High-speed radio frequency performance testing device of optical transceiver

Abstract

The utility model discloses a high-speed radio frequency performance testing device of an optical transceiver, which comprises a hold-down mechanism and a testing mechanism, the testing mechanism comprises a PCB, an FPC positioning block, an anisotropic conductive film and a Pogo pin probe, one side of the PCB is provided with the FPC positioning block, and the FPC positioning block is provided with a positioning groove corresponding to an FPC of the optical transceiver; a metal pattern layer is arranged on the PCB corresponding to a golden finger at the tail end of the FPC, and an anisotropic conductive film covers the metal pattern layer; the PCB is provided with a Pogo pin probe corresponding to the FPC bonding pad, and the Pogo pin probe is used for achieving connection between the FPC bonding pad and a direct current wire. The hold-down mechanism comprises a lifting mechanism and a pressure head, and the lifting mechanism is used for driving the pressure head to hold down the FPC of the optical transceiver inside the positioning groove. According to the utility model, the radio frequency performance test of the optical transceiver with the FPC is realized, and the reliability is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical fiber communication, and in particular relates to a high-speed radio frequency performance test device for an optical transceiver component. Background Art

[0002] At present, the optical transceiver devices used in optical communication modules are mainly in the form of TO packaging and BOX packaging. In high-speed optical communications, both of these optical transceiver device packaging forms use FPC as a link to achieve electrical connection with the outside. After the production of the optical transceiver device is completed, when testing the performance of the optical transceiver device, the connector is usually clamped with FPC to power on the optical device and test its various performances. However, as the frequency of optical communication data becomes higher and higher, when using FPC connectors to test high-speed RF performance (eye diagrams and S parameters), the bandwidth limitation of the connector will ultimately affect the accuracy of the test results. Utility Model Content

[0003] The purpose of the utility model is to provide a high-speed radio frequency performance test device for an optical transceiver device, aiming to solve the above-mentioned defect of limited high-speed signal radio frequency performance test.

[0004] The utility model is mainly realized through the following technical solutions:

[0005] A high-speed radio frequency performance test device for an optical transceiver device comprises a pressing mechanism and a testing mechanism, wherein the testing mechanism comprises a PCB board, an FPC positioning block, an anisotropic conductive film and a Pogo pin probe, wherein an FPC positioning block is arranged on one side of the PCB board, and a positioning groove is arranged on one side of the FPC positioning block corresponding to the FPC of the optical transceiver device; a metal pattern layer is arranged on the end gold finger of the PCB board corresponding to the FPC located inside the positioning groove, and the metal pattern layer is covered with anisotropic conductive film; a Pogo pin probe is arranged on the FPC pads on both sides of the FPC on the PCB board on one side of the anisotropic conductive film, and is used to connect the FPC pads with a DC conductor; the pressing mechanism comprises a lifting mechanism and a pressure head, wherein the lifting mechanism is located above the FPC positioning block, and a pressure head is arranged at the bottom of the lifting mechanism, and the lifting mechanism is used to drive the pressure head to press the FPC of the optical transceiver device inside the positioning groove.

[0006] In order to better implement the utility model, further, the testing mechanism also includes a DC connector and an RF connector. The DC connector is provided at one end of the PCB board, and the RF connector is installed on the PCB board located on one side of the FPC positioning block.

[0007] In order to better implement the utility model, further, a clamping mechanism is included. A clamping mechanism is provided on one side of the testing mechanism. The clamping mechanism is used to fix the optical transceiver device, and the FPC of the optical transceiver device extends to the inside of the positioning groove.

[0008] In order to better realize the utility model, further, the clamping mechanism includes a base, a clamping part, a fiber optic bracket and a fiber optic jumper, the fiber optic bracket and the clamping part are respectively provided on both sides of the base, an optical transceiver device is fixed between the fiber optic bracket and the clamping part, and a fiber optic jumper is provided on the top of the fiber optic bracket corresponding to the optical transceiver device; the FPC of the optical transceiver device passes through the fiber optic bracket and extends to the inside of the positioning groove.

[0009] In order to better realize the utility model, further, the clamping part includes a support, a clamping pad, a pull rod and a handle, the top of the base is slidably provided with a clamping pad, and the end of the base away from the optical fiber bracket is provided with a support; one end of the pull rod slides through the support and is connected to the clamping pad, and the other end is connected to the handle, and a spring is provided on the pull rod between the clamping pad and the support.

[0010] In order to better implement the utility model, further, an arc-shaped clamping groove is provided on one side of the clamping pad corresponding to the optical transceiver device.

[0011] In order to better realize the utility model, further, the pressure head includes a sleeve, a sliding pressure head, a spring and a guide pad, a guide pad is installed in the middle of the top of the sleeve, a sliding pressure head is slidably arranged inside the sleeve, and the bottom of the sliding pressure head extends to the outside of the sleeve; a plurality of guide pillars are arranged on the top of the sliding pressure head, the guide pillars are slidably connected to the guide pad, and a spring is arranged on the outside of the guide pillars.

[0012] In order to better realize the utility model, further, the lifting mechanism includes a bracket, a guide plate, a guide column and a linear drive mechanism, a linear drive mechanism is installed on one side of the bracket, and the driving end of the linear drive mechanism is connected to the guide plate, and a pressure head is installed at the bottom of the guide plate; the bracket is installed with several guide columns along the Z-axis direction, and the guide plate is slidably connected to the guide column.

[0013] The beneficial effects of the utility model are as follows:

[0014] (1) The utility model overcomes the shortcomings of the traditional test of FPC optical transceiver devices using FPC connectors, which limits the high-speed signal RF performance test. The utility model uses anisotropic conductive film and metal pattern layer to electrically connect the device under test with the PCB board, meeting the test of high-speed RF signals. At the same time, through the setting of two Pogo pin probes, a reliable connection between the FPC pad and the DC conductor is achieved. The utility model innovatively uses anisotropic conductive film and Pogo pin probes to achieve RF performance testing of optical transceivers with FPC, with good reliability.

[0015] (2) The utility model is designed with a flexible and reliable clamping mechanism, which not only facilitates the loading and unloading of the material to be tested and is suitable for large-scale applications, but also provides a heat dissipation channel for the test piece during the test process through the clamping pad, thereby ensuring the accuracy of the test results and having good practicality.

[0016] (3) The utility model realizes balanced force when the pressure head is pressed down by designing a plurality of guide pillars and springs. The utility model uses the spring in the sleeve to apply pressure to the FPC when pressing down, wherein the use of multiple springs can make the pressure on the pressure head evenly distributed, thereby enhancing the contact stability between the FPC and the test mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the high-speed radio frequency performance test device of the optical transceiver device of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the pressing mechanism;

[0019] Figure 3 The structural explosion head of the pressure head;

[0020] Figure 4 It is a structural diagram of the FPC of the device to be tested;

[0021] Figure 5 It is a structural schematic diagram of the pressing mechanism;

[0022] Figure 6 It is a schematic diagram of the state of the pressing mechanism clamping the workpiece to be tested;

[0023] Figure 7 It is a schematic diagram of the structure of the test organization;

[0024] Figure 8 Schematic diagram of the structure of anisotropic conductive film;

[0025] Fig. 9 It is a schematic diagram of the state of the pressure head pressing test of the utility model.

[0026] Wherein: 100-pressing mechanism, 101-bracket, 102-guide plate, 103-guide column, 104-linear driving mechanism, 110-pressing head, 111-sleeve, 112-sliding pressing head, 113-guide pad,

[0027] 200-clamping mechanism, 201-base, 202-optical fiber bracket, 203-optical fiber jumper, 204-support, 205-clamping pad, 206-pull rod, 207-handle,

[0028] 300-testing mechanism, 301-PCB board, 302-DC connector, 303-RF connector, 304-FPC positioning block, 305-metal pattern layer, 306-anisotropic conductive film, 307-Pogo pin probe,

[0029] 400-test piece, 401-end gold finger, 402-FPC pad. DETAILED DESCRIPTION

[0030] Embodiment 1:

[0031] A high-speed radio frequency performance test device for an optical transceiver device, such as Figure 1 and Fig. 9 As shown, it includes a pressing mechanism 100, a clamping mechanism 200 and a testing mechanism 300. The clamping mechanism 200 is used to clamp and fix the test piece 400, and the pressing mechanism 100 is used to press the FPC of the test piece 400 to the testing mechanism 300.

[0032] Preferably, if Figure 4 As shown, an FPC is disposed at the bottom of the device under test 400 , an end gold finger 401 is disposed at the end of the FPC, and FPC pads 402 are disposed on both sides.

[0033] like Figure 7 and Figure 8 As shown, the test mechanism 300 mainly includes parts such as a PCB board 301, an FPC positioning block 304, an anisotropic conductive film 306, a Pogo pin probe 307 and a PCB pad. The PCB board 301 is provided with a metal pattern layer 305 that is the same as the FPC gold finger of the optical transceiver device to be tested, and the anisotropic conductive film 306 is covered on the metal pattern layer 305. Specifically, the device to be tested 400 can be a TO-packaged optical transceiver device. Furthermore, the PCB board 301 is also provided with a DC connector 302 and an RF connector 303 for introducing an external instrument DC power supply and an RF signal source.

[0034] During the test, the FPC of the optical device to be tested held by the clamping mechanism 200 is placed in the FPC positioning block 304 on the PCB board 301, and the end gold finger 401 of the FPC is first aligned with the metal pattern layer 305 and the anisotropic conductive film 306 on the PCB, and then pressure is applied. The anisotropic conductive film 306 is used to conduct electricity in the Z direction under pressure and is non-conductive in the XY direction to achieve electrical connection between the device to be tested 400 and the test PCB board 301. Since the anisotropic conductive film 306 is very thin and the impedance discontinuity distance is very short, it has a high radio frequency bandwidth and can meet the test of high-speed radio frequency signals. However, since the three sides of the FPC pad 402 are surrounded by the surface insulating covering film on the FPC, it is not easy to achieve reliable connection with the anisotropic conductive film 306 when under pressure. Therefore, the utility model adopts two Pogo pin probes 307 to solve this problem. The two FPC pads 402 are mainly connected to DC wires and are not used to transmit radio frequency signals.

[0035] Preferably, if Figure 5 and Figure 6 As shown, the clamping mechanism 200 includes: a base 201, a support 204, a clamping pad 205, a pull rod 206, a handle 207, a spring, an optical fiber jumper 203 and an optical fiber bracket 202. The optical fiber bracket 202 and the support 204 are respectively arranged on both sides of the base 201. The clamping pad 205 is slidably arranged on the top of the base 201. One end of the pull rod 206 slides through the support 204 and is connected to the clamping pad 205, and the other end is connected to the handle 207. A spring is sleeved on the pull rod 206 between the clamping pad 205 and the support 204. The optical fiber jumper 203 is installed on the top of the optical fiber bracket 202. An arc clamping groove is arranged on one side of the clamping pad 205 corresponding to the optical transceiver device. The clamping pad 205 clamps the optical transceiver of the 400TO package of the test piece, and also provides a heat dissipation channel for the optical transceiver device under test.

[0036] Preferably, if Figure 1 and Figure 2 As shown, the pressing mechanism 100 mainly includes a bracket 101, a linear drive mechanism 104, a guide plate 102 and a pressing head 110. The bracket 101 is used to provide support; the linear drive mechanism 104 is used to drive the pressing head 110 to move up and down; the guide plate 102 is slidably matched with the guide column 103 on the bracket 101, so that the pressing head 110 maintains vertical movement without deviation during movement.

[0037] Preferably, if Figure 3As shown, the pressure head 110 includes a sliding pressure head 112, a sleeve 111, a guide pad 113 and a spring. The sliding pressure head 112 slides and telescopes in the sleeve 111, and a guide pad 113 is arranged on the top of the sleeve 111. A plurality of guide pillars are arranged on the top of the sliding pressure head 112, and a spring is sleeved on the outer side of the guide pillar. The guide pillar is slidably connected with the guide pad 113. The utility model utilizes the spring in the sleeve 111 to apply pressure to the FPC when pressing down, wherein the use of multiple springs can make the pressure on the sliding pressure head 112 evenly distributed, thereby enhancing the contact stability between the FPC and the test mechanism 300.

[0038] During the use of the utility model, the optical transceiver device testing process is as follows:

[0039] (1) Place the optical transceiver DUT 400 into the pressing mechanism 100, and lock the DUT 400 by cooperating with the clamping pad 205 and the optical fiber bracket 202;

[0040] (2) Insert the optical fiber jumper into the optical fiber bracket 202;

[0041] (3) Align the FPC of the optical transceiver DUT 400 and place it into the positioning groove of the FPC positioning block 304 on the test mechanism 300;

[0042] (4) The pressure head 110 is driven downward by the lifting mechanism and powered on for testing.

[0043] Preferably, the application of the present invention is expanded as follows: (1) The present invention is also applicable to high-speed radio frequency tests of all optical transceiver devices with FPC. (2) The present invention can realize automated testing by adding motors, guide rails, material grippers and other mechanisms.

[0044] The utility model overcomes the disadvantage that the conventional test of FPC optical transceiver uses FPC connector, which limits the high-speed signal RF performance test. The utility model innovatively utilizes the solution of combining anisotropic conductive film 306 and Pogo pin probe 307 to realize the RF performance test of FPC high-speed optical transceiver, and has good practicality.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A high-speed radio frequency performance test device for an optical transceiver device, characterized in that: The invention comprises a pressing mechanism (100) and a testing mechanism (300), wherein the testing mechanism (300) comprises a PCB board (301), an FPC positioning block (304), an anisotropic conductive film (306) and a Pogo pin probe (307); the FPC positioning block (304) is arranged on one side of the PCB board (301); a positioning groove is arranged on one side of the FPC positioning block (304) corresponding to the FPC of the optical transceiver device; a metal pattern layer (305) is arranged on the PCB board (301) located inside the positioning groove and corresponding to the end gold finger (401) of the FPC, and the metal pattern layer (305) is covered with the anisotropic conductive film (306); and a Pogo pin probe (307) is arranged on the FPC pads (402) on both sides of the FPC on the PCB board (301) on one side of the anisotropic conductive film (306). The pin probe (307) is used to realize the connection between the FPC soldering pad (402) and the DC wire; the pressing mechanism (100) comprises a lifting mechanism and a pressing head (110); the lifting mechanism is located above the FPC positioning block (304); and the pressing head (110) is arranged at the bottom of the lifting mechanism; the lifting mechanism is used to drive the pressing head (110) to press the FPC of the optical transceiver device inside the positioning groove.

2. The high-speed radio frequency performance test device for an optical transceiver device according to claim 1, characterized in that: The testing mechanism (300) further comprises a DC connector (302) and an RF connector (303); one end of the PCB board (301) is provided with the DC connector (302), and the RF connector (303) is installed on the PCB board (301) located on one side of the FPC positioning block (304).

3. The high-speed radio frequency performance test device for an optical transceiver device according to claim 1, characterized in that: It also comprises a clamping mechanism (200), one side of the testing mechanism (300) is provided with the clamping mechanism (200), the clamping mechanism (200) is used to fix the optical transceiver device, and the FPC of the optical transceiver device extends to the inside of the positioning groove.

4. The high-speed radio frequency performance test device for an optical transceiver device according to claim 3, characterized in that: The clamping mechanism (200) comprises a base (201), a clamping portion, an optical fiber bracket (202) and an optical fiber jumper (203); the optical fiber bracket (202) and the clamping portion are respectively arranged on both sides of the base (201); an optical transceiver device is fixed between the optical fiber bracket (202) and the clamping portion; and an optical fiber jumper (203) is arranged on the top of the optical fiber bracket (202) corresponding to the optical transceiver device; an FPC of the optical transceiver device passes through the optical fiber bracket (202) and extends to the inside of a positioning groove.

5. The high-speed radio frequency performance test device for an optical transceiver device according to claim 4, characterized in that: The clamping portion comprises a support (204), a clamping pad (205), a pull rod (206) and a handle (207); a clamping pad (205) is slidably provided on the top of the base (201); a support (204) is provided at one end of the base (201) away from the optical fiber bracket (202); one end of the pull rod (206) slides through the support (204) and is connected to the clamping pad (205), and the other end is connected to the handle (207); a spring is sleeved on the pull rod (206) between the clamping pad (205) and the support (204).

6. The high-speed radio frequency performance test device for an optical transceiver device according to claim 5, characterized in that: An arc-shaped clamping groove is provided on one side of the clamping cushion block (205) corresponding to the optical transceiver device.

7. A high-speed radio frequency performance test device for an optical transceiver device according to any one of claims 1 to 6, characterized in that: The pressure head (110) comprises a sleeve (111), a sliding pressure head (112), a spring and a guide pad (113); the guide pad (113) is installed in the middle of the top of the sleeve (111); the sliding pressure head (112) is slidably arranged inside the sleeve (111), and the bottom of the sliding pressure head (112) extends to the outside of the sleeve (111); a plurality of guide pillars are arranged on the top of the sliding pressure head (112); the guide pillars are slidably connected to the guide pad (113), and the outer sides of the guide pillars are sleeved with springs.

8. The high-speed radio frequency performance test device for an optical transceiver device according to claim 1, characterized in that: The lifting mechanism comprises a bracket (101), a guide plate (102), a guide column (103) and a linear drive mechanism (104); a linear drive mechanism (104) is installed on one side of the bracket (101), and a driving end of the linear drive mechanism (104) is connected to the guide plate (102); a pressure head (110) is installed at the bottom of the guide plate (102); a plurality of guide columns (103) are installed on the bracket (101) along the Z-axis direction, and the guide plate (102) is slidably connected to the guide columns (103).

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