CN111474631B - Stripping process method and auxiliary tool for optical fiber cladding light - Google Patents
Stripping process method and auxiliary tool for optical fiber cladding light Download PDFInfo
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- CN111474631B CN111474631B CN202010378629.5A CN202010378629A CN111474631B CN 111474631 B CN111474631 B CN 111474631B CN 202010378629 A CN202010378629 A CN 202010378629A CN 111474631 B CN111474631 B CN 111474631B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
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Abstract
The invention relates to the field of fiber lasers, and discloses a stripping process method and an auxiliary tool for fiber cladding light, wherein the stripping process method for the fiber cladding light comprises the following steps: removing a section of coating layer on the surface of the optical fiber to expose bare optical fiber; suspending and standing the bare optical fiber, forming a plurality of micro liquid drops distributed at intervals by the high-refractive-index glue under the action of gravity and liquid surface tension, and solidifying the liquid drops; and covering the bare optical fiber with low-refractive-index glue and curing the tiny liquid drops to form a packaging layer. The method utilizes gravity and liquid surface tension to enable the glue coated on the surface of the bare optical fiber to spontaneously form tiny liquid drops with tiny sizes, mutual independence and certain intervals. The optical fiber cladding light is stripped in the tiny liquid drops in a segmented mode, the temperature is effectively reduced, and the reliability is enhanced. The method is simple and easy to implement, strong in operability and low in cost, and not only can effectively reduce the temperature, but also can obviously improve the production efficiency.
Description
Technical Field
The invention relates to the technical field of fiber lasers, in particular to a stripping process method and an auxiliary tool for fiber cladding light.
Background
With the progress of technology, fiber lasers, fiber-coupled semiconductor lasers and other lasers based on optical fiber energy transmission have been widely used in the fields of industry, medical treatment, scientific research and the like. Removing excess cladding light from the fiber is an important step in the fabrication of such lasers. The basic idea for removing the optical fiber cladding light is to destroy the optical transmission condition inside the optical fiber cladding on the premise of ensuring that the optical transmission condition inside the optical fiber core is not changed.
There are two main methods for removing cladding light from optical fibers. The first method is to roughen the surface of the fiber cladding or the surface of the vitreous extension layer of the fiber cladding using a chemical or physical method. The method has the advantages of capability of bearing hectowatt-level cladding light, but has complex and time-consuming manufacturing process and higher cost, and is not suitable for stripping the cladding light between a Laser Diode (LD) module and a beam combining module. Since high power lasers generally have multiple or even tens of LD modules, the use of such cladding light stripping will undoubtedly reduce the production efficiency and increase the production cost. In addition, the output fiber cladding of the mainstream LD module in the current market is thin, and the cladding light is stripped in such a way, so that the process window is very narrow in practice and the operation difficulty is very high. The second method is to coat the entire fiber cladding with a high index material having a higher index of refraction than the fiber cladding, typically an ultraviolet cured glue. However, the disadvantages of this approach are very significant: and cannot withstand excessive cladding light. Because the glue layer has weak thermal conductivity, the glue layer has certain absorptivity to cladding light, and the colloid molecular bond can be broken at high temperature in an accelerated way, so that the reliability is reduced. The second method suffers from the problem that the cladding light is stripped too intensively, so that the heat dissipation cannot keep up with the heating. To solve this problem, it has been proposed to use cascade or segmented coating. Although the cascade or sectional coating can effectively reduce the temperature, the manufacturing process is quite complex, the cost is not easy to reduce, and the method is popularized to large-scale mass production. Because the length of each segment of glue line must be small enough and must be spaced apart to control the temperature of the glue line. Although the coating problem of the adhesive layer with the tiny length can be solved by using a mask plate or a screen spray printing mode, the operability of the mode is low and the cost is high because the optical fiber is a cylinder and is not a plane.
Disclosure of Invention
The embodiment of the invention provides a stripping process method and an auxiliary tool for optical fiber cladding light, which are used for solving the problems of low efficiency, high difficulty and high cost of the existing optical fiber cladding light stripping process.
The embodiment of the invention provides a stripping process method of optical fiber cladding light, which comprises the following steps:
removing a section of coating layer on the surface of the optical fiber to expose the bare optical fiber;
covering the outer surface of the bare optical fiber with high-refractive-index glue;
suspending and standing the bare optical fiber in a suspending way, forming a plurality of micro liquid drops distributed at intervals by the high-refractive-index glue under the action of gravity and liquid surface tension, and solidifying the micro liquid drops;
covering low-refractive-index glue on the outer surfaces of the bare optical fibers and the micro liquid drops, and curing the low-refractive-index glue to form a packaging layer;
the refractive index of the high-refractive-index glue is greater than that of the outer cladding of the bare optical fiber, and the refractive index of the low-refractive-index glue is less than that of the outer cladding of the bare optical fiber.
After the curing the micro-droplet, before the covering the low refractive index glue on the outer surfaces of the bare optical fiber and the micro-droplet, the method further comprises:
and straightening the bare optical fiber with the micro liquid drops and then installing the bare optical fiber on the cooling side of a cooling device.
Wherein, the bare optical fiber with the micro liquid drops is installed on the cooling side of a cooling device after being straightened, and the method further comprises the following steps:
and straightening the bare optical fiber with the micro liquid drops and attaching the bare optical fiber to the wall surface of the cold plate.
Wherein, removing a section of coating layer on the surface of the optical fiber to expose the bare optical fiber, further comprising:
removing a section of coating layer on the middle surface of a complete optical fiber to expose the bare optical fiber; or
And removing a section of coating layer on the end surfaces of two optical fibers of the same type, and performing section cutting and fusion welding on the two exposed bare optical fibers to form a section of bare optical fiber.
Wherein the solidifying the micro-droplets further comprises:
curing the micro-droplets using ultraviolet radiation.
Wherein, cover low refractivity glue in the surface of the naked fibre of optic fibre and little liquid drop, solidify the low refractivity glue in order to form the encapsulation layer, further include:
covering the low-refractive-index glue on the outer surfaces of the bare optical fiber and the micro liquid drop and covering the low-refractive-index glue on the peeling cut of the coating layer;
and curing the low-refractive-index glue by adopting ultraviolet radiation to form the packaging layer.
After the high refractive index glue forms a plurality of tiny droplets distributed at intervals under the action of gravity and liquid surface tension, and before the tiny droplets are solidified, the method further comprises the following steps:
removing a portion of the micro-droplets to adjust a pitch between the micro-droplets.
The embodiment of the invention also provides an auxiliary tool for assisting the optical fiber cladding light stripping process method, which comprises a glue coating tool and a micro-droplet forming tool;
the glue coating tool comprises a coating table, wherein the surface of the coating table is provided with at least one U-shaped through groove, the width of the U-shaped through groove is larger than the diameter of a bare optical fiber, and glue with a high refractive index is filled in the U-shaped through groove;
the micro-droplet forming tool comprises a suspension table, bosses for fixing optical fibers are respectively arranged at two ends of the suspension table, and the distance between the two bosses is larger than the length of the bare optical fiber.
The optical fiber bare fiber fixing device comprises a bare fiber, and is characterized by further comprising a cooling device, wherein the cooling side of the cooling device is provided with an installation position for fixing the bare fiber.
The stripping process method and the auxiliary tool for the optical fiber cladding light provided by the embodiment of the invention utilize gravity and liquid surface tension to enable the glue coated on the surface of the bare optical fiber to spontaneously form tiny liquid drops with tiny sizes, mutual independence and certain intervals. The optical fiber cladding light is stripped in the micro liquid drops in a segmented mode, so that the temperature is effectively reduced, and the reliability is enhanced. Compared with the prior art, the stripping process method does not need precise instruments and complex tools, is simple and easy to implement, strong in operability and low in cost, can effectively reduce the temperature, can also obviously improve the production efficiency, can realize the cladding light stripping process steps of a plurality of optical fibers within several minutes, is suitable for stripping the cladding light of the output optical fibers of the LD module, and is particularly suitable for high-power optical fiber lasers or optical fiber coupling direct semiconductor lasers with dozens of LD modules.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for stripping cladding light of an optical fiber according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of a coating removal optical fiber and glue application location in a method according to an embodiment of the present invention;
FIG. 3 is a top view of a glue coating tool used in a method according to an embodiment of the invention;
FIG. 4 is a side view of the glue application tooling of FIG. 3;
FIG. 5 is a front view of a micro-droplet forming tool used in a method according to an embodiment of the invention;
FIG. 6 is a schematic diagram of a step of solidifying micro droplets in a method according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a step of forming an encapsulation layer in the method according to the embodiment of the invention.
Description of reference numerals:
1. an optical fiber; 11. Bare optical fiber; 12. A coating layer;
121. stripping the cut; 2. Glue coating tooling; 21. A U-shaped through groove;
3. high refractive index glue; 31. Micro liquid droplets; 4. Forming a tool for micro liquid drops;
41. a boss; 5. Ultraviolet radiation; 6. A cold plate;
7. a tin foil tape; 8. And (7) packaging the layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of a described object is changed, the relative positional relationships may also be changed accordingly. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
It is to be understood that, unless otherwise expressly specified or limited, the term "coupled" is used broadly, and may, for example, refer to directly coupled devices or indirectly coupled devices through intervening media. Specific meanings of the above terms in the embodiments of the invention will be understood to those of ordinary skill in the art in specific cases.
As shown in fig. 1, the optical fiber cladding light stripping process provided by the present invention includes the following steps:
step S100: removing a section of coating layer 12 on the surface of the optical fiber 1 to expose an optical fiber bare fiber 11;
step S200: covering the high-refractive-index glue 3 on the outer surface of the bare optical fiber 11;
step S300: suspending and standing the bare optical fiber 11 in the air, forming a plurality of micro liquid drops 31 distributed at intervals by the high-refractive-index glue 3 under the action of gravity and liquid surface tension, and solidifying the micro liquid drops 31;
step S400: and covering the low-refractive-index glue on the outer surfaces of the bare optical fiber 11 and the micro liquid drop 31, and curing the low-refractive-index glue to form the packaging layer 8.
In order to make the technical solutions and advantages of the present invention more clearly described, the following describes embodiments of the present invention with reference to fig. 2 to 7.
Step S100: a section of the coating layer 12 on the surface of the optical fiber 1 is removed to expose the bare optical fiber 11.
Specifically, as shown in fig. 2, the coating layer 12 should be stripped off to ensure that the stripping cut 121 is relatively flat, and after the bare optical fiber 11 is exposed, the bare optical fiber can be wiped clean with a dust-free cloth dipped with absolute ethyl alcohol or other volatile cleaning agents. The dashed lines in fig. 2 indicate the areas where the high refractive index glue 3 is to be applied.
Step S200: the high refractive index glue 3 is coated on the outer surface of the bare optical fiber 11.
Specifically, as shown in fig. 3, the high refractive index glue 3 may be manually coated on the outer surface of the bare optical fiber 11, or the glue coating tool 2 may be used to uniformly coat the high refractive index glue 3. The edge of the coated area of the high refractive index glue 3 is at a distance from the peeling cut 121.
Step S300: the optical fiber bare fiber 11 is suspended and placed still, the high-refractive-index glue 3 forms a plurality of micro droplets 31 distributed at intervals under the action of gravity and liquid surface tension, and the micro droplets 31 are solidified.
Specifically, as shown in fig. 5 and 6, the bare optical fiber 11 coated with the high refractive index glue 3 is kept in a horizontal straight state, and then is suspended and left standing for more than five seconds, so that the high refractive index glue 3 has good fluidity on the surface of the bare optical fiber 11, and thus the high refractive index glue 3 coated on the bare optical fiber 11 forms separated, independent, spherical or ellipsoidal micro-droplets 31 under the tension of gravity and the liquid surface. The fine droplets 31 are then solidified and fixed to the bare optical fiber 11. The curing may be by UV curing or other curing methods.
Step S400: and covering the low-refractive-index glue on the outer surfaces of the bare optical fiber 11 and the micro liquid drop 31, and curing the low-refractive-index glue to form the packaging layer 8.
Specifically, as shown in fig. 7, the bare optical fiber 11 and the minute droplets 31 are covered with a low refractive index glue having a refractive index lower than that of the outer cladding of the bare optical fiber 11. The filled low refractive index glue may also go over the peeling cut 121 of the coating layer 12 so that the bare optical fiber 11 is completely encapsulated. And curing the low-refractive-index glue after the low-refractive-index glue is covered to form the packaging layer 8. The curing may be by UV curing or other curing methods. The encapsulation layer 8 may serve to encapsulate and enhance heat dissipation.
The refractive index of the high-refractive-index glue 3 is greater than that of the outer cladding of the bare optical fiber 11, and the refractive index of the low-refractive-index glue is less than that of the outer cladding of the bare optical fiber 11. And the glue 3 with high refractive index and the glue with low refractive index both have high transmittance to cladding light. More specifically, the high refractive index glue 3 may be a UV glue, such as Norland 65, No. 61 glue. The low refractive index glue may also be a UV glue, such as Norland 1369 or the less expensive homemade QUINSON H819 glue; or a non-UV curable glue.
The method for stripping the cladding light of the optical fiber provided by this embodiment utilizes gravity and liquid surface tension to make the glue coated on the surface of the bare optical fiber 11 spontaneously form tiny droplets 31 with tiny sizes, independence and certain intervals. The fiber cladding light is stripped in the tiny droplets 31 in a segmented mode, so that the temperature is effectively reduced, and the reliability is enhanced. Compared with the prior art, the stripping process method does not need precise instruments and complex tools, is simple and easy to implement, strong in operability and low in cost, can effectively reduce the temperature, can also obviously improve the production efficiency, can realize the cladding light stripping process steps of a plurality of optical fibers within several minutes, is suitable for stripping the cladding light of the output optical fibers of the LD module, and is particularly suitable for high-power optical fiber lasers or optical fiber coupling direct semiconductor lasers with dozens of LD modules.
On the basis of the above embodiment, there may be two implementation manners of step S100, where one manner is: removing a section of coating layer 12 on the middle surface of a complete optical fiber 1 to expose an optical fiber bare fiber 11; the other mode is as follows: removing a section of coating layer 12 on the end surfaces of two optical fibers 1 of the same type, and cutting and welding the sections of the exposed bare optical fibers 11 to form a section of bare optical fiber 11.
On the basis of the above embodiment, after step S300, before step S400, the method further includes:
step S310: the bare optical fiber 11 with the fine droplets 31 is straightened and attached to the cooling side of the cooling device.
Specifically, as shown in fig. 7, the cooling device may employ a cold plate 6. The optical fiber bare fiber 11 with the tiny liquid drops 31 is horizontally straightened and then attached to a cold plate 6, and the optical fiber with the coating layers 12 at two ends is fixed by the tin foil adhesive tape 7 in an auxiliary mode, so that the next step is facilitated. The cold plate 6 may be a water-cooled plate or an oil-cooled plate having a cooling function, and more specifically, the cold plate 6 may be a water-cooled plate of a high-power laser.
On the basis of the above embodiment, after the high refractive index glue 3 forms a plurality of micro droplets 31 distributed at intervals under the action of gravity and liquid surface tension, before solidifying the micro droplets 31, the method further comprises: a part of the minute liquid droplets 31 is removed to adjust the intervals between the minute liquid droplets 31.
Specifically, after the micro droplets 31 are naturally arranged and formed, a cotton swab or other devices can be used manually to remove a part of the micro droplets 31 according to actual use requirements and heat dissipation requirements, so that the distance between the micro droplets 31 can be increased, and the heat distribution is more uniform. For example, a loose point may be distributed near one end of the fiber laser, and then the compactness is gradually increased along the length direction of the bare fiber 11.
As shown in fig. 3 to 6, an embodiment of the present invention further provides an auxiliary tool for manufacturing the optical fiber stripper as described above, including a glue application tool 2 and a micro-droplet forming tool 4.
The droplet forming tool 4 includes a suspension table, wherein bosses 41 for fixing the optical fiber are respectively provided at both ends of the suspension table, and a distance between the two bosses 41 is greater than a length of the bare optical fiber 11, so that it is possible to prevent the peeling cuts 121 of the coating layers 12 at both ends of the bare optical fiber 11 from being contaminated. In addition, the suspension table can also adopt a mode that a groove is formed in the middle part to realize the suspension of the bare optical fiber 11.
The following description is made in conjunction with a specific method of manufacturing an optical fiber stripper.
First, step S100 is executed, as shown in fig. 2, after the coating layer 12 of the optical fiber 1 is removed, the bare optical fiber 11 is exposed, and the peeling cut 121 of the coating layer 12 of the optical fiber 1 should be relatively flat. The bare optical fiber 11 is wiped clean with a dust-free cloth dipped with absolute ethyl alcohol or other volatile cleaning agents.
Then, step S200 is performed, as shown in fig. 3, a high refractive index glue 3 having a refractive index higher than that of the outer cladding of the bare optical fiber 11 is uniformly coated on the bare optical fiber 11 at a position away from the peeling cut 121 of the coating layer 12. In order to make the high refractive index glue 3 more uniformly coated. The high refractive index glue 3 can be uniformly coated using the glue coating tool 2. The glue coating tool 2 comprises at least one U-shaped through groove 21 with the width slightly larger than the diameter of the bare optical fiber 11. As shown in fig. 3 and 4, the U-shaped through groove 21 is filled with high refractive index glue 3. The length of the optical fiber bare fiber 11 exposed after the coating layer 12 of the optical fiber 1 is stripped should be longer than that of the glue coating tool 2, so as to avoid the stripping cut 121 of the coating layer 12 from being contaminated by glue. Before glue coating operation is carried out, the cleaned bare optical fiber 11 needs to be straightened, then the bare optical fiber is horizontally placed in the U-shaped through groove 21 filled with the high-refractive-index glue 3, and the optical fiber 1 is slightly rotated, so that the bare optical fiber 11 is wrapped with a thin layer of the high-refractive-index glue 3.
Next, step S300 is executed, as shown in fig. 5 and 6, the bare optical fiber 11 wrapped with the high refractive index glue 3 is kept in a horizontal straight state, and the optical fiber with the coating layers 12 at the two ends of the bare optical fiber 11 is temporarily fixed on the bosses 41 at the two sides of the micro-droplet forming tool 4 by using an adhesive tape or other methods. Then suspending and standing for at least more than ten seconds, the high refractive index glue 3 wrapped on the bare optical fiber 11 forms micro droplets 31 separated from each other under the dual action of gravity and liquid surface tension. These tiny droplets 31 are cured again by ultraviolet radiation 5.
Then, step S310 and step S400 are executed, as shown in fig. 7, the bare optical fiber 11 with the micro-droplets 31 is horizontally straightened, and then attached to the cold plate 6, and the optical fiber 1 with the coating layer 12 at both ends is fixed with the help of the tin foil tape 7. Then, the bare optical fiber 11 and the micro-droplets 31 are covered with a low refractive index glue having a refractive index lower than that of the outer cladding of the bare optical fiber 11. The filled low refractive index glue should also be submerged in the peeling cut 121 of the coating layer 12. And after the low refractive index glue is covered, curing by ultraviolet radiation 5 to form a packaging layer 8.
The embodiment of the invention also provides a device manufactured by the stripping process method, which comprises the bare optical fiber 11, wherein the bare optical fiber 11 is fixedly provided with a plurality of micro droplets 31 distributed at intervals in the axial direction, and the outer layers of the bare optical fiber 11 and the micro droplets 31 are further covered with the packaging layer 8. The refractive index of the outer cladding of the bare optical fiber 11 is smaller than that of the droplet 31, and the refractive index of the outer cladding of the bare optical fiber 11 is larger than that of the encapsulation layer 8. The plurality of tiny droplets 31 distributed at intervals are fixedly arranged in the axial direction of the bare optical fiber 11, and the refractive index of the tiny droplets 31 is higher than that of the bare optical fiber 11, so that the cladding light of the optical fiber is stripped in sections in the tiny droplets 31, and the tiny droplets 31 have small enough diameter and are spaced at a certain distance, so that the cladding light can be guided out in time, the failure caused by overhigh temperature due to the fact that the adhesive layer absorbs excessive cladding light is avoided, the temperature is effectively reduced, and the reliability is enhanced; meanwhile, the encapsulation layer 8 arranged outside the bare optical fiber 11 and the micro-droplet 31 can also play a role in encapsulation and heat dissipation enhancement.
It can be seen from the above embodiments that, in the stripping process and the auxiliary tool for optical fiber cladding light provided by the present invention, the glue coated on the surface of the bare optical fiber 11 spontaneously forms micro droplets 31 with micro sizes, independence from each other, and a certain distance by using gravity and liquid surface tension. The optical fiber cladding light is stripped in the tiny liquid drops in a segmented mode, the temperature is effectively reduced, and the reliability is enhanced. Compared with the prior art, the stripping process method does not need precise instruments and complex tools, is simple and easy to implement, strong in operability and low in cost, can effectively reduce the temperature, can also obviously improve the production efficiency, can realize the cladding light stripping process steps of a plurality of optical fibers within several minutes, is suitable for stripping the cladding light of the output optical fibers of the LD module, and is particularly suitable for high-power optical fiber lasers or optical fiber coupling direct semiconductor lasers with dozens of LD modules.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A stripping process method for optical fiber cladding light is characterized by comprising the following steps:
removing a section of coating layer on the surface of the optical fiber to expose the bare optical fiber;
covering the outer surface of the bare optical fiber with high-refractive-index glue;
keeping the optical fiber bare fiber coated with the high-refractive-index glue in a horizontal straightening state, suspending and standing the optical fiber bare fiber, forming a plurality of tiny liquid drops distributed at intervals by the high-refractive-index glue under the action of gravity and liquid surface tension, and solidifying the tiny liquid drops;
covering low-refractive-index glue on the outer surfaces of the bare optical fibers and the micro liquid drops, and curing the low-refractive-index glue to form a packaging layer;
the refractive index of the high-refractive-index glue is greater than that of the outer cladding of the bare optical fiber, and the refractive index of the low-refractive-index glue is less than that of the outer cladding of the bare optical fiber.
2. The method according to claim 1, wherein after the curing the micro-droplets, before the covering the low refractive index glue on the outer surfaces of the bare optical fibers and the micro-droplets, further comprises:
and straightening the bare optical fiber with the micro liquid drops and then installing the bare optical fiber on the cooling side of a cooling device.
3. The method according to claim 2, wherein the bare optical fiber with the micro-droplets is installed on a cooling side of a cooling device after being straightened, and further comprising:
and straightening the bare optical fiber with the micro liquid drops and attaching the bare optical fiber to the wall surface of the cold plate.
4. The method of claim 1, wherein removing a coating layer from a surface of the optical fiber to expose a bare optical fiber, further comprises:
removing a section of coating layer on the middle surface of a complete optical fiber to expose the bare optical fiber; or alternatively
And removing a section of coating layer on the end surfaces of two optical fibers of the same type, and performing section cutting and welding on the two exposed bare optical fibers to form a section of bare optical fiber.
5. The method of claim 1, wherein said solidifying said microdroplets further comprises:
curing the micro-droplets using ultraviolet radiation.
6. The method of claim 1, wherein the step of applying a low refractive index glue to the outer surfaces of the bare optical fibers and the micro-droplets, and curing the low refractive index glue to form an encapsulation layer further comprises:
covering the low-refractive-index glue on the outer surfaces of the bare optical fiber and the micro liquid drop and covering the low-refractive-index glue on the peeling cut of the coating layer;
and curing the low-refractive-index glue by adopting ultraviolet radiation to form the packaging layer.
7. The method according to any one of claims 1 to 6, wherein after the high refractive index glue forms a plurality of spaced micro droplets under the action of gravity and liquid surface tension, before the solidifying the micro droplets, further comprising:
removing a portion of the micro-droplets to adjust a pitch between the micro-droplets.
8. An auxiliary tool for assisting the optical fiber cladding light stripping process method according to any one of claims 1 to 7, which is characterized by comprising a glue coating tool and a micro-droplet forming tool;
the glue coating tool comprises a coating table, wherein at least one U-shaped through groove is formed in the surface of the coating table, the width of the U-shaped through groove is larger than the diameter of a bare optical fiber, and glue with a high refractive index is filled in the U-shaped through groove;
the micro-droplet forming tool comprises a suspension table, bosses for fixing optical fibers are respectively arranged at two ends of the suspension table, and the distance between the two bosses is larger than the length of the bare optical fiber.
9. The auxiliary tool according to claim 8, further comprising a cooling device, wherein a mounting position for fixing the bare optical fiber is arranged on a cooling side of the cooling device.
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