TWI662305B - Optical fiber bundling structure and manufacturing method thereof - Google Patents

Abstract

The invention relates to an optical fiber bundling structure and a manufacturing method thereof, in particular, after the bundling end of a plurality of input optical fibers is put in a bundling tube body, the input optical fiber and the bundling tube body can be fused to each other through a fusion operation. After the input fiber and the bundled tube body are fused with each other, they can be fused to the output fiber to connect the input core of the multiple input fiber and the output core of the output fiber as a whole, so that the multiple input fiber The total output power can be stably transmitted to the output fiber for use, which has the effect of high power output, and it is not easy to reduce the efficiency of fiber transmission due to external environmental influences, thereby achieving the purpose of improving overall efficiency and service life.

Description

Optical fiber bundling structure and manufacturing method thereof

The present invention provides an optical fiber bundling structure and a manufacturing method thereof, in particular, a plurality of input optical fibers passing through a body of a combining tube can be fused to an output optical fiber through thermal fusion, so that the total power output from 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 external environment.

According to the advent of the high-tech era, the processing technology of industrial manufacturing has also continued to improve. Traditional mechanical processing processes can only be performed on the appearance of processed objects, but they cannot be processed, processed, carved or cut. Completed, in addition, such as high-tech semiconductor products such as wafers, components, thin plate drilling, cutting, etc., can not be related to processing; therefore, the laser processing process has been developed and introduced, the process is widely used, such as medical, high-tech In the fields of precision industry, excitation detection, spectroscopic analysis, or plasma dynamics, processing can be performed through laser. Traditional laser processing can not avoid mechanical clamping of lenses, high-precision translation stages, etc., but through optical laser For pulsed laser processing, fiber lasers have the advantages of compact structure, high efficiency, and high-quality laser beams. Therefore, fiber lasers are widely used in material processing processes. Shooting has very good stability, small size, easy to carry and easy to set up, etc. So that the application of optical communication, optical measurement and the spectral analysis of a place, and because of the very high because of having good collimation properties, high Power and high light intensity also make laser source processing systems widely used in industry.

Furthermore, because of its high-power optical fiber laser devices, especially thousands of tens of thousands of watts of optical fiber laser devices, it has a wide range of applications in the industry, so under the rapid development of high-power laser systems, there are manufacturers It has been researched that complex input fiber with high energy is introduced into the output fiber to achieve high power laser output. The general method of introducing high energy beam is to use complex input fiber to guide light with free space, and then the lens is collected at the output. In optical fiber, however, its free space transmission is easily affected by factors such as environmental humidity and cleanliness, resulting in poor service life and optical characteristics.

Therefore, how to solve the above-mentioned shortcomings and inconveniences is the direction that the relevant industry players in this industry are eager to study and improve.

Therefore, in view of the above-mentioned shortcomings, the inventors collected relevant materials, and after multiple evaluations and considerations, the inventors began to design this type of optical fiber bundle structure and its manufacturing method.

The main purpose of the present invention is that the plurality of input optical fibers can pass through the body of the combining tube, and are fused to each other through hot-melt operation. After the plurality of input fibers and the combining tube body are fused to each other, they can be fused again. The output fiber connects the input core of the multiple input fiber and the output core of the output fiber as a whole, so that the total power output from the multiple input fiber can be stably transmitted to the output fiber, thereby having a high power output effect 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 overall effectiveness and service life.

The secondary purpose of the present invention is that the bundled tube body can be used with different types of multiple input optical fibers, thereby facilitating the application of different optical fiber optical systems, thereby achieving the purpose of improving the diversity and versatility in use.

Another object of the present invention is that during the manufacturing process, the input core of the multiple input fiber will not have structural changes, that is, no loss will be generated or introduced, and the purposes of high coupling efficiency, stability and reliability will be achieved.

1‧‧‧ input fiber

10‧‧‧ Beam End

11‧‧‧input core

12‧‧‧ input cladding

13‧‧‧ Coating

2‧‧‧ beam 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 another embodiment of the present invention.

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

In order to achieve the above-mentioned objects and effects, the technical means and structure adopted by the present invention, the following is a detailed description of the features and functions of the preferred embodiment of the present invention.

Please refer to the first and second figures, which are a side sectional view and a front sectional view of the present invention. It can be clearly seen from the figure that the optical fiber bundling structure of the present invention includes a plurality of input optical fibers 1 and a combining tube. The body 2 and the output optical fiber 3, wherein: one side of the plurality of input optical fibers 1 is formed with a combining end 10 for docking with the output optical fiber 3, and an input wire core 11 is provided at the center of each input optical fiber 1, The core 11 is covered with an input cladding 12, and each input optical fiber 1 is provided with a coating layer 13 covering the outside of the input cladding 12 at a position other than the combining end 10.

The combining tube body 2 is sleeved on the combining end 10 of the plurality of input optical fibers 1 and is made of silicon-related materials such as quartz and glass. A hollow penetrating space 20 is formed inside the combining tube body 2. The inside of the penetrating space 20 is provided with a combining end 10 of a plurality of input optical fibers 1.

At the center of the output optical fiber 3 is an output core 31 for connecting with the input core 11 of the multiple input optical fiber 1, and the output core 31 is covered with an output cladding 32.

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

Please refer to the third, fourth, fifth, and sixth figures, which are a flowchart of the present invention, a side sectional view of another embodiment, a flowchart of another embodiment, and a sectional view of another embodiment before, 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 combining ends 10 of the plurality of input optical fibers 1 are arranged next to each other and penetrate into the hollow insertion space 20 of the combining tube body 2.

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

(C) Cut and flatten the plurality of input optical fibers 1 and the bundled tube body 2 through the cutting machine.

(D) After the cutting is completed, the heating machine can be used to heat the temperature. Then, the output core 31 of the output optical fiber 3 and the input core 11 of the multiple input optical fiber 1 are welded to form a stable combination, thereby completing the manufacturing process of the present invention.

In the above step (B), it can be used with a drawing machine at the same time, and the drawing operation is performed on the plurality of input optical fibers 1 and the combining tube 2 through the drawing machine, so that the plurality of input optical fibers 1 and the The overall outer diameter of the bundle tube body 2 is reduced and a tapered portion 21 is formed to further conform to the output fibers 3 of various sizes.

Furthermore, the heating machine in the above steps (B) and (D) may be a device having a uniform heating function such as a discharge heating machine or a furnace heating machine, and the steps (B) and (D) The heating temperature must be set according to the parameters such as the light-passing efficiency, type, and size of the optical fiber. The test method for the light-passing efficiency is to use an external laser source device (not shown in the figure) to input a fixed power from a plurality of input optical fibers 1. And measure the parameter value of the light efficiency through the external detection device (not shown in the figure) at the cone portion 21 or the output fiber 3 of the combining tube body 2. When the light efficiency is measured in step (B) The range value of 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 range of measured light efficiency in step (D) is between 1 Between ~ 0.1dB, when the average value is about 0.5dB, the heating machine can stop the heating operation, so that the light efficiency can be used to evaluate and adjust the heating temperature. When the heating operation is performed in this step (B), The heating machine must heat the bundle tube 2 in a uniform manner to avoid loosening of the structure of the plurality of input optical fibers 1. Or deformation, in order to achieve the effect of improving the light efficiency; In addition, the drawing machine is a conventional technology, so the drawing is not shown, and there are many devices and components inside the drawing machine, which is not the invention of this case The key points are not repeated here for the purpose of understanding.

However, in the above steps (B), (C), (D), the heating machine and The cutting machine is a conventional technology, so the drawings are not shown, and there are many devices and components inside the heating machine and the cutting machine, which are not the focus of the invention of the present case, so I will not repeat them for the sake of understanding.

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 a coating layer 13 that can be removed outside the input cladding 12 first.

In the above step (A01), it is preferable to use an etching solution, but in practical application, the coating layer 13 of the input optical fiber 1 can also be removed by means of mechanical polishing. There are many ways. For example, simple modifications and equivalent property changes made by using the description and drawings of the present invention should be included in the patent scope of the present invention and be shared by Chen Ming.

In order to have a clearer understanding of the manufacturing method of the present invention, the following two usage modes are used for illustration: When the multiple input optical fiber 1 is used in the first mode, it can be seven multi-mode bundles of the same type. 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 and coating of the input fiber 1 The cladding layers 13 are 1 μm and 19 μm, respectively. The combining end portion 10 of the plurality of input optical fibers 1 is that the coating layer 13 can be removed by using an etching solution, and seven input optical fibers 1 are passed through the tube in a bundle shape as Inside the penetration space 20 of the 1000 μm bundled tube body 2, and then heating the bundled tube body 2 so that the input claddings 12 of the seven input optical fibers 1 are fused and then fused to each other as a whole, and The outer periphery of the input cladding 12 will be fused and integrated with the inner wall surface of the combining tube body 2, and during the hot melting process, in order to cooperate with the stretching machine to perform the stretching operation on the combining tube body 2 so that Multiple input fiber 1 and The combining tube body 2 is tapered and the outer diameter of the stretched part is reduced to 400 μm. After the input fiber 1 and the combining tube body 2 are cooled, the plurality of input fibers 1 and the combining fiber can be cut by a cutting machine. The bundle tube 2 is cut and flattened so that the end faces of the complex input fiber 1 and the bundled bundle body 2 are flat, and then the complex input fiber 1 and the output fiber 3 with a diameter of 400 μm are subjected to thermal fusion processing to enable complex input. The input core 11 of the optical fiber 1 and the output core 31 of the output optical fiber 3 are fusion-connected into one body, thereby achieving the purpose of stably combining the seven input fibers 11 of the input optical fiber 1 with the output core 31 of the output optical fiber 3, and making the seven The total power output from the input optical fiber 1 can be stably transmitted to the output optical fiber 3 for use, thereby having the effect of high power output, and it is not easy to reduce the efficiency of optical fiber transmission due to external environmental influences, so as to improve the overall utility and service life.

However, when the multiple input fiber 1 is used in the second mode, it can be a single-mode fiber and six multi-mode fibers (as shown in the sixth figure) surrounding the single-mode fiber. The diameter of the single-mode fiber It is 125 μm, and the diameter of the input core 11 of the input fiber 1 (single-mode fiber) is 10 μm, and the input cladding 12 and coating 13 of the single-mode fiber are 96 μm and 19 μm, respectively. In addition, the input fiber 1 (multiple Mode fiber) with a diameter of 125 μm, and the diameter of the input core 11 of the multi-mode fiber is 105 μm, while the input cladding 12 and coating 13 of the multi-mode fiber are 1 μm and 19 μm, respectively. After the coating layer 13 is removed from the optical fiber and the six multimode optical fibers by using an etching solution, the optical fiber and the six multimode optical fibers are placed inside the penetration space 20 of the combining tube body 2 and are implemented according to the foregoing steps of hot melting, stretching, flattening, and hot melting. The plurality of input optical fibers 1 are combined with the output optical fibers 3 so as to be used with different types of optical fibers, thereby facilitating the application of different optical fiber optical systems.

The above-mentioned multiple input optical fibers 1 and the bundled tube body 2 are stretched to the same diameter as the output optical fiber 3 through a stretching machine, but in actual application, they need only be stretched to the same phase. It is close to the diameter of the output optical fiber 3, and the input core 11 of the multiple input optical fiber 1 and the output core 31 of the output optical fiber 3 may be connected to form a stable combination.

In addition, the arrangement and quantity of the plurality of input optical fibers 1 can be increased or decreased according to the requirements of the visible output power and the requirements of the optical fiber output system.

The invention has the following advantages:

(1) The plurality of input optical fibers 1 are threaded in the combining tube body 2 and are welded to each other through hot-melt operation. After the plurality of input optical fibers 1 and the combining tube body 2 are fused to each other, they can be spliced again. In the output optical fiber 3, the input core 11 of the multiple 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 from the multiple 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 influence of the external environment, thereby achieving the effect of improving the overall effectiveness and service life.

(2) The combining tube body 2 can be used in combination with different types of multiple input optical fibers 1, thereby facilitating the application of different optical fiber optical systems, thereby achieving the purpose of improving the diversity and multi-purpose in use.

(3) During the manufacturing process, the input core 11 of the plurality of input optical fibers 1 will not be structurally changed so as not to generate or introduce any loss, thereby achieving high coupling efficiency, stability and reliability.

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

In summary, the optical fiber bundling structure of the present invention and the manufacturing method of the present invention are sure to achieve its efficacy and purpose when in use. Therefore, the present invention is an invention with excellent practicality. In order to meet the application requirements of the invention patent, Submit an application, and hope that the trial committee will grant this case at an early date to protect the inventor's hard invention. If the jury of the Bureau of the Bureau has any suspicions, please follow the letter instructions, and the inventor will cooperate with all efforts and be honest.

Claims (7)

An optical fiber bundling structure includes a plurality of input optical fibers, a combining tube body, and an output optical fiber, wherein one side of the plurality of input optical fibers is formed with a combining end for docking with an output optical fiber, and the center of each input optical fiber has The input core is covered with an input cladding outside the input core, and the input cladding of the plurality of input optical fibers is connected as a whole; the combining tube body is sleeved and connected to the combining end of the plurality of input optical fibers. An insertion space is formed inside the combining tube body for the combining end to pass through, and a heating machine is used to heat the combining tube body at a heating temperature to make the input outside the input optical fibers. The cladding is fused to each other, and the periphery of the input cladding is also fused to the inner wall of the bundled tube. The heating temperature is evaluated and adjusted using a light efficiency. When the light efficiency is in the range of 0.5 ~ When the temperature is between 0.05dB, the heating machine stops heating; the center of the output fiber is an output core for connecting with the input core of a plurality of input fibers, and the output core is covered with an output cladding. By The heating machine uses the heating temperature to fuse the output core of the output fiber and the input core of the input fibers so that they are firmly combined into one. The heating temperature is evaluated and adjusted by using the light efficiency. When the range of the light passing efficiency is between 1 and 0.1 dB, the heating machine stops heating. The fiber bundling structure according to item 1 of the patent application scope, wherein the input fiber is a single-mode fiber, a multi-mode fiber, a double-fiber shell fiber, a polarization maintaining fiber, or a gain fiber. The optical fiber bundling structure according to item 1 of the scope of the patent application, wherein the input optical fiber is provided at a position other than the bundling end with a coating layer covering the outside of the input cladding. The optical fiber bundling structure according to item 1 of the scope of the patent application, 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 arranging a plurality of input optical fiber bundling ends adjacently and penetrating into a hollow penetrating space of the bundling tube body; (B) The heating machine is used to heat the combining tube body at the heating temperature, so that the input cladding outside the plurality of input optical fibers is fused to each other, and the periphery of the input cladding and the inner wall of the combining tube are fused and combined with each other. The heating temperature In order to use a passing light efficiency to evaluate and adjust, when the range of the passing light efficiency is between 0.5 ~ 0.05dB, the heating machine stops heating; (C) the cutting machine is used to pass the welding The plurality of input fibers and the bundled tube body are cut and flattened; (D) After the cutting is completed, the output core of the output fiber and the input core of the plurality of input fibers can be processed by a heating machine to heat the temperature. Welding makes it firmly combined into one body. The heating temperature is evaluated and adjusted by using the light efficiency. When the range value of the light efficiency is between 1 ~ 0.1dB, the heating machine stops heating. The method for manufacturing an optical fiber bundling structure as described in item 5 of the scope of the patent application, wherein in step (B), a plurality of input optical fibers that can be used in conjunction with a drawing machine to weld and fuse together through the drawing machine are integrated. And the bundled tube body is stretched to reduce the outer diameter of the plurality of input optical fibers and the combined bundled tube body to form a tapered portion, thereby meeting various output fiber sizes. According to the manufacturing method of the optical fiber bundling structure described in item 5 of the scope of the patent application, before the step (A), the following steps can be performed first: (A01) The bundling end of the plurality of input optical fibers is first removed from the input packet. Coating on the outside of the layer.