CN214669933U - Packaging structure of all-fiber coupler - Google Patents
Packaging structure of all-fiber coupler Download PDFInfo
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- CN214669933U CN214669933U CN202120971470.8U CN202120971470U CN214669933U CN 214669933 U CN214669933 U CN 214669933U CN 202120971470 U CN202120971470 U CN 202120971470U CN 214669933 U CN214669933 U CN 214669933U
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Abstract
The utility model discloses an encapsulation structure of an all-fiber coupler, which comprises a shell, a fixed bracket and a movable bracket, wherein the fixed bracket and the movable bracket are connected with the shell; the acousto-optic pyramid is positioned on the movable support mounting table, is movably connected with the movable support mounting table before being packaged, and can adjust the height along the axial direction of the pyramid; the two ends of the acousto-optic fiber are respectively connected to the acousto-optic pyramid and the fixed bracket; the electric drive interface is fixedly connected with the movable support mounting table and is electrically connected with the acousto-optic pyramid; the adjusting device is positioned on the shell and can adjust the positions of the movable support sliding block, the acousto-optic pyramid positioned on the movable support mounting table and the electric drive interface; the utility model discloses a set up support device and adjusting device on the casing, connect reputation optic fibre and reputation pyramid on support device and adjusting device, can adjust the position that moves support and reputation pyramid through adjusting device to adjust optic fibre stress.
Description
Technical Field
The utility model belongs to the technical field of fiber coupler, more specifically relates to an all-fiber coupler's packaging structure.
Background
An optical fiber coupler, also called an optical fiber splitter, is an element for splitting an optical signal from one optical fiber into a plurality of optical fibers, belongs to the field of optical passive elements, and is applied to telecommunication networks, cable television networks, subscriber loop systems and local area networks.
The side-coupled all-fiber acousto-optic coupler is a novel all-fiber device, has multiple applications, and particularly has important applications in all-fiber acousto-optic frequency shifters and all-fiber tunable lasers; the structure has the characteristics of simple structure and low cost, but the prior technical scheme can not be better applied to products, the fundamental reason is that the structure needs the refractive index matching liquid to expand the range of an evanescent field, the other important reason is that the all-fiber acousto-optic device has the characteristic of stress response, and the resonant wavelength can move along with the change of stress. This makes the conventional packaging approach unable to provide effective stress control, and therefore, cannot be applied.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an all-fiber coupler's packaging structure, the packaging structure who solves all-fiber acoustic optical coupler at least can't provide the technical problem of effectual stress regulation and control etc..
In order to achieve the above object, the present invention provides an encapsulation structure of an all-fiber coupler, which comprises a housing and a plurality of optical fibers,
the bracket device comprises a fixed bracket and a movable bracket, and the fixed bracket is fixedly connected with the shell; the movable bracket is movably connected with the shell;
the movable support comprises a movable support sliding block and a movable support mounting table, and the movable support sliding block is positioned below the movable support mounting table and is fixedly connected with the movable support mounting table;
the acousto-optic pyramid is positioned on the movable support mounting table, is movably connected with the movable support mounting table before being packaged, and can adjust the height along the axial direction of the pyramid;
one end of the acousto-optic fiber is connected to the acousto-optic pyramid, and the other end of the acousto-optic fiber is connected to the fixed support;
the electric drive interface is positioned on the movable support mounting table, is fixedly connected with the movable support mounting table and is electrically connected with the acousto-optic pyramid;
the adjusting device is positioned on the shell and connected with the movable support sliding block, and the positions of the movable support sliding block, the acousto-optic pyramid on the movable support mounting table and the electric drive interface can be adjusted through the adjusting device.
Optionally, the adjusting device comprises an elastic part, a screw hole structure and a differential screw, the elastic part is connected with one end of the movable bracket sliding block, one end of the differential screw is connected with the other end of the movable bracket sliding block, and the other end of the differential screw is fixedly connected with the dustproof fixing frame; the screw hole structure is positioned on the surface of the movable support mounting table, the acousto-optic pyramid is mounted on the screw hole structure, and the height of the acousto-optic pyramid along the axis direction can be finely adjusted through the screw hole structure before packaging. The electric drive interface and the packaged acousto-optic pyramid are fixedly connected with the movable support mounting table, and do not move relatively in the adjusting process of the movable support.
Optionally, the adjusting device further comprises a spring positioner, the spring positioner is fixedly connected to the housing, and one side of the spring positioner is connected to the elastic member. .
Optionally, the fixed support comprises an optical fiber support, a coupling support and a dustproof fixing frame, the optical fiber support and the dustproof fixing frame are respectively located at two ends of the shell, and the differential screw is fixed on one side of the dustproof fixing frame.
Optionally, a substrate is disposed on the coupling support, and the substrate is made of magnesium fluoride or pdms.
Optionally, the optical fiber module further comprises a coupling optical fiber, wherein the coupling optical fiber is adhered to the coupling bracket and is attached and connected with the acousto-optic fiber through refractive index matching fluid.
Optionally, a window is provided on the housing for supplementing the refractive index matching fluid.
The utility model has the advantages that:
the utility model discloses a set up support device and adjusting device on the casing, connect reputation optic fibre and reputation pyramid on support device and adjusting device, can adjust the position that moves support and reputation pyramid through adjusting device to adjust optic fibre stress.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout the exemplary embodiments of the present invention.
Fig. 1 shows a schematic structural diagram of an embodiment of the present invention;
fig. 2 shows a schematic structural diagram of an embodiment of the present invention;
fig. 3 is a schematic flow chart of a packaging method according to an embodiment of the present invention.
Reference numerals: 1. a housing; 2. an optical fiber holder; 3. a coupling bracket; 4. a dustproof fixing frame; 5. a movable bracket sliding block; 6. an elastic member; 7. a spring locator; 9. an electric drive interface; 10. acousto-optic pyramid; 11. a substrate; 12. a differential screw; 13. an acousto-optic fiber; 14. a coupling optical fiber; 15. and a movable support mounting table.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
On one hand, the utility model provides a packaging structure of an all-fiber coupler, which comprises a shell and a plurality of optical fiber coupler,
the bracket device comprises a fixed bracket and a movable bracket, and the fixed bracket is fixedly connected with the shell; the movable bracket is movably connected with the shell;
the movable support comprises a movable support sliding block and a movable support mounting table, and the movable support sliding block is positioned below the movable support mounting table and is fixedly connected with the movable support mounting table;
the acousto-optic pyramid is positioned on the movable support mounting table, is movably connected with the movable support mounting table before packaging, and can adjust the height along the axial direction of the pyramid;
one end of the acousto-optic fiber is connected to the acousto-optic pyramid, and the other end of the acousto-optic fiber is connected to the fixed support;
the electric drive interface is positioned on the movable support mounting table, is fixedly connected with the movable support mounting table and is electrically connected with the acousto-optic pyramid;
the adjusting device is positioned on the shell and connected with the movable support sliding block, and the positions of the movable support sliding block, the acousto-optic pyramid on the movable support mounting table and the electric drive interface can be adjusted through the adjusting device.
The shell can be a U-shaped shell with a groove-shaped structure, or can be of other similar structures, the material can be an aluminum profile, preferably an European standard 2010 profile, the cost is low, and better adaptation can be achieved; the material of the shell can also be stainless steel or other alloy materials; the shell can also be made into a sealing structure by glue, the optical fiber sensor with special treatment and the optical fiber structure attached with other surface microstructures can also be packaged by the structure, different shell lengths can be selected according to the size of the packaged structure and the sensitivity of the sensor, and if the optical fiber surface has the microstructure afraid of pollution, the packaging can be completed in a clean room. The fixed support can be fixed on the shell through a screw or can be adhered to the shell; the electric drive interface is electrically connected with the acousto-optic pyramid, and the acousto-optic pyramid is electrically connected to the electric drive interface for insulation; the electric drive interface and the packaged acousto-optic pyramid are fixedly connected with the movable support mounting table, and do not move relatively in the adjusting process of the movable support; through be equipped with support device, reputation optic fibre, reputation pyramid and adjusting device on the casing, change the position of moving the support and the reputation pyramid on it through adjustment adjusting device to can adjust the tensioning degree and the height of reputation pyramid of connecting in moving between support and the fixed bolster, realize adjusting optic fibre stress.
The utility model discloses a set up support device and adjusting device on the casing, connect reputation optic fibre and reputation pyramid on support device and adjusting device, can adjust the position that moves support and reputation pyramid through adjusting device to adjust optic fibre stress.
As a preferred scheme, the adjusting device comprises an elastic part, a screw hole structure and a differential screw, the elastic part is connected with one end of the movable bracket sliding block, one end of the differential screw is connected with the other end of the movable bracket sliding block, and the other end of the differential screw is fixedly connected with the dustproof fixing frame; the screw hole structure is positioned on the surface of the movable support mounting table, the acousto-optic pyramid is mounted on the screw hole structure, and the height of the acousto-optic pyramid along the axis direction can be finely adjusted through the screw hole structure before packaging.
The elastic member may be a spring or other elastic member, which is not limited herein, and the position of the movable bracket is changed by adjusting the expansion and contraction degree of the spring through adjusting a differential screw, so that the tension degree of the acousto-optic fiber connected between the movable bracket and the fixed bracket can be adjusted, and the adjustable stress of the acousto-optic fiber is realized; the differential screw is in threaded connection with the dustproof fixing frame, and the position of the movable support is changed by adjusting the length of the differential screw, so that the stress of the acousto-optic fiber is adjusted; the movable support mounting table is provided with a screw hole structure, the height of the acousto-optic pyramid can be adjusted by the screw hole structure before packaging, and an electric drive interface is used for loading a radio-frequency signal of acousto-optic pyramid resonance for driving the acousto-optic pyramid.
As a preferable scheme, the adjusting device further comprises a spring positioner, the spring positioner is fixedly connected to the housing, and one side of the spring positioner is connected with the elastic member.
It should be noted that the spring positioner is used for adjusting the elastic force of the spring and providing power for moving the support to the return position.
As a preferred scheme, the fixed support comprises an optical fiber support, a coupling support and a dustproof fixing frame, the optical fiber support and the dustproof fixing frame are respectively located at two ends of the shell, and the differential screw is fixed on one side of the dustproof fixing frame.
It should be noted that the optical fiber support, the coupling support and the dustproof fixing frame may be fixed to the housing by screws or may be bonded to the housing, and the dustproof fixing frame is a dustproof member, specifically, a dustproof cover, and can play a dustproof role in the end of the U-shaped housing.
Preferably, a substrate is arranged on the coupling support, and the substrate is made of magnesium fluoride or pdms.
It should be noted that the substrate is typically a low refractive index (less than the refractive index of the optical fiber), and may be magnesium fluoride or pdms, which is used to support the coupling region. The micro-nano optical fiber extending part outside the coupling area also needs to be laid on the coupling support, so that the packaging and shape keeping are convenient. The fiber support is used to secure the output fiber of the AOTF to the output portion of the coupling fiber.
As a preferable scheme, the optical fiber coupling device further comprises a coupling optical fiber, wherein the coupling optical fiber is adhered to the coupling bracket and is connected with the acousto-optic fiber in an adhering mode through refractive index matching fluid.
Preferably, a window is provided on the housing.
It should be noted that an opening is reserved on the housing to facilitate the supplement of the refractive index matching fluid.
On the other hand, the utility model provides a packaging method of full fiber coupler, include:
s1: providing a housing;
s2: fixedly connecting a fixed support to the shell, movably connecting a movable support to the shell, wherein the movable support comprises a movable support sliding block and a movable support mounting table, and the movable support sliding block is positioned below the movable support mounting table and is fixedly connected with the movable support mounting table;
s3: movably connecting an acousto-optic pyramid on the movable support mounting table, and fixedly connecting an electric drive interface on the movable support mounting table;
s4: an adjusting device is arranged on the shell and connected with the movable support sliding block, and the positions of the movable support sliding block, the acousto-optic pyramid arranged on the movable support mounting table and the electric drive interface can be adjusted through the adjusting device;
s5, adjusting the height of the acousto-optic pyramid through a screw hole structure, then respectively adhering two sides of the acousto-optic fiber to the acousto-optic pyramid and the fixed support through dispensing and fixing the position, and electrically connecting the electric drive interface with the acousto-optic pyramid;
s6: and adjusting the coupling optical fiber, optimizing output, and then adhering the coupling optical fiber to the fixed support and the coupling support.
It should be noted that, the fixed support is fixedly connected to the housing, the adjusting device is positioned on the housing, and the acousto-optic pyramid is fixed on the movable support mounting table by dispensing after the height of the acousto-optic pyramid is adjusted; then the acousto-optic fiber is bonded on the acousto-optic pyramid and the fixed support of the movable support mounting table; and finally, fixedly connecting the coupling optical fiber to the coupling bracket. By the packaging method, the positions of the movable support and the acousto-optic pyramid can be conveniently and integrally adjusted, so that the stress of the optical fiber can be adjusted; and through this kind of packaging method, reduced technology degree of difficulty and manufacturing cost.
As a preferable scheme, the adjusting device includes an elastic member, a screw hole structure, a differential screw, a spring positioner, a movable support slider and a movable support mounting table, and the specific process of step S4 includes: the elastic piece is connected with one end of the movable support sliding block, one end of the differential screw is connected with the other end of the movable support sliding block, and the other end of the differential screw is connected with the dustproof fixing frame; the spring positioner is fixedly connected to the shell, one side of the spring positioner is connected with the elastic part, the movable support mounting table is fixedly arranged on the upper portion of the movable support sliding block, the screw hole structure is located on the movable support mounting table, one end of the screw hole structure is movably connected with the acousto-optic pyramid before packaging, and the electric drive interface is located on the movable support mounting table.
As a preferred scheme, the fixed support comprises an optical fiber support, a coupling support and a dustproof fixing frame, the optical fiber support and the dustproof fixing frame are respectively positioned at two ends of the shell, a substrate is arranged on the coupling support, and the coupling support and the substrate are fixedly connected through packaging glue such as ultraviolet curing glue; and after the coupling support and the substrate are connected, irradiating and curing by using an ultraviolet lamp.
The utility model discloses an encapsulation process: during installation, the acousto-optic pyramid is installed on the movable support installation table and installed on a flat iron or stainless steel screw to absorb redundant sound waves, and on the other hand, the height of the acousto-optic pyramid is adjusted by matching the screw hole structure on the movable support installation table with the screw, so that the acousto-optic pyramid is equal to the substrate on the coupling support in height. During the adjustment process, a common optical fiber can be used as a collimation reference. And after the adjustment is finished, fixing the screw by dispensing glue.
After the acousto-optic fiber and the acousto-optic pyramid are bonded, the other end of the acousto-optic fiber is bonded on the substrate of the coupling bracket, and the condition that the acousto-optic fiber is attached to the substrate with low refractive index is met. The part is bonded by loading an acousto-optic pyramid resonance radio frequency signal from electric drive and changing the position of a movable support sliding block through a differential screw so as to adjust the stress of the optical fiber and observe a sinking peak of a working wavelength section on a spectrum analyzer. The coupling optical fiber is matched with an additional three-dimensional translation table, so that the output light of the coupling optical fiber is optimized to an ideal state, and the coupling optical fiber and the bonded acousto-optic optical fiber are ensured to be attached to the substrate with low refractive index. And sealing the coupling bracket and the low-refractive-index substrate by using packaging glue such as low-refractive-index ultraviolet curing glue and the like, removing partial coverage of the optical fiber coupling area, and irradiating and curing by using an ultraviolet lamp. The height of the dustproof fixing frame is adjusted, and the tail fiber of the input acousto-optic fiber is smoothly bonded on the dustproof fixing frame. The whole structure is sealed and protected.
Example 1
Referring to fig. 1 and fig. 2, the present invention provides a package structure of all-fiber coupler, which includes a housing 1, and further includes,
the bracket device comprises a fixed bracket and a movable bracket, wherein the fixed bracket is fixedly connected with the shell 1;
the movable bracket is movably connected with the shell 1;
the movable support comprises a movable support sliding block 5 and a movable support mounting table 15, and the movable support sliding block 5 is positioned below the movable support mounting table 15 and is fixedly connected with the movable support mounting table 15;
the acousto-optic pyramid 10 is positioned on the movable support mounting table 15, is movably connected with the movable support mounting table 15 before being packaged, and can be adjusted in height along the axial direction of the pyramid;
one end of the acousto-optic fiber 13 is connected to the acousto-optic pyramid 10, and the other end of the acousto-optic fiber 13 is connected to the fixed support;
the electric drive interface 9 is positioned on the movable support mounting table 15, is fixedly connected with the movable support mounting table 15 and is electrically connected with the acousto-optic pyramid 10;
the adjusting device is positioned on the shell 1 and connected with the movable support sliding block 5, and the positions of the movable support sliding block 5, the acousto-optic pyramid 10 on the movable support mounting table 15 and the electric drive interface 9 can be adjusted through the adjusting device.
The shell 1 can be a U-shaped shell with a groove-shaped structure, and can also be of other similar structures, the material can be an aluminum profile, preferably an European standard 2010 profile, the cost is low, and better adaptation can be achieved; the material of the shell 1 can also be stainless steel or other alloy materials; the shell 1 can also be made into a sealing structure by glue, a specially processed optical fiber sensor, and an optical fiber structure attached with other surface microstructures can also be packaged by the structure, different shell lengths can be selected according to the size of the packaged structure and the sensitivity of the sensor, and if the surface of the optical fiber 8 has a microstructure afraid of pollution, the packaging can be completed in a clean room; a window is arranged on the shell 1, and a window (not shown in the figure) is reserved on the shell 1 for conveniently supplementing the refractive index matching fluid; the fixed support can be fixed on the shell 1 through screws or can be adhered to the shell 1; the electric driving interface 9 is electrically connected with the acousto-optic pyramid 10, and the acousto-optic pyramid 10 is electrically connected to the electric driving interface 9 for insulation; the electric drive interface 9 is fixedly connected with the movable support and does not move relatively in the adjusting process. Through being equipped with support device, reputation optic fibre 13, reputation pyramid 10 and adjusting device on casing 1, change the position of moving support and reputation pyramid 10 through adjustment adjusting device to can adjust the tensioning degree of connecting in reputation optic fibre 13 between moving support and the fixed bolster and the height of reputation pyramid 10, realize adjusting optic fibre stress.
Specifically, the fixed support comprises an optical fiber support 2, a coupling support 3 and a dustproof fixing frame 4, wherein the optical fiber support 2 and the dustproof fixing frame 4 are respectively located at two ends of the shell 1.
The optical fiber support 2, the coupling support 3 and the dustproof fixing frame 4 can be fixed on the shell 1 through screws and can also be bonded on the shell 1, and the dustproof fixing frame 4 is a dustproof part, specifically can be a dustproof cover and can play a dustproof role at the end of the U-shaped shell.
Specifically, the optical fiber coupler also comprises a coupling optical fiber 14, wherein the coupling optical fiber 14 is adhered to the coupling bracket 3 and is attached and connected with the acousto-optic fiber 13 through refractive index matching fluid; the coupling support 3 is provided with a substrate 11, and the substrate 11 is made of magnesium fluoride or pdms.
The substrate 11 is typically a low index (less than the index of refraction of the fiber) substrate 11, and may be typically magnesium fluoride or pdms, for supporting the coupling region. The micro-nano optical fiber extending part outside the coupling area also needs to be laid on the coupling bracket 3, so that the packaging and shape keeping are convenient. The fiber holder 2 is used to hold the output fiber of the AOTF to the output section of the coupling fiber.
Specifically, the adjusting device comprises a spring positioner 7, an elastic part 6, a screw hole structure (not shown in the figure) and a differential screw 12, wherein the elastic part 6 is connected with one end of the movable bracket sliding block 5, one end of the differential screw 12 is connected with the other end of the movable bracket sliding block 5, and the other end of the differential screw 12 is fixedly connected with the dustproof fixing frame 4; the screw hole structure is positioned on the surface of the movable support mounting table 15, the acousto-optic pyramid 10 is mounted on the screw hole structure, and the height of the acousto-optic pyramid 10 along the axis direction can be finely adjusted through the screw hole structure before packaging; the differential screw 12 is fixed on one side of the dustproof fixing frame 4.
The elastic part 6 can be a spring or other elastic parts, and is not limited here, the position of the movable support sliding block 5 is changed by adjusting the expansion degree of the spring through adjusting a differential screw 12, so that the tensioning degree of the acousto-optic fiber 13 connected between the movable support and the coupling support 3 can be adjusted, and the adjustable stress of the acousto-optic fiber 13 is realized; the differential screw 12 is in threaded connection with the dustproof fixed mount 4, and the positions of the movable support sliding block 5, the movable support mounting table 15 on the movable support sliding block and the acousto-optic pyramid 10 are changed by adjusting the length of the differential screw 12, so that the stress of the acousto-optic fiber 13 is adjusted; a screw hole structure is arranged on the movable support mounting table, the height of the acousto-optic pyramid 10 can be adjusted through the screw hole structure, and an acousto-optic pyramid resonance radio frequency signal is loaded from the electric drive interface and is used for driving the acousto-optic pyramid; the spring positioner 7 is used for adjusting the elastic force of the spring and providing power for moving the return position of the bracket sliding block.
The utility model discloses a set up support device and adjusting device on casing 1, connect reputation optic fibre 13 and reputation pyramid 10 on support device and adjusting device, can adjust the position that moves support slider, the movable support mount table 15 and reputation pyramid 10 on it through adjusting device to adjust optic fibre stress.
Example 2
Referring to fig. 3, the present invention provides a method for packaging an all-fiber coupler, which is used to prepare the packaging structure of the all-fiber coupler according to embodiment 1, specifically including a housing 1, and further including,
s1: providing a housing 1;
s2: fixedly connecting a fixed support to the shell 1, movably connecting a movable support to the shell 1, wherein the movable support comprises a movable support sliding block 5 and a movable support mounting table 15, and the movable support sliding block 5 is positioned below the movable support mounting table 15 and is fixedly connected with the movable support mounting table 15;
s3: movably connecting an acousto-optic pyramid 10 on the movable support mounting table 15, and fixedly connecting an electric drive interface 9 on the movable support mounting table 15;
s4: an adjusting device is positioned on the shell 1, the adjusting device is connected with the movable support sliding block 5, and the positions of the movable support sliding block 5, the acousto-optic pyramid 10 positioned on the movable support mounting table 15 and the electric drive interface 9 can be adjusted through the adjusting device;
s5, adjusting the height of the acousto-optic pyramid 10 through a screw hole structure, then respectively adhering two sides of an acousto-optic fiber 13 to the acousto-optic pyramid 10 and the fixed support through dispensing and fixing positions, and electrically connecting the electric drive interface 9 with the acousto-optic pyramid 10;
s6: adjusting the coupling optical fiber 14, optimizing the output, and then adhering the coupling optical fiber 14 on the fixed support and the coupling support 3.
It should be noted that SN does not represent a sequential order.
The fixed support is fixedly connected to the shell 1, the adjusting device is positioned on the shell 1, and then the acousto-optic fiber 13 is adhered to the acousto-optic pyramid 10 and the fixed support of the movable support mounting table 15; finally, the coupling optical fiber 14 is fixedly connected to the coupling bracket 3. By the packaging method, the positions of the movable support and the acousto-optic pyramid 10 can be conveniently and integrally adjusted, so that the stress of the optical fiber can be adjusted; and through this kind of packaging method, reduced technology degree of difficulty and manufacturing cost.
The adjusting device comprises an elastic part 6, a screw hole structure, a differential screw 12, a spring positioner 7, a movable support sliding block 5 and a movable support mounting table 15, and the specific process of the step S4 comprises the following steps: the elastic piece 6 is connected with one end of the movable support sliding block 5, one end of the differential screw 12 is connected with the other end of the movable support sliding block 5, and the other end of the differential screw 12 is connected with the dustproof fixing frame 4; spring locator 7 fixed connection be in on the casing 1, one side of spring locator 7 with elastic component 6 is connected, move the fixed establishment of support mount table 15 move the upper portion of support slider 5, the screw structure is located move on the support mount table 15, the one end of screw structure before the encapsulation with reputation pyramid 10 swing joint, electric drive interface 9 is located move on the support mount table 15.
Specifically, the fixed support comprises an optical fiber support 2, a coupling support 3 and a dustproof fixing frame 4, the optical fiber support 2 and the dustproof fixing frame 4 are respectively located at two ends of the shell 1, a substrate 11 is arranged on the coupling support 3, and the coupling support 3 and the substrate 11 are fixedly connected through packaging glue such as ultraviolet curing glue; after the coupling support 3 and the substrate 11 are connected, curing is performed by irradiation of an ultraviolet lamp.
The utility model discloses an encapsulation process: during installation, the acousto-optic pyramid 10 is installed on the movable support installation platform 15, the acousto-optic pyramid 10 is installed on a flat iron or stainless steel screw and used for absorbing redundant sound waves, and on the other hand, the height of the acousto-optic pyramid 10 is adjusted by matching the screw hole structure in the movable support installation platform 15 with the screw so that the acousto-optic pyramid is equal to the substrate 11 on the coupling support 3 in height. In the adjusting process, the common optical fiber 8 can be used as a collimation reference, and after the adjustment is finished, the screw glue is fixed.
After the acousto-optic fiber 13 and the acousto-optic pyramid 10 are bonded, the other end of the acousto-optic fiber 13 is bonded to the coupling bracket 3, and it is noted that the acousto-optic fiber 13 needs to meet the condition of being attached to the substrate with low refractive index. Radio frequency signals of acousto-optic pyramid 10 resonance are loaded from an electric drive interface 9, the position of the movable support sliding block 5 is changed through a differential screw 12, so that the stress of the optical fiber is adjusted, and the sinking peak of the working wavelength section is observed on the optical spectrum analyzer, so that the part of bonding is completed. The coupling optical fiber 14 is matched with an additional three-dimensional translation stage to optimize the output light of the coupling optical fiber 14 to an ideal state, and at the moment, the coupling optical fiber 14 and the bonded acousto-optic optical fiber 13 are ensured to be attached to the low-refractive-index substrate 11. And sealing the coupling bracket 3 and the low-refractive-index substrate 11 by using packaging glue such as low-refractive-index ultraviolet curing glue and the like, removing partial coverage of the optical fiber coupling area, and irradiating and curing by using an ultraviolet lamp. The height of the dustproof fixing frame 4 is adjusted, and the tail fiber of the input acousto-optic fiber 13 is smoothly bonded on the dustproof fixing frame. The whole structure is sealed and protected.
The utility model discloses an earlier with deciding support fixed connection in on the casing 1, be located adjusting device on the casing 1, then bond reputation optic fibre 13 on the substrate 11 of reputation pyramid 10 and coupling support 3, with reputation pyramid 10 swing joint in move on the support mounting table 15, with coupling optic fibre 14 fixed connection in on the coupling support 3. By the packaging method, the position of the acousto-optic pyramid 10 can be conveniently adjusted, so that the stress of the optical fiber can be adjusted; and through this kind of packaging method, reduced technology degree of difficulty and manufacturing cost.
While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (7)
1. The packaging structure of the all-fiber coupler comprises a shell and is characterized by also comprising a first packaging structure,
the bracket device comprises a fixed bracket and a movable bracket, and the fixed bracket is fixedly connected with the shell; the movable bracket is movably connected with the shell;
the movable support comprises a movable support sliding block and a movable support mounting table, and the movable support sliding block is positioned below the movable support mounting table and is fixedly connected with the movable support mounting table;
the acousto-optic pyramid is positioned on the movable support mounting table, is movably connected with the movable support mounting table before being packaged, and can adjust the height along the axial direction of the pyramid;
one end of the acousto-optic fiber is connected to the acousto-optic pyramid, and the other end of the acousto-optic fiber is connected to the fixed support;
the electric drive interface is positioned on the movable support mounting table, is fixedly connected with the movable support mounting table and is electrically connected with the acousto-optic pyramid;
the adjusting device is positioned on the shell and connected with the movable support sliding block, and the positions of the movable support sliding block, the acousto-optic pyramid on the movable support mounting table and the electric drive interface can be adjusted through the adjusting device.
2. The package structure of an all-fiber coupler according to claim 1, wherein the adjusting device comprises an elastic member, a screw hole structure and a differential screw, the elastic member is connected to one end of the movable support slider, one end of the differential screw is connected to the other end of the movable support slider, and the other end of the differential screw is fixedly connected to the dust-proof fixing frame; the screw hole structure is positioned on the surface of the movable support mounting table, the acousto-optic pyramid is mounted on the screw hole structure, and the height of the acousto-optic pyramid along the axis direction can be finely adjusted through the screw hole structure before packaging.
3. The package structure of an all-fiber coupler according to claim 2, wherein said adjusting device further comprises a spring retainer, said spring retainer is fixedly connected to said housing, and one side of said spring retainer is connected to said elastic member.
4. The package structure of an all-fiber coupler according to claim 2, wherein the fixed frame comprises a fiber support, a coupling support and a dustproof fixing frame, the fiber support and the dustproof fixing frame are respectively located at two ends of the housing, and the differential screw is fixed to one side of the dustproof fixing frame.
5. The package structure of an all-fiber coupler according to claim 4, wherein a substrate is disposed on the coupling support, and the substrate is made of magnesium fluoride or pdms.
6. The package structure of an all-fiber coupler according to claim 4, further comprising a coupling fiber, wherein the coupling fiber is adhered to the coupling bracket and is adhesively connected to the acousto-optic fiber through an index matching fluid.
7. The package structure of an all-fiber coupler according to claim 1, wherein said housing has a window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120971470.8U CN214669933U (en) | 2021-05-08 | 2021-05-08 | Packaging structure of all-fiber coupler |
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| CN113156672A (en) * | 2021-05-08 | 2021-07-23 | 南开大学 | Packaging structure and packaging method of all-fiber coupler |
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