A packaging structure suitable for microcavity and fiber taper coupling

Abstract

The application discloses a packaging structure suitable for micro-cavity and fiber taper coupling, which comprises a shell (1), a base (2), a micro-cavity clamp (4) and a fiber taper support (9) packaged in the shell (1). The base (2) is arranged at the bottom of the shell (1), the micro-cavity clamp (4) is installed at the front of the base (2) through a front and rear horizontal adjusting and clamping mechanism of the micro-cavity clamp, a micro-cavity installation straight rod (6) is arranged to move forward and backward in a horizontal clamping groove (41) of the micro-cavity clamp (4) and is locked through a locking mechanism, the position of the micro-cavity installation straight rod (6) in the horizontal direction is coarsely adjusted, the micro-cavity is fixed on the micro-cavity installation straight rod (6), the fiber taper support (9) is installed at the rear of the base (2) through a left and right horizontal-vertical adjusting mechanism of the fiber taper support, and a fiber taper (7) is bonded on the fiber taper support (9). The packaging structure can be suitable for various types of micro-cavities and can adjust the coupling state in a large range.

Description

Technical Field

[0001] This invention relates to the field of mechanical structure technology, and to a packaging structure suitable for coupling microcavities and fiber optic tapers in the field of optical device technology. Background Technology

[0002] An optical microcavity, or simply microcavity, is an optical device that confines light to a tiny space for a long period of time through resonant cycles. Among them, whispering-gallery mode (WGM) microcavities have many advantages such as high Q value, long photon lifetime, and small mode size, and have been widely used in many fields such as optical sensing, lasers, nonlinear optics, and optical frequency combs.

[0003] Currently, the main methods used to couple millimeter-scale microcavities include fiber taper coupling, free-space optical coupling, fiber tip coupling, and prism coupling. Among these, fiber taper coupling has the highest coupling efficiency and is the most commonly used microcavity coupling method. However, fiber tapers are very fragile and have poor stability, limiting the practical application of microcavities. While current mainstream encapsulation methods for coupling microcavities with fiber tapers have improved the stability of the coupling system to some extent, most of these methods are only applicable to a single type of microcavity and do not allow for adjustable coupling states, making it difficult to meet the coupling requirements of microcavities in various application scenarios.

[0004] In the laboratory, 3D precision coupling platforms are generally used to achieve precise 3D position adjustment during the coupling process. However, 3D precision moving platforms that can achieve the accuracy required for experimental and engineering applications are expensive and bulky, which hinders their promotion and application.

[0005] In view of this, the present invention is hereby proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a packaging structure suitable for coupling microcavities and fiber tapers, which can be applied to various types of microcavities and can also adjust the relative positions of the microcavities and fiber tapers in three dimensions to adjust the coupling state over a wide range.

[0007] The objective of this invention is achieved through the following technical solution:

[0008] A packaging structure suitable for coupling microcavities and fiber tapers includes a housing 1 and a base 2, a microcavity clamp 4 and a fiber taper support 9 encapsulated within the housing 1.

[0009] The base 2 is located at the bottom of the housing 1. The microcavity clamp 4 is installed at the front of the base 2 through a microcavity clamp front-to-back horizontal adjustment clamping mechanism. The microcavity clamp 4 includes a horizontal clamping groove 41 in the front-to-back direction. The microcavity mounting rod 6 is located in the horizontal clamping groove 41 and moves back and forth and is locked by a locking mechanism. The front-to-back position of the microcavity mounting rod 6 in the horizontal direction is coarsely adjusted. The microcavity is fixed on the microcavity mounting rod 6.

[0010] The fiber optic taper bracket 9 is installed at the rear of the base 2 via a left-right horizontal-vertical adjustment mechanism; the fiber optic tap 7 is bonded to the fiber optic taper bracket 9.

[0011] The microcavity clamping fixture front and rear horizontal adjustment clamping mechanism includes a front and rear horizontal adjustment mechanism and a clamping mechanism; the clamping mechanism clamps the microcavity clamping fixture 4 and is mounted on the moving part of the front and rear horizontal adjustment mechanism.

[0012] The aforementioned front-to-back horizontal adjustment mechanism includes a movable block 13 as a moving component and a front-to-back horizontal adjustment bolt 14; the movable block 13 is disposed in the cavity of the base 2 and is floatingly connected to the base 2 through a flexible connector 131; the front-to-back horizontal adjustment bolt 14 passes through a threaded hole in the front-to-back direction on the outer edge of the front side of the base 2 of the cavity, and its inner end contacts the movable block 13 to finely adjust the front-to-back position of the movable block 13 in the horizontal direction.

[0013] The clamping mechanism includes a fixed slot 5 and a clamping bolt 11; the fixed slot 5 is located on the moving part of the front and rear horizontal adjustment mechanism; the micro-cavity clamp 4 is located in the front and rear through slot of the fixed slot 5 and is clamped by the lateral clamping bolt 11.

[0014] The optical fiber taper bracket's left-right horizontal-vertical adjustment mechanism includes a left-right horizontal adjustment mechanism and a vertical adjustment mechanism; the left-right horizontal adjustment mechanism is mounted on the moving part of the vertical adjustment mechanism.

[0015] The vertical adjustment mechanism includes an annular support 3, a cantilever plate 31, and a vertical adjustment bolt assembly;

[0016] The annular support 3 is installed at the rear of the base 2; the cantilever plate 31 is located inside the annular support 3, and its fixed end is connected to the front frame of the annular support 3; the vertical adjustment bolt group is located at the rear of the annular support 3 and presses against the cantilever end of the cantilever plate 31 from the top and bottom, so as to finely adjust the tilt angle of the cantilever plate 31 and thus finely adjust the height position of the fiber optic taper bracket 9.

[0017] The left and right horizontal adjustment mechanism includes a left and right elongated hole 91 and a vertical locking screw 18 on the fiber optic taper bracket 9. The vertical locking screw 18 locks the fiber optic taper bracket 9 to the moving part of the vertical adjustment mechanism through the elongated hole 91 and adjusts the left and right position.

[0018] The locking mechanism includes a cantilever clamping block formed by a longitudinal U-shaped through groove 42 that passes through the horizontal clamping groove 41 on one side. The cantilever clamping block is deformed and locked by a horizontal locking screw 10 to install the straight rod 6 in the micro-cavity.

[0019] The microcavity forms include crystal cavities, quartz rod cavities, or glass material microcavities; the microcavity shapes include spherical, disk-shaped, cylindrical, V-shaped, or bottle-neck-shaped.

[0020] The materials of the housing 1, base 2, microcavity clamp 4, fiber optic taper support 9, the front and rear horizontal adjustment clamping mechanism of the microcavity clamp, and the left and right horizontal-vertical adjustment mechanism of the fiber optic taper support include stainless steel, aluminum, aluminum alloy, copper, copper alloy, and / or rigid plastic.

[0021] Compared with existing technologies, the packaging structure provided by this invention for microcavity-fiber taper coupling is applicable to various types of microcavities and allows for wide adjustment of the coupling state. It significantly improves the stability of microcavity-fiber taper coupling and offers advantages such as low cost, small size, and portability, making it suitable for microcavity applications. It achieves three-dimensional adjustment of the relative position between the taper fiber and the microcavity, thus enabling adjustable coupling. This coupling method can replace a 3D precision coupling platform without encapsulation in a sealed box, effectively solving the problems of high cost and large size associated with using 3D precision coupling platforms. Depending on requirements, suitable coupling core components can be encapsulated in a sealed box. This sealed box, designed according to the coupling core and used in conjunction with the coupling core components, ensures the long-term stability of the microcavity-fiber taper coupling system, thereby meeting the stable coupling requirements of microcavities in various application scenarios. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the packaging structure suitable for coupling microcavity and fiber taper provided in the embodiments of the present invention. Figure 1 ;

[0024] Figure 2 A schematic diagram of the packaging structure suitable for coupling microcavity and fiber taper provided in the embodiments of the present invention. Figure 2 ;

[0025] Figure 3 A schematic diagram of the front and rear horizontal adjustment mechanism and base structure of the packaging structure suitable for microcavity and fiber taper coupling provided in an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of a microcavity fixture and clamping mechanism for a packaging structure suitable for microcavity and fiber taper coupling provided in an embodiment of the present invention. Figure 1 ;

[0027] Figure 5 A schematic diagram of a microcavity fixture and clamping mechanism for a packaging structure suitable for microcavity and fiber taper coupling provided in an embodiment of the present invention. Figure 2 ;

[0028] Figure 6 A schematic diagram of the vertical adjustment mechanism structure for a packaging structure suitable for microcavity and fiber taper coupling provided in an embodiment of the present invention. Figure 1 ;

[0029] Figure 7 A schematic diagram of the vertical adjustment mechanism structure for a packaging structure suitable for microcavity and fiber taper coupling provided in an embodiment of the present invention. Figure 2 ;

[0030] Figure 8 This is a schematic diagram of the left and right horizontal adjustment mechanism of the packaging structure suitable for coupling microcavity and fiber optic taper provided in an embodiment of the present invention. Detailed Implementation

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the specific content of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments, which do not constitute a limitation of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0032] First, the following explanations are provided for the terms that may be used in this article:

[0033] The term "and / or" means that either or both can be achieved simultaneously. For example, X and / or Y means that it includes both "X" or "Y" as well as the three cases of "X and Y".

[0034] The terms “including,” “comprising,” “containing,” “having,” or other similar semantic descriptions should be interpreted as non-exclusive inclusion. For example, “including a technical feature element (such as raw material, component, ingredient, carrier, dosage form, material, size, part, component, mechanism, device, step, process, method, reaction conditions, processing conditions, parameter, algorithm, signal, data, product or article of manufacture, etc.)” should be interpreted as including not only the expressly listed technical feature element, but also other technical feature elements that are not expressly listed and are well-known in the art.

[0035] The term "composed of" excludes any technical features not expressly listed. When used in a claim, it closes the claim to exclude all technical features other than those expressly listed, except for associated conventional impurities. If the term appears only in a clause of a claim, it limits the claim to the elements expressly listed in that clause; elements recited in other clauses are not excluded from the overall claim.

[0036] Unless otherwise explicitly specified or limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this document according to the specific circumstances.

[0037] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” and “counterclockwise” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience and simplification of description and do not imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this document.

[0038] The following is a detailed description of the packaging structure for microcavity and fiber taper coupling provided by this invention. Contents not described in detail in the embodiments of this invention are prior art known to those skilled in the art. Where specific conditions are not specified in the embodiments of this invention, they should be performed according to conventional conditions in the art or conditions recommended by the manufacturer. Reagents or instruments used in the embodiments of this invention, unless otherwise specified by the manufacturer, are all commercially available conventional products.

[0039] Example

[0040] like Figures 1 to 8 As shown, this embodiment of the invention provides a packaging structure suitable for coupling a microcavity and a fiber taper 7, used to encapsulate the microcavity and the fiber taper 7. The structure includes a housing 1 and a base 2, a microcavity clamp 4, and a fiber taper support 9 encapsulated within the housing 1; as shown... Figure 1 As shown, the housing 1 adopts an encapsulated shell structure, and the coupling core component is encapsulated inside the housing 1. The coupling core component includes three parts: the base 2, the microcavity clamp 4, and the fiber taper support 9, all of which are encapsulated inside the housing 1.

[0041] like Figure 2As shown, the base 2 is located at the bottom inside the housing 1 and is fixed to the housing 1, which can be secured with screws. The microcavity clamp 4 is mounted on the front of the base 2 via a microcavity clamp front-to-back horizontal adjustment clamping mechanism. Here, the front-to-back horizontal direction refers to... Figure 2 The y-direction in the example. Specifically, the microcavity fixture front and rear horizontal adjustment clamping mechanism in this example includes a front and rear horizontal adjustment mechanism and a clamping mechanism; the clamping mechanism clamps the microcavity fixture 4 and is mounted on the moving part of the front and rear horizontal adjustment mechanism, that is, on the moving block 13 mentioned below.

[0042] In this example, as Figure 3 As shown, the front and rear horizontal adjustment mechanism includes a flexible module 13 as a moving part and a front and rear horizontal adjustment bolt 14; the flexible module 13 can achieve precise adjustment of the front and rear horizontal position of the flexible module and its fixed connecting parts (mainly microcavities) through the horizontal adjustment bolt 14.

[0043] In this example, the movable block 13 is located in the cavity of the base 2 and is floatingly connected to the base 2 via a flexible connector 131. In this example, the movable block 13 and the flexible connector 131 are integral with the base 2. Through machining (such as milling) or laser processing, a portion of the material is cut away from the base to create a square-wave curved slit, forming a hollow structure. The four corners form the flexible connector 131. The square-wave curved cross-section of the flexible connector 131 has a certain degree of elasticity, allowing it to undergo elastic deformation under load while supporting the movable block 13; this is called flexibility. This connection method achieves the suspended state of the base 2 and is called a floating connection. Of course, the flexible connector 131 can also use elastic materials such as springs or rubber to achieve a floating connection. The specific structure can be designed by those skilled in the art, and all such designs are within the scope of this patent and will not be elaborated further.

[0044] The front-to-back horizontal adjustment bolt 14 passes through the threaded hole in the front-to-back direction on the outer edge of the base 2, and its inner end is connected to the moving block 13. Tightening the front-to-back horizontal adjustment bolt 14 applies force to the moving block 13, causing a slight deformation in the flexible connector 131, which allows for fine adjustment of the front-to-back horizontal position of the moving block 13. This, in turn, fine-tunes the front-to-back horizontal position of the clamping mechanism fixed on the moving block 13; thus, it achieves fine-tuning of the front-to-back horizontal position of the microcavity clamp 4 held on the clamping mechanism, and consequently, fine-tuning of the front-to-back horizontal position of the microcavity clamped on the microcavity clamp 4. In short, it achieves fine-tuning of the front-to-back position and precise adjustment in the y-direction.

[0045] like Figure 4 and 5As shown, the microcavity fixture 4 includes a horizontal clamping groove 41 in the front-to-back direction. A microcavity mounting rod 6 is positioned within the horizontal clamping groove 41, moving back and forth and locked in place by a locking mechanism. The front-to-back position of the microcavity mounting rod 6 in the horizontal direction is coarsely adjusted. The microcavity is fixed to the microcavity mounting rod 6; specifically, the microcavity can be bonded to the microcavity mounting rod 6 using adhesive bonding. The microcavity types mentioned here include crystal cavities, quartz rod cavities, or glass material microcavities; the microcavity shapes include spherical, disc-shaped, cylindrical, V-shaped, or bottle-neck-shaped. Any form and shape of microcavity is protected within the scope of this patent, as long as the bonding and fixing requirements are met.

[0046] In this example, the horizontal clamping groove 41 has a U-shaped cross-section with a semi-circular lower surface. The groove depth is greater than the radius of the microcavity mounting rod 6. This means that the axis of the microcavity mounting rod 6 must be below the upper surface of the microcavity clamp 4 to ensure it is securely clamped. The locking mechanism includes a cantilever clamping block 43 formed by a longitudinal U-shaped through groove 42 extending through the horizontal clamping groove 41 on one side. The cantilever clamping block 43 refers to the part inside the U-shape shown in the figure. The horizontal locking screw 10 causes the cantilever clamping block to deform, reducing the gap in the U-shaped through groove 42 at the horizontal clamping groove 41, thus locking the microcavity mounting rod 6. The thickness of the cantilever clamping block 43 can be designed according to the required deformation for locking. In the figure, the horizontal locking screw 10 is not screwed in. When locking, it needs to be sunk into the micro-cavity clamp 4. The cantilever clamp 43 is a through hole, and the fixed clamp 44 on the opposite side is a threaded hole. Tighten the horizontal locking screw 10, and the cantilever clamp 43 deforms to lock the micro-cavity mounting rod 6.

[0047] Of course, the locking mechanism here can be any structure with a locking function; even a simple locking screw will suffice. This is well-known technology and will not be elaborated further.

[0048] The dimensions of the horizontal clamping groove 41 are required to ensure that the microcavity mounting rod 6 can be easily inserted into the horizontal clamping groove 41 to adjust the position of the microcavity on the y-axis, and to fix the microcavity mounting rod 6 with the side horizontal locking screw 10.

[0049] like Figure 4 and 5 As shown, the clamping mechanism includes a fixed slot 5 and a clamping bolt 11; the fixed slot 5 is disposed on the moving part of the front and rear horizontal adjustment mechanism; specifically, it can be fixed to the flexible module 13 or the moving block 13 by the clamping mechanism fixing bolt 12. The micro-cavity clamp 4 is disposed in the front and rear through groove of the fixed slot 5 and is clamped and fixed by the lateral clamping bolt 11.

[0050] like Figure 2As shown, the fiber optic taper bracket 9 is mounted to the rear of the base 2 via a left-right horizontal-vertical adjustment mechanism; specifically, it is fixed with bolts. The left-right horizontal-vertical adjustment mechanism includes a left-right horizontal adjustment mechanism and a vertical adjustment mechanism; the left-right horizontal adjustment mechanism is mounted on the moving part of the vertical adjustment mechanism. Here, the left-right horizontal direction refers to... Figure 2 The x-direction in this context refers to the perpendicular direction. Figure 2 The z-direction in the equation.

[0051] like Figure 6 and 7 As shown, the vertical adjustment mechanism includes an annular support 3, a cantilever plate 31, and a vertical adjustment bolt assembly 15; the annular support 3 is installed at the rear of the base 2; specifically, it is fixed by bolts. The cantilever plate 31 is disposed inside the annular support 3, and the fixed end of the cantilever plate 31 is connected to the front frame of the annular support 3; specifically, it is connected and fixed using a flexible connection method, such as... Figure 7 As shown, in this example, the cantilever plate 31 and the annular support 3 are an integral structure. The bottom surface of the annular support 3 is a hollow structure, that is, through slots are opened in the left, right and rear directions to form a U-shaped slit, forming a cantilever structure with only the front fixed end connected. It can deform under the force of the cantilever end to achieve a flexible connection. At the same time, the thickness of the cantilever plate 31 of the cantilever structure is thinner than the thickness of the annular support 3 around the perimeter. The thickness of the connection part between the cantilever plate 31 and the annular support 3 is thinner than the thickness of the cantilever plate 31 and the annular support 3 on both the front and rear sides. That is, through slots 33 are opened as shown in the figure, which is conducive to deformation. The thinner the thickness of the cantilever and the connection part, the larger the adjustable height range. The specific dimensions are processed according to actual needs.

[0052] The vertical adjustment bolt assembly is located at the rear of the annular support 3, pressing against the cantilever end of the cantilever plate 31 from the top and bottom. Specifically, a fastener 8 is provided, which is fixed to the rear of the annular support 3 by bolts. A threaded hole is vertically opened at the middle position of the fastener 8. With the use of the vertical adjustment bolt assembly, the tilt angle of the cantilever plate 31 can be finely adjusted. The vertical adjustment bolt assembly includes two adjusting screws 15a and one positioning locking screw 15b. The cantilever plate 31 at the corresponding positions of the two adjusting screws 15a has no threaded hole, and the head of the adjusting screw 15a directly presses against the cantilever plate 31. The cantilever plate 31 at the corresponding position of the positioning locking screw 15b has a threaded hole 32.

[0053] In use, first loosen the positioning locking screw 15b, then tighten the adjusting screw 15a to push the cantilever plate 31 and the rear end of the fiber optic taper bracket 9 on it to descend, which will cause the front end of the fiber optic taper bracket 9 to rise, thus changing the tilt angle. In this way, the height of the fiber optic taper 7 will rise slightly. During coupling, loosen the adjusting screw 15a and tighten the positioning locking screw 15b, which will cause the fiber optic taper bracket 9 to change back to its original horizontal position, the tilt angle will decrease, that is, the height of the fiber optic taper 7 will decrease, and the distance between the fiber optic taper 7 and the microcavity will decrease, thus completing the precise distance adjustment during coupling.

[0054] In addition, the stepped groove on the fastener 8 at the corresponding position of the positioning locking screw 15b can accommodate the displacement in the front and rear directions of the positioning locking screw 15b.

[0055] This allows for fine-tuning of the height position of the fiber optic taper support 9, specifically its vertical position. Here, "vertical" refers to... Figure 2 The z-direction in the equation.

[0056] like Figures 6 to 8 As shown, the left and right horizontal adjustment mechanism includes a left and right elongated hole 91 and a vertical locking screw 18 on the fiber optic taper bracket 9. The vertical locking screw 18 locks the fiber optic taper bracket 9 onto the moving part of the vertical adjustment mechanism through the elongated hole 91 and adjusts the left and right positions. The fiber optic tap 7 is bonded to the fiber optic taper bracket 9, specifically using optically cured adhesive to bond the fiber optic taper 7 to the bonding point 17 of the fiber optic taper bracket 9.

[0057] The fiber optic taper bracket 9 has an elongated hole 91 in the middle, and is fixed to it by a vertical locking screw 18. Figure 6 The moving part of the vertical adjustment mechanism, namely the fixing screw hole 16 on the cantilever plate 31, is used to fix the position of the fiber optic taper support 9 by adjusting the left and right vertical locking screws 18. Adjusting the fixed position of the fiber optic taper support 9 can adjust the coupling position between the microcavity and the fiber optic taper 7. Here, the left and right horizontal direction refers to... Figure 2 The x-direction in the equation. This means that x-direction adjustment is achieved.

[0058] Vertical adjustment is achieved by tightening or loosening the vertical adjusting bolt 15. Changes in the tilt angle of the annular support 3 cause minute changes in the height of the fiber optic taper support 9, which in turn causes minute changes in the height of the fiber optic taper 7, i.e., minute changes in the vertical direction, thus enabling precise distance adjustment during coupling. This also achieves precise distance adjustment in the z-direction.

[0059] In this example, the encapsulation structure, including the coupling core component and the housing, can be made of stainless steel, aluminum, aluminum alloy, copper, copper alloy, and / or rigid plastic. Specifically, the materials of the housing 1, base 2, microcavity clamp 4, fiber taper support 9, the front-to-back horizontal adjustment mechanism of the microcavity clamp, and the left-to-right horizontal-vertical adjustment mechanism of the fiber taper support include stainless steel, aluminum, aluminum alloy, copper, copper alloy, and / or rigid plastic. Rigid plastics include rigid polyvinyl chloride, polymethyl methacrylate, and polycarbonate, etc. Brass is preferred.

[0060] In summary, the present invention has the following effects:

[0061] (1) This invention can be applied to WGM microcavities of various types and sizes.

[0062] (2) This invention differs from traditional microcavity packaging methods and can adjust the microcavity coupling state over a wide range.

[0063] (3) The present invention uses a specially designed flexible module to replace the 3D precision moving platform, which greatly reduces the system cost.

[0064] (4) The present invention has the advantages of high stability, wide applicability, high portability, low cost and small size.

[0065] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims. The information disclosed in the background section is intended only to enhance the understanding of the overall background technology of the present invention and should not be construed as an admission or implication in any way that such information constitutes prior art known to those skilled in the art.

Claims

1. A packaging structure suitable for coupling microcavities with fiber tapers, characterized in that, It includes a housing (1) and a base (2), a microcavity clamp (4) and a fiber taper support (9) encapsulated within the housing (1); The base (2) is located at the bottom of the housing (1), and the microcavity clamp (4) is installed at the front of the base (2) through the microcavity clamp front and rear horizontal adjustment clamping mechanism; the microcavity clamp (4) includes a horizontal clamping groove (41) in the front and rear direction, and the microcavity mounting rod (6) is located in the horizontal clamping groove (41) and moves back and forth and is locked by the locking mechanism; the front and rear position of the microcavity mounting rod (6) in the horizontal direction is coarsely adjusted; the microcavity is fixed on the microcavity mounting rod (6); The fiber taper bracket (9) is installed on the rear of the base (2) through the left-right horizontal-vertical adjustment mechanism of the fiber taper bracket; the fiber taper (7) is bonded to the fiber taper bracket (9).

2. The packaging structure suitable for coupling microcavities and fiber tapers according to claim 1, characterized in that, The microcavity clamp front and rear horizontal adjustment clamping mechanism includes a front and rear horizontal adjustment mechanism and a clamping mechanism; the clamping mechanism clamps the microcavity clamp (4) and is mounted on the moving part of the front and rear horizontal adjustment mechanism.

3. The packaging structure suitable for coupling microcavities and fiber tapers according to claim 2, characterized in that, The aforementioned front-to-back horizontal adjustment mechanism includes a movable block (13) as a moving component and a front-to-back horizontal adjustment bolt (14); the movable block (13) is located in the cavity of the base (2) and is floatingly connected to the base (2) through a flexible connector (131); the front-to-back horizontal adjustment bolt (14) passes through a threaded hole in the front-to-back direction on the outer edge of the front side of the base (2) of the cavity, and its inner end contacts the movable block (13) to finely adjust the front-to-back position of the movable block (13) in the horizontal direction.

4. The packaging structure suitable for coupling microcavities and fiber tapers according to claim 2, characterized in that, The clamping mechanism includes a fixed slot (5) and a clamping bolt (11); the fixed slot (5) is located on the moving part of the front and rear horizontal adjustment mechanism; the micro-cavity clamp (4) is located in the front and rear through slot of the fixed slot (5) and is clamped by the lateral clamping bolt (11).

5. The packaging structure suitable for coupling microcavities and fiber tapers according to claim 1, 2, 3 or 4, characterized in that, The optical fiber taper bracket's left-right horizontal-vertical adjustment mechanism includes a left-right horizontal adjustment mechanism and a vertical adjustment mechanism; the left-right horizontal adjustment mechanism is mounted on the moving part of the vertical adjustment mechanism.

6. The packaging structure suitable for microcavity and fiber taper coupling according to claim 5, characterized in that, The vertical adjustment mechanism includes an annular support (3), a cantilever plate (31), and a vertical adjustment bolt assembly; The annular support (3) is installed at the rear of the base (2); the cantilever plate (31) is located inside the annular support (3), and its fixed end is connected to the front frame of the annular support (3); the vertical adjustment bolt group is located at the rear of the annular support (3) and presses against the cantilever end of the cantilever plate (31) from the top and bottom, so as to finely adjust the tilt angle of the cantilever plate (31) and thus finely adjust the height position of the fiber optic cone support (9).

7. The packaging structure suitable for microcavity and fiber taper coupling according to claim 5, characterized in that, The left and right horizontal adjustment mechanism includes a left and right elongated hole (91) and a vertical locking screw (18) on the fiber optic taper bracket (9). The vertical locking screw (18) locks the fiber optic taper bracket (9) onto the moving part of the vertical adjustment mechanism through the elongated hole (91) and adjusts the left and right position.

8. The packaging structure suitable for microcavity and fiber taper coupling according to claim 1, 2, 3 or 4, characterized in that, The locking mechanism includes a cantilever clamping block formed by a longitudinal U-shaped through groove (42) that passes through the horizontal clamping groove (41) on one side. The cantilever clamping block is deformed and locked by a horizontal locking screw (10) to install a straight rod (6) in the micro-cavity.

9. The packaging structure suitable for microcavity and fiber taper coupling according to claim 1, 2, 3 or 4, characterized in that, The microcavity forms include crystal cavities, quartz rod cavities, or glass material microcavities; the microcavity shapes include spherical, disk-shaped, cylindrical, V-shaped, or bottle-neck-shaped.

10. The packaging structure suitable for microcavity and fiber taper coupling according to claim 1, 2, 3 or 4, characterized in that, The materials of the housing (1), base (2), microcavity clamp (4), fiber optic taper bracket (9), front and rear horizontal adjustment clamping mechanism of microcavity clamp and left and right horizontal-vertical adjustment mechanism of fiber optic taper bracket include stainless steel, aluminum, aluminum alloy, copper, copper alloy and / or rigid plastic.

Images