CN114265149A - Method for manufacturing beam combiner - Google Patents
Method for manufacturing beam combiner Download PDFInfo
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- CN114265149A CN114265149A CN202111578812.0A CN202111578812A CN114265149A CN 114265149 A CN114265149 A CN 114265149A CN 202111578812 A CN202111578812 A CN 202111578812A CN 114265149 A CN114265149 A CN 114265149A
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- optical fiber
- beam combiner
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- quartz tube
- raised
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims description 7
- 239000010453 quartz Substances 0.000 claims abstract description 30
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000013307 optical fiber Substances 0.000 claims abstract description 27
- 238000012681 fiber drawing Methods 0.000 claims abstract description 4
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 abstract description 12
- 238000010168 coupling process Methods 0.000 abstract description 12
- 238000005859 coupling reaction Methods 0.000 abstract description 12
- 238000005538 encapsulation Methods 0.000 abstract description 3
- 230000008054 signal transmission Effects 0.000 abstract description 2
- 238000005491 wire drawing Methods 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 description 8
- 238000005086 pumping Methods 0.000 description 4
- 238000005253 cladding Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920006240 drawn fiber Polymers 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The invention relates to the technical field of beam combiner manufacturing, in particular to a beam combiner manufacturing method, which comprises the following steps: firstly, preparing a small-sized prefabricated rod structure, taking N +1 raised hollow quartz tubes, wherein the wall of one central raised quartz tube is thicker, and the N surrounding hollow quartz tubes have the same specification; then preparing N small core rods with required specifications, and inserting the small core rods into N hollow quartz tubes with the same specifications; inserting 1 central germanium-doped core rod into a hollow quartz tube with a raised center, respectively fixing the small preform structure and the N +1 core rods on an optical fiber drawing tower, and drawing until the specified diameter specification set value of the output optical fiber is reached. The invention directly carries out wire drawing on the specially designed prefabricated rod, and the completed integrated beam combiner can improve the coupling efficiency and the bearing power of the pump, ensure the minimum loss transmission of signal light and even realize the non-encapsulation of the device.
Description
Technical Field
The invention relates to the technical field of beam combiner manufacturing, in particular to a beam combiner manufacturing method.
Background
The optical fiber combiner is one of core elements of an optical fiber laser, realizes the technology of coupling and outputting a plurality of pump light or signal light, and the performance parameters of the optical fiber combiner directly influence the output power and the beam quality of the optical fiber laser, thereby ensuring the lowest signal light loss while realizing high pump coupling efficiency, being the research direction of the optical fiber combiner and also being the basis and the premise for realizing high power output of the optical fiber laser.
At present, the mainstream optical fiber beam combiner mainly has two coupling modes, namely end face coupling and side face coupling; the end face coupling is to perform end face coupling fusion with a single optical fiber after a plurality of optical fibers are subjected to bundle tapering, and has the advantages that the high-efficiency coupling of pump light can be ensured, and the defect is inevitable signal light loss; the side coupling is to couple the pump light into the cladding of the signal fiber from the side by a plurality of pump fibers, and the waveguide structure of the signal fiber is not damaged, so that the minimum signal light loss is ensured. How to simultaneously ensure efficient transmission of pump light and signal light is a development direction of beam combiner technology, and therefore, a beam combiner manufacturing method is provided.
Disclosure of Invention
Based on the technical problems in the prior art, the invention provides a beam combiner manufacturing method, which is different from the traditional manufacturing method based on optical fiber processing, and the method directly performs wire drawing on a specially designed prefabricated rod, so that the completed integrated beam combiner can improve the pump coupling efficiency and the bearing power, can ensure the minimum loss transmission of signal light, and can even realize the non-encapsulation of the device.
The invention provides the following technical scheme: a beam combiner manufacturing method comprises the following steps: firstly, preparing a small-sized prefabricated rod structure, taking N +1 raised hollow quartz tubes, wherein the wall of one central raised quartz tube is thicker, and the N surrounding hollow quartz tubes have the same specification;
then preparing N small core rods with required specifications, and inserting the small core rods into N hollow quartz tubes with the same specifications; inserting 1 central germanium-doped core rod into a hollow quartz tube with a raised center, respectively fixing the small preform structure and the N +1 core rods on an optical fiber drawing tower, and drawing until the specified diameter specification set value of the output optical fiber is reached.
Preferably, the outer diameter of one quartz tube wall of the central bulge is 2 times of the outer diameter of the surrounding quartz tube, and the inner diameter of the quartz tube wall of the central bulge is one tenth of the outer diameter of the surrounding quartz tube.
Preferably, the front end is drawn to a specified diameter specification of the output fiber and the drawn fiber is coated normally.
The invention provides a method for manufacturing a beam combiner, which directly heats and draws a prefabricated rod and a core rod, wherein the manufactured device is integrated, a welding point does not exist, welding loss does not exist, the loss factor of the device is solved fundamentally, and the insertion loss index of the device is improved. The pumping fiber and the signal fiber are integrated with the output, so that theoretically the beam combiner can bear higher pumping power and realize pumping efficiency of more than 99%.
Drawings
FIG. 1 is a schematic view of a preform according to the present invention;
fig. 2 is a schematic structural diagram of the beam combiner of the present invention.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
The invention provides a technical scheme that: a beam combiner manufacturing method comprises the following steps:
firstly, preparing a mini prefabricated rod structure shown in figure 1, wherein the mini prefabricated rod structure is made of pure quartz materials with uniform refractive indexes, N +1 raised hollow quartz tubes are adopted, the wall of the central raised quartz tube is thicker, the outer diameter is about 2 times of the outer diameter of the surrounding quartz tubes, and the inner diameter is about one tenth of the outer diameter of the surrounding quartz tubes; the surrounding N hollow quartz tubes are of the same specification.
Then preparing N small core rods with required specifications and 1 central germanium-doped core rod, inserting the core rods into the small preform rods, respectively fixing the preform rods and the N +1 core rods on an optical fiber drawing tower, starting drawing, drawing at a higher temperature in the initial stage of drawing, and drawing the front end to the specified diameter specification of the output optical fiber, such as a cladding 400, at this moment, the fiber core 20; the drawn optical fiber is normally coated, after the drawn optical fiber is drawn to a fixed number of meters, the temperature of a heating furnace is gradually reduced along with the approaching of a stepped section in the drawing table 1, the drawing speed is reduced, the temperature and the drawing speed are reduced, the diameter of the optical fiber is favorably controlled, the temperature reduction is stopped when the temperature is reduced to a specified value, at the moment, the outer diameter of the optical fiber is 1.65 times (or other times, formulated according to requirements) of the initial diameter, and the diameter transition area is in a uniform and smooth conical shape; the coating step is also completed.
As shown in fig. 2, in the rear end heating process, there is a gap between N +1 quartz tubes, so that after the coating layer is stripped from the whole coated optical fiber, the bare fiber is in a separated state and can be directly welded with the front end pumping pigtail, and similarly, the signal optical fiber can also be directly welded and coupled with the front end or the rear end optical fiber. The beam combiner without encapsulation can be used in both forward and reverse directions, the pump coupling efficiency is more than or equal to 99%, and the signal light insertion loss is less than or equal to 0.1 dB.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (3)
1. A beam combiner manufacturing method is characterized by comprising the following steps: the method comprises the following steps: firstly, preparing a small-sized prefabricated rod structure, taking N +1 raised hollow quartz tubes, wherein the wall of one central raised quartz tube is thicker, and the N surrounding hollow quartz tubes have the same specification;
then preparing N small core rods with required specifications, and inserting the small core rods into N hollow quartz tubes with the same specifications; inserting 1 central germanium-doped core rod into a hollow quartz tube with a raised center, respectively fixing the small preform structure and the N +1 core rods on an optical fiber drawing tower, and drawing until the specified diameter specification set value of the output optical fiber is reached.
2. The method for manufacturing a beam combiner according to claim 1, wherein: the outer diameter of one quartz tube wall of the central bulge is 2 times of the outer diameter of the surrounding quartz tube, and the inner diameter of the quartz tube wall of the central bulge is one tenth of the outer diameter of the surrounding quartz tube.
3. The method for manufacturing a beam combiner according to claim 1, wherein: and drawing the front end to the specified diameter specification of the output optical fiber, and normally coating the drawn optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111578812.0A CN114265149A (en) | 2021-12-22 | 2021-12-22 | Method for manufacturing beam combiner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111578812.0A CN114265149A (en) | 2021-12-22 | 2021-12-22 | Method for manufacturing beam combiner |
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| CN114265149A true CN114265149A (en) | 2022-04-01 |
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| CN202111578812.0A Pending CN114265149A (en) | 2021-12-22 | 2021-12-22 | Method for manufacturing beam combiner |
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Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60260441A (en) * | 1984-06-05 | 1985-12-23 | Hitachi Cable Ltd | Device for preparing optical fiber |
| JPS62283842A (en) * | 1986-06-03 | 1987-12-09 | Hitachi Cable Ltd | Production of low-loss single mode optical fiber |
| CN101038353A (en) * | 2006-12-29 | 2007-09-19 | 北京交通大学 | High power cladding pumping mono-mode output multi-core fiber and preparing method therefor |
| CN101328013A (en) * | 2007-06-22 | 2008-12-24 | 江苏亨通光纤科技有限公司 | Method for drawing optical fibre by using large size optical fibre prefabricated bar |
| CN102354019A (en) * | 2011-11-11 | 2012-02-15 | 烽火通信科技股份有限公司 | Bent non-sensitive micro-structured optical fiber and production method thereof |
| CN102436036A (en) * | 2011-12-16 | 2012-05-02 | 烽火通信科技股份有限公司 | Optical fiber beam combiner and manufacturing method thereof |
| CN103030271A (en) * | 2012-12-19 | 2013-04-10 | 江苏亨通光电股份有限公司 | Method and device for producing low polarization mode dispersion optical fiber |
| CN103336333A (en) * | 2013-05-31 | 2013-10-02 | 江苏天元激光科技有限公司 | Pump fiber combiner manufacturing method for large power fiber laser |
| CN103472535A (en) * | 2013-09-10 | 2013-12-25 | 西安正圆激光科技有限公司 | Manufacturing method of fiber laser combiner |
| CN103936277A (en) * | 2014-03-20 | 2014-07-23 | 富通集团有限公司 | Multi-core optical fiber manufacturing method |
| JP2015022133A (en) * | 2013-07-18 | 2015-02-02 | 株式会社フジクラ | Manufacturing method for optical fiber combiner, optical fiber combiner, and laser apparatus |
| CN105891951A (en) * | 2014-09-30 | 2016-08-24 | 中国兵器装备研究院 | Modularized manufacturing method of multi-core beam combiner |
| WO2018207872A1 (en) * | 2017-05-11 | 2018-11-15 | 株式会社フジクラ | Combiner, fiber laser device, and method for manufacturing combiner |
| CN109239847A (en) * | 2018-09-29 | 2019-01-18 | 武汉锐科光纤激光技术股份有限公司 | Optical-fiber bundling device and preparation method thereof |
| CN208953728U (en) * | 2018-09-29 | 2019-06-07 | 武汉锐科光纤激光技术股份有限公司 | Optical-fiber bundling device |
| CN110981181A (en) * | 2019-12-19 | 2020-04-10 | 华中科技大学 | Preparation and wire drawing method of heterogeneous glass material optical fiber preform |
| CN113087385A (en) * | 2021-03-01 | 2021-07-09 | 中国科学院西安光学精密机械研究所 | Mid-infrared optical fiber pumping beam combiner and preparation method thereof |
-
2021
- 2021-12-22 CN CN202111578812.0A patent/CN114265149A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60260441A (en) * | 1984-06-05 | 1985-12-23 | Hitachi Cable Ltd | Device for preparing optical fiber |
| JPS62283842A (en) * | 1986-06-03 | 1987-12-09 | Hitachi Cable Ltd | Production of low-loss single mode optical fiber |
| CN101038353A (en) * | 2006-12-29 | 2007-09-19 | 北京交通大学 | High power cladding pumping mono-mode output multi-core fiber and preparing method therefor |
| CN101328013A (en) * | 2007-06-22 | 2008-12-24 | 江苏亨通光纤科技有限公司 | Method for drawing optical fibre by using large size optical fibre prefabricated bar |
| CN102354019A (en) * | 2011-11-11 | 2012-02-15 | 烽火通信科技股份有限公司 | Bent non-sensitive micro-structured optical fiber and production method thereof |
| CN102436036A (en) * | 2011-12-16 | 2012-05-02 | 烽火通信科技股份有限公司 | Optical fiber beam combiner and manufacturing method thereof |
| CN103030271A (en) * | 2012-12-19 | 2013-04-10 | 江苏亨通光电股份有限公司 | Method and device for producing low polarization mode dispersion optical fiber |
| CN103336333A (en) * | 2013-05-31 | 2013-10-02 | 江苏天元激光科技有限公司 | Pump fiber combiner manufacturing method for large power fiber laser |
| JP2015022133A (en) * | 2013-07-18 | 2015-02-02 | 株式会社フジクラ | Manufacturing method for optical fiber combiner, optical fiber combiner, and laser apparatus |
| CN103472535A (en) * | 2013-09-10 | 2013-12-25 | 西安正圆激光科技有限公司 | Manufacturing method of fiber laser combiner |
| CN103936277A (en) * | 2014-03-20 | 2014-07-23 | 富通集团有限公司 | Multi-core optical fiber manufacturing method |
| CN105891951A (en) * | 2014-09-30 | 2016-08-24 | 中国兵器装备研究院 | Modularized manufacturing method of multi-core beam combiner |
| WO2018207872A1 (en) * | 2017-05-11 | 2018-11-15 | 株式会社フジクラ | Combiner, fiber laser device, and method for manufacturing combiner |
| CN109239847A (en) * | 2018-09-29 | 2019-01-18 | 武汉锐科光纤激光技术股份有限公司 | Optical-fiber bundling device and preparation method thereof |
| CN208953728U (en) * | 2018-09-29 | 2019-06-07 | 武汉锐科光纤激光技术股份有限公司 | Optical-fiber bundling device |
| CN110981181A (en) * | 2019-12-19 | 2020-04-10 | 华中科技大学 | Preparation and wire drawing method of heterogeneous glass material optical fiber preform |
| CN113087385A (en) * | 2021-03-01 | 2021-07-09 | 中国科学院西安光学精密机械研究所 | Mid-infrared optical fiber pumping beam combiner and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 田国周 等: "光纤合束器的制作工艺及其应用", 光纤与电缆及其应用技术, no. 4, 31 December 2009 (2009-12-31), pages 27 - 31 * |
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