Melting process for bundled optical fibers

Abstract

The invention discloses a melting process for bundled optical fibers, and relates to the technical field of bundled optical fibers. The method comprises the following steps: SS01, selecting a quartz sleeve with proper inner and outer diameters outside a bare optical fiber; sS02, the quartz sleeve is subjected to vacuum pumping treatment in a vacuum pumping mode; sS03, heating and melting are carried out through the oxyhydrogen firework head, so that the melting areas of the quartz sleeve and the optical fiber bundle are heated, softened and shrunk into a whole; sS04, performing finish machining on the end part of the bundling head after cooling and forming; and SS05, assembling the matched metal insertion core and tail tube. According to the invention, by designing a clustered optical fiber fusion process scheme and fusing the optical fiber bundles into a compact whole, the risk problems of liquid seepage, glue falling and the like of a clustered head in a conventional assembly process are solved, the overall quality of a product is greatly improved, and the production cost is reduced. Meanwhile, by means of the bundling optical fiber fusion technology, the product has the advantages of being fast in packaging, resistant to high temperature, easy to grind, short in production period, capable of improving product reliability, small in thermal stress and free of seepage.

Description

Technical Field

[0001] The invention belongs to the technical field of optical fiber bundling, and in particular relates to a melting process for optical fiber bundling. Background Art

[0002] With the development of industries such as laser projection, laser platemaking and laser lighting, the application of bundled optical fibers is becoming more and more extensive. Existing bundled optical fibers are mainly bonded with inorganic glue or organic glue to encapsulate the optical fiber bundle into a required shape.

[0003] However, during the use of glued bundled optical fibers, long-term high-power laser light will cause scattering and reflection on the end face. Part of the high-power laser will be reflected back to the glue connection of the optical fiber bundle, causing cracking and debonding problems on the end face of the bundled optical fiber, thereby causing damage.

[0004] In addition, since the gaps between the optical fiber end faces are filled with glue, the glue curing time is relatively long during the production process, and glue may fall off during the grinding process, necessitating glue replenishment and repair. This makes it difficult to shorten the production cycle of bundled optical fiber products to a certain extent. Summary of the invention

[0005] The purpose of the present invention is to provide a melting process for bundling optical fibers. By designing a melting process for bundling optical fibers and melting the optical fiber bundles into a tight whole, the risks of liquid seepage, glue loss, etc. in the bundling heads of conventional assembly processes are solved, thereby greatly improving the overall quality of the product. At the same time, the melting process for bundling optical fibers can enable the product to have the advantages of fast packaging, high temperature resistance, easy grinding, shortened production cycle, improved product reliability, low thermal stress and no liquid seepage.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a melting process for bundling optical fibers, comprising the following steps: SS01 Prepare the fiber bundle in a clean room, select a fixed-length molten area at the end of the bare fiber and clean it to ensure that there are no impurities, and select a quartz sleeve with appropriate inner and outer diameters to be placed outside the bare fiber; SS02 evacuates the quartz sleeve by vacuuming to ensure a certain degree of vacuum inside the quartz sleeve of the bare optical fiber section and applies an inward contraction force in advance; SS03 uses a hydrogen-oxygen flame to heat and melt the fused areas of the quartz sleeve and the optical fiber bundle, and the shrinkage force in SS02 causes the optical fiber and the quartz sleeve to shrink into one body after being softened at high temperature to form a bundle head. SS04 After cooling and forming, the end of the cluster head is cut and the end face of the cluster head is finely processed; SS05 Assemble the matching metal ferrule and tail tube on the optical fiber bundle head to ensure that the bundle head can be inserted smoothly without damaging the bundle head; SS06 According to the use requirements, the outer sheath is coated on the outer surface of the optical fiber bundle away from the bundling head and the position of the bundling head away from the metal ferrule to make a bundled optical fiber; SS07 evaluates the melting effect based on the indicators and tests of bubble volume in the melting zone, end face diameter, end face non-roundness, finished product straightness, and insertion loss, makes appropriate adjustments based on the corresponding melting effect, and continuously optimizes the process.

[0007] Furthermore, after the quartz sleeve in the SS01 is inserted, bare optical fiber segments exist on the outside of both ends of the quartz sleeve.

[0008] Furthermore, when the quartz sleeve in the SS02 is evacuated, a vacuuming tool and a first expansion seal are respectively arranged between the two ends of the quartz sleeve and the optical fiber bundle.

[0009] Furthermore, a second expansion seal is provided in the vacuuming tooling, and the optical fiber bundle between the vacuuming tooling and the first expansion seal is in a straight state.

[0010] Furthermore, when the quartz sleeve in the SS02 is evacuated, the vacuuming tool continuously evacuates the vacuum and is connected to an electronic instrument to measure the pressure value.

[0011] Furthermore, the oxyhydrogen flame heads in the SS03 are arranged in a plurality and are evenly spaced on an annular bracket, the annular bracket is sleeved on the outside of the quartz sleeve, and the annular bracket has a translation function, and the quartz sleeve is heated and melted by the oxyhydrogen flame heads.

[0012] Furthermore, the cutting in SS04 is to cut out a certain length of the bundling head and the bare optical fiber segment outside the bundling head.

[0013] Furthermore, a gap is formed between the metal insert and the clustering head, and the gap is filled with high temperature resistant glue.

[0014] Furthermore, the adjustment of the optimization process in SS07 includes adjusting the hydrogen flow rate to adjust the flame temperature, and adjusting the distance between the burner outlet and the quartz sleeve to adjust the heating power.

[0015] Furthermore, the SS07 adjusts the process accordingly according to the different product models, cluster head sizes, core numbers and the appropriate quartz sleeve sizes.

[0016] The present invention has the following beneficial effects: The present invention designs a bundled optical fiber melting process solution, which melts the optical fiber bundle into a tight whole, thereby solving the risk problems of liquid seepage, glue loss, etc. in the conventional assembly process of the bundling head, thereby greatly improving the overall quality of the product. At the same time, the bundled optical fiber melting process can make the product have the advantages of fast packaging, high temperature resistance, easy grinding, shortened production cycle, improved product reliability, small thermal stress and no liquid seepage.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of a melting process for bundling optical fibers according to the present invention; In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1-optical fiber bundle, 2-quartz sleeve, 3-first expansion seal, 4-vacuum tooling, 401-second expansion seal. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1 As shown, the present invention is a melting process for bundling optical fibers, comprising the following steps: SS01 Prepare the fiber bundle 1 in a clean room, select a fixed-length melting area at the end of the bare fiber and clean it to ensure that there are no impurities, and select a quartz sleeve 2 with appropriate inner and outer diameters to be placed outside the bare fiber; SS02 evacuates the quartz sleeve 2 by means of vacuum pumping to ensure that a certain degree of vacuum is formed inside the quartz sleeve 2 of the bare optical fiber section, and applies an inward contraction force in advance; SS03 is heated and melted by an oxyhydrogen flame to soften the fused areas of the quartz sleeve 2 and the optical fiber bundle 1. The shrinkage force in SS02 causes the optical fiber and the quartz sleeve 2 to shrink into one body after being softened at high temperature to form a bundle head. SS04 After cooling and forming, the end of the cluster head is cut and the end face of the cluster head is finely processed; SS05 Assemble the matching metal ferrule and tail tube on the bundle head of optical fiber bundle 1 to ensure that the bundle head can be inserted smoothly without damaging the bundle head; SS06 According to the use requirements, an outer sheath is coated on the outer surface of the optical fiber bundle 1 away from the bundling head and the position of the bundling head away from the metal ferrule to make a bundled optical fiber; SS07 evaluates the melting effect based on the indicators and tests of bubble volume in the melting zone, end face diameter, end face non-roundness, finished product straightness, and insertion loss, makes appropriate adjustments based on the corresponding melting effect, and continuously optimizes the process.

[0022] Among them, after the quartz sleeve 2 in the SS01 is inserted, there are bare optical fiber segments on the outside of both ends of the quartz sleeve 2.

[0023] When the quartz sleeve 2 in the SS02 is evacuated, a vacuuming tool 4 and a first expansion seal 3 are respectively arranged between the two ends of the quartz sleeve 2 and the optical fiber bundle 1 .

[0024] The vacuuming tooling 4 is provided with a second expansion seal 401 , and the optical fiber bundle 1 between the vacuuming tooling 4 and the first expansion seal 3 is in a straight state.

[0025] When the quartz sleeve 2 in the SS02 is evacuated, the vacuuming tool 4 continuously evacuates the vacuum and is connected to an electronic instrument to measure the pressure value.

[0026] Among them, the oxyhydrogen flame heads in the SS03 are arranged in a plurality and are evenly spaced on an annular bracket, the annular bracket is sleeved on the outside of the quartz sleeve 2, and the annular bracket has a translation function, and the quartz sleeve 2 is heated and melted by the oxyhydrogen flame heads.

[0027] The cutting in SS04 is to cut out a certain length of the bundling head and the bare optical fiber segment outside the bundling head.

[0028] A gap is formed between the metal insert and the clustering head, and the gap is filled with high temperature resistant glue.

[0029] The adjustment of the optimization process in SS07 includes adjusting the hydrogen flow rate to adjust the flame temperature, and adjusting the distance between the burner outlet and the quartz sleeve 2 to adjust the heating power.

[0030] Among them, the SS07 has corresponding process adjustments for different types of products, cluster head sizes, core numbers and adapted quartz sleeve 2 size adjustments.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A melting process for bundling optical fibers, characterized in that: The following steps are involved: SS01 Prepare the fiber bundle (1) in a clean room, select a fixed-length molten area at the end of the bare fiber and clean it to ensure that there are no impurities, and select a quartz sleeve (2) with appropriate inner and outer diameters to be placed outside the bare fiber; SS02 performs a vacuum treatment on the quartz sleeve (2) by means of vacuum pumping, ensuring that a certain vacuum degree is formed inside the quartz sleeve (2) of the bare optical fiber section, and applying an inward contraction force in advance; SS03 is heated and melted by an oxyhydrogen flame so that the fused areas of the quartz sleeve (2) and the optical fiber bundle (1) are softened by heat, and the shrinkage force in SS02 causes the optical fiber and the quartz sleeve (2) softened by high temperature to shrink into one body to form a bundle head; SS04 After cooling and forming, the end of the cluster head is cut and the end face of the cluster head is finely processed; SS05 Assemble the matching metal ferrule and tail tube on the bundle head of the optical fiber bundle (1) to ensure that the bundle head can be inserted smoothly without damaging the bundle head; SS06 According to the use requirements, an outer sheath is coated on the outer surface of the optical fiber bundle (1) away from the bundling head and the position of the bundling head away from the metal ferrule to make a bundled optical fiber; SS07 evaluates the melting effect based on the indicators and tests of bubble volume in the melting zone, end face diameter, end face non-roundness, finished product straightness, and insertion loss, makes appropriate adjustments based on the corresponding melting effect, and continuously optimizes the process.

2. A melting process for bundling optical fibers according to claim 1, characterized in that: After the quartz sleeve (2) in the SS01 is inserted, bare optical fiber segments exist on the outside of both ends of the quartz sleeve (2).

3. A melting process for bundling optical fibers according to claim 2, characterized in that: When the quartz sleeve (2) in the SS02 is evacuated, a vacuuming tool (4) and a first expansion seal (3) are respectively arranged between the two ends of the quartz sleeve (2) and the optical fiber bundle (1).

4. A melting process for bundling optical fibers according to claim 3, characterized in that: A second expansion seal (401) is provided in the vacuuming tooling (4), and the optical fiber bundle (1) between the vacuuming tooling (4) and the first expansion seal (3) is in a straight state.

5. A melting process for bundling optical fibers according to claim 3, characterized in that: When the quartz sleeve (2) in the SS02 is evacuated, the vacuuming tool (4) continuously evacuates and is connected to an electronic instrument to measure the pressure value.

6. A melting process for bundling optical fibers according to claim 1, characterized in that: The oxyhydrogen flame heads in the SS03 are arranged in a plurality and are evenly spaced on an annular bracket, the annular bracket is sleeved on the outside of the quartz sleeve (2), and the annular bracket has a translation function, and the quartz sleeve (2) is heated and melted by the oxyhydrogen flame heads.

7. A melting process for bundling optical fibers according to claim 1, characterized in that: The cutting in the SS04 is to cut out a certain length of the bundling head and the bare optical fiber segment outside the bundling head.

8. The melting process for bundling optical fibers according to claim 1, characterized in that: A gap is formed between the metal insert and the clustering head, and the gap is filled with high temperature resistant glue.

9. A melting process for bundling optical fibers according to claim 1, characterized in that: The adjustment of the optimization process in the SS07 includes adjusting the hydrogen flow rate to adjust the flame temperature, and adjusting the distance between the burner outlet and the quartz sleeve (2) to adjust the heating power.

10. A melting process for bundling optical fibers according to claim 9, characterized in that: The SS07 has corresponding process adjustments for different product models, cluster head sizes, core numbers, and adapted quartz sleeve (2) dimensions.

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