An alignment device for lensed fiber arrays

Abstract

The utility model discloses a kind of alignment arrangement suitable for lens fiber array, belong to optical device technical field, including optical fiber arrangement mechanism, light beam analyzer, rotary displacement mechanism and light source, the combination setting of the combination of optical fiber arrangement mechanism with the arrangement fiber groove of fiber arrangement table and bottom plate, pressing plate, so that the bare fiber end portion of optical fiber with lens can be accurately arranged in each arrangement fiber groove, and under the detection of light beam analyzer, after each optical fiber transmits light, the light spot detection of light emission is completed, and under the driving of rotary displacement mechanism, the alignment adjustment of each lens fiber is completed, finally realize the high-precision alignment arrangement of lens fiber array.The alignment arrangement suitable for lens fiber array in the utility model, simple structure, convenient to use, can guarantee the accuracy of lens fiber array arrangement setting, eliminate the adverse effects introduced due to each lens fiber index difference, and then improve the coupling efficiency and coupling effect when lens fiber array is used, with good practical value.

Description

Technical Field

[0001] This utility model belongs to the field of optical device technology, specifically relating to an alignment and arrangement device suitable for lens fiber arrays. Background Technology

[0002] Lens-based optical fibers are key components in semiconductor lasers. Typically, tapered or cylindrical lenses are fabricated on the end face of the fiber, allowing the laser to be directly coupled into the fiber through the end face lens. This results in a more compact device structure compared to discrete lens coupling.

[0003] A key aspect of silicon-based optoelectronic chip packaging technology is achieving the coupling connection between the optical signals within the chip and external optical signals (mostly fiber optic signals). End-face coupling is widely used in silicon-based optoelectronic chip packaging technology due to its simple packaging process and high coupling efficiency. Typically, the mode spot diameter of a silicon-based optical chip end-face mode converter (SSC) is around 3 μm. When coupled with an optical fiber array (FA), the mode field mismatch between the two is low because the mode field of a conventional single-mode fiber is 10 μm.

[0004] Currently, the industry typically improves coupling efficiency by increasing the chip mode size and reducing the fiber mode field. A UV-curable adhesive is used to achieve refractive index matching and bonding at the coupling end face of the chip and fiber array. However, since silicon-based optoelectronic chips are generally only 0.7mm thick, the bonding area at the coupling end face is small, making it difficult to guarantee bonding strength. Furthermore, controlling the positioning accuracy of each fiber end face along the laser propagation direction in a lens fiber array to below 3μm is extremely difficult. Even if positioning accuracy is achieved, differences in the curvature radius of the lens fiber end face processing, resulting in variations in lens mode and focal length, will affect its use, leading to low efficiency and poor coupling effect when participating in coupling. Utility Model Content

[0005] In view of one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides an alignment and arrangement device suitable for lens fiber arrays, which can realize the accurate arrangement of lens fiber arrays and eliminate the adverse effects caused by differences in lens fiber specifications.

[0006] To achieve the above objectives, this utility model provides an alignment and arrangement device suitable for lens fiber arrays, including a fiber arrangement mechanism, a beam analyzer, a rotational displacement mechanism, and a light source; The fiber optic cabling mechanism includes a base plate, a pressure plate, and a fiber optic cabling platform. The fiber optic cabling platform is located on the top surface of one end of the base plate along a first direction, and multiple parallel fiber optic slots are formed on the top surface of the fiber optic cabling platform, extending through both ends of the platform along the first direction. Bare fibers with lenses at their ends are placed behind the fiber optic slots with their tops protruding from the top surface of the platform. The pressure plate is positioned corresponding to the fiber optic cabling platform, and during operation, its bottom surface is parallel to the top surface of the platform. The distance between the bottom surface of the pressure plate and the top surface of the platform is adjustable. The light source is set to correspond to each lens fiber to be arranged, and is used to connect the unstripped end of each lens fiber to pass detection light into each lens fiber; the beam analyzer is located on one side of the fiber arrangement stage in the first direction, and is used to observe the morphology of the light spot after each lens fiber passes light. The rotational displacement mechanism is located on the side of the base plate away from the fiber arrangement table. It includes a clamping unit integrated with the rotation unit and the translation unit. The unstripped end of each lens fiber can be clamped by the clamping unit and rotated and translated axially under the drive of the rotation unit and the translation unit.

[0007] As a further improvement of this utility model, the first direction is the width direction or the length direction of the base plate.

[0008] As a further improvement of this utility model, it also includes a glass baffle located between the beam analyzer and the fiber arrangement stage; The end face of the glass baffle is perpendicular to the axis of each fiber channel and is used to abut the ends of each lens fiber extending out of the fiber channel so that the ends of each lens fiber are flush.

[0009] As a further improvement of this utility model, the glass baffle is supported on the translation bracket; and / or The thickness of the glass baffle is 0.05mm to 0.2mm.

[0010] As a further improvement of this utility model, a visual recognition module is also included; The visual recognition module is located on one side of the second direction between the beam analyzer and the fiber optic tray, and is used for image recognition of the lens fiber ends extending from the fiber optic tray so that the ends of each lens fiber tend to be flush in the second direction; wherein, the second direction is a horizontal direction perpendicular to the first direction.

[0011] As a further improvement of this utility model, the visual recognition module is a CCD camera, and the axis of its lens is along the second direction.

[0012] As a further improvement of this utility model, the beam analyzer is a slit beam analyzer, used to observe the size and ellipticity of the light spot emitted from each lens fiber.

[0013] As a further improvement of this utility model, the fiber discharge groove is a V-shaped groove; and / or The fiber feeding platform is integrally formed with the base plate or can be detachably connected.

[0014] As a further improvement of this utility model, the pressure plate and the fiber feeding platform are connected by two studs located at both ends of the fiber feeding platform; the bottom of the stud is connected to the fiber feeding platform, and its top can be threadedly connected to a lock nut after passing through the pressure plate; and A spring is fitted around the outer periphery of the stud, and an embedding groove for accommodating the end of the spring is provided on the bottom surface of the pressure plate and / or the top surface of the fiber feeding platform; at least one end of the spring is embedded in the embedding groove, so that the pressure plate not locked by the locking nut can move away from the bare fiber in the fiber feeding groove under the support of the two springs, and the pressure plate locked by the two locking nuts can press the bare fiber in each fiber feeding groove.

[0015] As a further improvement of this utility model, an elastic pad is provided on one end face of the pressure plate facing the fiber optic tray, so that when the pressure plate presses the lens fiber in the fiber optic tray, the elastic pad presses against the top of the bare fiber.

[0016] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0017] In summary, the beneficial effects of the above-described technical solutions conceived by this utility model compared with the prior art include: This invention relates to an alignment and arrangement device for lens fiber arrays, comprising a fiber arrangement mechanism, a beam analyzer, a rotational displacement mechanism, and a light source. The fiber arrangement mechanism utilizes a combination of a fiber arrangement platform with fiber arrangement slots, a base plate, and a pressure plate to accurately arrange the bare fiber ends with lenses in each fiber arrangement slot. Under the detection of the beam analyzer, the emitted light spot of each fiber after light transmission is detected. The rotational displacement mechanism then adjusts the alignment of each lens fiber, ensuring consistent light emission characteristics across the fiber array. This meets the high-precision setup requirements of lens fiber arrays and improves the performance and coupling effect after fabrication.

[0018] The alignment and arrangement device for lens fiber arrays in this invention has a simple structure and is easy to use. It can quickly arrange and adjust the lens fiber array with galvanometer end, ensuring the accuracy of the lens fiber array arrangement and eliminating the adverse effects caused by the differences in the specifications of each lens fiber. This improves the coupling efficiency and coupling effect when the lens fiber array is used, and has good practical value. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the alignment and arrangement device for lens fiber arrays in this embodiment of the present invention; Figure 2 This is a schematic diagram of the fiber optic arrangement mechanism after the base plate and fiber arrangement platform are combined in an embodiment of this utility model. Figure 3 This is a structural cross-sectional view of the fiber optic arrangement mechanism in an embodiment of this utility model; Figure 4 This is a schematic diagram of the rotary displacement mechanism in an embodiment of this utility model; In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. Fiber optic cable arrangement mechanism; 2. Glass baffle; 3. Vision recognition module; 4. Beam analyzer; 5. Rotational displacement mechanism; 6. Light source; 7. Lens fiber optic cable; 101. Base plate; 102. Pressure plate; 103. Fiber feeding table; 1031. Fiber feeding groove; 104. Stud; 105. Spring; 106. Locking nut; 107. Elastic pad; 501. Clamping unit; 502. Rotation unit; 503. Translation unit; 701. Bare fiber. Detailed Implementation To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0021] In the description of this utility model, it should be understood that, unless otherwise explicitly specified and limited, the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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 utility model.

[0022] Furthermore, unless otherwise expressly defined, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] Below, for reference Figures 1-3 This invention describes a preferred embodiment of an alignment arrangement device suitable for lens fiber arrays.

[0026] like Figure 1As shown, the alignment and arrangement device for lens fiber arrays in this embodiment includes a fiber arrangement mechanism 1, a beam analyzer 4, a rotation and displacement mechanism 5, and a light source 6.

[0027] The fiber optic routing mechanism 1 includes a base plate 101, a pressure plate 102, and a fiber routing platform 103. The fiber routing platform 103 is located on the top surface of one end of the base plate 101 along a first direction. Multiple parallel fiber routing grooves 1031 are formed on the top surface of the fiber routing platform 103 along the first direction, penetrating both ends of the platform. Bare fibers 701 with lenses at their ends are placed in the fiber routing grooves 1031, with their tops protruding from the top surface of the platform 103. The pressure plate 102 is positioned corresponding to the fiber routing platform 103, and its bottom surface is parallel to the top surface of the platform 103 during operation. The distance between the bottom surface of the pressure plate 102 and the top surface of the platform 103 is adjustable.

[0028] By utilizing the parallel arrangement and adjustable distance between the pressure plate 102 and the fiber feeding table 103, the pressure plate 102 can press the bare fiber 701 in the fiber feeding groove 1031 or release the pressure on the bare fiber 701 by being close to the fiber feeding table 103. Furthermore, the light source 6 is positioned corresponding to each lens fiber 7 to be arranged, and is used to connect the unstripped end (i.e., the tail end) of each lens fiber 7 to pass detection light into each lens fiber 7. The beam analyzer 4 is located on the first direction side of the fiber arrangement stage 103 (the side close to the protruding end of the bare fiber 701), and is used to observe the morphology of the light spot after passing light through each lens fiber 7, thereby providing a basis for the alignment adjustment of each lens fiber 7.

[0029] In addition, the rotation displacement mechanism 5 is located on the side of the base plate 101 away from the fiber arrangement platform 103. It includes a clamping unit 501 integrated with the rotation unit 502 and the translation unit 503. The unstripped end of each lens fiber 7 can be clamped by the clamping unit 501 and rotated and translated axially under the drive of the rotation unit 502 and the translation unit 503. This enables the alignment adjustment of the lenses at the ends of each lens fiber 7 and completes the alignment and arrangement of the lens fiber array.

[0030] More specifically, the aforementioned first direction refers to the width or length direction of the base plate 101. That is, the fiber feeding platform 103 is located on one side of the width direction or one side of the length direction of the base plate 101. In this case, the axis of the fiber feeding groove 1031 is parallel to the width or length direction of the base plate 101.

[0031] In actual installation, the bottom of the fiber tray 1031 is higher than the top surface of the base plate 101, such as... Figure 2 , Figure 3As shown, this arrangement is designed to avoid misalignment between the unstripped coating of the lens fiber 7 and the base plate 101, preventing the lens fiber 7 from bending at the junction of the base plate 101 and the fiber arrangement platform 103, thereby ensuring the accuracy of the rotation and translation of the lens fiber 7.

[0032] Furthermore, in order to achieve pre-alignment of the end lenses when arranging the lens fibers 7, a glass baffle 2 is preferably provided between the beam analyzer 4 and the fiber arrangement stage 103. The end face of the glass baffle 2 is perpendicular to the axis of each fiber arrangement groove 1031 and is used to abut against the ends of each lens fiber 7 extending out of the fiber arrangement groove 1031, so that the ends of each lens fiber 7 are flush.

[0033] It is understandable that, in actual setup, the glass baffle 2 can be supported on the translation bracket (not shown in the figure). The distance between the glass baffle 2 and the fiber tray 103 can be adjusted by using the translation bracket. Then, by the slight pressure of the glass baffle 2 against the end lens of the bare fiber 701, the end lens of each bare fiber 701 can be pre-aligned.

[0034] After the pre-alignment of each end lens is completed, the contact between each end lens and the glass baffle 2 can be released by the translation bracket, thus removing the restriction on the subsequent axial displacement adjustment of the rotation displacement mechanism 5.

[0035] More specifically, in the preferred embodiment, the thickness of the glass baffle 2 is 0.05mm to 0.2mm.

[0036] As another alternative, a visual recognition module 3 is also preferred. The visual recognition module 3 is located on one side of the second direction between the beam analyzer 4 and the fiber optic tray 103, and is used for image recognition of the ends of the lens fibers 7 extending out of the fiber optic tray 1031 so that the ends of each lens fiber 7 tend to be flush in the second direction; wherein the second direction is a horizontal direction perpendicular to the first direction.

[0037] Obviously, the visual recognition module 3 and the glass baffle 2 can be set at the same time, or only one of them can be set.

[0038] More specifically, in the preferred embodiment, the visual recognition module 3 is a CCD camera, the axis of which is along the second direction, so that the CCD camera can detect the protruding position of the end lens of the bare fiber 701 along the second direction, thereby realizing the end positioning of the bare fiber 701 when it is placed in the fiber tray 1031.

[0039] More specifically, as an example, in the preferred embodiment, the beam analyzer 4 is a slit beam analyzer, which can be used to observe the size and ellipticity of the light spot emitted from each lens fiber 7.

[0040] Furthermore, it is understood that, in order to achieve the pressing of the top of the bare fiber 701 by the pressure plate 102, in the preferred embodiment, after the bare fiber 701 is placed in the fiber discharge groove 1031, the top of the bare fiber 701 should protrude from the top surface of the fiber discharge table 103. More preferably, each fiber discharge groove 1031 is a V-shaped groove.

[0041] Furthermore, in the preferred embodiment, the fiber feeding platform 103 and the base plate 101 are integrally formed or detachably connected.

[0042] As an example, the pressure plate 102 and the fiber feeding platform 103 are connected by two studs 104 located at both ends of the fiber feeding platform 103 (second direction). In this case, the bottom of the stud 104 is connected to the fiber feeding platform 103, and its top can be threadedly connected to the locking nut 106 after passing through the pressure plate 102.

[0043] Meanwhile, a spring 105 is sleeved on the outer periphery of the stud 104, and an embedding groove for accommodating the end of the spring 105 is formed on the bottom surface of the pressure plate 102 and / or the top surface of the fiber feeding table 103. Utilizing the embedding groove, at least one end of the spring 105 is embedded in the groove, allowing the pressure plate 102, not locked by the locking nut 106, to move away from the bare fibers 701 in the fiber feeding groove 1031 under the support of the two springs 105, while the pressure plate 102 locked by the two locking nuts 106 can press the bare fibers 701 in each fiber feeding groove 1031. For ease of locking operation, the two locking nuts 106 in the preferred embodiment are preferably wing nuts.

[0044] For example, in such Figure 3 In the preferred embodiment shown, an insert groove is coaxially provided on the bottom surface of the pressure plate 102 corresponding to the through hole of the stud 104, and an annular limiting step is formed at the junction of the two. At this time, the spring 105 is sleeved on the outer periphery of the stud 104, with its bottom abutting against the top surface of the fiber optic table 103, and its top embedded in the insert groove and abutting against the annular limiting step. When the locking nut 106 is not tightened, the pressure plate 102 can be supported away from the top surface of the fiber optic table 103 by the support of the two springs 105; when the two locking nuts 106 are tightened, the two springs 105 are compressed, the pressure plate 102 approaches the fiber optic table 103, and presses the bare fiber 701 in each fiber optic groove 1031 after the alignment adjustment is completed with its bottom surface, providing conditions for the dispensing and curing of each lens fiber 7.

[0045] More preferably, an elastic pad 107 is provided on the end face of the pressure plate 102 facing the fiber tray 103, so that when the pressure plate 102 presses the lens fiber 7 in the fiber tray 1031, the elastic pad 107 presses against the top of the bare fiber 701. By using the elastic pad 107, rigid contact between the pressure plate 102 and the bare fiber 701 can be effectively avoided, reducing the surface pressure damage to the bare fiber 701 when the pressure plate 102 holds the bare fiber 701.

[0046] Furthermore, regarding the rotary displacement mechanism 5 in the preferred embodiment, its structural form is as follows: Figure 4 As shown in the figure. The rotating unit 502 has a cylindrical structure, and the clamping unit 501 is disposed at one end of its axial direction. The clamping unit 501 is a pressing module, which includes a base plate connected to one end of the rotating unit 502 along its axial direction and a clamping plate that is adjustablely connected to the base plate. By adjusting the distance between the clamping plate and the base plate, the clamping action of the pressing module can be switched between clamping and contact clamping.

[0047] It is understood that, in actual installation, it is preferable to have a clamping groove axially formed on the side of the substrate facing the clamping plate for placing the lens fiber 7. At the same time, a central hole communicating with the clamping groove is formed axially in the middle of the rotating unit 502 for coaxial insertion of the lens fiber 7. In this case, the clamping groove is further coaxially arranged with the central hole.

[0048] More specifically, the rotating unit 502 is rotatably embedded in a rotating ring, and the rotating ring is provided with a locking element for locking the rotating unit 502 after it has rotated to its designated position. For example, in... Figure 4 In the preferred embodiment shown, the locking element is a locking screw, which is threadedly connected to the rotating ring and can be locked by rotating and tightening.

[0049] As a preferred example, a notch is provided in the rotating ring, and a notch connecting the central hole is provided on one side of the rotating unit 502. In this case, by utilizing the alignment between the two notches, the lens fiber 7 can be radially assembled into the rotating unit 502.

[0050] Furthermore, in the preferred embodiment, the rotating ring is supported on the translation unit 503, and the translation unit 503 is preferably a combination structure of a slider and a slide rail, with the axis of the slide rail parallel to the axis of the rotating unit 502. The axial reciprocating motion of the rotating unit 502 and the lens fiber 7 held by it is achieved by sliding the slider.

[0051] Of course, the configuration of the aforementioned rotary displacement mechanism 5 can be changed according to the actual needs, as long as the rotary displacement mechanism 5 can achieve its rotational function and unique function, which will not be elaborated here.

[0052] More specifically, the lens fiber 7 in the preferred embodiment is tapered, wedge-shaped, or obliquely wedge-shaped.

[0053] In actual setup, based on the aforementioned alignment arrangement device, the preferred alignment arrangement process for the lens fiber array is as follows: (1) Remove the coating layer from the front end of the lens fiber 7 and place each bare fiber 701 after the coating layer is removed into the fiber tray 1031 respectively; at this time, the pressure plate 102 is in an unlocked state and does not abut against the top of each bare fiber 701, and each lens fiber 7 can rotate freely and move axially.

[0054] (2) Assemble the unstripped coating end of the lens fiber 7 into the rotary displacement mechanism 5, and extend the end of the bare fiber 701 with the end lens out of the fiber arrangement table 103 by a certain length according to the usage requirements. Through the visual recognition module 3, adjust the ends of each bare fiber 701 to a position of approximately alignment.

[0055] (3) Control the glass baffle 2 parallel to the end face of the fiber optic table 103 to move close to the fiber optic table 103 until the lens ends of each bare fiber 701 abut against the end face of the glass baffle 2, thereby quickly keeping the end faces of each lens on the same horizontal plane and completing the end alignment of the lens fiber 7.

[0056] (4) Connect the tail end of the lens fiber 7 to the light source 6, and the light source 6 completes the light transmission of the lens fiber 7; then the lens end of the lens fiber 7 emits light, and the size and ellipticity of the light spot emitted from each lens end are observed using the beam analyzer 4; if the size and ellipticity of the light spot are inconsistent, the corresponding rotation displacement mechanism 5 is controlled to work, driving the corresponding lens fiber 7 to move back and forth and / or rotate until the size and ellipticity of each light spot tend to be consistent.

[0057] In actual setup, the wavelength of the test light provided by the light source 6 is greater than the cutoff wavelength of the lens fiber 7, so that the light output from the lens fiber 7 remains in single-mode.

[0058] Taking the alignment arrangement of a multi-core conical lens fiber array as an example, in actual setup, the aforementioned operations (1) to (3) are performed sequentially. During process (4), a slit beam analyzer is used to observe the size and ellipticity of the light spot emitted by each fiber end lens. The light emitted by the conical lens fiber is a circular light spot. Since the end alignment operation has been performed through the glass baffle 2 and the visual recognition module 3, at this time, by controlling the operation of the rotation displacement mechanism 5, the lens fiber 7 is slightly rotated to the lowest ellipticity position. The light spot size is compared, and the position of the lens fiber 7 is adjusted back and forth to make the size of the light spot emitted by the lens fiber 7 tend to be consistent.

[0059] For the multi-core wedge-shaped lens fiber array, in actual setup, the aforementioned operations (1) to (3) are performed sequentially. In process (2), when the visual recognition module 3 performs visual recognition, it is preferable to first align the wedge surfaces of each lens fiber 7 to the same direction under the guidance of the visual recognition module 3. After that, the baffles of each end lens are aligned and the light transmission is detected. The size and ellipticity of the light spot emitted by each fiber are observed using a slit beam analyzer. The light emitted by the wedge-shaped lens fiber is an elliptical light spot. By controlling the operation of the rotation displacement mechanism 5, the lens fiber 7 is slightly rotated to the position with the lowest ellipticity and the light spot orientation is the same. After that, the light spot size is compared, and the position of the lens fiber 7 is adjusted back and forth to make the size of the light spot emitted by the lens fiber 7 more consistent.

[0060] (5) After the alignment and arrangement of each lens fiber 7 is completed, the pressure plate 102 is locked, and each bare fiber 701 is locked on the fiber arrangement table 103 by the pressure plate 102. At this time, the position of the lens fiber 7 is fixed. The alignment and arrangement of the lens fiber array is completed through the processes of applying adhesive to the head, UV curing, applying adhesive to the tail, and UV curing.

[0061] The alignment and arrangement device for lens fiber arrays in this invention has a simple structure and is easy to use. It can quickly arrange and adjust the lens fiber array with galvanometer end, ensuring the accuracy of the lens fiber array arrangement and eliminating the adverse effects caused by the differences in the specifications of each lens fiber. This improves the coupling efficiency and coupling effect when the lens fiber array is used, and has good practical value.

[0062] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning and arrangement device suitable for lens fiber arrays, characterized in that, Includes fiber optic arrangement mechanism, beam analyzer, rotary displacement mechanism and light source; The fiber optic cabling mechanism includes a base plate, a pressure plate, and a fiber optic cabling platform. The fiber optic cabling platform is located on the top surface of one end of the base plate along a first direction, and multiple parallel fiber optic slots are formed on the top surface of the fiber optic cabling platform, extending through both ends of the platform along the first direction. Bare fibers with lenses at their ends are placed behind the fiber optic slots with their tops protruding from the top surface of the platform. The pressure plate is positioned corresponding to the fiber optic cabling platform, and during operation, its bottom surface is parallel to the top surface of the platform. The distance between the bottom surface of the pressure plate and the top surface of the platform is adjustable. The light source is set to correspond to each lens fiber to be arranged, and is used to connect the unstripped end of each lens fiber to pass detection light into each lens fiber; the beam analyzer is located on one side of the fiber arrangement stage in the first direction, and is used to observe the morphology of the light spot after each lens fiber passes light. The rotational displacement mechanism is located on the side of the base plate away from the fiber arrangement table. It includes a clamping unit integrated with the rotation unit and the translation unit. The unstripped end of each lens fiber can be clamped by the clamping unit and rotated and translated axially under the drive of the rotation unit and the translation unit.

2. The alignment and arrangement device for lens fiber arrays according to claim 1, characterized in that, The first direction is either the width direction or the length direction of the base plate.

3. The alignment and arrangement device for lens fiber arrays according to claim 2, characterized in that, It also includes a glass baffle located between the beam analyzer and the fiber arrangement stage; The end face of the glass baffle is perpendicular to the axis of each fiber channel and is used to abut the ends of each lens fiber extending out of the fiber channel so that the ends of each lens fiber are flush.

4. The alignment and arrangement device for lens fiber arrays according to claim 3, characterized in that, The glass baffle is supported on the translation bracket; and / or The thickness of the glass baffle is 0.05mm to 0.2mm.

5. The alignment and arrangement device for lens fiber arrays according to any one of claims 1 to 4, characterized in that, It also includes a visual recognition module; The visual recognition module is located on one side of the second direction between the beam analyzer and the fiber optic tray, and is used for image recognition of the lens fiber ends extending from the fiber optic tray so that the ends of each lens fiber tend to be flush in the second direction; wherein, the second direction is a horizontal direction perpendicular to the first direction.

6. The alignment and arrangement device for lens fiber arrays according to claim 5, characterized in that, The visual recognition module is a CCD camera, and the axis of its lens is along the second direction.

7. The alignment and arrangement device for lens fiber arrays according to any one of claims 1 to 4 and 6, characterized in that, The beam analyzer is a slit beam analyzer, used to observe the size and ellipticity of the light spot emitted from each lens fiber.

8. The alignment and arrangement device for lens fiber arrays according to any one of claims 1 to 4 and 6, characterized in that, The fiber routing groove is a V-shaped groove; and / or The fiber feeding platform is integrally formed with the base plate or can be detachably connected.

9. The alignment and arrangement device for lens fiber arrays according to any one of claims 1 to 4 and 6, characterized in that, The pressure plate and the fiber feeding platform are connected by two studs located at both ends of the fiber feeding platform; the bottom of the stud is connected to the fiber feeding platform, and its top can be threaded into a lock nut after passing through the pressure plate; and A spring is fitted around the outer periphery of the stud, and an embedding groove for accommodating the end of the spring is provided on the bottom surface of the pressure plate and / or the top surface of the fiber feeding platform; at least one end of the spring is embedded in the embedding groove, so that the pressure plate not locked by the locking nut can move away from the bare fiber in the fiber feeding groove under the support of the two springs, and the pressure plate locked by the two locking nuts can press the bare fiber in each fiber feeding groove.

10. The alignment and arrangement device for lens fiber arrays according to claim 9, characterized in that, An elastic pad is provided on one end face of the pressure plate facing the fiber optic tray, so that when the pressure plate presses the lens fiber in the fiber optic tray, the elastic pad presses against the top of the bare fiber.

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