CN221175050U - High-power combined device - Google Patents
High-power combined device Download PDFInfo
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- CN221175050U CN221175050U CN202322404121.XU CN202322404121U CN221175050U CN 221175050 U CN221175050 U CN 221175050U CN 202322404121 U CN202322404121 U CN 202322404121U CN 221175050 U CN221175050 U CN 221175050U
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- 239000013307 optical fiber Substances 0.000 claims abstract description 34
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 18
- 239000003292 glue Substances 0.000 claims description 10
- 239000006185 dispersion Substances 0.000 claims description 4
- 230000010287 polarization Effects 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 abstract description 16
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- 238000000034 method Methods 0.000 description 6
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- 238000012544 monitoring process Methods 0.000 description 5
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- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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- 238000003698 laser cutting Methods 0.000 description 1
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Abstract
The utility model relates to a high-power combined device, which comprises a shell, wherein a double-optical-fiber head, a double-refraction crystal displacement piece, a wave plate, a lens, a magneto-optical material, a heat sink piece and a photodiode are sequentially arranged in the shell, a magnet ring and a glass tube are also arranged in the shell, the magnet ring is positioned on the periphery of the magneto-optical material, the glass tube is sleeved on the end parts of the lens and the double-optical-fiber head, and the double-refraction crystal displacement piece and the wave plate are positioned in the glass tube. The high-power combined device adopts the heat sink piece to realize good heat dissipation effect; the heat radiator has the advantages of compact structure, small volume, low cost, good heat dissipation, high reliability and the like.
Description
Technical Field
The utility model relates to the technical field of optics and optical fiber communication, in particular to a high-power combined device.
Background
The high-power fiber laser technology is one of the most popular research directions in the field of photoelectric technology at home and abroad in recent years, especially in the field of laser technology. Through researches in recent 30 years, the technology is rapidly developed and is widely applied to the fields of industry, medical treatment, scientific research, military national defense and the like.
Recently, fiber lasers have evolved very rapidly, requiring high power fiber amplifiers, especially those with output powers of tens of hundreds of watts, even up to kilowatts in certain single mode fibers. The high-power device plays an important role in the fields of laser cutting, laser processing, laser radar, laser medical treatment, military and the like.
One conventional high power combining device is a glass tube transmissive structure as shown in fig. 1, comprising two high power single fiber collimators 601 and 602, an optical core 603, and a glass tube 604; the optical core 603 is adhered to the glass tube 604 by heat-conducting adhesive, then the two high-power collimators 601 and 602 are modulated for transmission, and after the index is qualified, the optical core is fixed in the glass tube 604. The magneto-optical material in the optical core 603 of the high-power combined device with the structure can only dissipate heat from four small sides (or cylindrical sides), and the optical core 603 can only dissipate heat through the surrounding magnet and then through the glass tube 604, so that the heat dissipation effect is not ideal. In the process, the high-power single-fiber optical fiber head is required to be made into a collimator and then is subjected to transmission debugging.
Disclosure of utility model
Therefore, the utility model aims to provide a high-power combined device which has the advantages of compact structure, small volume, low cost and good heat dissipation effect.
The utility model is realized by adopting the following scheme: the utility model provides a high-power combination device, includes the shell, be equipped with double optical fiber head, double refraction crystal displacement piece, wave plate, lens, magneto-optical material, heat sink spare and photodiode in proper order in the shell, still be equipped with magnet ring and glass pipe in the shell, magnet ring is located magneto-optical material periphery, glass pipe overcoat is on the tip of lens and double optical fiber head both, and double refraction crystal displacement piece and wave plate are located the glass intraductal.
Further, a slot hole into which the photodiode extends is formed in the middle of the rear portion of the heat sink, a light hole communicated with the slot hole is formed in the middle of the heat sink, the magneto-optical material is fixed at the front end of the light hole through heat conducting glue, a pair of limiting plates with arc-shaped cross sections are symmetrically arranged at the front portion of the heat sink, the front portion of the lens is inserted between the two limiting plates, and the magnet ring is sleeved outside the two limiting plates.
Furthermore, the inner sides of the rear ends of the two limiting sheets are respectively provided with a propping part used for propping against the rear end face of the lens, and the magneto-optical material is positioned in the middle of the propping parts at the two sides.
Further, the magneto-optical material adopts magneto-optical crystal or magneto-optical ceramic.
Further, a polarization mode dispersion compensation sheet is arranged between the birefringent crystal displacement sheet and the lens.
Compared with the prior art, the utility model has the following beneficial effects: the high-power combined device adopts the heat sink piece to realize good heat dissipation effect; the high-power double-optical-fiber head is adopted, only one-time reflection is required to be debugged, the material cost is low, and the process is simpler; the heat radiator has the advantages of compact structure, small volume, low cost, good heat dissipation, high reliability and the like.
The present utility model will be further described in detail below with reference to specific embodiments and associated drawings for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.
Drawings
FIG. 1 is a schematic diagram of a conventional high power device;
FIG. 2 is a schematic diagram of a cross-sectional structure of a high-power combiner as a power monitor detector in an embodiment of the present utility model;
FIG. 3 is a cross-sectional view of a high power device as a high power isolator in an embodiment of the present utility model;
FIG. 4 is a diagram of an assembled lens assembly according to an embodiment of the present utility model;
FIG. 5 is a block diagram of a dual fiber optic head assembly and lens assembly in an embodiment of the utility model;
FIG. 6 is a diagram of a glass tube assembly structure of a high power combiner as a high power isolator in an embodiment of the present utility model;
FIG. 7 is a block diagram of a high power combining device as a high power isolator plus housing in an embodiment of the present utility model;
FIG. 8 is a block diagram of a glass tube assembly of a high power combining device as a power monitoring detector in an embodiment of the present utility model;
FIG. 9 is a block diagram of a high power combining device as a power monitoring detector plus a housing in an embodiment of the present utility model;
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As shown in fig. 2-3, a high-power combined device comprises a housing 401, wherein a double optical fiber head 101, a double refraction crystal displacement sheet 102, a wave plate 103, a lens 203, a magneto-optical material 202, a heat sink 201 and a photodiode 501 are sequentially arranged in the housing 401, the double optical fiber head 101 adopts the high-power double optical fiber head, a magnet ring 204 and a glass tube 301 are further arranged in the housing 401, the magnet ring 204 is positioned on the periphery of the magneto-optical material 202, the glass tube 301 is sleeved on the end parts of the lens 203 and the double optical fiber head 101, and the double refraction crystal displacement sheet 102 and the wave plate 103 are positioned in the glass tube; the working wavelength range of the high-power combined device is not limited, and the high-power combined device can be realized as long as the wavelength can be operated by magneto-optical materials. Common wavelengths are 1064nm band, 1310 band and 1550 band.
Two ends of the dual optical fiber head 101 are defined as a port P1 and a port P2; the double optical fiber heads can be arranged at intervals or at intervals, the high-power processing mode of the optical fibers can be thermal beam expansion or fusion bonding of coreless optical fibers or high-power coating of common optical fibers, and the selection is carried out according to the actual power intensity and the cost performance. The double optical fiber head 101, the double refraction crystal displacement sheet 102, the wave plate 103, the lens 203, the magneto-optical material 202, the magnet ring 204, the heat sink 201, the glass tube 301 and the shell 401 form a high-power isolator to realize P1-P2 light transmission and P2-P1 light path isolation, as shown in figure 3.
The high power isolator plus the partially reflective film on the magneto-optical material 202 and the photodiode 501 constitute a power monitoring detector, as shown in fig. 2. The light beam is input from the P1 port of the dual-fiber head 101, passes through the birefringent crystal displacement plate 102, the wave plate 103, the lens 203 and the magneto-optical material 202, and is reflected by the magneto-optical material 202 and received by the P2 port of the dual-fiber head 101. P1-P2 light transmission and P2-P1 light path isolation are realized.
In this embodiment, a slot 205 into which the photodiode extends is disposed in the middle of the rear portion of the heat sink 201, a light hole 206 communicating with the slot is disposed in the middle of the rear portion of the heat sink 201, the magneto-optical material 202 is fixed at the front end of the light hole by a heat conducting adhesive, a pair of limiting plates 207 with arc-shaped cross sections are symmetrically disposed on the front portion of the heat sink 201, the front portion of the lens is inserted between the two limiting plates, and the magnet ring is sleeved outside the two limiting plates. The heat sink piece realizes the heat dissipation of the magneto-optical crystal on one hand, and on the other hand, as a main body structure, provides positioning and fixing functions for the magneto-optical crystal, the lens, the magnet, the photodiode and the shell.
In this embodiment, the inner sides of the rear ends of the two limiting plates are respectively provided with a propping portion 208 for propping against the rear end surface of the lens 203, and the magneto-optical material 202 is located between the propping portions 208 on both sides; all the light-transmitting parts can be subjected to heat dissipation treatment by using heat-conducting glue, and heat generated by high power can be led out to the shell.
In this embodiment, the shape of the magnet ring may be changed according to the application, and may be a magnet ring with an integral structure or a magnet combination.
Fig. 4 is a view showing an assembly structure of a lens assembly according to the present utility model, in which a magneto-optical material 202 is fixed to a heat sink 201 by using a heat conductive adhesive in fig. 4b, a lens 203 is fixed to the heat sink 201 in fig. 4c, and a magnet 204 is also fixed to the heat sink 201 in fig. 4d, so that the lens assembly 200 is finally assembled.
Fig. 5 is a diagram showing the structure of a double optical fiber head assembly and a lens assembly according to the present utility model, a birefringent crystal displacement plate 102 is attached to the end surface of a high-power double optical fiber head 101 by a heat-conducting adhesive in a horizontal or vertical direction, and a wave plate 103 is attached to one side of the birefringent crystal displacement plate 102 to form a double optical fiber head assembly 100. The lens assembly 200 is aligned in the direction of the dual-fiber-head assembly 100, and the index is adjusted by reflection.
In this embodiment, the magneto-optical material 202 is a magneto-optical crystal or magneto-optical ceramic material for realizing a magneto-optical effect, and the magneto-optical material may be an antireflection film and a partial reflection film, and the other surfaces may be a plane or a cylindrical surface; or an antireflection film and a high reflection film; besides the light-transmitting surface of one antireflection film, other surfaces can be used for heat dissipation, so that the antireflection film has the best effect on a high-power device; or the two surfaces are both antireflection films, and part of the reflecting surface or the high-reflection film is arranged on the other independent film; in the case of an antireflection film on both sides, for some types of magneto-optical materials, it is also conceivable to use sapphire for close-fitting and heat dissipation to increase the heat dissipation effect.
In this embodiment, a polarization mode dispersion compensation sheet is disposed between the birefringent crystal plate 102 and the lens 203 to satisfy certain applications requiring polarization mode dispersion.
Fig. 6 is a view showing an assembled structure of a glass tube as a high-power isolator of the high-power combining device of the present utility model. When the high power device is a high power isolator, the photodiode 501 is not needed, and the magneto-optical material 202 may be an antireflection film and a high reflection film; or the two sides of the film are both antireflection films, and the high reflection film is arranged on the other independent film. The light source connection port P1, the power meter connection port P2, the light beam input by the P1 end is reflected by the high-reflection film behind the magneto-optical material 202 or another independent high-reflection sheet after passing through the birefringent crystal displacement sheet 102, the wave plate 103, the lens 203 and the magneto-optical material 202, and then is received by the P2 port of the high-power dual-optical-fiber head 101, and after the lens assembly 200 and the dual-optical-fiber head assembly 100 are debugged to meet the required insertion loss index, the glass tube 301 is sleeved on the lens assembly 200 and the dual-optical-fiber head assembly 100, and is glued and fixed.
Fig. 7 is a block diagram of the high power combining device of the present utility model as a high power isolator plus housing. After the glass tube 301 is assembled, the whole device is sealed in the shell 401, the heat sink 201 and the magnet ring 204 are directly adhered to the shell 401 through heat conduction glue, the heat dissipation effect is good, the cylindrical surfaces of the glass tube 301 and the high-power double-optical-fiber head 101 are adhered and fixed to the shell 401 through the heat conduction glue, and the packaging of the whole device is completed.
FIG. 8 is a diagram showing the assembled structure of the glass tube of the high-power combined device as a power monitoring detector. When the high power combining device is a power monitoring detector, a photodiode 501 is required, and the magneto-optical material 202 may be an antireflection film and a partially reflective film; or the two surfaces of the film are antireflection films, and part of the reflecting surface is arranged on the other independent film.
The light source connecting port P1 and the power meter connecting port P2 are used for sleeving the glass tube 301 on the lens assembly 200 and the double-optical-fiber-head assembly 100 after the lens assembly 200 and the double-optical-fiber-head assembly 100 are debugged to meet the required insertion loss index, and then gluing and fixing are carried out; the photodiode 501 is then aligned and the photodiode 501 is positioned so that the response current meets the requirements, securing the photodiode 501 to the heat sink 201.
Fig. 9 is a block diagram of the high power combining device of the present utility model as a power monitor detector plus housing. After the glass tube 301 is assembled, the whole device is sealed in the shell 401, the heat sink 201 and the magnet ring 204 are directly adhered to the shell 401 through heat conduction glue, the heat dissipation effect is good, the cylindrical surfaces of the glass tube 301 and the high-power double-optical-fiber head 101 are adhered and fixed to the shell 401 through the heat conduction glue, and the packaging of the whole device is completed.
The heat sink is adopted, and the heat sink and the shell are directly adhered through the heat-conducting glue, so that the heat dissipation effect is good; in addition, the heat dissipation of the magneto-optical crystal is realized, and on the other hand, the magneto-optical crystal is used as a main body structure to provide positioning and fixing functions for the magneto-optical crystal, the lens, the magnet, the photodiode and the shell.
The birefringent crystal displacement sheet and wave size in the utility model are very small, and the material cost is low; the magneto-optical material only needs 22.5 degrees, and the thickness of the magneto-optical material is changed from 45 degrees to 22.5 degrees relative to 45 degrees, so that the magneto-optical material is thinner, the cost is lower, and the thinner heat dissipation is better; in addition, magneto-optical materials have 5 sides to dissipate heat, and conventional magneto-optical materials can only dissipate heat from four small sides.
The utility model adopts one high-power double optical fiber head, only one reflection is required to be debugged, and in the conventional structure, two high-power single optical fiber heads are required to be made into two collimators first, and then transmission is required to be debugged. Therefore, the utility model has the advantages of low material cost and simpler process.
The utility model relates to an assembly method of a high-power combined device, which comprises the following steps:
(1) The birefringent crystal displacement piece 102 is stuck to the end face of the double optical fiber head 101 by using heat conduction glue according to the horizontal or vertical direction, and the wave plate 103 is stuck to one side of the birefringent crystal displacement piece 102 to form the double optical fiber head assembly 100;
(2) Fixing magneto-optical material 202 on heat sink 201 by heat conducting glue, and fixing lens 203 and magnet 204 on heat sink 201 to form a lens assembly;
(3) The light source is connected with one port of the double optical fiber head 101, and the power meter is connected with the other port of the double optical fiber head 101;
(4) The lens assembly 200 is aligned in the direction of the dual-fiber head assembly 100, and the loss on the power meter is adjusted to be minimum by using a reflection method, and the typical value is 0.3dB, so that a reflection dual-fiber collimator is formed;
(5) Aligning the reflective dual-fiber collimator with the photodiode 201, adjusting the position of the photodiode 201 to enable the response current to meet the requirement, and fixing the photodiode 201 on the heat sink 201;
(6) And packaging the debugged whole device in a shell to complete the packaging of the high-power combined device.
Any of the above-described embodiments of the present utility model disclosed herein, unless otherwise stated, if they disclose a numerical range, then the disclosed numerical range is the preferred numerical range, as will be appreciated by those of skill in the art: the preferred numerical ranges are merely those of the many possible numerical values where technical effects are more pronounced or representative. Since the numerical values are more and cannot be exhausted, only a part of the numerical values are disclosed to illustrate the technical scheme of the utility model, and the numerical values listed above should not limit the protection scope of the utility model.
If the utility model discloses or relates to components or structures fixedly connected with each other, then unless otherwise stated, the fixed connection is understood as: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).
In addition, terms used in any of the above-described aspects of the present disclosure to express positional relationship or shape have meanings including a state or shape similar to, similar to or approaching thereto unless otherwise stated.
Any part provided by the utility model can be assembled by a plurality of independent components, or can be manufactured by an integral forming process.
The above description is only a preferred embodiment of the present utility model, and is not intended to limit the utility model in any way, and any person skilled in the art may make modifications or alterations to the disclosed technical content to the equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present utility model still fall within the protection scope of the technical solution of the present utility model.
Claims (5)
1. A high power combination device, characterized by: the optical fiber lens comprises a shell, wherein a double-optical fiber head, a double-refraction crystal displacement piece, a wave plate, a lens, a magneto-optical material, a heat sink piece and a photodiode are sequentially arranged in the shell, a magnet ring and a glass tube are further arranged in the shell, the magnet ring is positioned on the periphery of the magneto-optical material, the glass tube is sleeved on the end parts of the lens and the double-optical fiber head, and the double-refraction crystal displacement piece and the wave plate are positioned in the glass tube.
2. The high power combining device of claim 1, wherein: the magneto-optical material is fixed at the front end of the light hole through heat conducting glue, a pair of limiting plates with arc-shaped sections are symmetrically arranged at the front part of the heat sink, the front part of the lens is inserted between the two limiting plates, and the magnet ring is sleeved outside the two limiting plates.
3. The high power combining device of claim 2, wherein: the inner sides of the rear ends of the two limiting sheets are respectively provided with a propping part used for propping against the rear end face of the lens, and the magneto-optical material is positioned between the propping parts at the two sides.
4. The high power combining device of claim 1, wherein: the magneto-optical material adopts magneto-optical crystal or magneto-optical ceramic.
5. The high power combining device of claim 1, wherein: and a polarization mode dispersion compensation sheet is arranged between the birefringent crystal displacement sheet and the lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322404121.XU CN221175050U (en) | 2023-09-05 | 2023-09-05 | High-power combined device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322404121.XU CN221175050U (en) | 2023-09-05 | 2023-09-05 | High-power combined device |
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| Publication Number | Publication Date |
|---|---|
| CN221175050U true CN221175050U (en) | 2024-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322404121.XU Active CN221175050U (en) | 2023-09-05 | 2023-09-05 | High-power combined device |
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| Country | Link |
|---|---|
| CN (1) | CN221175050U (en) |
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2023
- 2023-09-05 CN CN202322404121.XU patent/CN221175050U/en active Active
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