Coupling tool and coupling method of coaxial expanded beam contact

Abstract

The present invention relates to the technical field of optical fiber connectors, and more specifically to a coupling tool and a coupling method for a coaxial beam expansion contact, comprising a rotating driver, a crimping component, and a displacement adjustment component; the rotating driver is connected to a standard jumper; the displacement adjustment component is connected to a jumper to be tested; the standard jumper comprises a first connector and a first beam expansion lens component, and the first connector and the first beam expansion lens component are relatively fixed; the jumper to be tested comprises a second connector and a second beam expansion lens component. The coupling tool proposed in the present invention can make the standard jumper for testing and the jumper to be tested be in different positions in the circumferential direction during the debugging process, and realize the performance monitoring under different docking states in the circumferential direction during the processing process, so that the lower limit of the product coupling performance can be controlled, so that the product performance consistency is high, and the qualified rate of the beam expansion optical fiber connector contact products is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of optical fiber connectors, and in particular to a coupling tool and a coupling method for a coaxial beam expansion contact. Background Art

[0002] Expanded beam fiber connectors can reduce the impact of axial deviation on optical performance and achieve contactless transmission by expanding the light pass area and collimating the light beam. They are resistant to the environment, anti-pollution, and have stable connections. As the transmission capacity of optical fiber communication systems continues to increase, the use of expanded beam fiber connectors in application scenarios such as field communications and emergency communications is increasing.

[0003] In the process of using the beam expanding fiber optic connector, the use of the beam expanding optical contact, that is, the effect of using the optical contact to process into an optical jumper, will directly affect the overall connector, among which the coupling process is the key to realize the jumper processing. The specific process is to continuously fine-tune the relative position of the beam expanding lens and the optical fiber end face, and implement the method of monitoring the jumper performance indicators to determine and solidify the relative position when the performance indicators reach the optimal level. However, in the actual production of jumpers, it was found that the performance of the same batch of products was poor when connected to each other.

[0004] The applicant has found that the cause of the above-mentioned problem is that during the process of fixing the key angles of the test standard jumper and the product jumper, the performance indicators under the docking state at different angles cannot be monitored, resulting in poor performance when docking with each other between products in the same batch. Summary of the invention

[0005] In view of the technical problems existing in the coupling of coaxial beam expansion contacts in the prior art, a first aspect of the present invention provides a coupling tool for coaxial beam expansion contacts, comprising a rotation driver, a crimping component and a displacement adjustment component;

[0006] The rotary drive is connected to a standard jumper wire;

[0007] The displacement adjustment component is connected to the jumper to be tested;

[0008] The standard jumper includes a first connector and a first beam expanding lens component, and the first connector and the first beam expanding lens component are relatively fixed;

[0009] The jumper to be tested includes a second connector and a second beam expanding lens component;

[0010] A coupling performance testing component, connected to the standard jumper and the jumper to be tested, and used to detect the coupling performance between the standard jumper and the jumper to be tested;

[0011] The crimping component includes at least one V-shaped groove, and the first beam expanding lens component and the second beam expanding lens component are placed in the V-shaped groove, so that the axes of the first beam expanding lens component and the second beam expanding lens component coincide with each other;

[0012] The rotation driver is used to drive the first connector and the first beam expanding lens component to rotate synchronously around the axis of the first beam expanding lens component, the crimping component fixes the second beam expanding lens component to a predetermined position, so that the first beam expanding lens component rotates to any angle relative to the second beam expanding lens component, and the coupling performance testing component is used to detect the coupling performance of the standard jumper and the jumper to be tested at any angle;

[0013] When the first beam expanding lens component and the second beam expanding lens component are at a predetermined angle, the displacement adjustment component is used to adjust the spatial position of the second connector, so that the position state between the second beam expanding lens component and the second connector changes, so that the coupling performance of the standard jumper and the jumper to be tested at any angle meets the target performance.

[0014] Preferably, the V-shaped groove is constructed to include three limiting surfaces, and the three limiting surfaces are respectively located at positions where the circumscribed circle contours of the first beam expanding lens component and the second beam expanding lens component are tangent.

[0015] Preferably, the crimping component comprises a support seat and two pressing blocks, the top of the support seat is provided with at least one V-shaped groove, the length direction of the V-shaped groove is parallel to the axial direction of the rotary driver, and the pressing block is detachably arranged on the top of the support seat to cover the V-shaped groove;

[0016] The first pressing block is used to cover the first beam expanding lens component, and the second pressing block is used to cover the second beam expanding lens component.

[0017] Preferably, the upper end surface of the support seat is provided with two limiting grooves, and the bottom of the pressure block is provided with a protrusion, the protrusion matches the size of the limiting groove, the length direction of the limiting groove is perpendicular to the length direction of the V-shaped groove, and the pressure block is fixedly connected to the support seat by screws.

[0018] Preferably, the rotation driver comprises a tail limiting component, a driving component and a head limiting component, a first end of the driving component is connected to the tail limiting component, a second end is connected to the head limiting component, and the driving component can drive the head limiting component to rotate;

[0019] The head limiting component includes a supporting seat and a pressing cap, the pressing cap is used to fix the first connector of the standard jumper to the supporting seat, and the tail limiting component includes a limiting channel, the axis of the limiting channel coincides with the axis of the first connector.

[0020] Preferably, a supporting groove is provided on the supporting seat, a limiting slot is provided on the supporting groove, the first connector is arranged in the supporting groove and is circumferentially positioned by the limiting slot, and the pressure cap is hingedly connected to the supporting seat for fixing the first connector to the supporting groove.

[0021] Preferably, the displacement adjustment component includes a first clamp block, a second clamp block, a cover plate and a connecting seat, the connecting seat is connected to the multi-axis displacement device through a mounting plate, the first clamp block and the second clamp block are connected to the connecting seat, and a clamping space for clamping the second connector is formed between the first clamp block and the second clamp block; wherein the connection between the second connector and the second beam expansion lens component is outside the clamping space.

[0022] Preferably, the first clamping block is provided with a first arcuate groove, the second clamping block is provided with a second arcuate groove, the first arcuate groove and the second arcuate groove constitute the clamping space, and the first clamping block is further provided with a pigtail groove, which is coaxial with the first arcuate groove.

[0023] A second aspect of the present invention provides a technical solution, a method for coupling a coaxial beam expansion contact, using the above-mentioned coupling tool for the coaxial beam expansion contact, comprising the following steps:

[0024] Step 1, install the standard jumper to the rotation driver, install the jumper to be tested to the displacement adjustment component, and connect the standard jumper and the jumper to be tested to the coupling performance test component;

[0025] Step 2: The standard jumper is driven to rotate by a rotary driver, and the coupling state between the standard jumper and the jumper to be tested is detected in real time by a coupling performance test component, and a coupling value data set {A} corresponding to each angle is obtained;

[0026] Step 3, according to the coupling data between the standard jumper and the jumper to be tested, rotating the standard jumper so that the standard jumper stops at a first angle, wherein the coupling value Amax corresponding to the first angle is max{A};

[0027] Step 4, adjusting the position between the second beam expansion lens component and the second connector by means of a displacement adjustment component so that the coupling value Amax corresponding to the first angle reaches a minimum value;

[0028] Step 5: pre-fix the second beam expansion lens component and the second connector, take out the jumper to be tested, and complete the coupling of the current jumper to be tested.

[0029] Preferably, in step 4, it includes:

[0030] Step 41, controlling the second connector to move along the axis direction of the second beam expanding lens component so that the end surface of the second connector is located in the focal plane of the second beam expanding lens component;

[0031] Step 42, controlling the second connector to swing up / down to form a data set {B} on the current swing trajectory, and causing the second connector to stop at a position corresponding to the minimum value in the data set {B};

[0032] Step 43, control the second connector to swing left / right, form a data set {C} on the current swing trajectory, and make the second connector stop at the position corresponding to the minimum value in the data set {C}.

[0033] Compared with the prior art, the advantages of the present invention are:

[0034] The coupling tool proposed in the present invention connects the standard jumper wire through a rotating driver, connects the jumper wire to be tested through a displacement adjustment component, and the beam expanding lenses of the standard jumper wire and the jumper wire to be tested are fixed by a crimping component to maintain coaxiality to ensure the coupling state of the standard jumper wire and the jumper wire to be tested. The rotation of the standard jumper wire is controlled by the rotating driver, so that the standard jumper wire for testing and the jumper wire to be tested can be placed in different positions in the circumferential direction during the debugging process, and performance monitoring can be achieved in different docking states in the circumferential direction during the processing process. In this way, the lower limit of the product coupling performance can be controlled, the product performance consistency is high, and the qualified rate of the expanded beam optical fiber connector contact products is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings are not intended to be drawn to scale. In the accompanying drawings, each identical or nearly identical component shown in each figure may be represented by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings.

[0036] Figure 1 It is a schematic diagram of the docking state of two contacts of the optical fiber connector.

[0037] Figure 2 FIG. 1 is a simplified diagram of a coupling tool for a coaxial expanded beam contact according to the present invention.

[0038] Figure 3 It is a structural schematic diagram of a coupling tool for a coaxial beam expansion contact piece shown in the present invention.

[0039] Figure 4 It is an exploded view of a coupling tool for a coaxial expanded beam contact shown in the present invention.

[0040] Figure 5 It is a structural schematic diagram of the rotary driver shown in the present invention.

[0041] Figure 6It is a schematic structural diagram of the crimping component shown in the present invention.

[0042] Figure 7 Schematic diagram of the displacement adjustment component shown in the present invention. DETAILED DESCRIPTION

[0043] In order to better understand the technical content of the present invention, specific embodiments are given and described as follows in conjunction with the accompanying drawings.

[0044] Combination Figure 1 As shown, the optical fiber will form different optical paths between the beam expander lens and the connector. When the two connectors are docked, for example, a certain angle of refraction will be generated between the first optical path 103 and the second optical path 104 in the standard jumper 100, and a certain angle of refraction will also be generated between the third optical path 203 and the fourth optical path 204 in the jumper 200 to be tested. Currently, when the standard jumper 100 is used for optical coupling testing, the second connector 202 and the second beam expander lens component 201 are adjusted so that the position states of the two meet the requirements of optical loss. However, due to the lack of monitoring of the optical coupling performance at different angles, the angles of the third optical path 203 and the fourth optical path 204 in each jumper 200 to be tested are different. Therefore, when two jumpers 200 to be tested are docked with each other, performance may be out of control.

[0045] like Figure 2 As shown, it should be understood that the standard jumper 100 includes a first connector 101 and a first beam expanding lens component 102, and the first connector 101 and the first beam expanding lens component 102 are relatively fixed, that is, the performance of the standard jumper 100 is fixed, and the jumper 200 to be tested includes a second connector 202 and a second beam expanding lens component 201, and the relative positions of the second connector 202 and the second beam expanding lens component 201 are to be fixed, that is, the performance of the jumper 200 to be tested is not yet fixed and needs to be adjusted to the optimal state.

[0046]

Coupling tool for coaxial expanded beam contacts

[0047] Therefore, this application aims to solve the above problems, combining Figure 3 and Figure 4 As shown, the first aspect of the present invention proposes a coupling tool for a coaxial beam expansion contact, including a rotation driver 10, a crimping component 20, a displacement adjustment component 30 and a coupling performance testing component. The rotation driver 10 is connected to a standard jumper 100, the displacement adjustment component 30 is connected to a jumper to be tested 200, and the crimping component 20 can limit the beam expansion lens components of the standard jumper 100 and the jumper to be tested 200 so that the axes of the two coincide.

[0048] In this way, in order to ensure the accuracy and stability of optical signal transmission during testing, the rotating driver 10 can drive the standard jumper 100 to rotate to different angles to monitor the coupling state of the standard jumper 100 and the jumper to be tested 200 at any angle, and adjust the relative positions of the second connector 202 and the second beam expansion lens component 201 in the jumper to be tested 200 at the worst coupling state position, so that the jumper to be tested 200 meets the maximum light loss value requirement.

[0049] It is understandable that each jumper wire 200 to be tested is produced according to this standard, and the worst performance of the jumper wire 200 to be tested is controlled within the standard range. Therefore, when any two jumpers to be tested 200 are coupled to each other, their optical loss values ​​meet the requirements, and the problem of performance out-of-range can be avoided.

[0050] Furthermore, the coupling performance testing component is connected to the standard jumper 100 and the jumper to be tested 200 to detect the coupling performance between the standard jumper 100 and the jumper to be tested 200.

[0051] In an optional embodiment, an optical power meter or OTDR is used to measure the insertion loss between the standard jumper 100 and the jumper to be tested 200 to ensure that it is within a specified range, wherein the smaller the insertion loss, the better the transmission performance of the optical fiber.

[0052] Combination Figure 6 As shown, the crimping component 20 includes at least one V-groove 215 , and the first beam expanding lens component 102 and the second beam expanding lens component 201 are placed in the V-groove 215 so that the axes of the first beam expanding lens component 102 and the second beam expanding lens component 201 coincide with each other.

[0053] In this way, by controlling the axes of the first beam expanding lens component 102 and the second beam expanding lens component 201 to coincide during coupling, the standard jumper 100 can maintain a good coupling posture during rotation, thereby reducing coupling performance changes caused by mechanical errors during coupling and docking.

[0054] Further, combined with Figure 2 As shown, the rotation driver 10 is used to drive the first connector 101 and the first beam expanding lens component 102 to rotate synchronously around the axis of the first beam expanding lens component 102, the crimping component 20 fixes the second beam expanding lens component 201 to a predetermined position, so that the first beam expanding lens component 102 can be rotated to any angle relative to the second beam expanding lens component 201, and the coupling performance testing component is used to detect the coupling performance of the standard jumper 100 and the jumper to be tested 200 at any angle.

[0055] In this way, by rotating the standard jumper 100 for one circle, the coupling performance of the standard jumper 100 and the jumper to be tested 200 at any angle can be obtained, so that the coupling performance evaluation of the two is more comprehensive and effective.

[0056] Furthermore, when the first beam expanding lens component 102 and the second beam expanding lens component 201 are at a predetermined angle, the displacement adjustment component 30 is used to adjust the spatial position of the second connector 202, so that the position state between the second beam expanding lens component 201 and the second connector 202 changes, so that the coupling performance of the standard jumper 100 and the jumper to be tested 200 at any angle meets the target performance.

[0057] The predetermined angle is an angle corresponding to the worst coupling performance of the standard jumper 100 and the jumper to be tested 200.

[0058] It can be understood that since the position state between the second beam expanding lens component 201 and the second connector 202 directly affects the optical transmission performance of the jumper wire to be tested 200, and the docking coupling of the jumper wire to be tested 200 and the standard jumper wire 100 at different angles may have a large performance deviation, therefore, when taking the angular position corresponding to the worst coupling performance as a reference, the performance of the jumper wire to be tested 200 is adjusted at this angle to make the coupling performance meet the standard, then at other angular positions, the jumper wire to be tested 200 still meets the requirements, and any two jumpers to be tested 200 produced based on this reference will not have performance deviation when coupled and docked.

[0059] Combination Figure 6 As shown, the V-shaped groove 215 is constructed to include three limiting surfaces, and the three limiting surfaces are respectively located at the tangent positions of the circumscribed circle contours of the first beam expanding lens component 102 and the second beam expanding lens component 201.

[0060] In this way, the first beam expanding lens component 102 and the second beam expanding lens component 201 can be limited by three limiting surfaces, namely three contact lines. This limiting method can reduce the friction loss when the first beam expanding lens component 102 rotates while ensuring reliable limiting (the standard jumper 100 needs to continue to be used as a standard part, and friction deformation of the standard jumper 100 should be avoided as much as possible to maintain the original physical properties of the standard jumper 100).

[0061] Combination Figure 6 As shown, in an optional embodiment, the crimping component 20 includes a support seat 21 and two pressing blocks 22. The top of the support seat 21 is provided with at least one V-shaped groove 215. The length direction of the V-shaped groove 215 is parallel to the axial direction of the rotating driver 10. The pressing block 22 is detachably arranged on the top of the support seat 21 to cover the V-shaped groove 215.

[0062] Specifically, the support seat 21 includes a bottom seat body 211 and an upper stepped support body 212. The seat body 211 is provided with a waist-shaped hole, which can be installed in a suitable position and is conducive to fine-tuning the position. The stepped support body 212 can improve the strength of the structure to meet usage requirements.

[0063] Specifically, the top of the seat body 211 is provided with a plurality of V-shaped grooves 215, optionally, as Figure 6 The top of the seat body 211 is provided with five V-shaped grooves 215. When one V-shaped groove 215 is worn, other V-shaped grooves 215 can be replaced for use. Preferably, the inner wall of the V-shaped groove 215 has a ceramic coating to improve the wear resistance.

[0064] Combination Figure 6 As shown, two pressing blocks 22 are provided, the first pressing block is used to cover the first beam expanding lens component 102, and the second pressing block is used to cover the second beam expanding lens component 201, and they are fixed by screws respectively.

[0065] Optionally, the pressing block 22 may be made of ceramic material.

[0066] Furthermore, two limiting grooves 213 are provided on the upper end surface of the support seat 21, and a protrusion 222 is provided at the bottom of the pressure block 22. The protrusion 222 matches the size of the limiting groove 213. The length direction of the limiting groove 213 is perpendicular to the length direction of the V-shaped groove 215. The pressure block 22 is fixedly connected to the support seat 21 by screws.

[0067] In this way, when the first beam expanding lens component 102 and the second beam expanding lens component 201 are both in the predetermined positions in the V-groove 215, the pressing block 22 is placed on the upper end surface of the support seat 21, and the protrusion 222 is aligned with the limiting groove 213, and then a bolt is used to pass through the first screw hole 221 and the second screw hole 214 to fix the pressing block 22. When the pressing block 22 is installed, the first beam expanding lens component 102 and the second beam expanding lens component 201 are fixed to the V-groove 215. The first beam expanding lens component 102 can rotate in the V-groove 215 under the drive of the rotating driver 10 to change the relative angle between the first beam expanding lens component 102 and the second beam expanding lens component 201.

[0068] Combination Figure 4 and Figure 5 As shown, the rotation driver 10 includes a tail limiting component, a driving component 13 and a head limiting component. The first end of the driving component 13 is connected to the tail limiting component, and the second end is connected to the head limiting component. The driving component 13 can drive the head limiting component to rotate.

[0069] Furthermore, the head limiting component includes a supporting seat 14 and a pressing cap 15, the pressing cap 15 is used to fix the first connector 101 of the standard jumper 100 to the supporting seat 14, and the tail limiting component includes a limiting channel 121, the axis of the limiting channel 121 coincides with the axis of the first connector 101.

[0070] It should be understood that the tail of the fiber optic connector usually has an optical fiber. When controlling the rotation of the fiber optic connector, if the optical fiber is bent at a large angle, the inner core may be deformed, that is, factors that affect the change in optical performance will appear. In order to reduce this effect, the limiting channel 121 supports and limits the optical fiber at the tail of the connector so that it rotates coaxially with the standard jumper 100 to avoid changes in optical performance caused by twisting of the optical fiber.

[0071] In an optional embodiment, a supporting groove 141 is provided on the supporting seat 14, a limiting slot 144 is provided on the supporting groove 141, the first connector 101 is arranged in the supporting groove 141 and is circumferentially positioned by the limiting slot 144, and the pressing cap 15 is hingedly connected to the supporting seat 14 for fixing the first connector 101 to the supporting groove 141.

[0072] When installing the standard jumper 100, pass the standard jumper 100 from the left side of the supporting groove 141 to the right side, and insert the protrusion on the outer wall of the first connector 101 into the limiting slot 144 to achieve circumferential positioning of the first connector 101. The pressure cap 15 is installed in the pressure cap groove 142, and the shaft 16 is inserted into the shaft hole 143, so that the pressure cap 15 and the supporting seat 14 can be rotatably connected through the shaft 16. Flip the pressure cap 15 to cover the surface of the first connector 101, and use a screw to pass through the pressure cap 15 and fix it to the third screw hole 145, so that the first connector 101 and the supporting seat 14 can be fixed together.

[0073] Furthermore, the supporting seat 14 can be inserted into the driving end of the driving component 13, so that the supporting seat 14 is driven to rotate by the driving component 13. The tail limiting component includes a supporting platform 12 and a cover body 11. The supporting platform 12 is provided with a limiting channel 121 and a U-shaped groove 122. The optical fiber is placed in the limiting channel 121 and passes through the U-shaped groove 122 to enter the supporting seat 14. The cover body 11 and the supporting platform 12 can be fixed outside the limiting channel 121 by magnetic attraction. The limiting channel 121 just accommodates the optical fiber, keeping the optical fiber in a straight line at the tail of the standard jumper 100 to avoid bending.

[0074] Combination Figure 7 As shown, the displacement adjustment component 30 includes a first clamp block 31, a second clamp block 33, a cover plate 32 and a connecting seat 34. The connecting seat 34 is connected to the multi-axis displacement device through a mounting plate 35. The first clamp block 31 and the second clamp block 33 are connected to the connecting seat 34, and a clamping space for clamping the second connector 202 is formed between the first clamp block 31 and the second clamp block 33.

[0075] When installing the jumper 200 to be tested, the second connector 202 is installed between the first clamp block 31 and the second clamp block 33, and the position of the second clamp block 33 is adjusted so that the second clamp block 33 clamps the second connector 202 and does not loosen. At this time, the second beam expanding lens component 201 is in the V-groove 215, and the second connector 202 can be controlled to perform multi-directional displacement relative to the second beam expanding lens component 201 through a multi-axis displacement device to change the position state between the second connector 202 and the second beam expanding lens component 201.

[0076] The connection between the second connector 202 and the second beam expansion lens component 201 is outside the clamping space.

[0077] In this way, when the position between the second connector 202 and the second expanding lens component 201 is adjusted appropriately, the second connector 202 and the second expanding lens component 201 can be pre-fixed by dripping glue into the connection, and then the subsequent permanent fixation can be performed after the jumper wire 200 to be tested in this state is taken out.

[0078] In an optional embodiment, the first clamping block 31 is provided with a first arc-shaped groove 301, and the second clamping block 33 is provided with a second arc-shaped groove 302, and the first arc-shaped groove 301 and the second arc-shaped groove 302 form a clamping space that can stably clamp the second connector 202.

[0079] The first clamping block 31 is also provided with a pigtail groove 314, which is coaxial with the first arc groove 301. When the cover plate 32 is covered on the pigtail groove 314, the optical fiber connected to the jumper 200 to be tested can be positioned to avoid the optical performance being affected by the bending of the optical fiber when the spatial position of the second connector 202 is adjusted.

[0080] Combination Figure 7 As shown, the front ends of the first clamp block 31 and the second clamp block 33 have a bevel 311, and the overall design is a pointed mouth shape, which is conducive to using a camera to aim at the second connector 202 from the side and control the appropriate focal length. The square groove 312 designed at the root of the arc groove is a tool withdrawal groove for easy machining.

[0081] Combination Figure 7 As shown, the main body of the first clamping block 31 is connected to the connecting seat 34 at the bottom through the fourth screw hole 313 .

[0082] like Figure 7 As shown, the front ends of the first clamping block 31 and the second clamping block 33 are provided with steps 331 to ensure axial positioning after being connected with the connecting seat 34 .

[0083]

Coupling method of coaxial expanded beam contacts

[0084] A second aspect of the present invention provides a technical solution, a method for coupling a coaxial beam expansion contact, using the above-mentioned coupling tool for the coaxial beam expansion contact, comprising the following steps:

[0085] Step 1: Install the standard jumper 100 to the rotation driver 10, install the jumper 200 to be tested to the displacement adjustment component 30, and connect the standard jumper 100 and the jumper 200 to be tested to the coupling performance test component;

[0086] Step 2: driving the standard jumper 100 to rotate by the rotation driver 10, detecting the coupling state between the standard jumper 100 and the jumper to be tested 200 in real time by the coupling performance test component, and obtaining a coupling value data set {A} corresponding to each angle;

[0087] Step 3, according to the coupling data between the standard jumper 100 and the jumper to be tested 200, rotate the standard jumper 100 so that the standard jumper 100 stops at the first angle, wherein the coupling value Amax corresponding to the first angle is max{A}, that is, the angle position is the worst coupling position between the standard jumper 100 and the jumper to be tested 200 in this state, and the optical performance of the jumper to be tested 200 is adjusted at the worst position to control the lower limit of the performance of the jumper to be tested 200;

[0088] Step 4, adjusting the position between the second beam expansion lens component 201 and the second connector 202 by the displacement adjustment component 30, so that the coupling value Amax corresponding to the first angle reaches a minimum value;

[0089] Step 5: pre-fix the second beam expansion lens component 201 and the second connector 202, take out the jumper wire 200 to be tested, and complete the coupling of the jumper wire 200 to be tested.

[0090] In this way, by first finding the worst coupling position and then adjusting the coupling performance based on the position, the lower limit of product performance can be controlled. On the basis of ensuring that the lower limit of product performance meets production requirements, the performance consistency of the products produced is high, effectively improving the qualified rate of expanded beam fiber optic connector contact products.

[0091] It should be understood that since the collimator lens has a fixed focal length, the optical coupling performance is best when the second connector 202 is at the focal length position away from the second collimator lens component 201. Therefore, firstly, the second connector 202 is adjusted along the axial direction of the second collimator lens component 201 until its end face coincides with the focal plane of the second collimator lens component 201, and then the angle of the second connector 202 is adjusted. When adjusting the angle, no matter in which direction it deflects, this step is reversible. Therefore, according to the real-time detection results of the coupling performance test component, the position corresponding to the best coupling performance can be determined.

[0092] In an optional embodiment, in step 4, it includes:

[0093] Step 41, controlling the second connector 202 to move along the axis direction of the second beam expanding lens component 201, so that the end surface of the second connector 202 is located in the focal plane of the second beam expanding lens component 201;

[0094] Step 42, control the second connector 202 to swing up / down, form a data set {B} on the current swing trajectory, and make the second connector 202 stop at the position corresponding to the minimum value in the data set {B};

[0095] Step 43, control the second connector 202 to swing left / right, form a data set {C} on the current swing trajectory, and make the second connector 202 stop at the position corresponding to the minimum value in the data set {C}.

[0096] In this way, after adjustment by the displacement adjustment component 30, the target requirements can still be met when the jumper wire to be tested 200 is at the worst coupling angle with the standard jumper wire 100. Therefore, at angles other than this coupling angle, the jumper wire to be tested 200 can achieve better coupling performance. Therefore, after any two jumpers to be tested 200 produced according to this standard are coupled, their coupling performance can meet the use requirements.

[0097] In a specific embodiment, taking a single-ended multimode expanded beam jumper as an example, the jumper structure includes an expanded beam optical contact arranged at the first end of a single-core optical cable and an FC optical contact at the second end, and its performance index requirement is: insertion loss IL≤0.4dB@850nm.

[0098] Specifically, 5 wires were processed by the single angle debugging method as the first group of samples, numbered #1-1, #1-2, #1-3 to #1-5 respectively; and 5 wires were processed by the rotationally adjustable angle debugging method proposed in this application as the second group of samples, numbered #2-1, #2-2, #2-3 to #2-5 respectively.

[0099] The performance compatibility of the two groups of jumpers after processing is shown in the following table.

[0100]

[0101] As shown in the above table, the indicators of the wires processed by single-angle debugging on the machine meet the requirements, but the docking test between the actual products of the same batch will show out-of-tolerance. The adjustable angle coupling method proposed in this application can produce products with high consistency.

[0102] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. A coupling tool for a coaxial expanded beam contact, characterized in that: It comprises a rotation driver (10), a crimping component (20) and a displacement adjustment component (30); The rotary drive (10) is connected to a standard jumper wire (100); The displacement adjustment component (30) is connected to the jumper wire (200) to be tested; The standard jumper (100) comprises a first plug-in connector (101) and a first beam expanding lens component (102), wherein the first plug-in connector (101) and the first beam expanding lens component (102) are relatively fixed; The jumper to be tested (200) comprises a second plug-in component (202) and a second beam expanding lens component (201); A coupling performance testing component, connected to the standard jumper (100) and the jumper to be tested (200), and used to detect the coupling performance between the standard jumper (100) and the jumper to be tested (200); The crimping component (20) comprises at least one V-shaped groove (215), and the first beam expanding lens component (102) and the second beam expanding lens component (201) are placed in the V-shaped groove (215), so that the axes of the first beam expanding lens component (102) and the second beam expanding lens component (201) coincide with each other; The crimping component (20) comprises a support seat (21) and two pressing blocks (22); the top of the support seat (21) is provided with at least one V-shaped groove (215); the length direction of the V-shaped groove (215) is parallel to the axial direction of the rotary driver (10); the pressing block (22) is detachably arranged on the top of the support seat (21) to cover the V-shaped groove (215); The first pressing block is used to cover the first beam expanding lens component (102), and the second pressing block is used to cover the second beam expanding lens component (201); The rotation driver (10) is used to drive the first connector (101) and the first beam expanding lens component (102) to rotate synchronously around the axis of the first beam expanding lens component (102); the crimping component (20) fixes the second beam expanding lens component (201) to a predetermined position, so that the first beam expanding lens component (102) rotates to an arbitrary angle relative to the second beam expanding lens component (201); and the coupling performance testing component is used to detect the coupling performance of the standard jumper (100) and the jumper to be tested (200) at any angle; The rotation driver (10) comprises a tail limiting component, a driving component and a head limiting component, wherein a first end of the driving component is connected to the tail limiting component, a second end of the driving component is connected to the head limiting component, and the driving component can drive the head limiting component to rotate; The head limiting component comprises a supporting seat (14) and a pressing cap (15), wherein the pressing cap (15) is used to fix the first connector (101) of the standard jumper (100) to the supporting seat (14), and the tail limiting component comprises a limiting channel (121), wherein the axis of the limiting channel (121) coincides with the axis of the first connector (101); When the first beam expanding lens component (102) and the second beam expanding lens component (201) are at a predetermined angle, the displacement adjustment component (30) is used to adjust the spatial position of the second connector (202), so that the position state between the second beam expanding lens component (201) and the second connector (202) changes, so that the coupling performance of the standard jumper (100) and the jumper to be tested (200) at any angle meets the target performance; The displacement adjustment component (30) comprises a first clamping block (31), a second clamping block (33), a cover plate (32) and a connecting seat (34); the connecting seat (34) is connected to the multi-axis displacement device via a mounting plate (35); the first clamping block (31) and the second clamping block (33) are connected to the connecting seat (34); and a clamping space for clamping the second connector (202) is formed between the first clamping block (31) and the second clamping block (33); wherein the connection between the second connector (202) and the second beam expansion lens component (201) is outside the clamping space.

2. The coupling tool for the coaxial expanded beam contact according to claim 1, characterized in that: The V-shaped groove (215) is constructed to include three limiting surfaces, and the three limiting surfaces are respectively located at positions where the circumscribed circle contours of the first beam expanding lens component (102) and the second beam expanding lens component (201) are tangent.

3. The coupling tool for the coaxial expanded beam contact according to claim 1, characterized in that: The upper end surface of the support seat (21) is provided with two limiting grooves (213), the bottom of the pressing block (22) is provided with a protrusion (222), the size of the protrusion (222) matches that of the limiting groove (213), the length direction of the limiting groove (213) is perpendicular to the length direction of the V-shaped groove (215), and the pressing block (22) is fixedly connected to the support seat (21) by screws.

4. The coupling tool for the coaxial expanded beam contact according to claim 1, characterized in that: The supporting seat (14) is provided with a supporting groove (141), and the supporting groove (141) is provided with a limiting slot (144). The first plug-in connector (101) is arranged in the supporting groove (141) and is circumferentially positioned by the limiting slot (144). The pressing cap (15) is hingedly connected to the supporting seat (14) and is used to fix the first plug-in connector (101) in the supporting groove (141).

5. The coupling tool for the coaxial expanded beam contact according to claim 1, characterized in that: The first clamping block (31) is provided with a first arc-shaped groove (301), and the second clamping block (33) is provided with a second arc-shaped groove (302); the first arc-shaped groove (301) and the second arc-shaped groove (302) constitute the clamping space; the first clamping block (31) is also provided with a pigtail groove (314), and the pigtail groove (314) is coaxial with the first arc-shaped groove (301).

6. A coupling method for a coaxial expanded beam contact, characterized in that: A coupling tool using the coaxial expanded beam contact according to any one of claims 1 to 5, comprising the following steps: Step 1: Install the standard jumper (100) on the rotation driver (10), install the jumper to be tested (200) on the displacement adjustment component (30), and connect the standard jumper (100) and the jumper to be tested (200) to the coupling performance test component; Step 2: driving the standard jumper (100) to rotate by means of a rotation driver (10), detecting the coupling state between the standard jumper (100) and the jumper to be tested (200) in real time by means of a coupling performance testing component, and obtaining a coupling value data set {A} corresponding to each angle; Step 3, according to the coupling data between the standard jumper (100) and the jumper to be tested (200), rotating the standard jumper (100) so that the standard jumper (100) stops at a first angle, wherein the coupling value Amax corresponding to the first angle is max{A}; Step 4: adjusting the position between the second beam expansion lens component (201) and the second connector (202) by means of a displacement adjustment component (30) so that the coupling value Amax corresponding to the first angle reaches a minimum value; Step 5: pre-fix the second beam expansion lens component (201) and the second connector (202), take out the jumper wire to be tested (200), and complete the coupling of the current jumper wire to be tested (200).

7. The coupling method of the coaxial expanded beam contact according to claim 6, characterized in that: In step 4, include: Step 41, controlling the second connector (202) to move along the axial direction of the second beam expanding lens component (201) so that the end surface of the second connector (202) is located in the focal plane of the second beam expanding lens component (201); Step 42, controlling the second connector (202) to swing up / down to form a data set {B} on the current swinging trajectory, and causing the second connector (202) to stop at a position corresponding to the minimum value in the data set {B}; Step 43: Control the second connector (202) to swing left / right, form a data set {C} on the current swinging trajectory, and make the second connector (202) stop at the position corresponding to the minimum value in the data set {C}.

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