CN110749957A - Input optical fiber and manufacturing method thereof, optical fiber combiner and manufacturing method thereof - Google Patents
Input optical fiber and manufacturing method thereof, optical fiber combiner and manufacturing method thereof Download PDFInfo
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- CN110749957A CN110749957A CN201910912668.6A CN201910912668A CN110749957A CN 110749957 A CN110749957 A CN 110749957A CN 201910912668 A CN201910912668 A CN 201910912668A CN 110749957 A CN110749957 A CN 110749957A
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- optical fiber
- diameter
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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
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2553—Splicing machines, e.g. optical fibre fusion splicer
-
- 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
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2558—Reinforcement of splice joint
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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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- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
The application discloses an input optical fiber and a manufacturing method thereof, an optical fiber combiner and a manufacturing method thereof, and relates to the technical field of optical fiber lasers. The manufacturing method of the input optical fiber comprises the steps of preparing a multi-hole sleeve which can be processed by a fusion tapering method; the multi-hole casing comprises a cylindrical body and a plurality of holes arranged in the cylindrical body, wherein the plurality of holes comprise a central hole positioned in the center and a plurality of holes forming annular distribution; a bundle of optical fibers are arranged in each pore passage in a penetrating manner; wherein the fiber diameter matches the bore diameter; and carrying out fusion tapering treatment on the multi-hole sleeve through which the optical fiber passes. This application utilizes porous way sleeve to fix a position optic fibre in the preparation overall process of input optical fibre, has avoided the position of optic fibre to remove for optic fibre arranges evenly, and then has reduced the loss of pump optical fiber output.
Description
Technical Field
The application relates to the technical field of fiber lasers, in particular to an input fiber and a manufacturing method thereof, and an optical fiber combiner and a manufacturing method thereof.
Background
The conventional process for manufacturing the optical fiber combiner is as follows:
1. the pumping optical fiber and the signal optical fiber are bundled together in a knotting mode, and then the hydrogen-oxygen flame heating tapering is carried out. In the process of optical fiber arrangement and knotting, the arrangement is easy to cause uneven arrangement, so that the output loss of the pump optical fiber is large after tapering and fusion splicing of the output fiber.
2. After the pump optical fiber and the signal optical fiber are arranged, the pump optical fiber and the signal optical fiber directly penetrate into a quartz glass tube with a round hole together, and then are tapered through oxyhydrogen flame or laser heating. When the optical fiber is not uniformly arranged, the output loss of the pump optical fiber is large after tapering and fusion splicing of the output optical fiber.
Disclosure of Invention
The technical problem to be solved by the present application is to provide an input optical fiber and a manufacturing method thereof, an optical fiber combiner and a manufacturing method thereof, and to reduce the loss of the output of a pump optical fiber.
In order to solve the technical problems, the technical scheme is as follows: a method of making an input optical fiber, comprising:
preparing a porous sleeve which can be treated by a fusion tapering method; the multi-hole casing comprises a cylindrical body and a plurality of holes arranged in the cylindrical body, wherein the plurality of holes comprise a central hole positioned in the center and a plurality of holes forming annular distribution;
a bundle of optical fibers are arranged in each pore passage in a penetrating manner; wherein the fiber diameter matches the bore diameter;
and carrying out fusion tapering treatment on the multi-hole sleeve through which the optical fiber passes.
In a further technical improvement, the preparation of the multi-channel sleeve capable of being processed by the fusion tapering method comprises the following steps:
preparing a quartz glass tube with 7 pore canals;
each of the tunnels is penetrated by a bundle of optical fibers, and the tunnel comprises:
a signal fiber is arranged in the central pore passage in a penetrating way, and a pumping multimode fiber is arranged in each of the rest pore passages in a penetrating way.
The improvement of the further technical scheme is that the diameter of the optical fiber is matched with the inner diameter of the pore passage, and the improvement comprises the following steps:
the diameter of the optical fiber is the same as the inner diameter of the pore passage.
The improvement of the further technical scheme is that the fusion tapering method treatment is carried out on the multi-hole sleeve through which the optical fiber passes, and comprises the following steps:
heating and tapering the multi-channel sleeve through which the optical fiber passes;
matching the diameter of the section to be tapered with the core diameter of the output optical fiber;
cut at the cone section.
In order to solve the technical problems, the technical scheme is as follows: a manufacturing method of an optical fiber combiner utilizes the input optical fiber manufactured by the manufacturing method.
The improvement of the further technical scheme is that the method comprises the following steps:
welding the input optical fiber and the output optical fiber; the diameter of the input optical fiber taper section is matched with the core diameter of the output optical fiber;
and (5) packaging.
The improvement of the further technical scheme is that the diameter of the input optical fiber taper area is matched with the core diameter of the output optical fiber, and the improvement comprises the following steps:
the diameter of the input optical fiber taper segment is the same as the core diameter of the output optical fiber.
The improvement of a further technical solution is that the package comprises:
and the cone section of the input optical fiber and the fusion joint of the input optical fiber and the output optical fiber are packaged by an aluminum shell.
In order to solve the technical problems, the technical scheme is as follows: an input optical fiber manufactured by the manufacturing method.
In order to solve the technical problems, the technical scheme is as follows: an input optical fiber of the optical fiber combiner is manufactured by the manufacturing method.
In order to solve the technical problems, the technical scheme is as follows: an optical fiber combiner is manufactured by the manufacturing method.
Adopt this application technical scheme, the beneficial effect who has does: in the prior art, when the optical fiber combiner is used, the output loss of the pump optical fiber is found to be large, and a large amount of experimental researches show that the optical fiber is slightly moved in the optical fiber arrangement and knotting process before the fused biconical taper treatment of the input optical fiber, so that the optical fiber is unevenly arranged, and the problem that the output loss of the pump optical fiber is large in the optical fiber combiner manufactured by using the input optical fiber is further caused; in the whole process of manufacturing the input optical fiber, the multi-channel sleeve is used for positioning the optical fiber, so that the position movement of the optical fiber is avoided, the optical fiber is uniformly distributed, and the input optical fiber comprising the multi-channel sleeve and the optical fiber combiner are finally manufactured; thereby reducing the loss of the output of the pump fiber.
Drawings
The present application will be described in further detail with reference to the following drawings and detailed description.
FIG. 1 is a flow chart illustrating the fabrication of input fibers for an optical combiner in some embodiments;
FIG. 2 is a schematic diagram of a multi-hole ferrule with optical fibers disposed therethrough according to some embodiments;
FIG. 3 is a view similar to FIG. 2, taken in cross-section A-A of FIG. 2;
FIG. 4 is a view similar to FIG. 2, taken in cross-section B-B of FIG. 2;
FIG. 5 is a view similar to FIG. 2 showing the structure of the multi-channel ferrule for fiber penetration after the fusion tapering process;
FIG. 6 is a view similar to FIG. 5, taken in cross-section C-C of FIG. 5;
FIG. 7 is a view similar to FIG. 6, taken in cross-section D-D of FIG. 6;
FIG. 8 is a flow chart of a fusion tapering process performed on a multi-channel ferrule through which an optical fiber is inserted in some embodiments;
FIG. 9 is a view similar to FIG. 5, showing the multi-channel ferrule with the optical fiber inserted therein of FIG. 5 after being processed by fusion tapering;
FIG. 10 is a flow chart illustrating fabrication of an optical combiner according to some embodiments;
fig. 11 is a schematic structural diagram of some embodiments after fusion splicing of the input optical fiber and the output optical fiber.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus or method steps consistent with certain aspects of the present application, as detailed in the following claims.
As shown in fig. 1, a method for manufacturing an input optical fiber of an optical fiber combiner according to an embodiment is disclosed, which includes the following steps:
step S11: preparing a porous sleeve which can be treated by a fusion tapering method; the multi-hole casing comprises a cylindrical body and a plurality of holes arranged in the cylindrical body, wherein the plurality of holes comprise a central hole positioned in the center and a plurality of holes forming annular distribution;
step S12: a bundle of optical fibers are arranged in each pore passage in a penetrating manner; wherein the fiber diameter matches the bore diameter;
step S13: and carrying out fusion tapering treatment on the multi-hole sleeve through which the optical fiber passes.
In this embodiment, the input fiber is an important component of the optical fiber combiner, and the quality of the input fiber affects the performance of the optical fiber combiner; in the prior art, when the optical fiber combiner is used, the loss of the output of the pump optical fiber is found to be large, and the applicant finds that the optical fiber has small position movement in the optical fiber arrangement and knotting process before the fused biconical taper treatment of the input optical fiber through a large amount of experimental researches, so that the optical fiber arrangement is uneven, and the problem that the output loss of the pump optical fiber is large in the optical fiber combiner manufactured by using the input optical fiber is further caused; therefore, the optical fiber is positioned by the aid of the multi-hole sleeve in the whole process of manufacturing the input optical fiber, the position of the optical fiber is prevented from moving, the optical fiber is uniformly distributed, and the output loss of the pump optical fiber is reduced.
In this embodiment, the number and the type of the optical fibers are determined according to the actual needs of the user, and the arrangement order is not limited to the arrangement order, and can be arranged according to the needs of the user; only in the whole process of manufacturing the input optical fiber by using the optical fiber, the optical fiber is limited by the multi-hole sleeve, and the position movement of the optical fiber, which influences the loss of the pump optical fiber, is avoided.
For example, a fiber combiner is manufactured by using 6 pump multimode fibers and 1 signal fiber and a sleeve with 7 circular holes, such as a quartz glass tube.
As shown in fig. 2, it discloses a multi-channel ferrule 2 through which an optical fiber 1 is inserted in step S12, wherein the pre-treatment of the optical fiber 1 can be performed according to the requirements of the conventional fusion-draw technique; as shown in fig. 3, which is similar to fig. 2, a cross-sectional view a-a in fig. 2; the visible optical fiber 1 adopts 6 pump multimode optical fibers and 1 signal optical fiber, the middle signal optical fiber is adopted, and 6 pump multimode optical fibers are uniformly distributed around the circumference of the signal optical fiber in an arrangement sequence; as shown in fig. 4, which is similar to fig. 2, a cross-sectional view B-B of fig. 2; it can be seen that the multi-hole casing 2 is provided with 7 circular holes; the arrangement order is identical to that of the optical fibers 1 in fig. 3; so that the optical fiber 1 is arranged in each hole of the multi-hole sleeve 2; the diameter of the optical fiber is matched with the inner diameter of the pore channel, for example, the diameter of the optical fiber is the same as the inner diameter of the pore channel.
As shown in fig. 5, which is similar to fig. 2, it discloses a structural diagram of the multi-channel sleeve 2 passing through the optical fiber 1 after the fused biconical taper process in step S13, and the fused biconical taper process can be performed according to the conventional fused biconical taper technology, such as heating the fused silica tube by oxyhydrogen flame and tapering to a size close to the core diameter of the output optical fiber. FIG. 6 is a view similar to FIG. 5, revealing a cross-section C-C of FIG. 5; FIG. 7 is a view similar to FIG. 6, but showing a cross-sectional view taken along line D-D of FIG. 6.
As shown in FIG. 8, a step of melt tapering a multi-channel ferrule through which an optical fiber is inserted is disclosed, which may include:
step S81: heating and tapering the multi-channel sleeve through which the optical fiber passes;
step S82: matching the diameter of the section to be tapered with the core diameter of the output optical fiber;
step S83: cut at the cone section.
As shown in fig. 9, which is similar to fig. 5, a schematic structural diagram of the multi-hole casing 2 with the optical fiber 1 passing through in fig. 5 after being processed by the fusion tapering method is disclosed, wherein the input optical fiber of the optical fiber combiner may include:
one end of the multi-hole casing 2 is a cone section, and the other end of the multi-hole casing is a cylinder section; the pore channel in the cone section is also cone-shaped, and the multi-pore channel sleeve 2 is a quartz glass tube with 7 pore channels; the pore canal is a central pore canal in the middle, and 6 pore canals are uniformly distributed on the circumference of the pore canal; and
the optical fiber 1 is inserted into each hole, has the same inner diameter as the hole in the taper section, and is fixed to the hole by fusion, and the end surface of the optical fiber is flush with the end surface of the taper section, for example, the optical fiber 1 may include a signal optical fiber inserted into the middle hole and pump multimode optical fibers inserted into the remaining holes.
For step S83, the cone section 3 of the glass tube may be cut with a large core diameter cutter.
Referring to fig. 10, a method for fabricating an optical fiber combiner using the input optical fiber fabricated in the above embodiments is disclosed, which includes the following steps:
step S101: welding the input optical fiber and the output optical fiber; the diameter of the input optical fiber taper section is matched with the core diameter of the output optical fiber;
step S102: and (5) packaging.
In this embodiment, the diameter of the taper segment of the input optical fiber in step S101 may be the same as the core diameter of the output optical fiber; the matching can be carried out according to the needs of the user; in addition, for welding, welding may be performed in a form of generating electricity by a welding machine.
In some embodiments, in step S102, the taper section 3 of the input optical fiber and the fusion point between the input optical fiber and the output optical fiber 4 may be packaged by an aluminum shell, and the package process may prevent dust pollution, and the complete optical fiber combiner is manufactured after the package process.
As shown in fig. 11, a schematic structural diagram of some embodiments of the input optical fiber and the output optical fiber after fusion splicing is disclosed. The optical fiber combiner comprises an input optical fiber, an output optical fiber 4 and a packaging structure; the end face of the cone section of the input optical fiber is welded with the output optical fiber 4; the diameter of the end face of the input optical fiber taper section 3 is the same as the core diameter of the output optical fiber; the packaging structure is an aluminum shell (not shown) for packaging the taper section 3 of the input optical fiber and the fusion point of the input optical fiber and the output optical fiber 4.
In summary, those skilled in the art can easily understand that the multi-channel sleeve is used to position the optical fiber in the whole process of manufacturing the input optical fiber, so that the position movement of the optical fiber is avoided, the optical fiber is uniformly arranged, and the output loss of the pump optical fiber is reduced. The optical fiber beam combiner manufactured by the process can bear pump laser with higher power, so that the optical fiber beam combiner can be applied to optical fiber lasers in kilowatt or kilowatt level.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.
Claims (10)
1. A method of making an input optical fiber, comprising:
preparing a porous sleeve which can be treated by a fusion tapering method; the multi-hole casing comprises a cylindrical body and a plurality of holes arranged in the cylindrical body, wherein the plurality of holes comprise a central hole positioned in the center and a plurality of holes forming annular distribution;
a bundle of optical fibers are arranged in each pore passage in a penetrating manner; wherein the fiber diameter matches the bore diameter;
and carrying out fusion tapering treatment on the multi-hole sleeve through which the optical fiber passes.
2. The method of manufacturing of claim 1, wherein said preparing a melt-tapered multi-channel sleeve comprises:
preparing a quartz glass tube with 7 pore canals;
each of the tunnels is penetrated by a bundle of optical fibers, and the tunnel comprises:
a signal fiber is arranged in the central pore passage in a penetrating way, and a pumping multimode fiber is arranged in each of the rest pore passages in a penetrating way.
3. The method of manufacturing according to claim 1 or 2, wherein the matching of the fiber diameter to the bore inner diameter comprises:
the diameter of the optical fiber is the same as the inner diameter of the pore passage.
4. The method of manufacturing according to claim 1 or 2, wherein the melt-tapering the porous ferrule through which the optical fiber is inserted comprises:
heating and tapering the multi-channel sleeve through which the optical fiber passes;
matching the diameter of the section to be tapered with the core diameter of the output optical fiber;
cut at the cone section.
5. A method of manufacturing an optical fibre combiner, characterised by using an input optical fibre manufactured by the method of any one of claims 1 to 4.
6. The method of manufacturing according to claim 5, comprising:
welding the input optical fiber and the output optical fiber; the diameter of the input optical fiber taper section is matched with the core diameter of the output optical fiber;
and (5) packaging.
7. The method of manufacturing of claim 6, wherein said input fiber taper diameter matching a core diameter of said output fiber comprises:
the diameter of the input optical fiber taper segment is the same as the core diameter of the output optical fiber.
8. The method of manufacturing according to claim 6, wherein the encapsulating comprises:
and the cone section of the input optical fiber and the fusion joint of the input optical fiber and the output optical fiber are packaged by an aluminum shell.
9. An input optical fiber produced by the production method according to any one of claims 1 to 4.
10. An optical fiber combiner manufactured by the manufacturing method of any one of claims 5 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910912668.6A CN110749957A (en) | 2019-09-25 | 2019-09-25 | Input optical fiber and manufacturing method thereof, optical fiber combiner and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910912668.6A CN110749957A (en) | 2019-09-25 | 2019-09-25 | Input optical fiber and manufacturing method thereof, optical fiber combiner and manufacturing method thereof |
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| CN110749957A true CN110749957A (en) | 2020-02-04 |
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| CN201910912668.6A Pending CN110749957A (en) | 2019-09-25 | 2019-09-25 | Input optical fiber and manufacturing method thereof, optical fiber combiner and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114690322A (en) * | 2022-04-06 | 2022-07-01 | 中红外激光研究院(江苏)有限公司 | Optical fiber combiner with different melting points of signal optical fiber and pump optical fiber and preparation method thereof |
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| CN109683240A (en) * | 2019-01-31 | 2019-04-26 | 江苏师范大学 | A kind of 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 |
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| US20060257083A1 (en) * | 2005-05-10 | 2006-11-16 | Rasmussen Michael H | Fiber bundles and methods of making fiber bundles |
| 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 |
| CN105633779A (en) * | 2016-03-28 | 2016-06-01 | 中国人民解放军国防科学技术大学 | Optical fiber end face pumping coupler for optical fiber amplifier and fabrication method of optical fiber end face pumping coupler |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114690322B (en) * | 2022-04-06 | 2023-04-25 | 中红外激光研究院(江苏)有限公司 | Optical fiber beam combiner with different melting points of signal optical fiber and pump optical fiber and preparation method thereof |
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