Temperature-controllable anti-jitter fiber bragg grating packaging structure

Abstract

The utility model discloses a temperature-controllable anti-shake fiber bragg grating packaging structure, which comprises a heat conduction sleeve, a heat conduction piece, a TEC temperature control device, an insertion core and an external packaging device, a fiber bragg grating assembly penetrates through the inside of the heat conduction sleeve, and the space between the inside of the heat conduction sleeve and the fiber bragg grating assembly is filled with the heat conduction piece. The TEC temperature control device is attached to the side face of the heat conduction sleeve, the insertion cores are arranged at the two ends of the heat conduction sleeve, the insertion cores are fixedly connected with the part, extending out of the heat conduction sleeve, of the fiber grating assembly, the outer packaging sleeve is arranged on the outer side of the heat conduction sleeve in a sleeving mode, and the heat dissipation face of the TEC temperature control device is connected with the inner side face of the outer packaging sleeve through a heat conduction piece. According to the utility model, the problems of temperature control and vibration isolation of fiber bragg grating packaging are solved, the temperature of the fiber bragg grating assembly can be accurately controlled, and the fiber bragg grating assembly has good vibration isolation and anti-shake effects.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber gratings, and in particular to a temperature-controllable and anti-shake optical fiber grating packaging structure capable of locking wavelength. Background Art

[0002] The statements in this section merely provide background technical information related to the present application and do not necessarily constitute prior art.

[0003] Fiber Bragg grating is a diffraction grating formed by axially periodically modulating the refractive index of the fiber core through a certain method. It is also a section of fiber whose core refractive index changes periodically. Therefore, fiber Bragg grating has the advantages of small size, small fusion loss, full compatibility with optical fiber, and anti-electromagnetic interference. However, its central wavelength and spectrum half-width are easily affected by external environment such as temperature, deformation, refractive index, humidity, etc., especially when used in picosecond, femtosecond and other ultrafast fiber lasers, the pulse width is particularly sensitive to the change of spectrum half-width. When used in 1064nm fiber-solid hybrid amplified laser, since the emission spectrum of Nd at 1064nm is relatively narrow, in order to ensure the amplification efficiency of the solid amplifier, the central wavelength of the fiber Bragg grating and the emission peak of the Nd-doped crystal are required to have a high matching degree. Therefore, when the fiber Bragg grating is used in the laser, it must be packaged in order to obtain a stable central wavelength, spectrum half-width, polarization state, etc.

[0004] At present, the conventional packaging method of fiber Bragg grating is generally to use gel to package the fiber Bragg grating, and then anneal, high and low temperature cycle, to eliminate the stress generated in the fiber packaging process [CN 111624707A]. Although this method solves the problem of low yield rate and material waste of fiber Bragg grating packaging, the packaged fiber Bragg grating is still susceptible to the external environment. Patent [CN 103887688 A] uses seven layers of soft and hard overlapping materials such as U-shaped tubes, silicone grease or silicone oil, and metal sleeves to package the fiber Bragg grating, achieving ordinary vibration isolation, sound insulation, and temperature insulation. It is used in distributed feedback fiber lasers. The fiber Bragg grating of this type of laser itself generates less heat, so the use of a quartz glass tube with a low thermal conductivity in the middle has little effect on this type of laser, but it is difficult to play a role in temperature control when used in ordinary fiber lasers with a certain amount of heat.

[0005] In view of this, how to solve the problems existing in the existing fiber grating packaging method, such as being easily affected by the external environment and being difficult to control the temperature, has become a topic to be studied and solved by the present utility model. Utility Model Content

[0006] The utility model aims to provide a temperature-controllable and anti-shake optical fiber grating packaging structure.

[0007] To achieve the above-mentioned purpose, the utility model proposes a temperature-controllable anti-shake fiber grating packaging structure, which is used for the packaging of a fiber grating component. The fiber grating component has a bare optical fiber and a coating layer coated on the outside of the bare optical fiber. The fiber grating packaging structure includes a heat-conducting sleeve, a heat-conducting part, a TEC temperature control device, a core, and an external packaging device.

[0008] The heat-conducting sleeve is a columnar hollow structure, the fiber grating assembly passes through the inside of the heat-conducting sleeve, the space between the inside of the heat-conducting sleeve and the fiber grating assembly is filled with the heat-conducting member, and a section of the fiber grating assembly inside the heat-conducting sleeve is a fiber grating grating area.

[0009] The TEC temperature control device is attached to the side of the thermal sleeve and has a temperature control surface and a heat dissipation surface. The temperature control surface is arranged to at least cover the position corresponding to the fiber grating area on the outer surface of the thermal sleeve.

[0010] The insert is arranged at two ends of the heat-conducting sleeve, and the insert is fixedly connected to the portion of the fiber grating assembly extending out of the heat-conducting sleeve.

[0011] The external packaging device includes an external packaging sleeve, which is a columnar hollow structure and is sleeved on the outside of the heat-conducting sleeve. The heat dissipation surface of the TEC temperature control device is connected to the inner side of the external packaging sleeve through a heat-conducting member.

[0012] The relevant contents of this utility model are explained as follows:

[0013] 1. In the above technical scheme of the utility model, in view of the problems that the existing fiber Bragg grating packaging methods are easily affected by the external environment and difficult to play the role of temperature control, a temperature-controllable and anti-shake fiber Bragg grating packaging structure is developed and designed. The fiber Bragg grating packaging structure is designed to use a heat-conducting sleeve, a heat-conducting part, a TEC temperature control device, a core, and an external packaging device to package the fiber Bragg grating component, thereby solving the temperature control and vibration isolation problems of the fiber Bragg grating; wherein, the fiber Bragg grating component is passed through the heat-conducting sleeve with a columnar hollow structure, and the space between the inside of the heat-conducting sleeve and the fiber Bragg grating component is filled with the heat-conducting part, so that the heat generated by the fiber Bragg grating component during operation can be fully transferred to the temperature control surface of the heat-conducting sleeve by the heat-conducting part. , and because the temperature control surface of the TEC temperature control device is arranged to at least cover the position corresponding to the fiber grating area on the outer surface of the heat-conducting sleeve, most of the heat generated by the fiber grating area can be absorbed by the temperature control surface of the TEC temperature control device, and the heat dissipation surface of the TEC temperature control device is fixedly connected to the inner side of the outer packaging sleeve, so that the fiber grating component can be accurately controlled in temperature; and a core is used, and the core is fixedly connected to the part of the fiber grating component extending out of the heat-conducting sleeve, and the fiber grating component itself has been filled with the heat-conducting member inside the heat-conducting sleeve, so that the core, the heat-conducting sleeve, and the fiber grating component are well sealed and fixed, so as to play a good role in vibration isolation and anti-shake.

[0014] 2. In the above technical solution, the interior of the heat-conducting sleeve is a cylindrical hollow structure, the outer side of the heat-conducting sleeve is a rectangular structure parallel to the inner cylindrical central axis, and the interfaces at both ends of the heat-conducting sleeve are square structures perpendicular to the inner cylindrical central axis. This structure allows the fiber Bragg grating assembly to be better installed in the heat-conducting hollow hole of the cylindrical hollow structure, and allows the heat-conducting parts (thermal conductive silicone) to be evenly arranged and filled in the gap between the inside of the heat-conducting sleeve and the fiber Bragg grating assembly. At the same time, the TEC temperature control device is better connected to the outer surface of the heat-conducting sleeve, and the contact area between the empty surface of the TEC temperature control device and the outer surface of the heat-conducting sleeve is increased, thereby facilitating the assembly of the fiber Bragg grating assembly and the TEC temperature control device and improving the heat exchange efficiency.

[0015] 3. In the above technical solution, the heat-conducting sleeve is a metal sleeve made of red copper or copper with good thermal conductivity.

[0016] 4. In the above technical solution, the temperature control surface of the TEC temperature control device is a rectangular or square structure, the length and width of the temperature control surface are smaller than the length and width of the outer side of the heat-conducting sleeve, the length of the temperature control surface is greater than or equal to the length of the fiber grating area, and the thickness of the temperature control surface is greater than 8mm. This structural design allows the TEC temperature control device to be better connected to the outer surface of the heat-conducting sleeve. The length and width of the temperature control surface of the TEC temperature control device can be designed to allow multiple TEC temperature control devices to be evenly installed on the periphery of the heat-conducting sleeve without interference, and the temperature control surface of the TEC temperature control device can completely cover the area corresponding to the fiber grating area, thereby improving the heat exchange efficiency.

[0017] 5. In the above technical solution, the heat-conducting sleeve, the outer package sleeve, and the TEC temperature control device are all rectangular parallelepiped structures, the interior of the outer package sleeve is a rectangular parallelepiped hollow structure, the number of the TEC temperature control devices is four, and the four inner sides of the outer package sleeve are respectively connected to the heat dissipation surfaces of the four TEC temperature control devices. That is, there is an outer sealed hollow hole, and the heat-conducting sleeve with four TEC temperature control devices is installed in the outer sealed hollow hole. With this structural design, the square heat-conducting sleeve and the four TEC temperature control devices are better sealed and fixed by the outer package sleeve, ensuring the stability and reliability of the overall structure, and the heat-conducting sleeve and the four TEC temperature control devices do not deviate when working.

[0018] 6. In the above technical solution, the external packaging device also includes a front panel and a rear panel disposed at both ends of the external packaging sleeve, and the front panel and the rear panel have perforations for the insertion core to pass through, so that the thermal sleeve and the TEC temperature control device can be better sealed and fixed by the front panel, the rear panel and the external packaging sleeve as a whole. The front panel, the rear panel and the external packaging sleeve can be connected by fastening screws.

[0019] 7. In the above technical solution, rubber rings are provided at the connection points between the front panel, the rear panel and the end faces of the outer packaging sleeve to ensure sealing.

[0020] 8. In the above technical solution, the heat-conducting member is made of thermally conductive silicone. Thermally conductive silicone grease has good thermal conductivity and poor fluidity, which can better support and prevent shaking of the fiber grating assembly and improve heat exchange efficiency.

[0021] 9. In the above technical solution, the ferrule is a glass ferrule, a ceramic ferrule or a metal ferrule, so that the ferrule can be better fixed and sealed with the fiber optic grating assembly, the thermal sleeve, the front panel and the rear panel.

[0022] 10. In the above technical solution, the core insert and the portion of the fiber grating assembly extending out of the thermal sleeve are fixed by connecting solder or UV curing adhesive, and the core insert is fixed at both ends of the columnar hollow structure inside the thermal sleeve. The core insert and the thermal sleeve are fixed by UV curing adhesive, so as to better fix them and have sealing properties.

[0023] 11. In this utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] 12. In the present utility model, the terms "center", "upper", "lower", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientation or positional assembly relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application; if the manual pressure relief valve is turned upside down or placed horizontally, the corresponding orientation should also be adjusted accordingly.

[0025] 13. In the present invention, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0026] 14. In addition, the term "and / or" in this application means three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution in which both A and B are satisfied.

[0027] Due to the application of the above scheme, the utility model has the following advantages and effects compared with the prior art:

[0028] 1. The above scheme of the utility model aims at the problems that the existing fiber Bragg grating packaging methods are easily affected by the external environment and difficult to control the temperature. A temperature-controllable and anti-shake fiber Bragg grating packaging structure is developed and designed. The fiber Bragg grating packaging structure is designed to use a heat-conducting sleeve, a heat-conducting part, a TEC temperature control device, a core, and an external packaging device to package the fiber Bragg grating component, thereby solving the temperature control and vibration isolation problems of the fiber Bragg grating.

[0029] 2. In the above scheme of the utility model, the fiber Bragg grating assembly is passed through the heat-conducting sleeve with a cylindrical hollow structure, and the space between the inside of the heat-conducting sleeve and the fiber Bragg grating assembly is filled with heat-conducting parts, so that the heat generated by the fiber Bragg grating assembly during operation can be completely transferred to the temperature control surface of the heat-conducting sleeve by the heat-conducting parts. Moreover, since the temperature control surface of the TEC temperature control device is arranged to at least cover the position corresponding to the fiber Bragg grating area on the outer surface of the heat-conducting sleeve, most of the heat generated by the fiber Bragg grating area can be absorbed by the temperature control surface of the TEC temperature control device. The heat dissipation surface of the TEC temperature control device is then fixedly connected to the inner side surface of the outer packaging sleeve, thereby accurately controlling the temperature of the fiber Bragg grating assembly.

[0030] 3. The above scheme of the utility model also uses a core insert, which is fixedly connected to the part of the fiber grating assembly extending out of the heat-conducting sleeve. The fiber grating assembly itself and the inside of the heat-conducting sleeve are filled with the heat-conducting member, so that the core insert, the heat-conducting sleeve and the fiber grating assembly are well sealed and fixed, thereby playing a good role in vibration isolation and anti-shake.

[0031] 4. In summary, the utility model solves the temperature control and vibration isolation problems of fiber Bragg grating packaging, can accurately control the temperature of the fiber Bragg grating component, and also has a good vibration isolation and anti-shake effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the assembly of the temperature-controllable and anti-shake fiber Bragg grating packaging structure according to an embodiment of the utility model;

[0033] Figure 2 It is a schematic diagram of the connection and cooperation between the heat-conducting sleeve and the TEC temperature control device in the embodiment of the utility model;

[0034] Figure 3 A schematic diagram of a heat-conducting sleeve in an embodiment of the utility model;

[0035] Figure 4 This is a schematic diagram of a TEC temperature control device in an embodiment of the utility model;

[0036] Figure 5 This is a schematic diagram of an outer packaging sleeve in an embodiment of the utility model;

[0037] Figure 6It is a schematic diagram of the front panel / rear panel in an embodiment of the utility model.

[0038] The various parts of the above drawings are shown as follows:

[0039] 1 Fiber Bragg Grating Components

[0040] 2 Thermal sleeve

[0041] 21. Heat-conducting hollow hole

[0042] 3. Heat Conductor

[0043] 4 TEC temperature control device

[0044] 41 Temperature Control Noodles

[0045] 42 Heat dissipation surface

[0046] 5 Insert

[0047] 6 External packaging device

[0048] 61 Outer packaging sleeve

[0049] 611 Externally sealed hollow hole

[0050] 62 Front Panel

[0051] 63 Rear Panel

[0052] 64 Perforation

[0053] 65 Rubber ring. DETAILED DESCRIPTION

[0054] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0055] The utility model aims to solve the problems existing in the existing fiber grating packaging mode, such as being easily affected by the external environment and being difficult to control temperature, so as to provide a temperature-controllable and anti-shake fiber grating packaging structure.

[0056] Examples, such as Figures 1 to 6 As shown, an embodiment of the utility model discloses a temperature-controllable anti-shake fiber grating packaging structure, which is used for the packaging of a fiber grating component 1, wherein the fiber grating component 1 has a bare optical fiber and a coating layer coated on the outside of the bare optical fiber, and the fiber grating packaging structure includes a heat-conducting sleeve 2, a heat-conducting part 3, a TEC temperature control device 4, a core 5, and an external packaging device 6.

[0057] The heat-conducting sleeve 2 is a columnar hollow structure, the fiber grating assembly 1 passes through the inside of the heat-conducting sleeve 2, the space between the inside of the heat-conducting sleeve 2 and the fiber grating assembly 1 is filled with the heat-conducting member 3, and a section of the fiber grating assembly 1 inside the heat-conducting sleeve 2 is a fiber grating grating area.

[0058] The TEC temperature control device 4 is attached to the side of the thermal sleeve 2 , and has a temperature control surface 41 and a heat dissipation surface 42 . The temperature control surface 41 is arranged to at least cover the position corresponding to the fiber grating area on the outer surface of the thermal sleeve 2 .

[0059] The ferrule 5 is disposed at both ends of the heat-conducting sleeve 2 , and the ferrule 5 is fixedly connected to the portion of the fiber grating assembly 1 extending out of the heat-conducting sleeve 2 .

[0060] The external packaging device 6 includes an external packaging sleeve 61, which is a columnar hollow structure. The external packaging sleeve 61 is sleeved on the outside of the thermal conductive sleeve 2, and the heat dissipation surface 42 of the TEC temperature control device 4 is connected to the inner side of the external packaging sleeve 61 through the heat conductive member 3.

[0061] Through the implementation of the embodiment of the utility model, the fiber Bragg grating packaging structure is designed to use a heat-conducting sleeve 2, a heat-conducting member 3, a TEC temperature control device 4, a core 5, and an external packaging device 6 to package the fiber Bragg grating component 1, thereby solving the fiber Bragg grating temperature control and vibration isolation problems; wherein, the fiber Bragg grating component 1 is passed through the heat-conducting sleeve 2 with a columnar hollow structure, and the space between the inside of the heat-conducting sleeve 2 and the fiber Bragg grating component 1 is filled with the heat-conducting member 3, so that the heat generated by the fiber Bragg grating component 1 during operation can be fully transferred to the temperature control surface 41 of the heat-conducting sleeve 2 by the heat-conducting member 3, and because the temperature control surface 41 of the TEC temperature control device 4 is arranged to at least cover the outer surface of the heat-conducting sleeve 2 At the position corresponding to the fiber Bragg grating area on the side, most of the heat generated by the fiber Bragg grating area can be absorbed by the temperature control surface 41 of the TEC temperature control device 4, and the heat dissipation surface 42 of the TEC temperature control device 4 is fixedly connected to the inner side of the outer packaging sleeve 61, so that the fiber Bragg grating component 1 can be accurately temperature controlled; and a core insert 5 is also used, and the core insert 5 is fixedly connected to the portion of the fiber Bragg grating component 1 extending out of the heat-conducting sleeve 2, and the fiber Bragg grating component 1 itself has been filled with the heat-conducting member 3 between the heat-conducting sleeve 2, so that the core insert 5, the heat-conducting sleeve 2, and the fiber Bragg grating component 1 are well sealed and fixed, so as to play a good role in vibration isolation and anti-shake.

[0062] In the embodiment of the utility model, the interior of the heat-conducting sleeve 2 is a cylindrical hollow structure, the outer side of the heat-conducting sleeve 2 is a rectangular structure parallel to the inner cylindrical central axis, and the interfaces at both ends of the heat-conducting sleeve 2 are square structures perpendicular to the inner cylindrical central axis. With this structure, the fiber grating assembly 1 is better installed in the heat-conducting hollow hole 21 of the cylindrical hollow structure, and the heat-conducting member 3 (heat-conducting silica gel) is evenly arranged and filled in the gap between the inside of the heat-conducting sleeve 2 and the fiber grating assembly 1, and the TEC temperature control device 4 is better connected to the outer surface of the heat-conducting sleeve 2, and the contact area between the empty surface of the TEC temperature control device 4 and the outer surface of the heat-conducting sleeve 2 is increased, so as to facilitate the assembly of the fiber grating assembly 1 and the TEC temperature control device 4, and improve the heat exchange efficiency. Optionally, the heat-conducting sleeve 2 is a metal sleeve, which is made of red copper or red copper and has good thermal conductivity.

[0063] In the embodiment of the utility model, the temperature control surface 41 of the TEC temperature control device is a rectangular or square structure, the length and width of the temperature control surface 41 are smaller than the length and width of the outer side of the heat-conducting sleeve 2, the length of the temperature control surface 41 is greater than or equal to the length of the fiber grating grating area, and the thickness of the temperature control surface 41 is greater than 8mm. This structural design allows the TEC temperature control device 4 to be better connected to the outer surface of the heat-conducting sleeve 2. The length and width of the temperature control surface 41 of the TEC temperature control device 4 can not only satisfy the requirement that multiple TEC temperature control devices 4 are evenly installed on the peripheral side of the heat-conducting sleeve 2 without interference, but also allow the temperature control surface 41 of the TEC temperature control device 4 to completely cover the area corresponding to the fiber grating grating area, thereby improving the heat exchange efficiency.

[0064] In the embodiment of the utility model, the heat-conducting sleeve 2, the outer package sleeve 61, and the TEC temperature control device are all rectangular parallelepiped structures, the interior of the outer package sleeve 61 is a rectangular parallelepiped hollow structure, the number of the TEC temperature control devices is four, and the four inner sides of the outer package sleeve 61 are respectively connected to the heat dissipation surfaces 42 of the four TEC temperature control devices. That is, there is an outer sealed hollow hole 611, and the heat-conducting sleeve 2 with four TEC temperature control devices is installed in the outer sealed hollow hole 611. With this structural design, the square heat-conducting sleeve 2 and the four TEC temperature control devices are better sealed and fixed by the outer package sleeve 61, ensuring the stability and reliability of the overall structure, and the heat-conducting sleeve 2 and the four TEC temperature control devices do not deviate when working.

[0065] In an embodiment of the utility model, the external packaging device 6 also includes a front panel 62 and a rear panel 63 disposed at both ends of the external packaging sleeve 61, and the front panel 62 and the rear panel 63 have a through hole 64 for the ferrule 5 to pass through, so that the thermal sleeve 2 and the TEC temperature control device are better sealed and fixed as a whole by the front panel 62, the rear panel 63 and the external packaging sleeve 61. The front panel 62, the rear panel 63 and the external packaging sleeve 61 can be connected by fastening screws. Specifically, a rubber ring 65 is provided at the end surface connection of the front panel 62, the rear panel 63 and the external packaging sleeve 61 to ensure sealing.

[0066] In the embodiment of the utility model, the heat-conducting member 3 is made of thermally conductive silicone. The thermally conductive silicone grease has good thermal conductivity and poor fluidity, and can better support and prevent the fiber grating assembly 1, thereby improving the heat exchange efficiency. In the embodiment of the utility model, the core ferrule 5 is a glass core ferrule 5, a ceramic core ferrule 5 or a metal core ferrule 5, so that the core ferrule 5 can be better fixed and sealed with the fiber grating assembly 1, the thermal sleeve 2, the front panel 62, and the rear panel 63. Furthermore, the core ferrule 5 and the portion of the fiber grating assembly 1 extending out of the thermal sleeve 2 are fixed by connecting solder or ultraviolet curing glue, and the core ferrule 5 is fixed at both ends of the columnar hollow structure inside the thermal sleeve 2. The core ferrule 5 and the thermal sleeve 2 are fixed by ultraviolet curing glue, so as to be better fixed and have good sealing performance.

[0067] Next, the present invention will be specifically described with reference to a detailed embodiment.

[0068] A temperature-controllable and anti-shake fiber Bragg grating packaging structure involved in a detailed embodiment of the utility model is used for packaging a fiber Bragg grating component 1. The fiber Bragg grating packaging structure includes a heat-conducting sleeve 2, a heat-conducting member 3, a TEC temperature control device 4, a core insert 5, and an external packaging device 6.

[0069] Optionally, the fiber grating assembly 1 comprises a bare optical fiber with a periodically changed core and a coating layer composed of a polymer;

[0070] Optionally, the metal sleeve has a cylindrical structure inside, the diameter of the cylinder is 20 microns larger than the outer diameter of the insert 5, the four outer faces parallel to the central axis of the inner cylinder are rectangular structures, referred to as the side faces of the metal sleeve, and the two faces perpendicular to the central axis of the inner cylinder are square structures, referred to as the cross-section, and the metal sleeve is made of a metal with good thermal conductivity, such as red copper, copper, etc.;

[0071] Optionally, the silicone grease has good thermal conductivity and poor fluidity, and is filled in the cylindrical structure inside the metal sleeve, and the fiber grating component 1 passes through the internal component of the metal sleeve;

[0072] Optionally, the ferrule 5 is one of a glass ferrule 5, a ceramic ferrule 5 or a metal ferrule 5, the epitaxial optical fiber portion of the fiber grating assembly 1 passes through the ferrule 5, the epitaxial optical fiber and the ferrule 5 are fixed by soldering or UV curing adhesive, the ferrule 5 is fixed at both ends of the cylindrical structure inside the metal sleeve, and the ferrule 5 and the metal sleeve are fixed by UV curing adhesive;

[0073] Optionally, the UV curing glue can be quickly cured by UV lamp irradiation, and plays a role of sealing and fixing between the epitaxial optical fiber and the ferrule 5, and plays a role of fixing and sealing between the ferrule 5 and the cylindrical structure inside the metal sleeve;

[0074] Optionally, the temperature control surface 41 of the TEC temperature control device is a rectangular or square structure, with a length and width smaller than the length and width of the side surface of the metal sleeve assembly, a length greater than or equal to the length of the fiber grating region, and a thickness greater than 8 mm; one surface of the TEC temperature control device is attached to a side surface of the metal sleeve, and the fiber grating region is within the length of the TEC temperature control device, silicone grease with good thermal conductivity is used at the joint between the temperature control surface 41 of the TEC temperature control device and the metal sleeve assembly, and the edge of the temperature control surface 41 of the TEC temperature control device is fixed to the metal sleeve assembly using the UV curing glue or soldering; there are four TEC temperature control devices in total, corresponding to the four surfaces of the metal sleeve respectively; the power supply and control lines of the TEC temperature control device are led out separately, using a parallel structure, and are bundled into a bundle and then led out through the packaging structure;

[0075] Optionally, the packaging structure includes two rubber rings 65, two cover plates with holes in the middle and a hollow tube with a rectangular structure, wherein the cover plate and the hollow tube with a rectangular structure are connected by fastening screws, and in order to ensure the sealing, the cover plate and the hollow tube are connected by a rubber ring 65 in the middle; the four side surfaces of the hollow tube with a rectangular structure are respectively connected to the four TEC heat dissipation surfaces 42 with silicone grease, and the four edges of the four TEC heat dissipation surfaces 42 are respectively fixed and sealed with UV curing glue; the hole punched in the cover plate with a hole in the middle is circular, and the diameter of the circle is 20 microns larger than the outer diameter of the core 5.

[0076] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A temperature-controllable anti-shake fiber Bragg grating packaging structure, used for packaging a fiber Bragg grating component (1), wherein the fiber Bragg grating component (1) comprises a bare fiber and a coating layer coated on the outside of the bare fiber, characterized in that: The fiber grating packaging structure comprises a heat-conducting sleeve (2), a heat-conducting member (3), a TEC temperature control device (4), a core insert (5), and an external packaging device (6); The heat-conducting sleeve (2) is a columnar hollow structure, the fiber grating assembly (1) passes through the inside of the heat-conducting sleeve (2), the space between the inside of the heat-conducting sleeve (2) and the fiber grating assembly (1) is filled with the heat-conducting member (3), and a section of the fiber grating assembly (1) inside the heat-conducting sleeve (2) is a fiber grating grating area; The TEC temperature control device (4) is attached to the side of the heat-conducting sleeve (2), and the TEC temperature control device (4) has a temperature control surface (41) and a heat dissipation surface (42), and the temperature control surface (41) is arranged to at least cover the position corresponding to the fiber grating area on the outer surface of the heat-conducting sleeve (2); The insert (5) is arranged at both ends of the heat-conducting sleeve (2), and the insert (5) is fixedly connected to the portion of the fiber optic grating assembly (1) extending out of the heat-conducting sleeve (2); The external packaging device (6) comprises an external packaging sleeve (61), which is a columnar hollow structure. The external packaging sleeve (61) is sleeved on the outside of the heat-conducting sleeve (2), and the heat dissipation surface (42) of the TEC temperature control device (4) is fixedly connected to the inner side surface of the external packaging sleeve (61).

2. The temperature-controllable anti-shake fiber Bragg grating packaging structure according to claim 1, characterized in that: The interior of the heat-conducting sleeve (2) is a cylindrical hollow structure, the outer side surface of the heat-conducting sleeve (2) is a rectangular structure parallel to the central axis of the internal cylinder, and the interfaces at both ends of the heat-conducting sleeve (2) are square structures perpendicular to the central axis of the internal cylinder.

3. The temperature-controllable anti-shake fiber Bragg grating packaging structure according to claim 2, characterized in that: The heat-conducting sleeve (2) is a metal sleeve, and its material is red copper or copper.

4. The temperature-controllable and anti-shake fiber Bragg grating packaging structure according to claim 2, characterized in that: The temperature control surface (41) of the TEC temperature control device is a rectangular or square structure, the length and width of the temperature control surface (41) are smaller than the length and width of the outer side surface of the heat-conducting sleeve (2), the length of the temperature control surface (41) is greater than or equal to the length of the fiber grating region, and the thickness of the temperature control surface (41) is greater than 8 mm.

5. The temperature-controllable and anti-shake fiber Bragg grating packaging structure according to claim 2, characterized in that: The heat-conducting sleeve (2), the outer packaging sleeve (61) and the TEC temperature control device are all rectangular parallelepiped structures. The interior of the outer packaging sleeve (61) is a rectangular parallelepiped hollow structure. There are four TEC temperature control devices. The four inner side surfaces of the outer packaging sleeve (61) are respectively connected to the heat dissipation surfaces (42) of four TEC temperature control devices via heat-conducting components (3).

6. The temperature-controllable and anti-shake fiber Bragg grating packaging structure according to claim 1, characterized in that: The external packaging device (6) further comprises a front panel (62) and a rear panel (63) disposed at both ends of the external packaging sleeve (61); the front panel (62) and the rear panel (63) have a through hole (64) for the insertion core (5) to pass through.

7. The temperature-controllable and anti-shake fiber Bragg grating packaging structure according to claim 6, characterized in that: A rubber ring (65) is provided at the connection between the end surfaces of the front panel (62), the rear panel (63) and the outer packaging sleeve (61).

8. The temperature-controllable and anti-shake fiber Bragg grating packaging structure according to claim 1, characterized in that: The heat conducting member (3) is made of heat conducting silica gel.

9. The temperature-controllable and anti-shake fiber Bragg grating packaging structure according to claim 1, characterized in that: The ferrule (5) is a glass ferrule (5), a ceramic ferrule (5) or a metal ferrule (5).

10. The temperature-controllable and anti-shake fiber Bragg grating packaging structure according to claim 1, characterized in that: The core insert (5) and the portion of the optical fiber grating assembly (1) extending out of the heat-conducting sleeve (2) are fixed by connecting solder or ultraviolet curing glue, and the core insert (5) is fixed at both ends of the columnar hollow structure inside the heat-conducting sleeve (2), and the core insert (5) and the heat-conducting sleeve (2) are fixed by ultraviolet curing glue.

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