TW202016589A - Optical fiber bundling structure and manufacturing method thereof preventing the efficiency of fiber transmission from being influenced by the external environment - Google Patents

Abstract

The invention relates to an optical fiber bundling structure and a manufacturing method thereof. After the bundling ends of multiple input optical fibers are threaded into the bundling tube body, the input optical fibers and the bundling tube body can be fused to form a unitary structure through the heat fusion operation. After the multiple input optical fibers and the bundling tube body are fused with each other, they can then be fused with the output optical fiber, so that the input cores in the multiple input optical fibers and the output cores in the output optical fiber are connected together. As a result, the total power outputted by the multiple input optical fibers can be stably transmitted to the output fiber for use, so as to exhibit the effect of high power output. A reduction in the efficiency of fiber transmission resulting from the influence of the external environment hardly occurs, thereby achieving the purpose of improving the overall utility and service life.

Description

Optical fiber combining structure and manufacturing method thereof

The invention provides an optical fiber bundling structure and a manufacturing method thereof, in particular, a plurality of input optical fibers which are penetrated in a bundling tube can be fused to an output optical fiber through thermal fusion, so that the total output power of the plurality of input optical fibers can be stably transmitted to The output fiber is used, which has the effect of high power output, and it is not easy to reduce the efficiency of fiber transmission due to the impact of the external environment.

With the advent of the high-tech era, the processing technology of industrial manufacturing production has been continuously improved. The traditional mechanical processing process can only process the appearance of the processed objects, but it is impossible for the processing, engraving or cutting of the processed objects. Completion, in addition to high-tech semiconductor products such as wafers, components, thin-plate drilling, cutting, etc., can not be processed; therefore, the laser processing process has been developed, and the process is widely used. In the fields of precision industry, excitation detection, spectroscopy, or plasma dynamics, all processes can be processed through lasers. Traditional laser processing cannot avoid mechanical clamping of lenses, high-precision translation stages, etc., but through optical lasers For laser processing of pulsed light, optical fiber lasers have the advantages of compact structure, high efficiency and the ability to produce high-quality laser beams. Therefore, optical fiber lasers are widely used in the process of material processing. The radiation has the advantages of very good stability, small size, easy to carry and easy to set up, so it has a place in the application of optical communication, spectral measurement and optical analysis, and because of its very good good collimation and high The power and high light intensity also make the laser source processing system widely used in industry.

In addition, because of the high-power fiber laser devices, especially the thousands and 10,000-watt fiber laser devices, it has a wide range of industrial applications, so under the rapid development of high-power laser systems, there are manufacturers The high-energy beam combining of multiple input fibers is introduced into the output fiber to achieve the effect of high-power laser output. The general high-energy beam combining method is to use the complex input fiber to guide the light using free space, and then collect the output by the lens In optical fiber, however, it is easily affected by factors such as environmental humidity and cleanliness through free space, resulting in poor service life and optical characteristics.

Therefore, how to solve the above-mentioned lack of inconvenience and inconvenience is the direction of improvement for those engaged in this industry.

Therefore, in view of the above-mentioned deficiencies, the inventors collected relevant data, and after various evaluations and considerations, they began to design patents for the invention of the optical fiber bundling structure and its manufacturing method.

The main purpose of the present invention is that the plural input optical fibers can be penetrated into the merging tube body and are fused with each other through a hot-melt operation, and after the plural input optical fibers and the merging tube body are fused with each other, they can be fused again The output fiber connects the input core of the complex input fiber and the output core of the output fiber as a whole, so that the total power output from the complex input fiber can be stably transmitted to the output fiber for use, thereby having the effect of high power output and not easy Due to the influence of the external environment, the efficiency of optical fiber transmission is reduced, thereby achieving the purpose of improving the overall effectiveness and service life.

The secondary object of the present invention is that the combining tube body can be used with different types of complex input optical fibers, thereby facilitating the application of different fiber optical systems, thereby achieving the purpose of enhancing the diversity of use and multi-purpose.

Another object of the present invention is that the input core of the complex input optical fiber will not be structurally changed during the manufacturing process, that is, no loss will be generated or introduced, thereby achieving the purpose of high coupling efficiency, stability and reliability.

1‧‧‧ input fiber

10‧‧‧Combination end

11‧‧‧Input core

12‧‧‧Input cladding

13‧‧‧Coated layer

2‧‧‧Combined tube

20‧‧‧Putting space

21‧‧‧Cone

3‧‧‧Output fiber

31‧‧‧Output core

32‧‧‧Output cladding

The first figure is a side sectional view of the present invention.

The second figure is a front sectional view of the present invention.

The third figure is a flowchart of the present invention.

The fourth figure is a side sectional view of another embodiment of the present invention.

The fifth figure is a flowchart of still another embodiment of the present invention.

The sixth figure is a front sectional view of another embodiment of the present invention.

In order to achieve the above-mentioned objectives and effects, the technical means and structure adopted by the present invention, the drawings and details of the preferred embodiments of the present invention are described in detail below. Their features and functions are as follows, so that they can fully understand.

Please refer to the first and second figures, which are side cross-sectional view and front cross-sectional view of the present invention. It can be clearly seen from the figure that the optical fiber combining structure of the present invention includes a plurality of input optical fibers 1 and a combining tube Body 2 and output fiber 3, wherein: on the side of the plurality of input optical fibers 1 are respectively formed a merging end 10 for docking with the output optical fiber 3, and each input optical fiber 1 has an input core 11 at the center, and then input The core 11 is coated with an input cladding 12, and each input optical fiber 1 is provided with a coating layer 13 coated on the outside of the input cladding 12 at a position outside the combining end 10.

The bundling tube 2 is sleeved on the bundling end 10 of the multiple input optical fibers 1 and is made of quartz, glass and other silicon related materials, and a hollow penetration space 20 is formed inside the bundling tube 2 In addition, the merging end 10 of a plurality of input optical fibers 1 is inserted through the setting space 20.

At the center of the output optical fiber 3 is an output core 31 for forming a connection with the input core 11 of the plurality of input optical fibers 1, and the output core 31 is coated with an output cladding 32.

The input fiber 1 can be a single-mode fiber, a multimode fiber, a double-shell fiber, a polarization-maintaining fiber, or a gain fiber that can be used for light source transmission; and the output fiber 3 can be a single-layer fiber or a double-layer fiber .

Please also refer to the third, fourth, fifth, and sixth figures, which are flowcharts of the present invention, a side sectional view of another embodiment, a flowchart of another embodiment, and a front sectional view of another embodiment, It can be clearly seen from the figure that the manufacturing method of the optical fiber bundling structure of the present invention includes the following steps:

(A) First, the bundling ends 10 of the plurality of input optical fibers 1 are arranged adjacent to each other, and penetrate into the hollow penetrating space 20 of the bundling tube body 2.

(B) The heating machine is used to heat the bundling tube 2 at a heating temperature, so that the input cladding 12 on the outside of the multiple input optical fibers 1 is melted with each other, and the periphery of the input cladding 12 is also inside the bundling tube 2 The walls are fused to each other.

(C) Through the cutting machine, the multiple input optical fibers 1 and the combined tube body 2 after the fusion are cut flat.

(D) and after the cutting is completed, the temperature can be heated by the heating machine To fuse the output core 31 of the output optical fiber 3 and the input core 11 of the plural input optical fibers 1 to make them firmly combined into one body, thereby completing the manufacturing process of the present invention.

In the above step (B), it can be used together with the stretching machine to stretch the plural input optical fibers 1 and the merging tube body 2 as a whole through the stretching machine, so that the plural input optical fibers 1 and The overall outer diameter of the beam tube body 2 is reduced and a tapered portion 21 is formed, thereby conforming to output fibers 3 of various sizes.

Furthermore, the heating machine in the above steps (B) and (D) may be a device with a uniform heating function such as a discharge heating machine or an oven heating machine, and in the steps (B) and (D) The heating temperature must be set according to the optical fiber's light efficiency, type, size and other parameter values, where the light efficiency is tested by using an external laser source device (not shown) to input fixed power from the complex input fiber 1 , And measure the parameter value of the optical efficiency at the tapered part 21 of the combining tube 2 or the output optical fiber 3 through an external detection device (not shown). When the optical efficiency is measured in step (B) The range of value is between 0.5~0.05dB, when the average value is about 0.25dB, the heating machine can stop the heating action, and when the step (D) measures the over light efficiency, the range of value is between 1 Between ~0.1dB, when the average value is about 0.5dB, the heating machine can stop the heating action, by which the light efficiency can be used to evaluate and adjust the heating temperature; while the heating operation in step (B), the The heating machine must heat the combined tube body 2 in a uniform manner to avoid loosening or deformation of the structure of the multiple input optical fibers 1, thereby achieving the effect of improving the optical efficiency; in addition, the stretching machine is used The technology is not shown in the drawing, and there are many devices and components inside the stretching machine, which are not the focus of the invention of the present case, so I won’t go into details to understand.

However, in the above steps (B), (C), (D), the heating machine and The cutting machine table is a conventional technology, so the diagram is not shown, and there are many devices and components inside the heating machine and the cutting machine table, and it is not the focus of the invention in this case, so it will not be described in detail to understand.

In addition, before the above step (A), the following steps can be performed first: (A01) The combining end 10 of the plurality of input optical fibers 1 is to remove the coating layer 13 located outside the input cladding 12 first.

In the above step (A01), it is preferable to use an etching solution, but in practical applications, the coating layer 13 of the input optical fiber 1 can also be removed by mechanical polishing. However, the removal of the coating layer 13 There are many ways. The simple modification and equivalent property changes of the description and drawings of the present invention should be included in the patent scope of the present invention in the same way, and it should be Chen Ming.

In order to have a clearer understanding of the manufacturing method of the present invention, the following two usage methods are used as examples for illustration: when the complex input optical fiber 1 is used in the first manner, it can be seven multimodes of the same type in a bundle shape For the optical fiber (as shown in the second figure), the diameter of each input fiber 1 (multimode fiber) is 125 μm, and the diameter of the input core 11 of the input fiber 1 is 105 μm, and the input cladding 12 of the input fiber 1 and the coating The cladding 13 is 1 μm and 19 μm, respectively. The part of the combined input end 10 of the plurality of input optical fibers 1 can be removed by using an etching solution first, and the seven input optical fibers 1 are bundled through the tube diameter as Inside the penetration space 20 of the 1000 μm bundling tube 2, the bundling tube 2 is heated to make the input cladding 12 of the seven input optical fibers 1 melt, and then melt into each other, and The periphery of the input cladding 12 will be melted and integrated with the inner side wall surface of the combined tube body 2, and in the process of hot melting, the combined tube body 2 is stretched to cooperate with the stretching machine at the same time, thereby making Complex input fiber 1 and The bundling tube 2 is tapered and the outer diameter of the stretched portion is reduced to 400 μm. After the input optical fiber 1 and the bundling tube 2 are cooled, the multiple input fibers 1 and The beam tube 2 is cut flat so that the end surfaces of the multiple input optical fibers 1 and the combined tube body 2 are flat, and then the multiple input optical fibers 1 and the output optical fiber 3 with a tube diameter of 400 μm are subjected to thermal fusion treatment to make the multiple input The input core 11 of the optical fiber 1 and the output core 31 of the output optical fiber 3 are fused and connected into one body, thereby achieving the purpose of stably coupling the input cores 11 of the seven input optical fibers 1 to the output core 31 of the output optical fiber 3, and making the seven The total power output from the input fiber 1 can be stably transmitted to the output fiber 3 for use, thereby having the effect of high power output, and it is not easy to reduce the efficiency of fiber transmission due to the influence of the external environment, so as to improve the overall utility and service life.

However, when the complex input optical fiber 1 is used in the second mode, it can be a single-mode optical fiber and six multimode optical fibers surrounded by the single-mode optical fiber (as shown in the sixth figure), the diameter of the single-mode optical fiber Is 125 μm, and the diameter of the input core 11 of the input fiber 1 (single-mode fiber) is 10 μm, while the input cladding 12 and the coating layer 13 of the single-mode fiber are 96 μm and 19 μm, respectively. In addition, the input fiber 1 (multiple Mode fiber) has a diameter of 125 μm, and the input core 11 of the multimode fiber has a diameter of 105 μm, while the input cladding 12 and coating layer 13 of the multimode fiber are respectively 1 μm and 19 μm, when a single mode The optical fiber and the six multimode optical fibers are removed from the coating layer 13 by using an etching solution, and then are penetrated into the penetration space 20 of the bundling tube body 2 and are implemented according to the aforementioned steps of hot-melting, stretching, flattening, and hot-melting. The complex input optical fiber 1 is combined with the output optical fiber 3 to be used with different types of optical fibers, which is beneficial to the application of different optical fiber systems.

The above-mentioned plural input optical fibers 1 and the combined tube body 2 are drawn by the drawing machine to the same diameter as the output fiber 3, but in actual application, they only need to be drawn to the phase It is close to the size of the output fiber 3 and the input core 11 of the plurality of input optical fibers 1 and the output core 31 of the output optical fiber 3 are connected to form a solid combination.

In addition, the arrangement and number of the complex input optical fibers 1 can be increased or decreased depending on the output power and the demand of the optical fiber output system.

The present invention has the following advantages:

(1) The plural input optical fibers 1 can be threaded into the bundling tube body 2 and are fused with each other through a hot-melt operation, and can be fused again after the plural input optical fibers 1 and the bundling tube body 2 are fused with each other In the output optical fiber 3, the input core 11 of the complex input optical fiber 1 and the output core 31 of the output optical fiber 3 are connected as a whole, so that the total power output by the complex input optical fiber 1 can be stably transmitted to the output optical fiber 3, thereby having The effect of high power output, and it is not easy to reduce the efficiency of optical fiber transmission due to the impact of the external environment, thereby achieving the effect of improving the overall effectiveness and service life.

(2) The combined tube body 2 can be used with different types of complex input optical fibers 1 to facilitate the application of different fiber optical systems, thereby achieving the purpose of enhancing the diversity of use and multi-use.

(3) The input core 11 of the complex input optical fiber 1 will not be structurally changed during the manufacturing process, so as not to cause or introduce any loss, thereby achieving the effect of high coupling efficiency, stability and reliability.

The above detailed description is for the description of a preferred feasible embodiment of the present invention, but this embodiment is not intended to limit the scope of the patent application of the present invention. Any other changes and modifications made without departing from the spirit of the art disclosed by the present invention Changes should be included in the scope of patents covered by the present invention.

In summary, when the optical fiber bundling structure of the present invention and its manufacturing method are used, in order to indeed achieve its efficacy and purpose, the present invention is an invention with excellent practicability, which is in accordance with the application requirements of the invention patent. After submitting the application, I hope that the review committee will grant the case as soon as possible to protect the inventor's hard invention. If there is any doubt in the review committee of the Jun Bureau, please send me a letter and give instructions. The inventor will try his best to cooperate and feel virtuous.

1‧‧‧ input fiber

10‧‧‧Combination end

11‧‧‧Input core

12‧‧‧Input cladding

13‧‧‧Coated layer

2‧‧‧Combined tube

3‧‧‧Output fiber

31‧‧‧Output core

32‧‧‧Output cladding

Claims (9)

An optical fiber bundling structure includes a plurality of input optical fibers, a bundling tube body and an output optical fiber, wherein: one side of the plurality of input optical fibers is respectively formed with a bundling end for docking with the output optical fiber, and each input fiber has a center at the center The input core is coated with an input cladding outside the input core, and the input cladding of the multiple input optical fibers is connected as a whole; the combining tube is sleeved and connected to the combining end of the multiple input optical fibers, A puncture space is formed inside the merging tube body for the merging end to pass through; the output fiber center is provided with an output core for forming a connection with the input core of a plurality of input optical fibers, and is enveloped on the output core Covered with output cladding. The optical fiber bundling structure as described in item 1 of the patent application scope, wherein the input optical fiber is a single-mode optical fiber, a multi-mode optical fiber, a double-shell fiber, a polarization maintaining fiber or a gain fiber. The optical fiber bundling structure as described in item 1 of the patent application scope, wherein the part of the input fiber outside the bundling end is provided with a coating layer covering the outside of the input cladding. The optical fiber bundling structure as described in item 1 of the patent application scope, wherein the bundling tube body is made of quartz and glass. A method for manufacturing an optical fiber bundling structure includes the following steps: (A) First, the bundling ends of a plurality of input optical fibers are arranged adjacent to each other and penetrated into a hollow penetration space of the bundling tube body; (B) The heating machine is used to heat the combining tube body at a heating temperature, so that the input cladding outside the multiple input optical fibers is melted with each other, and the periphery of the input cladding is also melted and combined with the inner wall of the combining tube body; (C) Cut the flattened multiple input optical fibers and the combined tube through the cutting machine; (D) After the cutting is completed, the output fiber can be heated by the heating machine to heat the temperature The output core and the input core of the multiple input optical fibers are welded to make them firmly combined into one. The manufacturing method of the optical fiber bundling structure as described in item 5 of the patent application scope, wherein in step (B), it can be used with the stretching machine at the same time, so as to use the stretching machine to integrate the plural input optical fibers which are welded together And the combined tube body is stretched to reduce the overall outer diameter of the multiple input optical fibers and the combined tube body and form a tapered portion, which further conforms to various output fiber sizes. The manufacturing method of the optical fiber bundling structure as described in item 5 of the patent application scope, wherein before the step (A), the following steps can be performed first: (A01) The bundling end of the plural input optical fibers is first removed from the input package The coating layer outside the layer. The manufacturing method of the optical fiber bundling structure as described in item 5 of the patent application scope, wherein the heating temperature in step (B) is evaluated and adjusted by using the light efficiency, when the range value of the light efficiency is between 0.5~0.05 Between dB, the heating machine stops heating. The manufacturing method of the optical fiber bundling structure as described in item 5 of the patent application scope, wherein the heating temperature in step (D) is evaluated and adjusted by using the light efficiency, when the range value of the light efficiency is between 1~0.1 Between dB, the heating machine stops heating.

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