CN116560002A - A kind of optical fiber coating stripping method - Google Patents

Abstract

The invention relates to a stripping method of an optical fiber coating layer; the method comprises the following steps of S1: preparing an optical fiber; s2: carrying out coating stripping operation on a fiber region to be stripped of the optical fiber to obtain a stripping opening and a rough processing section, wherein the stripping opening is positioned at the upper end part of the fiber region to be stripped of the optical fiber, the coating at the stripping opening is completely stripped, the rough processing section is positioned from the stripping opening to the end part of the optical fiber, and the coating at the rough processing section is stripped with a certain thickness; s3: suspending and immersing the treated optical fiber in the soaking liquid, wherein the liquid level is higher than the rough machining section of the optical fiber and lower than the stripping opening; s4: and taking out after soaking for a period of time, removing the coating layer of the rough processing section, and wiping the optical fiber to obtain a finished product. According to the method, the coating layer at the upper end part of the fiber stripping area is completely stripped, the stripping opening exposing the bare fiber is obtained, the influence of the siphoning action of the soaking solution on the overall fiber stripping consistency can be prevented, the stripping opening is neat, the other coating layers of the fiber stripping area are stripped by a certain thickness, the precoating layer part is exposed, the thickness of the soaking corrosion coating layer is reduced, and the fiber stripping efficiency is improved.

Description

A kind of optical fiber coating stripping method

technical field

The invention relates to the field of optical fiber technology, in particular to a method for stripping an optical fiber coating layer.

Background technique

Optical fibers are widely used in the field of communication, and play an important role in promoting the development of electronic information, aerospace, equipment manufacturing and other industries. In order to increase the service life and mechanical strength of the optical fiber, a cladding and a coating layer are provided outside the core. The core and the cladding are inseparable, and the core and the cladding are combined to form a bare optical fiber. When performing optical fiber connection or optical fiber terminal processing, according to actual needs, the coating layer at the end of the optical fiber needs to be stripped to leave a bare optical fiber for line connection or optical fiber terminal preparation.

Existing optical fibers are often stripped by thermal stripping pliers. This method has high limitations, the stripping length is limited, the stripping is easy to tear, and there is a certain probability of damaging the optical fiber; use corrosive liquid (such as concentrated sulfuric acid, hydrofluoric acid, etc.) Corrosion stripping is to use the corrosiveness of the corrosive liquid to corrode the coating layer of the optical fiber. This method is inefficient, the waste liquid will pollute the environment, and it is troublesome to discharge and deal with; using acetone to corrode and strip the fiber, the reaction speed is slow, and a siphon effect will occur during the corrosion, which makes the optical fiber strip not neat. Therefore, there is an urgent need for a method for stripping the optical fiber coating to solve the above problems.

Contents of the invention

In order to solve the above problems, the invention provides a method for stripping an optical fiber coating, comprising the steps of:

S1: Prepare the optical fiber, fix it on the optical fiber fixing plate and cut it with one knife;

S2: Carry out the coating layer stripping operation on the area to be stripped of the optical fiber to obtain a stripping and rough processing section, the stripping is located at the upper end of the area to be stripped of the optical fiber, and the coating at the stripping area is completely Stripping exposes the bare optical fiber, the rough processing section is located at the stripped opening to the end of the optical fiber, the coating layer of the rough processing section is stripped to a certain thickness, and the thickness of the coating layer stripped by the rough processing section is d, d is less than the total thickness of the coating layer;

S3: suspending and immersing at least one optical fiber treated in step S2 in the soaking liquid, the liquid level is higher than the rough processing section of the optical fiber and lower than the stripping of the bare optical fiber;

S4: After soaking for a period of time, the soaked optical fiber is taken out, the coating layer of the rough processing section falls off, and the optical fiber is wiped to obtain a finished product.

Further, in the step S2, stripping the coating layer of the area to be stripped of the optical fiber specifically includes:

Roughly stripping the coating layer of the region to be stripped of the optical fiber with a certain thickness; performing secondary stripping of the coating layer at the upper end of the region to be stripped after rough stripping to obtain the stripped opening.

Further, in the step S2, the coating layer of the area to be stripped is stripped by using a laser fiber stripping machine, and the stripping length of the optical fiber is 0.3-1.5 mm.

Further, the rough stripping operation includes:

The buffer layer of the coating layer in the area to be stripped of the optical fiber is stripped to expose the pre-coating part.

Further, in the step S2, the thickness of the coating layer stripped from the roughly processed section of the optical fiber is 30-50 μm.

Further, in the step S3, the soaking solution is an acetone solution.

Further, in the step S3, the standing time of the optical fiber in the soaking liquid is 10-25s.

Further, in the step S4, after the coating layer of the optical fiber rough processing section falls off, it is wiped with a dust-free cloth dipped in alcohol to obtain a finished product.

Further, the fiber fixing plate is connected with a lifting mechanism for driving the fiber fixing plate to move linearly in the vertical direction.

Compared with the prior art, the present invention has the following beneficial effects due to the adoption of the above technical scheme:

1) In the optical fiber coating stripping method provided by the present invention, the coating layer in the area to be stripped of the optical fiber is stripped, and the coating layer at the upper end of the optical fiber area to be stripped is completely stripped to obtain a bare optical fiber. Stripping, the stripping is neat, and the coating layer in the area to be stripped from the stripping to the end face of the optical fiber is stripped to a certain thickness, that is, the buffer layer of the coating layer is stripped to expose the pre-coating part, reducing the thickness of the immersion corrosion coating layer , improve the stripping efficiency, and the upper end of the area to be stripped is provided with a stripping opening that completely strips the coating layer, which can prevent the siphon effect of the soaking liquid from affecting the consistency of the overall stripping;

2) The optical fiber coating layer stripping method provided by the present invention, the optical fiber coating layer is stripped off to obtain the stripping, the optical fiber rough processing section strips off the buffer layer of the coating layer, exposes the pre-coating part, and the pre-coating layer of the optical fiber Partially soaked in the soaking solution, through the reaction between the soaking solution and the pre-coating, the pre-coating part of the optical fiber can be stripped quickly, and the fiber stripping requirements of different lengths can be met without damaging the optical fiber. It has strong applicability and is universal Good sex.

Description of drawings

Fig. 1 is the structural schematic diagram after fiber laser stripping in the embodiment of the present invention;

Fig. 2 is a schematic diagram of the structure of the optical fiber coating stripped in the embodiment of the present invention.

Explanation of reference signs:

1-optical fiber; 2-stripping; 3-rough processing section; 4-fiber fixing plate; 5-soaking solution; 6-glass container.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on The embodiments of the present invention and all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. In the drawings, the size and relative size of certain parts may be exaggerated for clarity.

In the description of the present invention, unless otherwise clearly stipulated and limited, the terms "connected" and "connected" should be interpreted in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical The connection can also be an electrical connection; it can be a direct connection or an indirect connection through an intermediary, it can be the internal communication of two elements or the interaction relationship between two elements, and for those of ordinary skill in the art, it can be The specific meanings of the above terms in the present invention should be understood in detail.

In the description of the present invention, the terms "upper", "lower", "left", "right", "front", "back" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only In order to facilitate description and simplify operation, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the present invention.

The present invention provides a method for stripping the coating layer of an optical fiber, which is mainly suitable for stripping the coating layer at the end of a ribbon-shaped optical fiber. In this embodiment, the optical fiber is a ribbon-shaped optical fiber, which includes the following steps:

S1: Prepare the optical fiber 1, fix it on the optical fiber fixing plate 4 and cut it with one knife;

Specifically, clean the surface of the optical fiber 1 by wiping it with alcohol, confirm the area to be stripped of the optical fiber according to the requirement of the stripped length, fix the optical fiber on the optical fiber fixing plate 4, and cut it according to the requirement.

S2: Carry out the coating layer stripping operation on the area to be stripped of the optical fiber to obtain a stripping 2 and a rough processing section 3, the stripping 2 is located at the upper end of the area to be stripped of the optical fiber, and the stripping 2 is The coating layer is completely stripped to expose the bare optical fiber. The rough processing section 3 is located at the stripped opening 2 to the end of the optical fiber. The coating layer of the rough processing section 3 is stripped to a certain thickness. The rough processing section strips Except that the thickness of the coating layer is d, d is less than the total thickness of the coating layer, wherein the upper end of the area to be stripped refers to the end of the area to be stripped away from the end of the optical fiber, as shown in Figure 1 of the specification.

Specifically, the above-mentioned fiber stripping operation includes two methods, one of which is to completely strip off the coating layer at the upper end of the area to be stripped to expose the bare optical fiber and form a stripping opening 2; The regional coating layer at the end is stripped to a certain thickness to obtain the rough processing section 3; second, the coating layer in the area of the optical fiber to be stripped is roughly stripped to a certain thickness, and the fiber to be stripped after the rough stripping is The coating layer at the upper end of the area is completely stripped to expose the bare optical fiber to obtain the stripped opening 2. After rough stripping, the other areas to be stripped except the stripped opening 2 are the rough processing section 3. This implementation In this example, the second stripping method is preferred.

S3: Suspend and soak at least one optical fiber 1 processed in step S2, specifically, suspend and immerse the rough processing section 3 of the optical fiber 1 into the soaking liquid 5, the liquid level is higher than the rough processing section 3 of the optical fiber 1, and lower Because the stripping 2 of the optical fiber, that is, the rough processing section 3 of the optical fiber 1 is completely immersed in the soaking solution 5, the lower end of the stripping 2 of the optical fiber is in the soaking solution 5, but the uppermost end of the stripping 2 is higher than the soaking solution 5 , to prevent the soaking solution 5 from affecting the coating layer on the upper end of the peeling port 2;

S4: After soaking for a period of time, the soaked optical fiber 1 is taken out, the coating layer of the rough processing section 3 falls off, and the optical fiber is wiped to obtain a finished product.

As shown in Figure 1 of the specification, it is a schematic diagram of the optical fiber after step S2, and as shown in Figure 2 of the specification, it is a schematic diagram of the optical fiber suspended and soaked in the soaking solution in Step S3. In addition, the optical fiber is described in detail by taking ribbon optical fiber as an example. The optical fiber includes a core, a cladding and a coating layer from the inside to the outside. The core is generally made of silica or fluorine-doped silica, and the cladding It is generally made of silica, fluorine-doped silica or titanium-coated silica. The core and cladding are inseparable. The core and cladding are combined to form a bare fiber. The outside of the bare fiber is coated with a coating. Coating layer, the coating layer is a polymer material layer coated to protect the bare optical fiber, improve the mechanical strength and microbending strength of the optical fiber, and reduce attenuation. The coating layer has two layers, including a pre-coating layer from the inside to the outside and a The buffer layer.

Specifically, in this application, a laser fiber stripping machine is used to strip the coating layer, and the coating layer in the area to be stripped of the optical fiber is roughly stripped to a certain thickness, and then the upper end of the area to be stripped of the optical fiber is used The laser fiber stripping device completely strips the fiber, strips the pre-coating layer and the buffer layer, and exposes the bare fiber to form the stripping 2. The length of the stripping 2 is 1mm. The laser stripping can make the stripping 2 of the ribbon fiber neat.

Specifically, adjust the laser parameters to roughly strip the coating layer of the fiber to be stripped area of the optical fiber. The laser speed is 1200mm/s, the power is 30%, and the frequency is 20KHz. The buffer layer of the area to be stripped is stripped to expose the pre-coating part , the thickness of the coating layer stripped in the rough stripping operation is d, d is less than the total thickness of the coating layer, that is, only part of the coating layer is stripped, and the stripping thickness d is 30-50 μm; The upper end of the area to be stripped after removal is stripped twice, so that the coating layer on the upper end of the area to be stripped is completely stripped, the laser speed is 1400mm/s, the power is 35%, and the frequency is 20KHz. A stripping opening 2 is formed at the upper end, and the coating layer at the stripping opening is completely stripped to expose the bare optical fiber part. At this time, the outer diameter of the stripping opening 2 is smaller than the outer diameter of the rough processing section 3, which can avoid the siphon effect of the soaking liquid from affecting the consistency of the overall fiber stripping, strip off the buffer layer of the optical fiber, and reduce the thickness of the soaking corrosion coating layer. The upper end of the rough processing section is provided with a stripping opening, which avoids the siphon effect of the soaking liquid and has good stripping consistency.

In the optimized implementation mode, in the step S3, the soaking solution 5 is an acetone solution, and the acetone solution is placed in the glass container 6; if the acetone is directly soaked and stripped, because the acetone does not react with the buffer layer of the outermost layer of the optical fiber, so The overall process is slow, and acetone will penetrate into the gap between the optical fiber and the optical fiber through the siphon effect, resulting in poor control of the length of the stripped fiber, and after the soaking is completed, the buffer layer that does not react with acetone will remain on the outer layer of the optical fiber and requires secondary processing , the processed stripping is not neat, and after the initial stripping of the buffer layer, the diameter of the pre-coating is small, and the reaction speed with acetone is faster; if no stripping is set, only a certain thickness of the coating layer in the area to be stripped If it is stripped, there will be a siphon effect in the process of soaking in acetone, and the remaining buffer layer will adhere to the optical fiber after soaking, which needs to be manually torn and separated. The operation is cumbersome and easy to cause damage to the optical fiber; If the coating layer in the area to be stripped is not stripped to a certain thickness, the time required for soaking will be greatly prolonged, and the remaining buffer layer after soaking needs to be cleaned manually, which will affect the stripping efficiency and quality of the fiber stripping.

In the optimized implementation mode, in the step S3, the standing time of the ribbon-shaped optical fiber in the soaking solution is 20s. Of course, the soaking time can be determined according to the soaking condition of the ribbon-shaped optical fiber. After the optical fiber is soaked, take out For optical fiber, the pre-coating of the rough processing section can fall off by itself.

In the optimized implementation mode, in the step S4, after the coating layer of the rough processing section 3 of the optical fiber falls off, wipe it with a dust-free cloth dipped in alcohol to obtain a finished product. After the optical fiber is soaked, take out the optical fiber, and the precoating layer of the rough processing section It can fall off by itself. If the pre-coating does not fall off by itself, the pre-coating can be removed with the help of external force to expose the bare optical fiber and complete the stripping of the optical fiber coating layer. Use a dust-free cloth dipped in alcohol to scrub the stripped area and clean the optical fiber. Clean to get finished product.

In an optimized implementation mode, the optical fiber fixing plate 4 is connected with a lifting mechanism for driving the optical fiber fixing plate 4 to move linearly in the vertical direction. The coating layer is stripped, and the area to be stripped is set toward the lower end. An acetone solution for soaking the optical fiber is arranged below the fiber fixing plate 4. The fiber fixing plate 4 is connected to the output end of the lifting mechanism, and the lifting mechanism can drive the fiber fixing plate 4. Move vertically to adjust the immersion length of the optical fiber in the acetone solution, so that the leaf surface of the acetone solution is higher than the rough processing section and lower than the stripping opening. It can be used for different optical fiber stripping lengths, with strong practicability and wide applicability.

Those skilled in the art will appreciate that the present invention may be embodied in many other specific forms without departing from the spirit and scope of the invention. Although an embodiment of the invention has been described, it should be understood that the invention should not be limited to this embodiment, and that changes and modifications may be made by those skilled in the art within the spirit and scope of the invention as defined by the appended claims.

Claims (9)

1. A method for stripping an optical fiber coating, comprising the steps of: S1: Prepare the optical fiber, fix it on the optical fiber fixing plate and cut it with one knife; S2: Carry out the coating layer stripping operation on the area to be stripped of the optical fiber to obtain a stripping and rough processing section, the stripping is located at the upper end of the area to be stripped of the optical fiber, and the coating at the stripping area is completely Stripping exposes the bare optical fiber, the rough processing section is located at the stripped opening to the end of the optical fiber, the coating layer of the rough processing section is stripped to a certain thickness, and the thickness of the coating layer stripped by the rough processing section is d, d is less than the total thickness of the coating layer; S3: suspending and immersing at least one optical fiber treated in step S2 in the soaking liquid, the liquid level is higher than the rough processing section of the optical fiber and lower than the stripping of the bare optical fiber; S4: After soaking for a period of time, the soaked optical fiber is taken out, the coating layer of the rough processing section falls off, and the optical fiber is wiped to obtain a finished product. 2. The optical fiber coating stripping method according to claim 1, wherein, in the step S2, stripping the coating layer of the optical fiber region to be stripped specifically includes: Roughly stripping the coating layer of the region to be stripped of the optical fiber with a certain thickness; performing secondary stripping of the coating layer at the upper end of the region to be stripped after rough stripping to obtain the stripped opening. 3. The optical fiber coating stripping method according to claim 1, characterized in that, in the step S2, a laser fiber stripping machine is used to strip the coating layer in the area to be stripped, and the stripping of the optical fiber The length is 0.3-1.5mm. 4. The optical fiber coating stripping method according to claim 2, wherein the rough stripping operation comprises: The buffer layer of the coating layer in the area to be stripped of the optical fiber is stripped to expose the pre-coating part. 5 . The method for stripping the coating layer of an optical fiber according to claim 1 , wherein, in the step S2 , the thickness of the coating layer stripped from the roughly processed section of the optical fiber is 30-50 μm. 6 . 6. The method for stripping optical fiber coating layer according to claim 1, characterized in that, in the step S3, the soaking liquid is an acetone solution. 7. The method for stripping optical fiber coating layer according to claim 1, characterized in that, in the step S3, the standing time of the optical fiber in the soaking liquid is 10-25s. 8. The optical fiber coating layer stripping method according to claim 1, characterized in that, in the step S4, after the coating layer of the optical fiber rough processing section falls off, wipe it with a dust-free cloth dipped in alcohol to obtain a finished product . 9. The method for stripping an optical fiber coating layer according to claim 1, wherein the optical fiber fixing plate is connected with a lifting mechanism for driving the optical fiber fixing plate to move linearly in the vertical direction.