CN217467245U - High-power pumping optical fiber combiner - Google Patents
High-power pumping optical fiber combiner Download PDFInfo
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- CN217467245U CN217467245U CN202221241137.2U CN202221241137U CN217467245U CN 217467245 U CN217467245 U CN 217467245U CN 202221241137 U CN202221241137 U CN 202221241137U CN 217467245 U CN217467245 U CN 217467245U
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Abstract
The utility model aims at providing a high power pumping optical fiber beam combiner that light beam quality is high, need not carry out input/output optical fiber core counterpoint and make the degree of difficulty low. The utility model discloses an input/output signal optic fibre (1) and many pump optic fibre (2), it has ring grooving (3) to set up on input/output signal optic fibre (1), ring grooving (3) will input/output signal optic fibre (1) is separated for input section (11) and output section (12), the cladding corrosion optical fiber section (13) of input/output signal optic fibre (1) link up input section (11) reach output section (12), many the output terminal surface of pump optic fibre (2) all with the input end surface of output section (12) meets. The utility model discloses can be applied to the technical field of optic fibre beam combiner.
Description
Technical Field
The utility model relates to a technical field of optical fiber combiner, in particular to high power pumping optical fiber combiner.
Background
The optical fiber combiner is a device for improving the power of an optical fiber laser, and mainly comprises three parts: input optical fiber, fused taper fiber bundle and output optical fiber. When the beam combiner is manufactured, bundle tapering of the fused-cone optical fiber bundle is a more critical step.
The manufacturing method of the fused-cone optical fiber bundle mainly comprises a twisting method and a sleeving method at present. The twisting method is that after input optical fiber bundle is assembled, the optical fibers in the input optical fiber bundle are tightly attached together through twisting, then heating and tapering are carried out to obtain fused-cone optical fiber bundle, and then the fused-cone optical fiber bundle is cut and fused with output optical fibers; the sleeve method is characterized in that in the process of inputting an optical fiber group bundle, an input optical fiber is inserted into a glass tube, then the glass tube and the optical fiber bundle in the glass tube are drawn to be tapered together to obtain a fused-cone optical fiber bundle, and then the fused-cone optical fiber bundle is cut and is welded with an output optical fiber.
However, in both the torsion method and the sleeve method, the input optical fiber needs to be tapered during manufacturing, so that the diameter of the optical fiber is reduced, the divergence angle is increased, signal light loss is caused, and the quality of a light spot is greatly influenced; and during fusion welding, the input optical fiber/fused cone optical fiber bundle and the output optical fiber need to be ensured to be accurately aligned, and the quality of the light beam can be influenced by a little slight deviation during alignment, so that the manufacturing difficulty is increased, and the requirements on the precision of a preparation instrument, the quality of an operator and the like are higher. In addition, loss of the optical fiber during fusion splicing is also inevitable.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome prior art not enough, provide a light beam high quality, need not carry out input/output optic fibre core counterpoint and make the low high power pumping optic fibre beam combiner of the degree of difficulty.
The utility model adopts the technical proposal that: the utility model discloses an input/output signal optic fibre and many pump optic fibre, it has the ring grooving to set up on the input/output signal optic fibre, the ring grooving will the input/output signal optic fibre is separated for input section and output section, the cladding corrosion optical fiber section of input/output signal optic fibre link up the input section reaches output section, many the output end face of pump optic fibre all with the input end face of output section meets.
Further, the input end face of the output section is a plane which is axially perpendicular to the input and output signal optical fibers, the output end face of the pump optical fiber is a plane which is axially perpendicular to the input and output signal optical fibers, the pump optical fiber is attached to the output section and then axially parallel to the output section, and the pump optical fiber is overlapped and welded with the input end face of the output section through the output end face.
Further, the input end face of the output section is an inclined face, the output end face of the pumping optical fiber is an inclined face, the pumping optical fiber is axially parallel to the output section after being attached, and the pumping optical fiber is attached and welded with the input end face of the output section through the output end face.
Further, the input end face of the output section is a circular truncated cone inclined face, the output end face of the pump optical fiber is an arc inclined face, the pump optical fiber is axially parallel to the output section after being attached, and the pump optical fiber is attached and welded to the input end face of the output section through the output end face.
Further, a plurality of the pumping fibers are arranged around the cladding corrosion fiber section as the center.
Further, the number of the pump fibers is matched with the ring-cutting grooves.
Furthermore, a plurality of the pump fibers are correspondingly arranged on one annular cutting groove.
The utility model has the advantages that: the utility model provides a high power pumping optical fiber beam combiner compares with traditional optical fiber beam combiner, the cladding of input and output signal optic fibre corrodes the optic fibre section as an organic whole all the time, signal fibre core is not influenced promptly, at the welded in-process, the signal fibre core of input and output signal optic fibre only receives the influence of heating, it is little to the loss of signal fibre core, can also avoid tapering to cause the influence to signal fibre core, can effectively guarantee the light beam quality, and need not counterpoint and match signal fibre core size when the butt fusion, it is low to make the degree of difficulty.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
fig. 2 is a schematic perspective view of a first embodiment of the present invention;
fig. 3 is a schematic plan view of a first embodiment of the present invention;
fig. 4 is a schematic perspective view of a second embodiment of the present invention;
fig. 5 is a schematic plan view of a second embodiment of the present invention;
fig. 6 is a schematic perspective view of a third embodiment of the present invention;
fig. 7 is a schematic plan view of a third embodiment of the present invention;
FIG. 8 is a schematic diagram of the present invention employing six pump fibers for fusion splicing one by one;
FIG. 9 is a schematic diagram of the present invention using six pump fibers to perform a set of two fusion splices;
FIG. 10 is a schematic diagram of the present invention using six pump fibers to perform a set of three fusion splices;
fig. 11 is a block diagram of the preparation process of the present invention.
Detailed Description
The first embodiment is as follows:
as shown in fig. 1, fig. 2 and fig. 3, in this embodiment, the utility model discloses an input/output signal optical fiber 1 and many pump optical fibers 2, set up on the input/output signal optical fiber 1 and have a ring grooving 3, ring grooving 3 will input/output signal optical fiber 1 separates for input section 11 and output section 12, the cladding corrosion optical fiber section 13 of input/output signal optical fiber 1 link up input section 11 reaches output section 12, many the output terminal surface of pump optical fiber 2 all with the input terminal surface of output section 12 meets. The length of the input/output signal optical fiber 1 is determined according to the requirement, one or more annular cutting grooves 3 can be arranged according to the requirement, the annular cutting grooves 3 divide the input/output signal optical fiber 1 into two ends of an input section 11 and an output section 12, but the annular cutting grooves 3 do not affect the cladding corrosion optical fiber section 13 (the cladding corrosion optical fiber section removes part of the cladding in one section of the input/output signal optical fiber by adopting a processing method, so that the cladding is thinned, the optical fiber can be welded), namely, the cladding corrosion optical fiber section 13 is kept in an original shape and is in an integrally formed structure, so that the quality of light beams can be ensured; the number of the pumping optical fibers 2 is determined according to the requirement, and the pumping optical fibers 2 are welded with the input and output signal optical fibers 1 so as to enhance the power; the output ends of the plurality of pump fibers 2 are welded with the side groove surface of the annular cutting groove 3, namely the input end surface of the output section 12, so that connection is realized, and pump amplification is realized.
In this embodiment, the input end face of the output section 12 is a plane that is axially perpendicular to the input/output signal fiber 1, the output end face of the pump fiber 2 is a plane that is axially perpendicular to the input/output signal fiber 1, the pump fiber 2 is axially parallel to the output section 12 after being attached to the output section, and the pump fiber 2 is overlapped and welded with the input end face of the output section 12 through the output end face. After the output end face of the pump optical fiber 2 is attached to the input end face of the output section 12, the pump optical fiber 2 and the cladding corrosion optical fiber section 13 are in a horizontal state, the pump optical fiber 2 is perpendicular to the input end face of the output section 12, the pump optical fiber 2 is axially parallel to the input and output signal optical fiber 1, and then the pump optical fiber 2 is connected with the input and output signal optical fiber 1 through welding to realize pump optical input, so that the power is improved.
Example two:
as shown in fig. 4 and 5, in this embodiment, an input end surface of the output section 12 is an inclined surface, an output end surface of the pump fiber 2 is an inclined surface, the pump fiber 2 is attached to the output section 12 and then axially parallel to the output end surface, and the pump fiber 2 is attached to and welded to the input end surface of the output section 12 through the output end surface. When the input end face of the output section 12 is an inclined face, the front view angle is a hexagon, the solid angle is an octahedron, namely the front face is connected with the cladding corrosion optical fiber section 13, the back face is integrated with the output section 12, and six side faces have inclined angles and are respectively used for welding six pump optical fibers 2; similarly, after the output end face of the pump optical fiber 2 is attached to the input end face of the output section 12, the pump optical fiber 2 and the cladding corrosion optical fiber section 13 are in a horizontal state, i.e., are axially parallel, the pump optical fiber 2 is perpendicular to the input end face of the output section 12, and then the pump optical fiber is connected through fusion to realize pump optical input, so that the power is improved.
Example three:
as shown in fig. 6 and 7, in this embodiment, an input end surface of the output section 12 is a truncated cone inclined surface, an output end surface of the pump fiber 2 is an arc inclined surface, the pump fiber 2 is attached to the output section 12 and then axially parallel to the output section, and the pump fiber 2 is attached to and welded to the input end surface of the output section 12 through the output end surface. Similarly, after the output end face of the pump optical fiber 2 is attached to the input end face of the output section 12, the pump optical fiber 2 and the cladding corrosion optical fiber section 13 are in a horizontal state, i.e., are axially parallel, the pump optical fiber 2 is perpendicular to the input end face of the output section 12, and then the pump optical fiber is connected through fusion to realize pump optical input, so that the power is improved.
It should be noted that the input end surface of the output section 12 includes, but is not limited to, three types, i.e., a vertical plane, an inclined surface, and an arc inclined surface, and accordingly, the shape of the output end surface of the pump fiber 2 is suitably set according to the input end surface of the output section 12, and the two are always perpendicular to each other. The cladding of the input/output signal fiber 1 is generally made by hydrofluoric acid etching, and the end surface of the output section 12 is changed into a right-angle or inclined conical surface, which is generally made by laser etching or grinding, or other means are used, which is not described herein.
In this embodiment, a plurality of the pump fibers 2 are arranged around the cladding-etched fiber segment 13. The pumping optical fiber 2 is arranged around the cladding corrosion optical fiber section 13, so that the pumping light input to the cladding corrosion optical fiber section 13 is more balanced, and the power improving effect is better.
In the present embodiment, the number of the pump fibers 2 is adapted to the annular groove 3, that is, the number of the pump fibers 2 is in a hook with the number of the annular groove 3, and the more the annular groove 3, the more the number of the pump fibers 2.
In the present embodiment, a plurality of pump fibers 2 are correspondingly disposed in one annular slot 3. Specifically, six pump fibers 2 are arranged in one annular cutting groove 3 in a matched manner, and the six pump fibers 2 are arranged around the cladding corrosion fiber section 13 and are connected with the input end face of the output section 12 in a welding manner.
As shown in fig. 11, the preparation method of the high power pumping optical fiber combiner provided by the utility model comprises the following steps: s1, preparing materials: taking an input/output signal optical fiber 1 with proper length and a plurality of pumping optical fibers 2;
s2, manufacturing a ring cutting groove: processing an input/output signal optical fiber 1, and making an annular cutting groove 3 to divide the input/output signal optical fiber 1 into an input section 11 and an output section 12; s3, flattening the pump fiber: the output ends of the plurality of pumping optical fibers 2 are cut flat one by one or cut flat uniformly;
s4, fixed input/output signal fiber: moving the input section 11 and the output section 12 of the input and output signal optical fiber 1 to opposite directions until the cladding corrosion optical fiber section 13 is straightened, respectively clamping the input section 11 and the output section 12 by using a clamping tool, and integrally placing the input section 11 and the output section 12 on a fusion splicer;
s5, leveling the pump fiber: adjusting the output end faces of the multiple pump optical fibers 2 to be flush and adjusted to be distributed in a designated manner, and adapting and fixing the pump optical fibers 2 after leveling;
s6, aligning the optical fibers: placing the fixed pump optical fiber 2 on a fusion splicer and parallel to the input/output signal optical fiber 1, so that the end face of the output end of the pump optical fiber 2 is in the input end face of the output section 12 of the input/output signal optical fiber 1;
s7, optical fiber fusion: the pump optical fiber 2 is pushed to approach the output section 12 until the output end face of the pump optical fiber 2 is attached to the input end face of the output section 12, and the pump optical fiber 2 and the output section 12 are heated and welded through a welding machine;
s8, fixing and packaging: and fixing the welded pump optical fiber 2 and the input/output signal optical fiber 1 on a substrate by adopting a fixing piece or glue to prepare a pump optical fiber combiner, and then putting the pump optical fiber combiner into a box body for packaging.
Specifically, in step S2, the processing for making the annular cutting groove 3 includes chemical etching, laser etching, grinding, and the like. The annular cutting groove 3 can be manufactured by adopting physical processing, chemical reaction and other modes; in step S7, the number of fusion splices of the pump fibers 2 is determined by the number of the pump fibers 2 and the number of fusion splices, and in this embodiment, the number of the pump fibers 2 is six.
As shown in fig. 8, 9, and 10, specifically, in step S5, the specific operation of fitting the fixture is as follows: a line body with the size consistent with the cladding corrosion optical fiber section 13 of the input and output signal optical fiber 1 is taken, a plurality of pump optical fibers 2 are used for surrounding the line body for a circle, then the plurality of pump optical fibers 2 are glued or fixed by using a clamp by taking two as a group or three as a group, and a plurality of groups of pump optical fiber groups are taken down for standby after fixation. The wire body is used for simulating a cladding corrosion optical fiber section 13 of the input and output signal optical fiber 1, so that the pumping optical fibers 2 can realize alignment, six pumping optical fibers 2 surround the wire body for one circle and the end faces of output ends are aligned, the six pumping optical fibers 2 can be positioned in an auxiliary way through an auxiliary clamp when surrounding, then fixing six pumping optical fibers 2 in a way that two pumping optical fibers are in one group or three pumping optical fibers are in one group according to requirements, taking down three groups or two groups of pumping optical fiber groups consisting of two or three pumping optical fibers one by one after fixing, then, when the next step of fusion welding is carried out, the groups of pump optical fiber groups are arranged and combined in sequence, and because the pump optical fiber groups are positioned and fixed, therefore, when in welding, the pumping optical fiber group is only required to be tightly attached to the cladding corrosion optical fiber section 13, and the end face of the output end is attached to the end face of the input end of the output section 12, so that the welding can be carried out; through fixed positioning in advance, can accelerate butt fusion efficiency at the butt fusion during operation to counterpoint when being favorable to the butt fusion, improve the counterpoint precision.
While the embodiments of the present invention have been described in terms of practical embodiments, they are not intended to limit the scope of the invention, and modifications and combinations with other embodiments will be apparent to those skilled in the art in light of the description.
Claims (7)
1. A high power pump fiber combiner, comprising: the optical fiber laser comprises an input/output signal optical fiber (1) and a plurality of pump optical fibers (2), wherein a ring cutting groove (3) is formed in the input/output signal optical fiber (1), the ring cutting groove (3) divides the input/output signal optical fiber (1) into an input section (11) and an output section (12), a cladding corrosion optical fiber section (13) of the input/output signal optical fiber (1) penetrates through the input section (11) and the output section (12), and the output end faces of the pump optical fibers (2) are connected with the input end face of the output section (12).
2. The high power pump fiber combiner of claim 1, wherein: the input end face of the output section (12) is a plane which is axially vertical to the input and output signal optical fiber (1), the output end face of the pump optical fiber (2) is a plane which is axially vertical to the input and output signal optical fiber (1), the pump optical fiber (2) is axially parallel to the output section (12) after being attached, and the pump optical fiber (2) is overlapped and welded with the input end face of the output section (12) through the output end face.
3. The high power pump fiber combiner of claim 1, wherein: the input end face of the output section (12) is an inclined face, the output end face of the pump optical fiber (2) is an inclined face, the pump optical fiber (2) is attached to the output section (12) and then is axially parallel to the output section, and the pump optical fiber (2) is attached to the input end face of the output section (12) through the output end face and is welded.
4. The high power pump fiber combiner of claim 1, wherein: the input end face of the output section (12) is a circular truncated cone inclined plane, the output end face of the pump optical fiber (2) is an arc inclined plane, the pump optical fiber (2) is in axial parallel with the output section (12) after being attached, and the pump optical fiber (2) is attached and welded with the input end face of the output section (12) through the output end face.
5. The high power pump fiber combiner of claim 1, wherein: and the plurality of pumping fibers (2) are arranged by taking the cladding corrosion fiber section (13) as a center in a surrounding way.
6. The high power pump fiber combiner of claim 1, wherein: the number of the pump fibers (2) is adapted to the annular cutting groove (3).
7. The high power pump fiber combiner of claim 6, wherein: a plurality of pumping fibers (2) are correspondingly arranged on one annular cutting groove (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221241137.2U CN217467245U (en) | 2022-05-23 | 2022-05-23 | High-power pumping optical fiber combiner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221241137.2U CN217467245U (en) | 2022-05-23 | 2022-05-23 | High-power pumping optical fiber combiner |
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| CN217467245U true CN217467245U (en) | 2022-09-20 |
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| CN202221241137.2U Active CN217467245U (en) | 2022-05-23 | 2022-05-23 | High-power pumping optical fiber combiner |
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