Texturing Composition, Texturing Device and Texturing Method for Optical Fiber

Abstract

The present application discloses a texturing composition, a texturing device and a method for texturing an optical fiber. The texturing composition comprises the following components: hydrofluoric acid, ammonium bifluoride, ammonium fluoride, calcium sulfate, barium sulfate, microcrystalline cellulose, sodium fluoroborate and sodium dodecylbenzenesulfonate; wherein, the weight ratio of the hydrofluoric acid, the microcrystalline cellulose and the sodium fluoroborate is (4-10):(0.2-1):(0.4-1.3). The texturing composition disclosed in the present application can not only effectively texture the surface of a bare optical fiber, but also has a low cost, is convenient to use and does not require the purchase of expensive processing equipment; at the same time, by mixing hydrofluoric acid, microcrystalline cellulose and sodium fluoroborate in a specific ratio, within this ratio range, by changing the dosage of hydrofluoric acid, the surface morphology of the textured optical fiber can be well controlled, further improving the controllability of the surface morphology of the textured optical fiber, and having strong practicability.

Description

Technical Field

[0001] This application relates to the field of optical fiber processing and encapsulation, and particularly to a texturing composition, a texturing device, and a method for texturing an optical fiber. Background Art

[0002] An optical fiber includes a bare optical fiber and a coating layer. Among them, the bare optical fiber includes a core and a cladding covering the core. The core is made of a light guiding material with a high refractive index, and the cladding is made of a light guiding material with a low refractive index; the coating layer refers to a polymer material layer coated outside the core. The removal of cladding light in an optical fiber plays an important role in the fabrication of an optical fiber laser.

[0003] Texturing the surface of the cladding is one of the mainstream methods for removing cladding light. Specifically, currently, the surface texturing of an optical fiber mainly adopts a laser texturing process and chemistry, that is, a pulsed laser with a relatively high energy is used to irradiate the SiO on the cladding 2 portion to form an uneven surface on the surface of the bare optical fiber. However, this process requires the purchase of expensive laser texturing equipment, resulting in high costs. Summary of the Invention

[0004] In view of this, this application provides a texturing composition, a texturing device, and a method for texturing an optical fiber, aiming to reduce the cost of surface texturing of an optical fiber.

[0005] The embodiments of this application are implemented as follows:

[0006] In a first aspect, this application provides a texturing composition, including the following components: hydrofluoric acid, ammonium bifluoride, ammonium fluoride, calcium sulfate, barium sulfate, microcrystalline cellulose, sodium fluoroborate, and sodium dodecylbenzenesulfonate;

[0007] Among them, the weight ratio of the hydrofluoric acid, the microcrystalline cellulose, and the sodium fluoroborate is (4 - 10):(0.2 - 1):(0.4 - 1.3).

[0008] In some embodiments of this application, the weight ratio of the hydrofluoric acid, the microcrystalline cellulose, and the sodium fluoroborate is (4 - 10):(0.4 - 0.6):(0.8 - 1.2).

[0009] In some embodiments of this application, the weight ratio of the hydrofluoric acid, ammonium bifluoride, ammonium fluoride, calcium sulfate, barium sulfate, microcrystalline cellulose, sodium fluoroborate, and sodium dodecylbenzenesulfonate is (4 - 10):(2 - 8):(1 - 4):(1 - 4):(2 - 4):(0.2 - 1):(0.4 - 1.3):(0.3 - 1).

[0010] In some embodiments of the present application, the texturing composition consists of the following components: hydrofluoric acid, ammonium bifluoride, ammonium fluoride, calcium sulfate, barium sulfate, microcrystalline cellulose, sodium fluoroborate, and sodium dodecylbenzenesulfonate.

[0011] In some embodiments of the present application, the dosage form of the texturing composition includes an ointment.

[0012] In a second aspect, the present application also provides a method for texturing an optical fiber, including the following steps:

[0013] Provide an optical fiber;

[0014] Remove the coating layer of the optical fiber to obtain a bare optical fiber;

[0015] Provide a texturing composition, apply the texturing composition on the surface of the bare optical fiber, and perform texturing treatment for 5 to 10 minutes to obtain a textured optical fiber;

[0016] Wherein, the texturing composition includes the texturing composition as described above.

[0017] In a third aspect, the present application also provides a texturing device, including:

[0018] A base body;

[0019] A texturing mechanism provided on the base body, the texturing mechanism includes a texturing part, a channel for containing the texturing composition is formed in the texturing part, and both ends of the channel penetrate the outer surface of the texturing part respectively; and,

[0020] A displacement mechanism provided on the base body, the displacement mechanism includes a fixing part for fixing the optical fiber;

[0021] The fixing part and the texturing part can move closer to or away from each other so that the optical fiber is threaded through the channel.

[0022] In some embodiments of the present application, the base body includes a guide rail;

[0023] The texturing mechanism further includes a base, the base is fixedly installed on the guide rail, and the texturing part is installed on the base; and,

[0024] The displacement mechanism further includes a slider, the slider is slidably matched with the guide rail, and the fixing part is installed on the slider.

[0025] In some embodiments of the present application, the texturing device further includes a limiting part, the limiting part is slidably installed on the guide rail and is located between the base and the slider to limit the distance between the base and the slider.

[0026] In some embodiments of the present application, the texturing part is a Teflon tube with both ends open; and / or,

[0027] The fixing part includes a fixing block and a movable member. The fixing block has a fixed end, and a receiving groove for receiving the optical fiber is provided on the fixed end. The movable member is rotatably mounted on the fixed end of the fixing block to cover or open the receiving groove.

[0028] In the texturing composition provided by the present application, by combining hydrofluoric acid, ammonium bifluoride, ammonium fluoride, calcium sulfate, barium sulfate, microcrystalline cellulose, sodium fluoroborate, and sodium dodecylbenzenesulfonate, the obtained texturing composition can not only effectively texture the surface of the bare optical fiber, but also has a low cost, is easy to use, and does not require the purchase of expensive processing equipment. At the same time, by mixing hydrofluoric acid, microcrystalline cellulose, and sodium fluoroborate in a specific ratio, within this ratio range, by changing the dosage of hydrofluoric acid, the surface morphology of the textured optical fiber can be well controlled, further improving the controllability of the surface morphology of the textured optical fiber, and having strong practicability. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 is a schematic structural diagram of a texturing device according to an embodiment of the present application;

[0031] Figure 2 is Figure 1 a top view of the texturing device shown;

[0032] Figure 3 is a schematic flowchart of a method for texturing an optical fiber according to an embodiment of the present application;

[0033] Figure 4 is a surface morphology diagram of an optical fiber treated with the texturing composition of Example 1;

[0034] Figure 5 is a surface morphology diagram of an optical fiber treated with the texturing composition of Example 2;

[0035] Figure 6 is a surface morphology diagram of an optical fiber treated with the texturing composition of Example 3;

[0036] Figure 7 is a surface morphology diagram of an optical fiber treated with the texturing composition of Example 4;

[0037] Figure 8 It is the surface topography diagram of the optical fiber treated with the texturing composition of Example 5;

[0038] Figure 9 It is the surface topography diagram of the optical fiber treated with the texturing composition of Example 6;

[0039] Figure 10 It is the surface topography diagram of the optical fiber treated with the texturing composition of Example 7;

[0040] Figure 11 It is the surface topography diagram of the optical fiber treated with the texturing composition of Example 8;

[0041] Figure 12 It is the surface topography diagram of the optical fiber treated with the texturing composition of Comparative Example 1;

[0042] Figure 13 It is the surface topography diagram of the optical fiber treated with the texturing composition of Comparative Example 2;

[0043] Figure 14 It is the surface topography diagram of the optical fiber treated with the texturing composition of Comparative Example 3;

[0044] Figure 15 It is the surface topography diagram of the optical fiber treated with the texturing composition of Comparative Example 4;

[0045] Figure 16 It is the surface topography diagram of the optical fiber treated with the texturing composition of Comparative Example 5;

[0046] Figure 17 It is the surface topography diagram of the optical fiber treated with the texturing composition of Comparative Example 6;

[0047] Figure 18 It is the surface topography diagram of the optical fiber treated with the texturing composition of Comparative Example 7;

[0048] Figure 19 It is the surface topography diagram of the optical fiber treated with the texturing composition of Comparative Example 8;

[0049] Figure 20 It is the surface topography diagram of the optical fiber treated with the texturing composition of Comparative Example 9;

[0050] Figure 21 It is the surface topography diagram of the optical fiber untreated with the texturing composition in the experimental example.

[0051] Reference numerals: 1 - guide rail; 21 - texturing part; 22 - base; 31 - fixing part; 311 - fixing block; 312 - movable part; 32 - slider; 4 - limiting part; 5 - optical fiber. Detailed implementation manners

[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts belong to the scope of protection of the present application. In addition, it should be understood that the specific implementation manners described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the orientation terms such as "upper" and "lower" specifically refer to the drawing directions in the drawings. In addition, in the description of the specification of the present application, the term "including" means "including but not limited to". The various embodiments of the present invention may exist in the form of a range; it should be understood that the description in the form of a range is only for convenience and simplicity, and should not be construed as a rigid limitation on the scope of the present invention; therefore, it should be considered that the description of the range has specifically disclosed all possible sub-ranges and single values within that range. For example, it should be considered that the description of the range from 1 to 6 has specifically disclosed sub-ranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and single numbers within the range, such as 1, 2, 3, 4, 5, and 6, regardless of what the range is. In addition, whenever a numerical range is indicated herein, it means including any cited number (fraction or integer) within the indicated range.

[0053] In the present application, "and / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Wherein A and B can be singular or plural.

[0054] In the present application, "at least one" means one or more, and "a plurality" means two or more. "At least one kind", "at least one item (piece) below" or similar expressions refer to any combination of these items, including any combination of single item (piece) or plural items (pieces). For example, "at least one item (piece) among a, b, or c", or, "at least one item (piece) among a, b, and c" can all represent: a, b, c, a - b (that is, a and b), a - c, b - c, or a - b - c, where a, b, and c can be single or multiple respectively.

[0055] In a first aspect, the present application provides a texturing composition, comprising the following components: hydrofluoric acid, ammonium bifluoride, ammonium fluoride, calcium sulfate, barium sulfate, microcrystalline cellulose, sodium fluoroborate, and sodium dodecylbenzenesulfonate; wherein, the weight ratio of the hydrofluoric acid, the microcrystalline cellulose, and the sodium fluoroborate is (4 - 10):(0.2 - 1):(0.4 - 1.3).

[0056] In practical applications, the above-mentioned hydrofluoric acid, ammonium bifluoride, ammonium fluoride, calcium sulfate, barium sulfate, microcrystalline cellulose, sodium fluoroborate, and sodium dodecylbenzenesulfonate can all be purchased on the market. Among them, hydrofluoric acid refers to an aqueous solution of hydrogen fluoride, and the mass fraction of hydrogen fluoride is greater than or equal to 40 wt%.

[0057] Among them, ammonium bifluoride and ammonium fluoride play a role in adjusting the pH of the texturing composition; calcium sulfate and barium sulfate play a role as thickeners; sodium dodecylbenzenesulfonate can disperse each component and maintain the stability of this texturing composition. This texturing composition reacts with the silica on the surface of the bare optical fiber to form an uneven surface, realizing the texturing of the optical fiber surface. Since the components included in this texturing composition are all common and easily available reagents, with low cost and small acquisition difficulty, using this texturing composition to texture the optical fiber can not only effectively texture the surface of the bare optical fiber, but also has a low cost and is convenient to use, without the need to purchase expensive laser processing equipment, greatly reducing the cost of the texturing process.

[0058] In addition, in this texturing composition, the weight ratio of the hydrofluoric acid, the microcrystalline cellulose, and the sodium fluoroborate is (4 - 10):(0.2 - 1):(0.4 - 1.3); for example, the weight ratio of the three can be (4 - 5):(0.2 - 0.5):(0.4 - 1), (4 - 5):(0.5 - 1):(1 - 1.3), (4.5 - 8):(0.4 - 0.6):(0.9 - 1.1), (7 - 10):(0.3 - 0.8):(0.4 - 1.3), (5 - 8):(0.2 - 0.8):(0.7 - 1.2), (4 - 10):(0.2 - 0.6):(0.9 - 1.3), (4 - 10):(0.5 - 1):(0.4 - 1.1), and so on. By mixing hydrofluoric acid, microcrystalline cellulose, and sodium fluoroborate in a specific ratio, within this ratio range, by changing the dosage of hydrofluoric acid, the morphology of the textured optical fiber surface can be well controlled; specifically, the formula of this texturing composition has the following advantages: when the weight ratio of the hydrofluoric acid, the microcrystalline cellulose, and the sodium fluoroborate is controlled within the range of (4 - 10):(0.2 - 1):(0.4 - 1.3), as the dosage of hydrofluoric acid increases, the particles on the surface of the textured optical fiber increase accordingly, and at the same time, the gap between adjacent particles also increases. Thus, in practical applications, adjusting the dosage of the components in the texturing composition can precisely control the particle size and the gap size between particles on the surface of the textured optical fiber, improving the predictability of the texturing effect of the texturing process and further enhancing the controllability of the surface morphology of the textured optical fiber, with strong practicality.

[0059] Further, in some embodiments of the present application, the weight ratio of the hydrofluoric acid, the microcrystalline cellulose, and the sodium fluoroborate is (4-10):(0.4-0.6):(0.8-1.2). Further controlling the dosage ratio of the microcrystalline cellulose and the sodium fluoroborate helps to improve the predictability of the texturing effect of the texturing composition and better control the surface topography of the textured optical fiber.

[0060] In some embodiments of the present application, the weight ratio of the hydrofluoric acid, ammonium bifluoride, ammonium fluoride, calcium sulfate, barium sulfate, microcrystalline cellulose, sodium fluoroborate, and sodium dodecylbenzenesulfonate is (4-10):(2-8):(1-4):(1-4):(2-4):(0.2-1):(0.4-1.3):(0.3-1). For example, the weight ratio of the hydrofluoric acid, ammonium bifluoride, ammonium fluoride, calcium sulfate, barium sulfate, microcrystalline cellulose, sodium fluoroborate, and sodium dodecylbenzenesulfonate can be 4:2:1:1:2:0.2:0.4:0.3, 7:2:1:1:2:0.2:0.4:0.3, 10:2:1:1:2:0.2:0.4:0.3, 5:3:2:3:3:0.4:0.5:0.6, 6:4:1.5:1:2.5:0.3:0.8:0.3, 4:5:2.5:1:2:0.5:0.9:0.5, 4:6:3:1.5:2:0.7:1:0.7, 4:7:3.5:4:2:0.8:1.1:0.8, 4:8:4:2.5:4:1:1.2:1, etc. The texturing composition formed by combining the components according to the above weight ratio has a better texturing effect.

[0061] In some embodiments of the present application, the texturing composition is composed of the following components: hydrofluoric acid, ammonium bifluoride, ammonium fluoride, calcium sulfate, barium sulfate, microcrystalline cellulose, sodium fluoroborate, and sodium dodecylbenzenesulfonate. Further, in some embodiments, the texturing composition is composed of the following components in parts by weight: 4-10 parts of hydrofluoric acid, 2-8 parts of ammonium bifluoride, 1-4 parts of ammonium fluoride, 1-4 parts of calcium sulfate, 2-4 parts of barium sulfate, 0.2-1 part of microcrystalline cellulose, 0.4-1.3 parts of sodium fluoroborate, and 0.3-1 part of sodium dodecylbenzenesulfonate.

[0062] In addition, in some embodiments of the present application, the dosage form of the texturing composition includes an ointment. Compared with a liquid preparation, when the ointment is coated on the surface of the bare optical fiber, it has a certain texturing pressure and a better texturing effect. In addition, the ointment is not easy to flow away and can stay evenly and stably on the circumferential surface of the optical fiber, enabling its outer surface to be evenly textured.

[0063] Furthermore, the present application also provides a method for preparing a texturing composition, the preparation method comprising the following steps: Mix ammonium bifluoride, ammonium fluoride, calcium sulfate, barium sulfate, microcrystalline cellulose, sodium fluoroborate, and sodium dodecylbenzenesulfonate evenly, then add hydrofluoric acid and stir into a paste to obtain the texturing composition. The preparation steps of this texturing composition are simple and easy to operate.

[0064] In a second aspect, the present application also provides a method for texturing an optical fiber. Referring to Figure 3 , the texturing method comprises the following steps:

[0065] Step S10, providing an optical fiber.

[0066] Step S20, removing the coating layer of the optical fiber to obtain a bare optical fiber.

[0067] Step S30, providing a texturing composition, coating the texturing composition on the surface of the bare optical fiber, and performing texturing treatment for 5 - 10 minutes to obtain a textured optical fiber; wherein, the texturing composition comprises the texturing composition as described above.

[0068] The optical fiber comprises a core, a cladding, and a coating layer coated in sequence from the inside to the outside, wherein the core and the cladding constitute the bare optical fiber. In step S20, in practical applications, first strip the coating layer of the section of the optical fiber to be textured, expose the surface of the bare optical fiber located below the coating layer, and then clean the surface of the bare optical fiber for subsequent steps. Among them, the coating layer can be stripped by physical means, such as using a tool to strip, or by chemical corrosion methods, such as using concentrated sulfuric acid to corrode the coating layer.

[0069] In step S30, in practical applications, the texturing composition can be applied by smearing the texturing composition on the surface of the bare optical fiber to make the texturing composition react with the surface of the bare optical fiber; or the texturing composition can be spread on the workbench to form a paste layer, and then the bare optical fiber is pressed into the paste layer so that the outer surface of the bare optical fiber is fully wrapped by the texturing composition. Among them, the latter method can keep the texturing composition on the surface of the bare optical fiber for a longer time, which helps the surface of the bare optical fiber and the texturing composition to better contact and the texturing effect is better. However, when using the method of pressing into the paste layer, in order to avoid waste of the texturing composition, the thickness of the prepared paste layer is limited, resulting in a smaller texturing pressure on the surface of the bare optical fiber near the upper side of the paste layer, which easily leads to poor uniformity of the texturing effect on the outer surface of the bare optical fiber. In view of this, the present application also provides a texturing device, and using this texturing device can better achieve the texturing treatment of the optical fiber 5. Figure 1 and Figure 2 are specific embodiments of the texturing device provided by the present application.

[0070] Referring to Figure 1 and Figure 2, the texturing device includes a base body, a texturing mechanism, and a displacement mechanism; the texturing mechanism and the displacement mechanism are disposed on the base body, the texturing mechanism includes a texturing part 21, the texturing part 21 is formed with a channel for containing a texturing composition, and both ends of the channel penetrate the outer surface of the texturing part 21 respectively; the displacement mechanism includes a fixing part 31 for fixing the optical fiber 5, and the fixing part 31 and the texturing part 21 can move closer to or away from each other so that the optical fiber 5 is inserted into the channel.

[0071] Among them, the function of the fixing part 31 is to fix the optical fiber 5 to be processed, and the function of the texturing part 21 is to contain the texturing composition for processing the optical fiber 5. At least one of the fixing part 31 and the texturing part 21 is movably arranged, and the moving direction is the direction of approaching or separating from each other. Thus, when moving, the fixing part 31 and the texturing part 21 approach or separate from each other, thereby driving the optical fiber 5 to approach or separate from the texturing composition in the channel. In actual application, the texturing composition is placed in the channel, the optical fiber 5 is fixed by the fixing part 31, and then at least one of the fixing part 31 and the texturing part 21 is moved to shorten the distance between the texturing part 21 and the fixing part 31, so that the optical fiber 5 can enter the channel and be inserted into the texturing composition, enabling the optical fiber 5 and the texturing composition to be in full contact for texturing; after texturing, at least one of the fixing part 31 and the texturing part 21 is moved to increase the distance between the texturing part 21 and the fixing part 31, so that the optical fiber 5 exits the channel; at the same time, in the texturing device provided in the present application, the space for containing the texturing composition is a channel with both ends open. In this way, a part of the optical fiber 5 can pass through the channel, enabling its middle section to be inserted into the channel, so as to realize the texturing treatment of the middle section of the optical fiber 5; in addition, the designed channel in the present application can provide conditions for the optical fiber 5 to be in uniform contact with the texturing composition on all sides of its circumference. When the optical fiber 5 is inserted into the channel along the central axis direction of the channel, the pressure received by all sides of the circumference of the optical fiber 5 is uniform, which helps to improve the uniformity of the texturing effect on the outer surface of the optical fiber 5.

[0072] In actual application, at least one of the fixing part 31 and the texturing part 21 can be moved manually, or a driving mechanism can be used. Based on this, in some embodiments, the texturing device further includes a driving mechanism, and the driving mechanism is used to drive at least one of the fixing part 31 and the texturing part 21 to move. Specifically, the driving mechanism can be a cylinder.

[0073] In some embodiments, the texturing part 21 is fixedly arranged, and the fixing part 31 is movably arranged in a direction close to or away from the texturing part 21. Specifically, the seat body includes a guide rail 1; the texturing mechanism further includes a base 22, the base 22 is fixedly installed on the guide rail 1, and the texturing part 21 is installed on the base 22; the displacement mechanism further includes a slider 32 slidably engaged with the guide rail 1, and the fixing part 31 is installed on the slider 32. In this way, the texturing part 21 is fixedly installed on the guide rail 1 through the base 22, and the fixing part 31 is slidably installed on the guide rail 1 through the slider 32. The fixing part 31 can slide along the guide rail 1, so as to be relatively close to or away from the texturing part 21.

[0074] In some embodiments, the guide rail 1 is arranged in a straight line, the texturing part 21 and the fixing part 31 are arranged at two ends of the guide rail 1, and the channel is arranged to extend along the length direction of the guide rail 1. In this way, only by adjusting the fixing part 31, when fixing the optical fiber 5, controlling the length direction of the optical fiber 5 to be consistent with the length direction of the guide rail 1, and one end of the optical fiber 5 corresponding to the entrance of the channel, the optical fiber 5 can be smoothly brought into the channel when the fixing part 31 is moved.

[0075] In some embodiments, the texturing part 21 is a Teflon tube with both ends open, and the channel is defined inside it, which can be used to hold the texturing composition; at the same time, its material has the property of corrosion resistance, which can avoid being corroded by the texturing composition and has a long service life.

[0076] Further, in some embodiments, the texturing part 21 is detachably installed on the base 22. In this way, removing the texturing part 21 and then loading materials is more convenient for operation, and it is also convenient to replace the texturing part 21 when it is damaged.

[0077] The fixing part 31 includes a fixing block 311 and a movable part 312. The fixing block 311 has a fixed end, and a receiving groove for receiving the optical fiber 5 is provided on the fixed end. The fixed end can be any end of the fixing block 311, and its function is to place the optical fiber 5. Refer to Figure 1 , in this embodiment, the fixed end refers to the upper end of the fixing block 311. The movable part 312 is rotatably installed at the fixed end of the fixing block 311 and has an open position and a covering position. As Figure 1 shown, when the movable part 312 is in the open position, the receiving groove on the fixed end is exposed to facilitate the taking and placing of the optical fiber 5; when the movable part 312 is in the covering position, the movable part 312 covers the fixed end to cover the receiving groove, thereby fixing the optical fiber 5 located in the receiving groove. Based on the embodiment where the guide rail 1 is straight and the channel extends along the length direction of the guide rail 1, the receiving groove can be arranged to extend along the length direction of the guide rail 1. In this way, the length direction of the optical fiber 5 received by the receiving groove will also be consistent with the length direction of the guide rail 1.

[0078] Furthermore, the fixed block 311 and the movable member 312 can be set to attract each other magnetically. In this way, not only can the movable member 312 be better positioned at the covering position to fix the optical fiber 5, but also it is convenient to rotate and open the movable member 312.

[0079] In addition, in some embodiments of the present application, the texturing device further includes a limiting portion 4. The limiting portion 4 is installed on the guide rail 1 and is in sliding fit with the guide rail 1, so that it can slide along the guide rail 1; the limiting portion 4 is located between the base 22 and the slider 32. Thus, when the slider 32 moves relatively closer to the base 22, the movement of the slider 32 can be restricted, and further the distance between the base 22 and the slider 32 can be restricted, so that the depth of the insertion channel of the optical fiber 5 can be defined, ensuring that the section of the optical fiber 5 to be textured can just stay in the channel.

[0080] The technical solutions and technical effects of the present application will be described in detail below through specific examples and comparative examples. The following examples are only partial examples of the present application and do not specifically limit the present application.

[0081] The texturing compositions described in the following examples and comparative examples are all prepared by the following preparation method: Weigh all components in proportion and set aside; then, mix the components other than hydrofluoric acid evenly, and finally add hydrofluoric acid and stir evenly to form a paste-like texturing composition.

[0082] Example 1

[0083] The texturing composition is composed of the following components in parts by weight: 4 parts of hydrofluoric acid, 6 parts of ammonium bifluoride, 2 parts of ammonium fluoride, 1 part of calcium sulfate, 2 parts of barium sulfate, 0.5 part of microcrystalline cellulose, 1 part of sodium fluoroborate, and 0.4 part of sodium dodecylbenzenesulfonate.

[0084] Example 2

[0085] This example is basically the same as Example 1, except that in this example, the amount of hydrofluoric acid is changed from 4 parts to 6 parts.

[0086] Example 3

[0087] This example is basically the same as Example 1, except that in this example, the amount of hydrofluoric acid is changed from 4 parts to 8 parts.

[0088] Example 4

[0089] This example is basically the same as Example 1, except that in this example, the amount of hydrofluoric acid is changed from 4 parts to 10 parts.

[0090] Example 5

[0091] This example is basically the same as Example 2, except that in this example, the amount of microcrystalline cellulose is changed from 0.5 parts to 0.2 parts.

[0092] Example 6

[0093] This example is basically the same as Example 2, except that in this example, the amount of microcrystalline cellulose is changed from 0.5 parts to 1 part.

[0094] Example 7

[0095] This example is basically the same as Example 2, except that in this example, the amount of sodium fluoroborate is changed from 1 part to 0.4 parts.

[0096] Example 8

[0097] This example is basically the same as Example 2, except that in this example, the amount of sodium fluoroborate is changed from 1 part to 1.3 parts.

[0098] Comparative Example 1

[0099] This comparative example is basically the same as Example 1, except that in Comparative Example 1, the amount of microcrystalline cellulose is changed from 0.5 parts to 0.1 parts.

[0100] Comparative Example 2

[0101] This comparative example is basically the same as Comparative Example 1, except that in this comparative example, the amount of hydrofluoric acid is changed from 4 parts to 6 parts.

[0102] Comparative Example 3

[0103] This comparative example is basically the same as Comparative Example 1, except that in this comparative example, the amount of hydrofluoric acid is changed from 4 parts to 10 parts.

[0104] Comparative Example 4

[0105] This comparative example is basically the same as Example 1, except that in this comparative example, it does not contain microcrystalline cellulose.

[0106] Comparative Example 5

[0107] This comparative example is basically the same as Comparative Example 4, except that in this comparative example, the amount of hydrofluoric acid is changed from 4 parts to 6 parts.

[0108] Comparative Example 6

[0109] This comparative example is basically the same as Comparative Example 4, except that in this comparative example, the amount of hydrofluoric acid is changed from 4 parts to 10 parts.

[0110] Comparative Example 7

[0111] This comparative example is basically the same as Example 1, except that in this comparative example, it does not contain sodium fluoroborate.

[0112] Comparative Example 8

[0113] This comparative example is basically the same as Comparative Example 7, except that in this comparative example, the amount of hydrofluoric acid is changed from 4 parts to 6 parts.

[0114] Comparative Example 9

[0115] This comparative example is basically the same as Comparative Example 7, except that in this comparative example, the amount of hydrofluoric acid is changed from 4 parts to 10 parts.

[0116] Experimental Example

[0117] Experimental method: Take a 20 / 400 optical fiber about 0.5 m long. After stripping the coating of the 10-cm-long optical fiber at the end of the optical fiber, wipe the surface of the bare optical fiber with an optical fiber wiping paper dipped in alcohol. Then, place about 8 g of the prepared texturing composition on a Teflon substrate to form a paste layer, and slowly place the bare optical fiber into the paste layer so that it is completely wrapped by the texturing composition. After treatment for about 8 minutes, take out the optical fiber, and then wipe the surface of the bare optical fiber with an optical fiber wiping paper dipped in alcohol. Observe the surface of the bare optical fiber using an optical microscope, and obtain the particle size of the particles with uniform surface size, and record it in Table 1. Among them, a particle size fluctuation of ±5% is regarded as no obvious change in the particle size.

[0118] Experimental object: The texturing compositions prepared in the above-mentioned examples and comparative examples respectively.

[0119] Table 1

[0120]

[0121]

[0122] Figures 4 to 20 records the surface morphologies of the optical fibers after being treated with the texturing compositions of Examples 1 to 8 and Comparative Examples 1 to 9 respectively, Figure 21 and records the surface morphology of the bare optical fiber without texturing treatment.

[0123] Compare Figures 4 to 11 with Figure 21 respectively. It can be seen that the surface morphologies of the bare optical fibers after being treated with the texturing compositions of each example have changed, indicating that the texturing composition proposed in this application has a texturing effect on the surface of the bare optical fiber.

[0124] Comparison Figures 4 to 7, and in combination with the data in Table 1, it can be seen that when the dosages of other components remain unchanged, as the dosage of hydrofluoric acid increases, the particles on the surface of the fiber after texturing become larger, and the gaps between particles also become larger.

[0125] Comparison Figure 5 、 Figures 8 to 11 , and in combination with the data in Table 1, it can be seen that the surface morphology of the fiber after being treated with the texturing compositions of Examples 5 to 8 is similar to that of the fiber after being treated with the texturing composition of Example 2, and the particle size difference is relatively small (the deviation is less than 5%). Obviously, when the weight ratio of hydrofluoric acid, microcrystalline cellulose, and sodium fluoroborate is in the range of (4 - 10):(0.2 - 1):(0.4 - 1.3), and the dosage of hydrofluoric acid remains unchanged, even if the dosages of microcrystalline cellulose and sodium fluoroborate change, the surface morphology of the fiber after texturing can basically remain unchanged. This shows that in practical applications, only by controlling the weight ratio of hydrofluoric acid, microcrystalline cellulose, and sodium fluoroborate in the range of (4 - 10):(0.2 - 1):(0.4 - 1.3) and then adjusting the content of hydrofluoric acid can the control of the surface morphology of the fiber after texturing be achieved.

[0126] Comparison Figures 12 to 14 , and in combination with the data in Table 1, it can be seen that although the dosages of components other than hydrofluoric acid remain unchanged, the size of the uniform particles on the surface of the fiber after texturing does not increase with the increase in the dosage of hydrofluoric acid, and the surface morphology of the fiber does not change in a directionally controllable manner. This shows that when the weight ratio of hydrofluoric acid, microcrystalline cellulose, and sodium fluoroborate is not in the range of (4 - 10):(0.2 - 1):(0.4 - 1.3), the texturing composition no longer has the characteristic of controllable texturing effect.

[0127] Comparison Figures 15 to 17 , Figures 18 to 19 , it can be seen that when the texturing composition does not contain microcrystalline cellulose or sodium fluoroborate, although the texturing composition still retains the texturing effect, its texturing effect on the surface of the fiber becomes uncontrollable. This shows that by combining hydrofluoric acid, ammonium bifluoride, ammonium fluoride, calcium sulfate, barium sulfate, microcrystalline cellulose, sodium fluoroborate, and sodium dodecylbenzenesulfonate in this application and mixing hydrofluoric acid, microcrystalline cellulose, and sodium fluoroborate in a specific ratio, the surface morphology of the textured fiber can be well controlled.

[0128] The above has introduced in detail the texturing composition, texturing device, and texturing method of the optical fiber provided by the embodiments of the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A texturing composition, characterized in that, it comprises the following components: hydrofluoric acid, ammonium bifluoride, ammonium fluoride, calcium sulfate, barium sulfate, microcrystalline cellulose, sodium fluoroborate, and sodium dodecylbenzenesulfonate; wherein, the weight ratio of the hydrofluoric acid, the microcrystalline cellulose, and the sodium fluoroborate is (4 - 10):(0.2 - 1):(0.4 - 1.3); the hydrofluoric acid is an aqueous solution of hydrogen fluoride, and the mass fraction of hydrogen fluoride in the hydrofluoric acid ≥ 40%.

2. The texturing composition according to claim 1, characterized in that, the weight ratio of the hydrofluoric acid, the microcrystalline cellulose, and the sodium fluoroborate is (4 - 10):(0.4 - 0.6):(0.8 - 1.2).

3. The texturing composition according to claim 1, characterized in that, the weight ratio of the hydrofluoric acid, ammonium bifluoride, ammonium fluoride, calcium sulfate, barium sulfate, microcrystalline cellulose, sodium fluoroborate, and sodium dodecylbenzenesulfonate is (4 - 10):(2 - 8):(1 - 4):(1 - 4):(2 - 4):(0.2 - 1):(0.4 - 1.3):(0.3 - 1).

4. The texturing composition according to any one of claims 1 to 3, characterized in that, the texturing composition consists of the following components: hydrofluoric acid, ammonium bifluoride, ammonium fluoride, calcium sulfate, barium sulfate, microcrystalline cellulose, sodium fluoroborate, and sodium dodecylbenzenesulfonate.

5. The texturing composition according to claim 1, characterized in that, the dosage form of the texturing composition includes ointment.

6. A method for texturing an optical fiber, characterized in that, it comprises the following steps: providing an optical fiber; removing the coating layer of the optical fiber to obtain a bare optical fiber; providing a texturing composition, coating the texturing composition on the surface of the bare optical fiber, and performing texturing treatment for 5 - 10 min to obtain a textured optical fiber; wherein, the texturing composition includes the texturing composition according to any one of claims 1 to 5.

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