A high-precision coupling device for active fiber array

Abstract

The application discloses a high-precision active optical fiber array coupling device, characterized in that the device comprises a base provided with an included angle, a micro-motion motor is arranged in the included angle, a clamp mechanism is arranged on the base, a pressing strip and a differential knob for controlling the pressing force of the pressing strip are arranged on the clamp mechanism, a cover plate is arranged below the pressing strip, a Y-shaped positioning fork arranged on the clamp mechanism is further arranged below the cover plate, an adjusting mechanism is further arranged on the base, a fiber positioning block is arranged on the adjusting mechanism, and a V-shaped groove or a U-shaped groove filled with glue is horizontally connected between the fiber positioning block and the positioning fork.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of optical fiber communication transmission, in particular to a coupling device of a high-precision active optical fiber array. BACKGROUND

[0002] With the rapid development of 5G commercialization and the data center market, optical modules are widely used in optical network transmission. As an important connector in the wireless communication bearer network, the active silicon optical interconnection assembly MT-FA has been widely used in 40 / 100G optical modules. The high-precision FA is the most core optical device of the active silicon optical interconnection assembly MT-FA, which uses the front-end parallel distributed bare optical fiber to be coupled with the laser chip one by one. In order to ensure that the optical signal can be stably transmitted with low loss, the spacing error between the optical fiber and the U-shaped groove assembly is required to be less than 0.5 um. However, the traditional fiber arranging method has the problem of low assembly precision when manufacturing the optical fiber array. Especially in the case that the glue does not completely penetrate the V-shaped groove or the U-shaped groove, the optical fiber ribbon is easy to be pulled out, resulting in reduced bonding strength. SUMMARY

[0003] In order to overcome the defects of the prior art, the application aims to provide a coupling device of a high-precision active optical fiber array.

[0004] The coupling device of the high-precision active optical fiber array is characterized in that: a base with an included angle is arranged inside, a micro motor is arranged in the included angle, a clamp mechanism is arranged on the base, a pressing strip and a micro differential knob for controlling the force of the pressing strip are arranged on the clamp mechanism, a cover plate is arranged below the pressing strip, a Y-shaped positioning fork arranged on the clamp mechanism is further arranged below the cover plate, an adjusting mechanism is further arranged on the base, a fiber positioning block is arranged on the adjusting mechanism, and a V-shaped groove or a U-shaped groove filled with glue is horizontally connected between the fiber positioning block and the positioning fork.

[0005] As a preferred mode, the adjusting mechanism and the clamp mechanism are detachably arranged on the base.

[0006] As a preferred mode, the transparent pressing strip is arranged below the cover plate, and a fiber array is arranged in the V-shaped groove or the U-shaped groove below the cover plate, and the spacing between single fibers of the fiber array is 250 um.

[0007] As a preferred mode, the fiber positioning block horizontally pushes the fiber array to move and is detachably arranged on the adjusting mechanism.

[0008] As a preferred mode, the V-shaped groove or the U-shaped groove is provided with at least two channels, and the spacing between the channels is 127 um.

[0009] As a preferred mode, the pressing strip is a transparent pressing strip.

[0010] As a preferred way, the included angle is less than 45°.

[0011] As a preferred way, the clamp mechanism is in a lever structure, and the micro-division knob is arranged on both sides of the clamp mechanism.

[0012] The application provides a high-precision active optical fiber array coupling device, which utilizes a micro-motion motor device to provide high-frequency micro-vibration, so that glue flows uniformly between a V-shaped groove or a U-shaped groove, an optical fiber and a cover plate, and the adhesion of each component of the optical fiber array is ensured to be more firm, and the problem of air glue in traditional glue loading can be effectively avoided. Secondly, the coupling device adopts a horizontal fiber pushing mode, compared with the traditional fiber arranging mode which has low efficiency and low assembly precision in the production of the optical fiber array, the application only needs to replace a matching fiber belt positioning block in the fiber arranging production of different types of optical fiber arrays, so that fine positioning can be realized, and the application has the advantages of high assembly precision, high stability and high efficiency. Finally, the whole adopts a modular design idea, has a simple structure, can be disassembled and assembled twice and put into other processing procedures for use, effectively improves the process efficiency and assembly precision, reduces the active optical fiber array production cost, and has higher coupling efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a schematic view of the embodiment of the application;

[0014] Figure 2 is a schematic view of the embodiment of the application; Figure 1 is an enlarged schematic view of A in the figure;

[0015] Figure 3 is a schematic view of the embodiment of the application;

[0016] In the figure, the serial number and name are as follows: 1. base 2. micro-motion motor 3. clamp mechanism 4. pressing strip 5. micro-division knob 6. positioning fork 7. adjusting mechanism 8. fiber belt positioning block 9. V-shaped groove or U-shaped groove DETAILED DESCRIPTION

[0017] The application will be further described in detail below in combination with the embodiments and the accompanying drawings.

[0018] A high-precision active optical fiber array coupling device, referring to Figures 1 to 3, including the base 1 with an included angle, the micro motor 2 is arranged in the included angle; the base 1 is provided with a clamp mechanism 3, the clamp mechanism 3 is provided with a pressing strip 4 and a differential knob 5 for controlling the force of the pressing strip 4, the pressing strip 4 is provided with a cover plate, and a Y-shaped positioning fork 6 arranged on the clamp mechanism is further arranged below the cover plate; the base 1 is further provided with an adjusting mechanism 7, the adjusting mechanism is provided with a fiber positioning block 8, and a V-shaped groove or U-shaped groove 9 filled with glue is horizontally connected between the fiber positioning block 8 and the positioning fork 6. The micro motor 2 is installed in the base 1, can produce high-frequency micro vibration, and makes the glue flow uniformly on the V-shaped groove or U-shaped groove 9, the optical fiber and the cover plate; when the micro motor 2 vibrates at high frequency, the lower part of the included angle is fixed, and the upper part of the included angle can vibrate slightly with the vibration of the micro motor. The clamp mechanism 3 and the adjusting mechanism 7 are correspondingly arranged on the base 1 in the horizontal direction, the fiber positioning block 8 is arranged on the adjusting mechanism, one end of the V-shaped groove or U-shaped groove 9 is connected to the fiber positioning block 8, and the other end is arranged in the fork of the positioning fork 6, the cover plate is arranged below the pressing strip 4, so that the front end faces of the V-shaped groove or U-shaped groove 9 and the cover plate are in the same plane, and the exposed optical fiber is not blocked, and the foolproof effect is achieved. The clamp mechanism 3 is symmetrically arranged at both ends, and the differential button device is arranged at both ends, so that the force of the pressing strip 4 can be accurately controlled to adjust the position of the optical fiber and the cover plate, ensure that the single optical fiber is uniformly distributed in each groove after the fiber arrangement is completed, and the left and right spacings are consistent.

[0019] In an embodiment, referring to Figure 1 and Figure 2 , the adjusting mechanism 7 and the clamp mechanism 3 can be detachably arranged on the base 1. The adjusting mechanism 7 module clamps the fiber positioning block 8 module to move left or right for adjustment, and the whole adopts a modular design idea, divides the assembly system of the present application into two sub-mother modules, and after assembly is completed, the sub-modules, i.e. the adjusting mechanism 7, the fiber positioning block 8 and the assembled clamp body, can be disassembled for the next process. The number of sub-modules is large, and the number of mother modules composed of the base 1 and the micro vibration motor is small, so that the production efficiency can be improved, and the total cost of the clamp investment can be saved.

[0020] In an embodiment, referring to Figure 1 and Figure 3 , the transparent pressing strip is provided with a cover plate, a fiber array is arranged in the V-shaped groove or U-shaped groove below the cover plate, and the spacing between single fibers of the fiber array is 250um; the V-shaped groove or U-shaped groove 9 is provided with at least two channels with a spacing of 127um. The single fibers are closely arranged, fine positioning is realized, and the accuracy and stability are higher.

[0021] In an embodiment, referring to Figure 1 and Figure 2The fiber positioning block 8 horizontally pushes the fiber array to move and is detachably arranged on the adjusting mechanism 7. The fiber positioning block 8 adopts the horizontal fiber pushing mode, different fiber positioning blocks 8 are replaced according to the fiber array arrangement type, and the problems of low efficiency and low assembly precision in the traditional fiber arrangement mode during the manufacturing of the fiber array can be solved.

[0022] In an embodiment, referring to Figure 1 and Figure 3 The transparent pressing strip 4 enables the operator to ensure that the optical fibers are correctly arranged in the V-shaped groove or U-shaped groove 9 and to confirm whether the glue effectively fills the entire groove.

[0023] In an embodiment, referring to Figure 1 The included angle is less than 45°, and too large or too small included angle can cause uneven glue adhesion, ensure that the adhesion of each component of the fiber array is more firm, and effectively avoid the air glue defect.

[0024] In an embodiment, referring to Figure 1 and Figure 2 The clamp mechanism 3 is in a lever structure, and the micro differential knob 5 is arranged on both sides of the clamp mechanism 3. The clamp mechanism 3 is suitable for the manufacturing requirements of various types of fiber arrays, controls the pressing and lifting of the transparent pressing strip 4 through the lever structure, and accurately controls the pressing and lifting force of the transparent pressing strip 4 through the high-precision micro differential knob 5, so as to facilitate the adjustment of the positions of the optical fibers and the cover plate, ensure that the optical fibers are accurately and uniformly arranged in the V-shaped groove or U-shaped groove 9, and keep the left and right spacings consistent.

[0025] The above is the description of the coupling device of the high-precision active fiber array, which is used to help understand the present application, but the embodiments of the present application are not limited by the above embodiments, any change, modification, replacement, combination and simplification without departing from the principle of the present application should be equivalent replacement, and all are included in the protection scope of the present application.

Claims

1. A high precision active fiber array coupling device, characterized by: The base is internally provided with an included angle, and a micro motor is internally arranged in the included angle; a clamp mechanism is mounted on the base, a pressing strip and a micro differential knob for controlling the pressing strip strength are arranged on the clamp mechanism, a cover plate is arranged under the pressing strip, and a Y-shaped positioning fork arranged on the clamp mechanism is further arranged below the cover plate; an adjusting mechanism is further arranged on the base, a fiber positioning block is mounted on the adjusting mechanism, and a V-shaped groove or U-shaped groove filled with glue is horizontally connected between the fiber positioning block and the positioning fork; The fiber positioning block horizontally pushes the fiber array to move and is detachably arranged on the adjusting mechanism. The clamp mechanism is in a lever structure, and the micro differential knob is arranged on both sides of the clamp mechanism.

2. The high precision active fiber array coupling device of claim 1, wherein: The adjusting mechanism and the clamp mechanism are detachably arranged on the base.

3. The high precision active fiber array coupling device of claim 1, wherein: The cover plate is arranged under the pressing strip, the fiber array is arranged in the V-shaped groove or U-shaped groove below the cover plate, and the spacing between single fibers of the fiber array is 250 um.

4. The high precision active fiber array coupling device of claim 1, wherein: The V-shaped groove or U-shaped groove is provided with at least two grooves, and the spacing between the channels is 127 um.

5. The high precision active fiber array coupling device of claim 1, wherein: The pressing strip is a transparent pressing strip.

6. The high precision active fiber array coupling device of claim 1, wherein: The included angle is less than 45°.

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