Lens type optical fiber array stacking structure

Abstract

The invention relates to a lens type optical fiber array stacking structure. The convex ribs of the optical fiber array modules correspond to the two sliding rails, the first passive alignment parts and the second passive alignment parts of the two optical fiber array modules are matched in a concave-convex mode, and the first bearing part of the butt joint end lens group and the first lens bearing platform of the substrate are arranged. And / or the second bearing part of the chip end lens group and the second lens bearing platform of the substrate are arranged, so that the optical fiber array module and each lens group can be passively positioned on a correct focal length during assembly, the yield is improved, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to a field of optical fiber array stacking, and particularly relates to a lens type optical fiber array stacking structure which can passively position optical fiber array modules and lens groups at correct focal lengths. BACKGROUND

[0002] In the current optical fiber array stacking technology, the lens groups at the mating end and the lens groups at the chip end need to be aligned with each optical fiber in the optical fiber array to avoid the discontinuity of the light beam during the travel. In order to align the lens groups with the optical fibers in the optical fiber array, an external mold must be used to position the lenses and the optical fiber array during assembly to complete the alignment operation. However, the cost of the mold is very high, and the structure of each model of product is different, which leads to the use of different molds for each model of product, and the cost is very expensive. Furthermore, even after the alignment assembly by the mold, it is not possible to confirm whether the lenses are positioned at the correct focal length, resulting in a low yield. SUMMARY

[0003] The present application aims to provide a lens type optical fiber array stacking structure which can passively position the optical fiber array modules and the lens groups at the correct focal length during assembly by the convex ribs of the optical fiber array modules corresponding to the two slide rails, the concave-convex matching between the first passive alignment part and the second passive alignment part of the two optical fiber array modules, the first bearing part of the lens group at the mating end and the first lens bearing platform of the substrate, and / or the second bearing part of the lens group at the chip end and the second lens bearing platform of the substrate, to complete passive alignment and positioning, thereby improving the yield and reducing the cost.

[0004] To achieve the aforementioned objective, the present invention provides a lens-type fiber array stacking structure, comprising: a substrate having at least one plate body, a first lens bearing platform, and two slide rails; the first lens bearing platform extending upward from one side of the plate body; the two slide rails being spaced apart and parallel to each other on the plate body; a central axis of the first lens bearing platform being perpendicular to a central axis of each of the slide rails; the first lens bearing platform and each of the slide rails being spaced apart; a mating end lens group disposed on the first lens bearing platform of the substrate; a first bearing portion having a bottom of the mating end lens group, the first bearing portion being correspondingly positioned and bearing against the first lens bearing platform; and two fiber array modules, wherein one fiber array module is flipped up and down to combine with the other fiber array module to be disposed on the substrate, and each fiber... The array module has a carrier plate and multiple optical fibers. The upper surface of the carrier plate has a receiving portion, and a rib is protruding from the lower surface of the carrier plate opposite to the upper surface. The multiple optical fibers are stacked in an array within the receiving portion, and the central axis of each optical fiber is parallel to the central axis of each slide rail. The rib of one optical fiber array module is located between two slide rails, and the two sides of the rib abut against the two slide rails for alignment and positioning. The carrier plate has a first passive alignment portion and a second passive alignment portion on both sides of the receiving portion. The first passive alignment portion of one optical fiber array module is aligned and positioned with the second passive alignment portion of another optical fiber array module, and vice versa.

[0005] In some embodiments, the two sides of the rib are inclined surfaces, each inclined surface is inclined toward the center of the rib and abuts against each slide rail.

[0006] In some embodiments, the first passive alignment portion is a groove, and the second passive alignment portion is a convex strip.

[0007] In some embodiments, the groove is a V-shaped groove, a trapezoidal groove, or a semi-circular groove, and the convex strip is a V-shaped convex strip corresponding to the V-shaped groove, a trapezoidal convex strip corresponding to the trapezoidal groove, or a semi-circular convex strip corresponding to the semi-circular groove.

[0008] In some embodiments, the two fiber array modules are bonded to the docking end lens group by an optical matching adhesive.

[0009] In some embodiments, the substrate further includes a second lens support platform that extends upward from the side of the substrate opposite to the side having the first lens support platform.

[0010] In some embodiments, the lensed fiber array stack structure further comprises a chip end lens group, a bottom of the chip end lens group has a second abutting part, the second abutting part is correspondingly positioned and abuts against the second lens abutting platform.

[0011] In some embodiments, a cross section of each slide rail is semicircular.

[0012] In some embodiments, the chip end lens group further comprises a prism part, which is arranged on a side of the chip end lens group far from the abutting end lens group.

[0013] In some embodiments, a central axis of the second lens abutting platform is perpendicular to the central axis of each slide rail, and the second lens abutting platform is arranged apart from each slide rail.

[0014] In order to make the above objectives, characteristics and advantages of the present application more apparent and comprehensible, the following specific embodiments are listed with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a side view schematic diagram of the first embodiment of the lensed fiber array stack structure of the present application.

[0016] Figure 2 It is a perspective view schematic diagram of the substrate in the first embodiment of the lensed fiber array stack structure of the present application.

[0017] Figure 3 It is a perspective view schematic diagram of the first embodiment of the lensed fiber array stack structure of the present application.

[0018] Figure 4 It is a front view schematic diagram of the first embodiment of the lensed fiber array stack structure of the present application.

[0019] Figure 5 It is a side view schematic diagram of the abutting lens in the first embodiment of the lensed fiber array stack structure of the present application.

[0020] Figure 6 It is a rear view schematic diagram of the abutting end lens group in the first embodiment of the lensed fiber array stack structure of the present application.

[0021] Figure 7 It is a front view schematic diagram of one fiber array module in the first embodiment of the lensed fiber array stack structure of the present application.

[0022] Figure 8 It is a perspective view schematic diagram of one fiber array module in the first embodiment of the lensed fiber array stack structure of the present application.

[0023] Figure 9Front view schematic diagram of mutual alignment and positioning of two optical fiber array modules in the first embodiment of the lens type optical fiber array stacking structure of the present application.

[0024] Figure 10 Front view schematic diagram of increasing stacking layer number of two optical fiber array modules in the first embodiment of the lens type optical fiber array stacking structure of the present application.

[0025] Figure 11 Side view schematic diagram of the second embodiment of the lens type optical fiber array stacking structure of the present application.

[0026] Figure 12 Side view schematic diagram of the chip end lens in the second embodiment of the lens type optical fiber array stacking structure of the present application.

[0027] Figure 13 Stereoscopic schematic diagram of the chip end lens in the second embodiment of the lens type optical fiber array stacking structure of the present application.

[0028] Explanation of reference signs:

[0029] 100: lens type optical fiber array stacking structure;

[0030] 110: substrate;

[0031] 111: plate body;

[0032] 112: first lens supporting platform;

[0033] 113: slide rail;

[0034] 114: second lens supporting platform;

[0035] 120: butt joint end lens group;

[0036] 121: first supporting part;

[0037] 130: optical fiber array module;

[0038] 131: bearing plate;

[0039] 132: optical fiber;

[0040] 133: accommodating part;

[0041] 134: convex rib;

[0042] 135: inclined surface;

[0043] 136: first passive alignment part;

[0044] 137: second passive alignment part;

[0045] 140: optical matching glue;

[0046] 200: Lens-type fiber optic array stacked structure;

[0047] 240: Chip-side lens assembly;

[0048] 241: Second bearing section;

[0049] 242: Prism section;

[0050] 300: Lens. Detailed Implementation

[0051] The advantages, features, and technical methods of the present invention will be more readily understood by referring to the exemplary embodiments and accompanying drawings. The present invention may be implemented in different forms and should not be construed as being limited to the embodiments set forth herein. Rather, the embodiments provided will make this disclosure more thorough, complete, and fully convey the scope of the invention to those skilled in the art, and the invention will be defined only as provided in the appended claims.

[0052] Additionally, the terms "comprising" and / or "including" refer to the presence of the stated features, regions, wholes, steps, operations, components, and / or parts, but do not exclude the presence or addition of one or more other features, regions, wholes, steps, operations, components, parts, and / or combinations thereof.

[0053] To facilitate your review committee's understanding of the content of this invention and the effects it can achieve, the following detailed description is provided in conjunction with the specific embodiments illustrated in the drawings.

[0054] Figure 1 This is a side view schematic diagram of the first embodiment of the lens-type fiber array stacking structure of the present invention. Figure 2 This is a three-dimensional schematic diagram of the substrate in the first embodiment of the lens-type fiber array stacking structure of the present invention. Figure 3 This is a three-dimensional schematic diagram of the first embodiment of the lens-type fiber array stacking structure of the present invention. Figure 4 This is a front view schematic diagram of the first embodiment of the lens-type fiber array stacking structure of the present invention.

[0055] Please refer to Figure 1 and Figure 2 The lens-type fiber array stacked structure 100 of the first embodiment of the present invention includes a substrate 110, a pair-end lens group 120 and two fiber array modules 130.

[0056] Please refer to Figure 3 In this embodiment, the substrate 110 may have a plate 111, a first lens support platform 112, two slide rails 113, and a second lens support platform 114. The first lens support platform 112 can be positioned from one side of the plate 111 (e.g., Figure 3The second lens support platform 114 extends upward from the other side of the plate 111 (as shown on the left). Figure 3 (As shown on the right) extending upwards. In other words, the first lens support platform 112 and the second lens support platform 114 are respectively disposed on opposite sides of the plate 111, and a central axis of the first lens support platform 112 and a central axis of the second lens support platform 114 are parallel to each other. Two slide rails are disposed on the plate 111 at intervals and parallel to each other. The central axes of the first lens support platform 112 and the second lens support platform 114 are both perpendicular to a central axis of each slide rail 113, and the first lens support platform 112 and the second lens support platform 114 are spaced apart from each slide rail 113. In some embodiments, such as Figure 3 As shown, a cross-section of each slide rail 113 is semi-circular.

[0057] Figure 5 This is a side view of the docking lens in the first embodiment of the lens-type fiber array stacking structure of the present invention. Figure 6 This is a rear view schematic diagram of the docking end lens group in the first embodiment of the lens-type fiber array stacking structure of the present invention.

[0058] Please also refer to Figures 1 to 6 The mating lens assembly 120 is disposed on the first lens support platform 112 of the substrate 110. A first support portion 121 is provided at one bottom of the mating lens assembly 120. In some embodiments, the first support portion 121 can be correspondingly positioned against the first lens support platform 112, thereby aligning and positioning the mating lens assembly 120.

[0059] Figure 7 This is a front view schematic diagram of a fiber array module in the first embodiment of the lens-type fiber array stacking structure of the present invention. Figure 8 This is a three-dimensional schematic diagram of a fiber array module in the first embodiment of the lens-type fiber array stacking structure of the present invention. Figure 9 This is a front view schematic diagram of the alignment and positioning of two fiber array modules in the first embodiment of the lens-type fiber array stacking structure of the present invention.

[0060] Please refer to the following at the same time: Figures 1 to 9 One of the two fiber array modules 130 (e.g., Figure 9 As shown, the fiber array module 130 located above is flipped upside down to interact with another fiber array module 130 (such as...). Figure 9 As shown, the fiber optic array module 130 located below is coupled to be mounted on the substrate 110. Figure 7 and Figure 8As shown, each fiber array module 130 has a carrier plate 131 and a plurality of optical fibers 132. An upper surface of the carrier plate 131 has a receiving portion 133, and a lower surface of the carrier plate 131 opposite to the upper surface is provided with a protruding rib 134. The plurality of optical fibers 132 are arranged in an array and stacked in the receiving portion 133, and a central axis of each optical fiber 132 is parallel to a central axis of each slide rail 113. Please refer to Figure 3 and Figure 9 wherein the protruding rib 134 of one fiber array module 130 (the lower fiber array module 130) is disposed between the two slide rails 113. Two side edges of the protruding rib 134 are respectively abutted against the two slide rails 113 for alignment and positioning. In some embodiments, the two side edges of the protruding rib 134 are inclined surfaces 135, each inclined surface 135 is inclined toward the center of the protruding rib 134 and abutted against each slide rail 113. By the arrangement of the inclined surfaces 135 and the interaction with the two slide rails 113 having a semicircular cross section, the fiber array module 130 can be automatically aligned and positioned.

[0061] Figure 10 A front view schematic diagram of adding the number of stacked layers of two fiber array modules in the first embodiment of the lens-type fiber array stacking structure of the present application. In some embodiments, the number of optical fibers 132 or the number of stacked layers can be increased by modifying (enlarging) the size of the receiving portion 133.

[0062] In some embodiments, the carrier plate 131 is provided with a first passive alignment portion 136 and a second passive alignment portion 137 on two side edges of the receiving portion 133, respectively. Please refer to Figure 9 wherein the first passive alignment portion 136 of one fiber array module 130 (the upper fiber array module 130) is aligned and positioned with the second passive alignment portion 137 of another fiber array module (the lower fiber array module 130), and the second passive alignment portion 137 of one fiber array module 130 (the upper fiber array module 130) is aligned and positioned with the first passive alignment portion 136 of another fiber array module 130 (the lower fiber array module 130). In some embodiments, the first passive alignment portion 136 and the second passive alignment portion 137 can be a male-female matching. For example, in this embodiment, the first passive alignment portion 136 can be a groove, and the second passive alignment portion 137 can be a protruding strip, but not limited thereto, and vice versa. In some embodiments, the first passive alignment portion 136 being a groove can be a V-shaped groove, a trapezoidal groove, or a semicircular groove, and the second passive alignment portion 137 being a protruding strip can be a V-shaped protruding strip corresponding to the V-shaped groove, a trapezoidal protruding strip corresponding to the trapezoidal groove, or a semicircular protruding strip corresponding to the semicircular groove, but not limited thereto. Therefore, by the arrangement of the first passive alignment portion 136 and the second passive alignment portion 137, two fiber array modules 130 can be automatically aligned and positioned.

[0063] Therefore, by the interaction of the first abutting portion 121 abuttingly positioning against the first lens abutting platform 112, the butt-joint end lens group 120 can be automatically aligned and positioned, and by the interaction of the slope 135 and the two slide rails 113, the fiber array module 130 can be automatically aligned and positioned, and the two fiber array modules 130 and the butt-joint end lens group 120 are combined by an optical matching glue 140 to reduce reflection, so that the fiber array module 130 and the butt-joint end lens group 120 can achieve the effect of being passively positioned at the correct focal length.

[0064] Figure 11 A side view of a second embodiment of the lensed fiber array stack structure of the present application. Figure 12 A side view of a chip end lens of the second embodiment of the lensed fiber array stack structure of the present application. Figure 13 A perspective view of a chip end lens of the second embodiment of the lensed fiber array stack structure of the present application.

[0065] The lensed fiber array stack structure 200 of the second embodiment is similar to the lensed fiber array stack structure 100 of the first embodiment, and the difference is that a chip end lens group is added, and the components of the lensed fiber array stack structure 200 of the second embodiment that are the same as those of the lensed fiber array stack structure 100 of the first embodiment are given the same component numbers, and their functions and structures will not be described in detail.

[0066] Referring to Figure 11 , the lensed fiber array stack structure 200 of the second embodiment includes a substrate 110, a butt-joint end lens group 120, two fiber array modules 130, and a chip end lens group 240; wherein the substrate 110, the butt-joint end lens group 120, and the two fiber array modules 130 of the second embodiment are the same as those of the first embodiment, and will not be described in detail. In some embodiments, the butt-joint end lens group 120 and the chip end lens group 240 each contain a plurality of lenses 300, which are arranged in an array corresponding to the fibers 132 of the fiber array modules 130, and are known technologies, so they will not be described in detail.

[0067] Referring to Figure 12 and Figure 13 , a bottom of the chip end lens group 240 has a second abutting portion 241. The second abutting portion 241 can be abuttingly positioned against a second lens abutting platform 114.

[0068] In some embodiments, as Figure 12 and Figure 13As shown, the chip-end lens group 240 can further include a prism portion 242. The prism portion 242 can be disposed on a side of the chip-end lens group 240 opposite the mating-end lens group 120, to change the path of the light beam by total reflection. For example, as shown Figure 12 and Figure 13 The light beam passes through the prism portion 242 and is reflected upward by total reflection. In some embodiments, the prism portion 242 can be replaced by a lens to converge the light beam for edge coupling. Thus, in this embodiment, the mating-end lens group 120 can be connected to an external connector (not shown), and the chip-end lens group 240 can be connected to a chip (not shown), thereby completing the light beam transmission and achieving the desired effect.

[0069] In summary, the lensed fiber array stack structure 100, 200 of the present application can be passively aligned by the arrangement of the convex ribs 134 (inclined surfaces 135) of the fiber array module 130 corresponding to the two slide rails 113, the concave-convex matching arrangement between the first passive alignment portion 136 and the second passive alignment portion 137 of the two fiber array modules 130, the arrangement of the first abutting portion 121 of the mating-end lens group 120 and the first lens abutting platform 112 of the substrate 110, and / or the arrangement of the second abutting portion 241 of the chip-end lens group 240 and the second lens abutting platform 114 of the substrate 110, to complete passive alignment and positioning, so that the fiber array module 130 and the lens group (including the mating-end lens group 120 and / or the chip-end lens group 240) can be passively positioned on the correct focal length during assembly, to improve yield and reduce cost.

[0070] The above describes the preferred embodiments of the present application. It should be noted that those skilled in the art can make several improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered within the scope of protection of the present application.

Claims

1. A lensed fiber array stack structure, characterized by, The application relates to a substrate, a lens group, and two fiber array modules. The substrate comprises a plate body, a first lens supporting platform and two slide rails, the first lens supporting platform extends upwards from one side of the plate body, the two slide rails are arranged on the plate body in parallel and at intervals, the central axis of the first lens supporting platform is perpendicular to the central axis of each slide rail, and the first lens supporting platform is arranged at intervals from each slide rail. The lens group is arranged on the first lens supporting platform of the substrate, the bottom of the lens group is provided with a first supporting part which is positioned and supported on the first lens supporting platform. Each fiber array module comprises a supporting plate and a plurality of fibers, the upper surface of the supporting plate is provided with a containing part, the lower surface of the supporting plate opposite to the upper surface is provided with a convex rib, the plurality of fibers are arranged in an array in the containing part, and the central axis of each fiber is parallel to the central axis of each slide rail. The convex rib of one fiber array module is arranged between the two slide rails, and the two side edges of the convex rib are respectively abutted against the two slide rails to be positioned and aligned.

2. The lensed fiber array stack structure of claim 1, wherein, The first passive alignment part of one fiber array module is positioned and aligned with the second passive alignment part of another fiber array module, and the second passive alignment part of one fiber array module is positioned and aligned with the first passive alignment part of another fiber array module.

3. The lensed fiber array stack structure of claim 1, wherein, The two side edges of the convex rib are inclined surfaces which are inclined towards the center of the convex rib and abut against the slide rails.

4. The lensed fiber array stack structure of claim 3, wherein, The first passive alignment part is a groove, and the second passive alignment part is a convex strip.

5. The lensed fiber array stack structure of claim 1, wherein, The groove is a V-shaped groove, a trapezoidal groove or a semicircular groove, and the convex strip is a V-shaped convex strip corresponding to the V-shaped groove, a trapezoidal convex strip corresponding to the trapezoidal groove or a semicircular convex strip corresponding to the semicircular groove.

6. The lensed fiber array stack structure of claim 1, wherein, The two fiber array modules and the lens group are combined by an optical matching glue.

7. The lensed fiber array stack structure of claim 6, wherein The substrate further comprises a second lens supporting platform which extends upwards from the side of the plate body opposite to the side provided with the first lens supporting platform.

8. The lensed fiber array stack structure of claim 1, wherein, The application further relates to a chip end lens group, and the bottom of the chip end lens group is provided with a second supporting part which is positioned and supported on the second lens supporting platform.

9. The lensed fiber array stack structure of claim 7, wherein, The section of each slide rail is semicircular.

10. The lensed fiber array stack structure of claim 6, wherein, The chip end lens group further comprises a prism part which is arranged on the side of the chip end lens group opposite to the side of the lens group. The central axis of the second lens supporting platform is perpendicular to the central axis of each slide rail, and the second lens supporting platform is arranged at intervals from each slide rail.

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