described in detail herein.

[0130] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0131] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A hairening composition, characterized in that: comprising a first composition and a second composition, wherein the first composition and the second composition are kept separate from each other until used; The first composition is a mixture comprising a metal salt, a fluoride salt, barium sulfate and a first acid solution; and the second composition is a mixture comprising a second acid solution and an ammonium fluoride solution.

2. The hairing composition according to claim 1, characterized in that: The mass fractions of the metal salt, the fluoride salt, the barium sulfate and the first acid solution in the first composition are 1% to 10%, 20% to 30%, 40% to 70% and 20% to 30%, respectively; the mass fractions of the second acid solution and the ammonium fluoride solution in the second composition are 60% to 90% and 10% to 40%, respectively.

3. The hairing composition according to claim 1, characterized in that: The metal salt includes at least one of a sodium salt, a potassium salt and a barium salt.

4. The hairing composition according to claim 1, characterized in that: The fluoride salt includes at least one of ammonium bifluoride, potassium bifluoride, sodium bifluoride, sodium fluoride, potassium fluoride, calcium fluoride and magnesium fluoride.

5. The hairing composition according to claim 1, characterized in that: The first acid solution and the second acid solution respectively include at least one of a hydrofluoric acid solution, a hydrochloric acid solution, a sulfuric acid solution, and a nitric acid solution.

6. A method for preparing a hairy composition, characterized in that: The method is applied to prepare the hairy composition combination according to any one of claims 1 to 7, comprising: The first composition and the second composition are prepared separately.

7. A method for preparing a cladding light stripper, characterized in that: include: Stripping the coating layer of the optical fiber to form a cladding light stripping section; The outer side wall of the inner cladding in the cladding light stripping section is treated using the hairizing composition combination described in any one of claims 1 to 5 to form an inner cladding hairizing section in which the total reflection property of the inner cladding transmission interface is destroyed.

8. The method for preparing a cladding light stripper according to claim 7, characterized in that: The method of using the hairing composition combination according to any one of claims 1 to 5 to process the outer wall of the inner cladding in the cladding light stripping section to form an inner cladding hairing section in which the total reflection property of the inner cladding transmission interface is destroyed comprises: Using the first composition included in the hairing composition combination according to any one of claims 1 to 5, hairing the outer wall of the inner cladding in the cladding optical stripping section to form an inner cladding hairing section containing crystals; The second composition included in the hairing composition combination according to any one of claims 1 to 5 is used to remove the crystals from the inner cladding hairing section containing crystals, so as to form an inner cladding hairing section with an uneven structure.

9. The method for preparing a cladding light stripper according to claim 7, characterized in that: The length of the cladding optical stripping section is 4 to 10 cm; the length of the inner cladding hairening section is 1 to 8 cm.

10. A cladding light stripper, characterized in that: The method according to any one of claims 7 to 9 is used to prepare the product.

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