CN220455557U - Packaging structure of fiber bragg grating - Google Patents
Packaging structure of fiber bragg grating Download PDFInfo
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- CN220455557U CN220455557U CN202321398031.8U CN202321398031U CN220455557U CN 220455557 U CN220455557 U CN 220455557U CN 202321398031 U CN202321398031 U CN 202321398031U CN 220455557 U CN220455557 U CN 220455557U
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- 239000012790 adhesive layer Substances 0.000 claims description 5
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- 238000000034 method Methods 0.000 description 4
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- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model discloses a packaging structure of an optical fiber grating, which comprises the following components: fiber bragg grating, heat sink structure and piezoceramic assembly; one side of the heat sink structure is provided with a middle groove and a deformable piezoelectric ceramic mounting groove; the middle groove and the piezoelectric ceramic mounting groove are arranged along a first direction; the piezoelectric ceramic component is fixed in the piezoelectric ceramic mounting groove; the fiber bragg grating is respectively positioned in the middle groove and the piezoelectric ceramic component; when voltage is applied to the piezoelectric ceramic component, the piezoelectric ceramic component drives the piezoelectric ceramic mounting groove to deform along the first direction, and the stress state of the fiber bragg grating is controlled. According to the technical scheme provided by the utility model, when voltage is applied to the piezoelectric ceramic component, the piezoelectric ceramic component drives the piezoelectric ceramic mounting groove to deform along the first direction, so that the fiber bragg grating also deforms along the first direction, and the wavelength of light passing through the fiber bragg grating is changed.
Description
Technical Field
The utility model relates to the technical field of optical fiber packaging, in particular to a packaging structure of an optical fiber grating.
Background
Fiber gratings are optical fibers with a periodic distribution of the refractive index of the core. When a beam of light with a broad spectrum passes through the fiber bragg grating, light with the wavelength meeting the Bragg condition of the fiber bragg grating in the light with the broad spectrum is reflected, and the light with the other wavelengths is continuously transmitted through the fiber bragg grating, which is essentially a narrow-band filter or a reflecting mirror, and is widely applied to the fields of fiber communication, fiber sensing and the like.
Fiber gratings are very sensitive to temperature, humidity, stress and vibration, and must be packaged to obtain stable polarization, accurate wavelength and low relative intensity noise. The conventional packaging method is that the fiber bragg grating is fixed in a packaging structure, and then the wavelength of light passing through the fiber bragg grating is changed through high-temperature operation, but the process is complicated, and how to adjust the wavelength of light passing through the fiber bragg grating is realized through the packaging structure is a problem to be solved.
Disclosure of Invention
The utility model provides a packaging structure of a fiber grating, which can modulate the wavelength of light passing through the fiber grating, and has simple structure and strong universality.
In a first aspect, the present utility model provides a package structure of a fiber bragg grating, including: fiber bragg grating, heat sink structure and piezoceramic assembly;
a middle groove and a deformable piezoelectric ceramic mounting groove are formed in one side of the heat sink structure; the middle groove and the piezoelectric ceramic mounting groove are arranged along a first direction;
the piezoelectric ceramic component is fixed in the piezoelectric ceramic mounting groove;
the fiber bragg grating is respectively positioned in the middle groove and the piezoelectric ceramic component, and is fixed on the heat sink structure;
when voltage is applied to the piezoelectric ceramic component, the piezoelectric ceramic component drives the piezoelectric ceramic mounting groove to deform along the first direction, and the stress state of the fiber bragg grating is controlled.
Optionally, the piezoelectric ceramic mounting groove includes a first side wall, a second side wall, a third side wall and a fourth side wall; the first side wall and the second side wall are opposite and arranged along a second direction, and the third side wall and the fourth side wall are opposite and arranged along the first direction; the second direction intersects the first direction;
wherein the first side wall and the second side wall are deformable side walls; in the first direction, the position of the third side wall and/or the fourth side wall is variable.
Optionally, in the first direction, the piezoelectric ceramic component is in interference fit with the piezoelectric ceramic mounting groove.
Optionally, the range of the value of the tolerance Δd of the interference fit is: Δd is more than or equal to 0.05mm and less than or equal to 0.25mm.
Optionally, the piezoelectric ceramic component comprises a plurality of piezoelectric ceramic sheets; and each piezoelectric ceramic piece is arranged along the first direction to form a stack structure.
Optionally, any two adjacent piezoelectric ceramic plates are attached through an adhesive layer.
Optionally, the heat sink structure further includes two fiber bragg grating fixed ends arranged along the first direction and opposite to each other; the piezoelectric ceramic mounting groove and the middle groove are positioned between the two fiber bragg grating fixed ends;
and two ends of the fiber bragg grating are respectively fixed at the fixed ends of the fiber bragg grating.
Optionally, the package structure of the fiber bragg grating further includes: two ferrules;
and two ends of the fiber bragg grating are detachably fixed at the fixed end of the fiber bragg grating through the inserting cores respectively.
Optionally, the heat sink structure includes the base and two cover blocks detachably connected with the base; the piezoelectric ceramic mounting groove, the middle groove and the fiber bragg grating fixed end are respectively arranged in the base;
each covering block arranged on the base covers each ferrule respectively.
Optionally, the piezoelectric ceramic component comprises a narrow slot; the fiber bragg grating is positioned in the narrow groove of the piezoelectric ceramic component;
the central axis of the narrow groove is collinear with the central axis of the middle groove.
According to the technical scheme, the packaging structure provided by the utility model comprises the fiber bragg grating, the heat sink structure and the piezoelectric ceramic component, wherein the middle groove and the deformable piezoelectric ceramic mounting groove are arranged on one side of the heat sink structure, the middle groove and the piezoelectric ceramic mounting groove are arranged along the first direction, the piezoelectric ceramic component is fixed in the piezoelectric ceramic mounting groove, the fiber bragg grating is respectively positioned in the middle groove and the piezoelectric ceramic component, when voltage is applied to the piezoelectric ceramic component, the piezoelectric ceramic component drives the piezoelectric ceramic mounting groove to deform along the first direction, and the fiber bragg grating is further deformed along the first direction so as to change the wavelength of light passing through the fiber bragg grating, and therefore, the purpose of modulating the length of the light passing through the fiber bragg grating can be achieved through the packaging structure of the fiber bragg grating.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, a brief description will be given below of the drawings required for the embodiments or the description of the prior art, and it is obvious that although the drawings in the following description are specific embodiments of the present utility model, it is obvious to those skilled in the art that the basic concepts of the device structure, the driving method and the manufacturing method, which are disclosed and suggested according to the various embodiments of the present utility model, are extended and extended to other structures and drawings, and it is needless to say that these should be within the scope of the claims of the present utility model.
Fig. 1 is a schematic structural diagram of a heat sink structure according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of a package structure of a fiber grating according to an embodiment of the present utility model;
fig. 3 is a schematic structural diagram of a piezoelectric ceramic component according to an embodiment of the present utility model.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described by means of implementation examples with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the basic concepts disclosed and suggested by the embodiments of the present utility model are within the scope of the present utility model.
Fig. 1 is a schematic structural diagram of a heat sink structure provided by an embodiment of the present utility model, and fig. 2 is a schematic structural diagram of a package structure of a fiber bragg grating provided by an embodiment of the present utility model, with reference to fig. 1 and fig. 2 in combination, the package structure of the fiber bragg grating includes: fiber grating 10, heat sink structure 20 and piezoceramic assembly 30; a middle groove 21 and a deformable piezoelectric ceramic mounting groove 22 are arranged on one side of the heat sink structure 20; the middle groove 21 and the piezoelectric ceramic mounting groove 22 are arranged along the first direction X; the piezoelectric ceramic component 30 is fixed in the piezoelectric ceramic mounting groove 22; the fiber bragg grating 10 is respectively positioned in the middle groove 21 and the piezoelectric ceramic component 30, and the fiber bragg grating 10 is fixed on the heat sink structure 20; when a voltage is applied to the piezoelectric ceramic component 30, the piezoelectric ceramic component 30 drives the piezoelectric ceramic mounting groove 22 to deform along the first direction X, and the stress state of the fiber bragg grating 10 is controlled.
The fiber bragg grating 10 has the characteristics of small volume, small welding loss, good wavelength selectivity, no nonlinear effect, easy connection of an optical fiber system, convenient use and maintenance, and the like. The heat sink structure 20 may be made of a material having a certain hardness and impact resistance, for example, aluminum alloy or ceramic, and is not particularly limited herein. The piezoelectric ceramic element 30 has piezoelectric, dielectric, elastic, etc. characteristics, and can convert electric energy and mechanical energy into each other. The fiber bragg grating 10 may be directly fixed on the heat sink structure 20, or may be indirectly fixed on the heat sink structure 20 through a fixing structure, or may be other, and may be set according to actual needs, which is not limited herein.
Specifically, the middle groove 21 of the heat sink structure 20 is used for placing the fiber bragg grating, the deformable piezoceramic mounting groove 22 is used for placing and fixing the piezoceramic assembly 30, and the middle groove 21 and the piezoceramic mounting groove 22 are arranged along the first direction X, for example, the piezoceramic mounting groove 22 is disposed on the right side of the middle groove 21; the piezoceramic package 30 includes through holes or grooves in which the fiber bragg grating 10 may be placed such that the fiber bragg grating 10 is positioned within the central groove 21 and the piezoceramic package 30, respectively. The piezoelectric ceramic element 30 has a characteristic of self-polarization, and when a voltage is applied to the piezoelectric ceramic element 30, the polarization intensity of the piezoelectric ceramic is affected. When an external electric field identical to the self-polarization is applied to the piezoelectric ceramic assembly 30, the polarization intensity can be enhanced, so that the piezoelectric ceramic assembly 30 is elongated in the polarization direction; accordingly, when an external electric field opposite to the self-polarization is applied to the piezoelectric ceramic assembly 30, the polarization intensity can be reduced, so that the piezoelectric ceramic assembly 30 is shortened in the polarization direction. Since the piezoelectric ceramic mounting groove 22 is deformable and the piezoelectric ceramic component 30 is fixed in the piezoelectric ceramic mounting groove 22, when the piezoelectric ceramic component 30 is deformed, the piezoelectric ceramic mounting groove 22 is driven to deform along the first direction X (polarization direction), and at this time, the length of the whole heat sink structure 20 in the first direction X is extended, and since the fiber grating 10 is fixed on the heat sink structure 20, the length of the fiber grating 10 is synchronously extended, resulting in an increase or decrease in the period of the fiber grating 10, so that the wavelength of the light passing through the fiber grating 10 is shortened or increased, and the wavelength of the light passing through the fiber grating is modulated.
In an alternative embodiment, referring to fig. 1 and 3 in combination, the piezoceramic assembly 30 includes a narrow slot 33; the fiber bragg grating 10 is positioned in the narrow groove 33 of the piezoelectric ceramic component 30; the central axis of the narrow slot 33 is collinear with the central axis of the intermediate slot 21.
The narrow groove 33 is used for placing the fiber bragg grating 10, the middle groove 21 is also used for placing the fiber bragg grating 10, and the dimensions of the narrow groove 33 and the middle groove 21 are related to the dimensions of the fiber bragg grating 10, and may be designed according to actual needs, and are not specifically limited herein. In an exemplary embodiment, the fiber grating 10 has a diameter of 0.3mm and the narrow grooves 33 and the medium grooves 21 have a width of 0.5 to 1mm. By making the central axis of the narrow groove 33 and the central axis of the middle groove 21 collinear, the levelness of the fiber grating 10 can be improved when the fiber grating 10 is placed in the narrow groove 33 and the middle groove 21, the fiber grating 10 is prevented from being inclined or contacting the groove body to cause damage, and the reliability and the stability of the fiber grating 10 are improved.
It should be understood that, the above description has been given by taking the example in which the piezoelectric ceramic mounting groove 22 is provided on the right side of the middle groove 21 along the first direction X, and the piezoelectric ceramic mounting groove 22 may also be provided on the left side of the middle groove 21 along the first direction X, which is not particularly limited herein.
According to the technical scheme provided by the embodiment of the utility model, the packaging structure provided with the fiber bragg grating comprises the fiber bragg grating, the heat sink structure and the piezoelectric ceramic component, wherein one side of the heat sink structure is provided with the middle groove and the deformable piezoelectric ceramic mounting groove, the middle groove and the piezoelectric ceramic mounting groove are arranged along the first direction, the piezoelectric ceramic component is fixed in the piezoelectric ceramic mounting groove, the fiber bragg grating is respectively positioned in the middle groove and the piezoelectric ceramic component, and when voltage is applied to the piezoelectric ceramic component, the piezoelectric ceramic component drives the piezoelectric ceramic mounting groove to deform along the first direction, so that the fiber bragg grating also deforms along the first direction to change the wavelength of light passing through the fiber bragg grating, and therefore, the purpose of modulating the wavelength of the light passing through the fiber bragg grating can be achieved through the packaging structure of the fiber bragg grating.
Alternatively, referring to fig. 1, the piezoceramic mounting groove 22 includes a first sidewall 221, a second sidewall 222, a third sidewall 223, and a fourth sidewall 224; the first and second sidewalls 221 and 222 are opposite and aligned in the second direction Y, and the third and fourth sidewalls 223 and 224 are opposite and aligned in the first direction X; the second direction Y intersects the first direction X.
Wherein, the first sidewall 221 and the second sidewall 222 are deformable sidewalls; the position of the third side wall 223 and/or the fourth side wall 224 is variable in the first direction X.
Specifically, the surfaces of the first sidewall 221 and the second sidewall 222 are both curved surfaces, and the curved surfaces may include at least two non-coplanar first surfaces and second surfaces; when no voltage is applied to the piezoelectric ceramic component 30, the first surface and the second surface of each bending surface form a smaller included angle with the first direction X, and the included angle may be, for example, greater than 0 degrees and less than 90 degrees; the third side wall 223 is connected with the first side wall 221 and the second side wall 222, and the fourth side wall 224 is connected with the first side wall 221 and the second side wall 222, so that when a voltage is applied to the piezoceramic assembly 30 to deform the piezoceramic assembly in the first direction X, the first side wall 221 and the second side wall 222 in the piezoceramic mounting groove 22 can be driven to deform, so that an included angle formed by the first surface and the second surface in the first side wall 221 and the second side wall 222 in the first direction X is increased or reduced, the third side wall 223 and/or the fourth side wall 224 are moved in the first direction X, the position of the third side wall 223 and/or the fourth side wall 224 is changed, the distance between the third side wall 223 and the fourth side wall 224 can be increased or reduced, the whole heat sink structure 20 can be increased or shortened along the length of the first direction X, the deformation amount of the fiber grating 10 is changed, and the purpose of modulating the wavelength of light passing through the fiber grating 10 is achieved.
It will be appreciated that the greater the thickness of each sidewall, the greater the force required to produce the same amount of deflection for each sidewall, and correspondingly, the lesser the thickness of each sidewall, the less the force required to produce the same amount of deflection for each sidewall, and the thickness of each sidewall may be designed according to actual needs and is not particularly limited herein, and in an exemplary embodiment, the thickness of each sidewall is 1cm.
In an alternative embodiment, the piezoceramic assembly 30 is an interference fit with the piezoceramic mounting groove 22 in the first direction X.
The interference fit expands and deforms the hole or the groove by utilizing the elastic characteristics of the elastic material, at the moment, devices such as a shaft to be assembled are placed in the hole or the groove, and fastening force is generated on the devices such as the shaft when the elastic material is restored, so that the hole and the shaft are fastened and connected.
Specifically, the piezoelectric ceramic mounting groove 22 is made of ase:Sub>A deformable elastic material, the width of the piezoelectric ceramic mounting groove 22 along the first direction X is ase:Sub>A when no elastic deformation occurs, the length of the piezoelectric ceramic assembly 30 along the first direction X is B when no voltage is applied, the interference fit needs B > ase:Sub>A, the tolerance Δd=b-ase:Sub>A, the tolerance Δd is related to parameters such as the material of the piezoelectric ceramic mounting groove 22, and the value range of Δd can be set according to actual needs, which is not limited herein. Optionally, the tolerance Δd of the interference fit has a range of values: Δd is more than or equal to 0.05mm and less than or equal to 0.25mm. During installation, a bench vice or other tools can be used for clamping two sides of the piezoelectric ceramic mounting groove 22, the piezoelectric ceramic mounting groove 22 can slightly deform, the width of the piezoelectric ceramic mounting groove 22 along the first direction X is increased, when the width of the piezoelectric ceramic mounting groove 22 along the first direction X is larger than the length of the piezoelectric ceramic assembly 30 along the first direction X, the piezoelectric ceramic assembly 30 is placed into the piezoelectric ceramic mounting groove 22, then the clamping tools are loosened, and the shape of the piezoelectric ceramic mounting groove 22 is recovered under the action of self elasticity so as to firmly clamp the piezoelectric ceramic assembly 10. The interference fit has the characteristics of simple structure, good centering, high bearing capacity, high vibration resistance, high impact resistance and the like, and can improve the connection tightness between the piezoelectric ceramic component 30 and the piezoelectric ceramic mounting groove 22 and improve the reliability of the piezoelectric ceramic component 30.
In an alternative embodiment, fig. 3 is a schematic structural diagram of a piezoelectric ceramic assembly according to an embodiment of the present utility model, and as shown in fig. 3, a piezoelectric ceramic assembly 30 includes a plurality of piezoelectric ceramic sheets 31; the piezoelectric ceramic plates 31 are arranged in the first direction X to form a stack structure. Specifically, the piezoelectric ceramic plates 31 can convert electric energy into mechanical energy, after a voltage is applied to a single piezoelectric ceramic plate 31, parameters such as deformation displacement generated are small, and after a plurality of piezoelectric ceramic plates 31 are stacked in sequence to form a stack structure, driving voltage can be reduced, mechanical characteristics can be improved, when pretightening force is fixed, the stack structure can generate larger force and displacement, the displacement range of the piezoelectric ceramic assembly 30 can be expanded, and the wavelength range of light passing through the fiber bragg grating 10 is further expanded.
Optionally, any two adjacent piezoelectric ceramic plates 31 are bonded by an adhesive layer 32. The adhesive layer 32 includes a gel such as epoxy resin. In this way, two adjacent piezoelectric ceramic plates 31 are attached through the adhesive layer 32, so that the piezoelectric ceramic plates 31 are fastened and connected, the problem that any two or more piezoelectric ceramic plates 31 are separated after stacking is completed is avoided, and the stability of a stacking structure is improved.
In an alternative embodiment, referring to fig. 1, the heat sink structure 20 further includes two fiber bragg grating fixed ends 25 aligned and opposite along the first direction X; the piezoelectric ceramic mounting groove 22 and the middle groove 21 are positioned between the two fiber bragg grating fixing ends 25; both ends of the fiber grating 10 are respectively fixed to the fiber grating fixed ends 25.
The shape and size of the fiber bragg grating fixed end 25 are related to the size and shape of the fiber bragg grating 10, and may be set according to actual needs, which is not particularly limited herein. In an exemplary embodiment, the fiber grating fixed end 25 is in the shape of an arc-shaped slot, having a length of 5cm, a width of 1cm, and a depth of 1cm.
Specifically, two ends of the fiber bragg grating 10 are respectively fixed on the heat sink structure 30 through fiber bragg grating fixing ends 25 at two sides of the heat sink structure 20, and the fiber bragg grating 10 placed in the middle of the middle groove 21 and the piezoelectric ceramic component 30 is in a suspension state. In this way, the fiber grating 10 is fixed on the heat sink structure 20 through the two fiber grating fixing ends 25, so that when the heat sink structure 20 deforms along the first direction X, the fiber grating 10 fixed on the heat sink structure 20 also deforms by the same amount along the first direction X, and the wavelength of the light passing through the fiber grating 10 is changed.
Optionally, referring to fig. 2, the package structure of the fiber bragg grating further includes: two ferrules 11; both ends of the fiber grating 10 are detachably fixed to the fiber grating fixing ends 25 through the ferrules 11, respectively.
The fiber bragg grating 10 may be fixed to the ferrule 11 by an adhesive, or may be fixed by a fixing method such as soldering, which is not particularly limited herein. The two ends of the fiber bragg grating 10 are detachably fixed to the fiber bragg grating fixing end 25 through the ferrule 11, and the fiber bragg grating may be detachably fixed by a screw, or may be other, which is not particularly limited herein. The detachable fixing mode is used for taking out the group of fiber gratings 10 through the detachable fixing mode after the group of fiber gratings 10 are modulated, putting another group of fiber gratings 10 needing to modulate the wavelength of light into the group of fiber gratings 10, and modulating the wavelength of the light passing through the fiber gratings 10 after the group of fiber gratings 10 are fixed through the detachable fixing mode.
Specifically, since the fiber bragg grating 10 is susceptible to temperature and stress, if the fiber bragg grating 10 is directly adhered or fixed to the heat sink structure 20 without being fixed by the ferrule 11 or other rigid materials, damage is caused to the fiber bragg grating 10, so that two ends of the fiber bragg grating 10 are respectively fixed by the two ferrules 11, and then the two ferrules 11 are fixed to the two fiber bragg grating fixing ends 25, thereby improving stability and reliability of the fiber bragg grating 10 while indirectly fixing the fiber bragg grating 10 to the heat sink structure 20.
Alternatively, referring to fig. 1 and 2 in combination, the heat sink structure 20 includes a base 23 and two cover blocks 24 detachably connected to the base 23; the piezoelectric ceramic mounting groove 22, the middle groove 21 and the fiber bragg grating fixed end 25 are respectively arranged in the base 23; the respective covering blocks 24 provided on the base 23 cover the respective ferrules 11.
Specifically, after the piezoelectric ceramic component 30 is placed on the base 23 in an interference fit manner, two ends of the fiber bragg grating 10 can be detachably fixed on the fiber bragg grating fixed end 25 through the inserting cores 11, then two covering blocks 24 are respectively covered on the two inserting cores 11, two step holes 241 included in each covering block 24 and threaded holes 251 included in the heat sink structure 20 corresponding to the step holes 214 are formed, the covering blocks 24 are fixed on the heat sink structure 20 through screws, and each covering block 24 covers each inserting core 11 to form a packaging structure of the fiber bragg grating, so that the purpose of modulating the wavelength of light passing through the fiber bragg grating can be achieved.
Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements, combinations, and substitutions can be made by those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.
Claims (10)
1. A package structure of an optical fiber grating, comprising: fiber bragg grating, heat sink structure and piezoceramic assembly;
a middle groove and a deformable piezoelectric ceramic mounting groove are formed in one side of the heat sink structure; the middle groove and the piezoelectric ceramic mounting groove are arranged along a first direction;
the piezoelectric ceramic component is fixed in the piezoelectric ceramic mounting groove;
the fiber bragg grating is respectively positioned in the middle groove and the piezoelectric ceramic component, and is fixed on the heat sink structure;
when voltage is applied to the piezoelectric ceramic component, the piezoelectric ceramic component drives the piezoelectric ceramic mounting groove to deform along the first direction, and the stress state of the fiber bragg grating is controlled.
2. The package structure of the fiber bragg grating of claim 1, wherein said piezoceramic mounting groove comprises a first sidewall, a second sidewall, a third sidewall and a fourth sidewall; the first side wall and the second side wall are opposite and arranged along a second direction, and the third side wall and the fourth side wall are opposite and arranged along the first direction; the second direction intersects the first direction;
wherein the first side wall and the second side wall are deformable side walls; in the first direction, the position of the third side wall and/or the fourth side wall is variable.
3. The package structure of the fiber bragg grating according to claim 1, wherein the piezoceramic package is an interference fit with the piezoceramic mounting groove in the first direction.
4. The package structure of the fiber bragg grating according to claim 3, wherein the tolerance Δd of the interference fit has a range of values: Δd is more than or equal to 0.05mm and less than or equal to 0.25mm.
5. The package structure of the fiber bragg grating of claim 1, wherein said piezoelectric ceramic component comprises a plurality of piezoelectric ceramic pieces; and each piezoelectric ceramic piece is arranged along the first direction to form a stack structure.
6. The package structure of the fiber bragg grating according to claim 5, wherein any two adjacent piezoelectric ceramic plates are bonded by an adhesive layer.
7. The package structure of fiber bragg grating of claim 1, wherein said heat sink structure further comprises two fiber bragg grating fixed ends aligned and opposite along a first direction; the piezoelectric ceramic mounting groove and the middle groove are positioned between the two fiber bragg grating fixed ends;
and two ends of the fiber bragg grating are respectively fixed at the fixed ends of the fiber bragg grating.
8. The package structure of a fiber grating according to claim 7, further comprising: two ferrules;
and two ends of the fiber bragg grating are detachably fixed at the fixed end of the fiber bragg grating through the inserting cores respectively.
9. The package structure of fiber bragg grating of claim 8, wherein said heat sink structure comprises a base and two cover blocks removably connected to said base; the piezoelectric ceramic mounting groove, the middle groove and the fiber bragg grating fixed end are respectively arranged in the base;
each covering block arranged on the base covers each ferrule respectively.
10. The package structure of the fiber bragg grating of claim 1, wherein said piezoceramic package comprises a narrow groove; the fiber bragg grating is positioned in the narrow groove of the piezoelectric ceramic component;
the central axis of the narrow groove is collinear with the central axis of the middle groove.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321398031.8U CN220455557U (en) | 2023-06-02 | 2023-06-02 | Packaging structure of fiber bragg grating |
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| CN202321398031.8U CN220455557U (en) | 2023-06-02 | 2023-06-02 | Packaging structure of fiber bragg grating |
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