CN111624707A - Packaging structure and packaging method of fiber bragg grating - Google Patents
Packaging structure and packaging method of fiber bragg grating Download PDFInfo
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- CN111624707A CN111624707A CN202010517505.0A CN202010517505A CN111624707A CN 111624707 A CN111624707 A CN 111624707A CN 202010517505 A CN202010517505 A CN 202010517505A CN 111624707 A CN111624707 A CN 111624707A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/122—Basic optical elements, e.g. light-guiding paths
- G02B6/124—Geodesic lenses or integrated gratings
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- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
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- G02B6/34—Optical coupling means utilising prism or grating
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Abstract
The invention discloses a packaging structure and a packaging method of fiber bragg gratings. The packaging structure of the fiber bragg grating comprises a fiber bragg grating assembly and a bearing structure, the fiber bragg grating assembly comprises a fiber bragg grating, a first connecting piece and a second connecting piece, two ends of the fiber bragg grating are connected with the first connecting piece and the second connecting piece respectively, the first connecting piece is connected with the bearing structure, and the second connecting piece is detachably connected with the bearing structure. The packaging structure and the packaging method of the fiber bragg grating improve the yield of fiber bragg grating packaging and reduce the waste of materials.
Description
Technical Field
The embodiment of the invention relates to the technical field of optical fiber packaging, in particular to a packaging structure and a packaging method of an optical fiber grating.
Background
The fiber grating is an optical fiber with a periodically distributed core refractive index. When a beam of broad spectrum light passes through the fiber grating, the wavelength meeting the fiber grating Bragg condition is reflected, and the rest of the wavelength is transmitted continuously through the fiber grating, so that the broadband wide spectrum light is a narrow-band filter or a reflector, and is widely applied to the fields of fiber communication, fiber sensing and the like.
The fiber grating is very sensitive to temperature, humidity, stress and vibration, and the fiber grating must be packaged to obtain a stable polarization state, precise wavelength and low relative intensity noise. In the conventional packaging method, packaging glue is used for directly fixing two ends of a fiber grating with tension on a support, and then the packaged fiber grating is annealed. In addition, the two ends of the fiber bragg grating which fails in packaging are stuck by the packaging glue and cannot be reused, so that the waste of materials is caused.
Disclosure of Invention
The invention provides a packaging structure and a packaging method of fiber bragg gratings, which are used for improving the yield of fiber bragg grating packaging and reducing the waste of materials.
In a first aspect, an embodiment of the present invention provides a fiber grating package structure, including:
the fiber grating comprises a fiber grating component and a bearing structure;
the fiber grating component comprises a fiber grating, a first connecting piece and a second connecting piece; two ends of the fiber bragg grating are respectively connected with the first connecting piece and the second connecting piece;
the first connecting piece is connected with the bearing structure, and the second connecting piece is detachably connected with the bearing structure.
Optionally, the bearing structure includes a base, a first fixed block and a second fixed block;
a first mounting hole is formed between the base and the first fixed block, a second mounting hole is formed between the base and the second fixed block, the first connecting piece is located in the first mounting hole, and the second connecting piece is located in the second mounting hole;
the base with can dismantle the connection through the screw between the first fixed block, the base with can dismantle the connection through the screw between the second fixed block.
Optionally, the bearing structure further includes a groove structure located between the first mounting hole and the second mounting hole, and the fiber grating is located in the groove structure.
Optionally, the first connecting piece and the second connecting piece are both ferrules; the ferrule includes an inner bore;
the two ends of the fiber bragg grating are respectively connected with the inner hole of the inserting core through glue, or the two ends of the fiber bragg grating are connected with the inner hole of the inserting core through tin soldering.
Optionally, the ferrule is any one of a glass ferrule, a ceramic ferrule and an alloy ferrule.
Optionally, the glue is UV glue or epoxy glue.
Optionally, the bearing structure is a heat sink, and the heat sink is an alloy heat sink or a ceramic heat sink.
Optionally, the fiber grating is any one of a uniform grating, a chirped grating and a phase-shifted fiber grating.
In a second aspect, an embodiment of the present invention further provides a method for packaging a fiber grating, where the method is used to prepare any one of the fiber grating packaging structures described in the first aspect, and the method includes:
step 1, fixedly connecting two ends of the fiber bragg grating with a first connecting piece and a second connecting piece respectively to form a fiber bragg grating assembly;
2, placing the fiber grating assembly into a temperature circulation box for first high-low temperature circulation;
step 3, connecting the first connecting piece with a bearing structure;
step 4, applying stress to two ends of the fiber bragg grating, adjusting the central wavelength of the fiber bragg grating, and detachably connecting the second connecting piece with the bearing structure to form a packaging structure of the fiber bragg grating;
and 5, placing the packaging structure of the fiber grating into a temperature circulating box for second high-low temperature circulation.
Optionally, after placing the package structure of the fiber grating into a temperature cycle box for a second high-low temperature cycle, the method further includes:
and detecting the packaging structure of the fiber bragg grating, if the packaging structure of the fiber bragg grating does not meet the preset requirement, disassembling the second connecting piece and the bearing structure, and repeating the step 4 and the step 5.
According to the packaging structure and the packaging method of the fiber bragg grating provided by the embodiment of the invention, the first connecting piece and the second connecting piece are respectively and fixedly connected to the two ends of the fiber bragg grating to form the fiber bragg grating assembly, the first connecting piece of the fiber bragg grating assembly is connected with the bearing structure, and the second connecting piece is detachably connected with the bearing structure to form the packaging structure of the fiber bragg grating. And through setting up for dismantling between the second connecting piece of fiber grating subassembly and the bearing structure and be connected, if the fiber grating encapsulation fails, can unpack fiber grating subassembly and bearing structure apart and carry out fixed connection again for fiber grating subassembly and bearing structure can reuse, when improving the yields, still reduced the material waste.
Drawings
Fig. 1 is a schematic structural diagram of a package structure of a fiber grating according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a fiber grating assembly according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a base according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a position relationship between a fiber grating assembly and a base according to an embodiment of the present invention;
fig. 5 is a schematic flow chart of a method for packaging a fiber grating according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of a fiber grating package structure according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of a fiber grating assembly according to an embodiment of the present invention, and as shown in fig. 1 and fig. 2, the fiber grating package structure according to the embodiment of the present invention includes a fiber grating assembly 10 and a carrying structure 11, the fiber grating assembly 10 includes a fiber grating 101, a first connecting member 102 and a second connecting member 103, two ends of the fiber grating 101 are respectively connected to the first connecting member 102 and the second connecting member 103, the first connecting member 102 is connected to the carrying structure 11, and the second connecting member 103 is detachably connected to the carrying structure 11.
Specifically, two ends of the fiber grating 101 are respectively and fixedly connected with the first connecting piece 102 and the second connecting piece 103 to form the fiber grating assembly 10, when the fiber grating assembly 10 is formed, annealing or high-low temperature cyclic aging can be performed on the fiber grating assembly 10, and stress generated when the fiber grating 101 is connected with the first connecting piece 102 and the second connecting piece 103 is released, so that long-term stability of the fiber grating assembly 10 is improved. The first connecting piece 102 of the fiber grating assembly 10 is connected with the bearing structure 11, and the second connecting piece 103 is detachably connected with the bearing structure 11 to form a fiber grating packaging structure, so that the packaging structure can be annealed again or aged at high and low temperatures in a circulating manner, and the stress of the fiber grating assembly 10 and the bearing structure 11 in the fixing process is released, so that the long-term stability of the fiber grating packaging structure is improved. The fiber grating assembly 10 is formed by fixedly connecting two ends of the fiber grating 101 with the first connecting piece 102 and the second connecting piece 103 respectively, the fiber grating assembly 10 can be annealed or aged at high and low temperatures in advance to release stress of the fiber grating assembly 10 in advance, the first connecting piece 102 and the second connecting piece 103 of the fiber grating assembly 10 are arranged to be connected with the bearing structure 11 respectively to form a packaging structure of the fiber grating, the packaging structure can be annealed or aged at high and low temperatures again, and stress of the packaging structure of the fiber grating in the assembling process is eliminated twice. And, for can dismantling the connection between the second connecting piece 103 of fiber grating subassembly 10 and bearing structure 11, if the fiber grating encapsulation fails, can unpack fiber grating subassembly 10 and bearing structure 11 apart and carry out fixed connection again for fiber grating subassembly 10 and bearing structure 11 can reuse, when improving the yields, has reduced the material waste.
According to the packaging structure of the fiber bragg grating provided by the embodiment of the invention, the two ends of the fiber bragg grating 101 are respectively and fixedly connected with the first connecting piece 102 and the second connecting piece 103 to form the fiber bragg grating assembly 10, the first connecting piece 102 of the fiber bragg grating assembly 10 is connected with the bearing structure 11, and the second connecting piece 103 is detachably connected with the bearing structure 11 to form the packaging structure of the fiber bragg grating. And through setting up between second connecting piece 103 and the bearing structure 11 of fiber grating subassembly 10 for can dismantle the connection, if the fiber grating encapsulation fails, can unpack fiber grating subassembly 10 and bearing structure 11 apart and carry out fixed connection again for fiber grating subassembly 10 and bearing structure 11 can reuse, when improving the yields, has still reduced the material waste.
Fig. 3 is a schematic structural diagram of a base according to an embodiment of the present invention, and fig. 4 is a schematic positional relationship diagram of a fiber grating assembly and a base according to an embodiment of the present invention, as shown in fig. 1 to 4, optionally, the bearing structure 11 includes a base 111, a first fixing block 112 and a second fixing block 113, a first mounting hole 21 is disposed between the base 111 and the first fixing block 112, a second mounting hole 22 is disposed between the base 111 and the second fixing block 113, the first connecting member 102 is located in the first mounting hole 21, the second connecting member 103 is located in the second mounting hole 33, the base 111 is detachably connected to the first fixing block 112 through a screw 31, and the base 111 is detachably connected to the second fixing block 113 through a screw 31.
Specifically, as shown in fig. 3, mounting positions are provided at both ends of the base 111, and the mounting positions are also provided at corresponding positions of the first fixing block 112 and the second fixing block 113, so that when the base 111 is aligned with the first fixing block 112 and the second fixing block 113, a first mounting hole 21 is formed between the base 111 and the first fixing block 112, and a second mounting hole 22 is formed between the base 111 and the second fixing block 113. When the fiber grating assembly 10 is connected to the carrying structure 11, the first connector 102 is located in the first mounting hole 21, and the second connector 103 is located in the second mounting hole 33. As shown in fig. 1, the base 111 is further provided with screw holes, and the corresponding first fixing block 112 and the second fixing block 113 are also provided with screw holes, the base 111 and the first fixing block 112 are detachably connected by screws 31, and the base 111 and the second fixing block 113 are detachably connected by screws 31, so that the base 111 and the first fixing block 112 clamp the first connecting member 102 located in the first mounting hole 21, and the base 111 and the second fixing block 113 clamp the second connecting member 103 located in the second fixing block 113, thereby achieving the detachable connection of the fiber grating assembly 10 and the bearing structure 11. If the fiber grating packaging fails, the fiber grating component 10 and the bearing structure 11 can be disassembled and fixedly connected again, so that the fiber grating component 10 and the bearing structure 11 can be repeatedly utilized, the yield is improved, and the material waste is reduced.
It should be noted that, in the embodiment of the present invention, by adopting the scheme that the base 111 and the first fixing block 112 are detachably connected through the screw 31, and the base 111 and the second fixing block 113 are detachably connected through the screw 31, if the problem of damage to the bearing structure 11 occurs during the packaging process, the fiber grating assembly 10 can be completely detached from the bearing structure 11, so as to replace the bearing structure 11, thereby further reducing the material waste. In other embodiments, only the second connector 103 and the supporting structure 11 may be detachably connected, and if the fiber grating package fails, only the second connector 103 and the supporting structure 11 need to be detached, so as to readjust the stress at the two ends of the fiber grating assembly 10 for packaging.
In other embodiments, the method of detachable connection is not limited to the manner of the screw 31, and those skilled in the art can adopt other methods of detachable connection according to actual needs.
With continued reference to fig. 1-4, optionally, the carrier structure 11 further includes a groove structure 23 located between the first mounting hole 21 and the second mounting hole 22, and the fiber grating 101 is located in the groove structure 23.
As shown in fig. 3, a groove structure 23 is further disposed between the first mounting hole 21 and the second mounting hole 22 of the supporting structure 11, and when the fiber grating assembly 10 is connected to the supporting structure 11, the fiber grating 101 is accommodated in the groove structure 23, so as to prevent the fiber grating 101 from being dislocated, and protect the fiber grating 101.
With continued reference to fig. 1-4, optionally, the first connecting member 102 and the second connecting member 103 are both ferrules, each ferrule includes an inner hole, and both ends of the fiber grating 101 are respectively connected with the inner holes of the ferrules by glue, or both ends of the fiber grating 101 are connected with the inner holes of the ferrules by soldering.
The first connecting piece 102 and the second connecting piece 103 are arranged to be the inserting core, the inner hole is formed in the inserting core, the two ends of the fiber bragg grating 101 are connected with the inner hole of the inserting core through glue or tin soldering respectively, the connection between the fiber bragg grating 101 and the first connecting piece 102 and the connection between the fiber bragg grating 101 and the second connecting piece 103 are firmer, and the long-term stability of the fiber bragg grating assembly 10 is improved. For example, the two ends of the fiber grating 101 are respectively connected with the inner bores of the ferrules through glue, during the connection process, a proper amount of glue is injected into the inner bores of the two ferrules, and then the two ends of the fiber grating 101 are respectively inserted into the inner bores of the ferrules, so that the positions of the ferrules need to be adjusted, the grating region of the fiber grating 101 is located between the two ferrules, and the distance between the two ferrules matches with the distance between the first mounting hole 21 and the second mounting hole 22 of the bearing structure 11. According to the curing characteristics of the glue used, a proper curing process is selected, so that the fiber bragg grating 101 and the ferrule are firmly connected together through the glue to form the fiber bragg grating assembly 10. The fiber grating assembly 10 is placed in a temperature circulation box for high-temperature and low-temperature circulation so as to release stress in the glue curing process and improve the long-term stability of the fiber grating assembly 10. Wherein, the parameters of the high-low temperature circulation can be set according to the industry standard or the requirement of customers.
Optionally, the ferrule is any one of a glass ferrule, a ceramic ferrule and an alloy ferrule.
The ferrule is any one of a glass ferrule, a ceramic ferrule and an alloy ferrule, so that the strength and the thermal conductivity are high, and the long-term stability of the fiber grating assembly 10 is improved.
Optionally, the glue is UV glue or epoxy glue.
The UV adhesive is also called photosensitive adhesive or ultraviolet curing adhesive, is cured by ultraviolet irradiation, has high curing speed and is beneficial to reducing the packaging time. The epoxy glue is also called epoxy resin and epoxy resin glue, is cured by annealing, has the characteristics of water resistance, chemical corrosion resistance, glittering and translucent property and the like after being cured, is low in price and is beneficial to reducing the packaging cost.
Optionally, the bearing structure 11 is a heat sink, and the heat sink is an alloy heat sink or a ceramic heat sink.
The bearing structure 11 adopts a heat sink (heat sink) which is beneficial to heat dissipation of the packaging structure of the fiber grating, and adopts an alloy heat sink or a ceramic heat sink which has high heat conductivity and is beneficial to rapid heat dissipation.
Optionally, the fiber grating 101 is any one of a uniform grating, a chirped grating, and a phase-shifted fiber grating.
The uniform grating is a short-period reflective grating, and is widely applied to fiber lasers, fiber filters, wavelength division multiplexers/demultiplexer and fiber sensors. The chirp grating has optical period varying along the axial direction of the grating and is used mainly in dispersion compensator, fiber amplifier, pulse compression, amplifying filter, sensor and high power fiber laser in wavelength division multiplexing system. The phase-shifting fiber grating introduces a hopping refractive index at a certain position or a plurality of positions on a common Bragg grating, a phase difference of one refractive index can be generated after one time of hopping, a section of phase-shifting grating is engraved on an active fiber, feedback and wavelength selection can be realized, a laser using the phase-shifting fiber grating has the advantages of narrow line width, low noise and the like, and has potential application values in the aspects of fiber remote sensing, remote fiber communication, high-precision spectrum, fiber sensing systems and the like.
The embodiment of the invention provides a fiber grating packaging structure aiming at the characteristics and application requirements of the fiber grating, and can be beneficial to improving the environmental adaptability of the fiber grating. Wherein, the two ends of the fiber grating 101 are fixedly connected with the ferrule through UV glue or epoxy glue to form the fiber grating assembly 10, and the first connecting piece 102 of the fiber grating assembly 10 is detachably connected with the bearing structure 11 through the screw 31 to form the packaging structure of the fiber grating, thereby the fiber grating packaging mode is improved from the one-step packaging mode of directly connecting the fiber grating with the bearing structure in the prior art to the two-step packaging process of firstly connecting the fiber grating 101 with the ferrule to form the fiber grating assembly 10 and then detachably connecting the fiber grating assembly 10 with the bearing structure 11, the stress in the packaging process can be eliminated by two times of annealing or high-low temperature cyclic aging, compared with the stress of the packaging structure which is eliminated by one-time concentrated annealing in the prior art, the uncertainty is reduced, and the packaging structure which fails to be packaged again, the yield is improved, and meanwhile, the material waste is reduced.
Based on the same inventive concept, an embodiment of the present invention further provides a fiber grating packaging method, which is used to prepare any fiber grating packaging structure provided in the above embodiment, and the explanation of the structure and the terminology which are the same as or corresponding to those in the above embodiment is not repeated herein, and fig. 5 is a schematic flow chart of the fiber grating packaging method provided in the embodiment of the present invention, and as shown in fig. 5, the method includes the following steps:
and step 1, fixedly connecting two ends of the fiber grating with a first connecting piece and a second connecting piece respectively to form a fiber grating assembly.
Illustratively, the first connecting piece and the second connecting piece can adopt inserting cores, two ends of the fiber grating can be fixedly connected with the first connecting piece and the second connecting piece through glue or tin soldering and the like, for example, the glue is injected into inner holes of the two inserting cores, then two ends of the fiber grating are respectively inserted into the inner holes of the inserting cores, the positions of the inserting cores are adjusted, the grid region of the fiber grating is positioned between the two inserting cores, and the distance between the two inserting cores is matched with the distance between the first mounting hole and the second mounting hole of the bearing structure. According to the curing characteristics of the glue, a proper curing process is selected, so that the fiber bragg grating and the inserting core are firmly connected together through the glue to form the fiber bragg grating assembly.
And 2, placing the fiber grating assembly into a temperature circulation box for first high-low temperature circulation.
Wherein, carry out high low temperature circulation through placing the fiber grating subassembly in the temperature cycle incasement to release the stress in the glue curing process, improve the long-term stability of fiber grating subassembly. The parameters of the high and low temperature cycle can be set according to industry standards or customer requirements.
And 3, connecting the first connecting piece with a bearing structure.
The fiber bragg grating assembly is placed on the bearing structure 11, the positions of the first connecting piece and the bearing structure are adjusted, the first connecting piece is located in the first mounting hole, and then the first connecting piece is firmly fixed on the bearing structure.
And 4, applying stress to two ends of the fiber bragg grating, adjusting the central wavelength of the fiber bragg grating, and detachably connecting the second connecting piece with the bearing structure to form a packaging structure of the fiber bragg grating.
According to the technical requirements of the fiber bragg grating, certain stress is applied to the second connecting piece, the axial angle and the tension of the fiber bragg grating are properly adjusted, and then the second connecting piece is firmly fixed on the bearing structure.
And 5, placing the packaging structure of the fiber grating into a temperature circulating box for second high-low temperature circulation.
The packaging structure of the fiber grating is placed in the temperature circulation box to carry out high-low temperature circulation for the second time so as to release stress in the fixing process of the fiber grating component and the bearing structure.
Optionally, after placing the package structure of the fiber grating into a temperature cycle box for a second high-low temperature cycle, the method further includes:
and detecting the packaging structure of the fiber bragg grating, if the packaging structure of the fiber bragg grating does not meet the preset requirement, disassembling the second connecting piece and the bearing structure, and repeating the step 4 and the step 5.
And (3) detecting the performance of the packaging structure of the fiber bragg grating, loosening the second connecting piece in the packaging structure of the fiber bragg grating which does not meet the requirement from the bearing structure, and repeating the step (4) and the step (5) so as to perform packaging again.
According to the packaging method of the fiber bragg grating, provided by the embodiment of the invention, the stress of the packaging structure of the fiber bragg grating in the assembling process is eliminated twice through twice high-low temperature circulation, and compared with the prior art that the stress of the packaging structure is eliminated by concentrating once annealing, the uncertainty is reduced, the improvement of the yield of the packaging structure of the fiber bragg grating is facilitated, and a product with stable performance is obtained. And, for can dismantling the connection between the second connecting piece of fiber grating subassembly and the bearing structure, if fiber grating encapsulation fails, unpack fiber grating subassembly and bearing structure apart and encapsulate again for fiber grating subassembly and bearing structure can reuse, when improving the yields, has reduced the material waste.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. An optical fiber grating package structure, comprising:
the fiber grating comprises a fiber grating component and a bearing structure;
the fiber grating component comprises a fiber grating, a first connecting piece and a second connecting piece; two ends of the fiber bragg grating are respectively connected with the first connecting piece and the second connecting piece;
the first connecting piece is connected with the bearing structure, and the second connecting piece is detachably connected with the bearing structure.
2. The package structure of claim 1, wherein the carrier structure comprises a base, a first mounting block, and a second mounting block;
a first mounting hole is formed between the base and the first fixed block, a second mounting hole is formed between the base and the second fixed block, the first connecting piece is located in the first mounting hole, and the second connecting piece is located in the second mounting hole;
the base with can dismantle the connection through the screw between the first fixed block, the base with can dismantle the connection through the screw between the second fixed block.
3. The package structure of claim 2, wherein the carrier structure further comprises a groove structure between the first mounting hole and the second mounting hole, the fiber grating being located in the groove structure.
4. The package structure of claim 1, wherein the first connector and the second connector are both ferrules; the ferrule includes an inner bore;
the two ends of the fiber bragg grating are respectively connected with the inner hole of the inserting core through glue, or the two ends of the fiber bragg grating are connected with the inner hole of the inserting core through tin soldering.
5. The package structure of claim 4, wherein the ferrule is any one of a glass ferrule, a ceramic ferrule, and an alloy ferrule.
6. The package structure of claim 4, wherein the glue is a UV glue or an epoxy glue.
7. The package structure of claim 1, wherein the carrier structure is a heat sink, and wherein the heat sink is an alloy heat sink or a ceramic heat sink.
8. The package structure of claim 1, wherein the fiber grating is any one of a uniform grating, a chirped grating, and a phase-shifted fiber grating.
9. A method for packaging a fiber grating, which is used for preparing the packaging structure of the fiber grating according to any one of claims 1 to 8, and comprises the following steps:
step 1, fixedly connecting two ends of the fiber bragg grating with a first connecting piece and a second connecting piece respectively to form a fiber bragg grating assembly;
2, placing the fiber grating assembly into a temperature circulation box for first high-low temperature circulation;
step 3, connecting the first connecting piece with a bearing structure;
step 4, applying stress to two ends of the fiber bragg grating, adjusting the central wavelength of the fiber bragg grating, and detachably connecting the second connecting piece with the bearing structure to form a packaging structure of the fiber bragg grating;
and 5, placing the packaging structure of the fiber grating into a temperature circulating box for second high-low temperature circulation.
10. The method for packaging according to claim 9, wherein after the placing the package structure of the fiber grating into a temperature cycle box for the second high and low temperature cycle, the method further comprises:
and detecting the packaging structure of the fiber bragg grating, if the packaging structure of the fiber bragg grating does not meet the preset requirement, disassembling the second connecting piece and the bearing structure, and repeating the step 4 and the step 5.
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| CN114265143A (en) * | 2022-01-10 | 2022-04-01 | 安徽理工大学 | Packaging structure of fiber grating |
| CN115629443A (en) * | 2022-12-07 | 2023-01-20 | 武汉光谷航天三江激光产业技术研究院有限公司 | Packaging structure and packaging method of large-core-diameter high-power fiber grating |
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