Optical module testing device and system

Abstract

The utility model discloses an optical module testing device and system, the optical module testing device comprises an upper testing seat, a lower testing seat and a testing plate, the testing plate is provided with a first connector used for connecting an optical module to be tested and a second connector used for connecting an error code module, and the second connector is electrically connected with the first connector. The upper test seat is provided with a test cavity, the test plate is fixed on the lower test seat, and the upper test seat covers the test plate, so that the optical module to be tested connected with the first connector on the test plate is located in the test cavity. According to the utility model, an error detector and a high-speed cable are omitted, so that the cost is greatly reduced, and the size is greatly reduced. According to the utility model, the to-be-tested optical module can be subjected to various tests including high and low temperature tests, bit error rate tests and the like at the same time, a large amount of test time can be saved, and the test efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical communication, and in particular to an optical module testing device and system. Background Art

[0002] In traditional optical module test equipment, a high-speed bit error tester (BERT) is required to provide PRBS signals to the optical module, such as Figure 1 As shown in the figure, this method requires a high-speed cable to connect the bit error tester and the test board. This test method has two disadvantages: 1. The high-speed bit error tester is very expensive and has a relatively large size. 2. The high-speed cable is easy to break after long-term use.

[0003] Moreover, during the research and development stage, optical modules need to be tested under high temperature, normal temperature, and low temperature environments to detect the working stability of the modules. Therefore, it is necessary to provide corresponding optical module testing equipment to test the optical modules under high temperature, normal temperature, and low temperature environments. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art, and proposes an optical module testing device and system.

[0005] The technical solution of the utility model is implemented as follows: the utility model discloses an optical module testing device, including an upper test seat, a lower test seat and a test board, the test board is provided with a first connector for connecting an optical module to be tested and a second connector for connecting an error code module, the second connector is electrically connected to the first connector, the upper test seat is provided with a test cavity, the test board is fixed on the lower test seat, the upper test seat is covered on the test board, so that the optical module to be tested connected to the first connector on the test board is located in the test cavity.

[0006] Furthermore, the optical module testing device of the utility model also includes a first communication board and a second communication board, the first communication board is electrically connected to the first connector, the second communication board is electrically connected to the second connector, and the first communication board and the second communication board are provided with a communication module and a communication interface connected to the communication module, so that the first connector is connected to the computer through the first communication board, and the second connector is connected to the computer through the second communication board.

[0007] Furthermore, the first communication board and the second communication board are fixed on the lower test socket, the first communication board is electrically connected to the first connector via a first connecting line, and the second communication board is electrically connected to the second connector via a second connecting line.

[0008] Furthermore, the upper test seat is provided with an air inlet hole for supplying cold and hot air flows into the test cavity, and the air inlet hole is communicated with the test cavity of the upper test seat.

[0009] Furthermore, a first connector is installed at the air inlet for connecting to a cold and hot air source system.

[0010] Furthermore, the air inlet is located above the optical module to be tested.

[0011] Furthermore, the lower test seat is provided with a cavity, the cavity wall of the cavity is provided with a vent hole and an air outlet hole, and the vent hole is communicated with the test cavity of the upper test seat.

[0012] Furthermore, a second connector is installed at the air outlet for connecting to a cold or hot air source system.

[0013] Furthermore, the upper test seat comprises a test seat body and a flip cover, the test seat body covers the test board and is connected to the lower test seat and / or the test board, and the flip cover is hinged to the test seat body via a hinged connector.

[0014] Furthermore, the rotation axis of the hinged connection member is perpendicular to a first direction, and the first direction is a direction in which the optical module to be tested is inserted into the first connector.

[0015] Furthermore, the upper test seat is provided with a limiter for limiting the insertion stroke of the optical module to be tested;

[0016] or / and,

[0017] The upper test seat and / or the lower test seat is provided with an opening for allowing the optical fiber line to pass through.

[0018] Furthermore, the optical module testing device of the utility model also includes a bit error module for generating a PRBS signal, and the bit error module is connected to the second connector on the test board.

[0019] Furthermore, the bit error module is an optical module.

[0020] The utility model also discloses a test system for an optical module, comprising a computer and the optical module test device as described above, wherein the computer is connected to the optical module test device.

[0021] Further, the TX optical port of the bit error module is connected to the RX optical port of the optical module to be tested through the first optical fiber line;

[0022] or / and,

[0023] The TX optical port of the optical module to be tested is connected to the test equipment through the second optical fiber line.

[0024] Furthermore, an optical attenuator is arranged on the first optical fiber line between the TX optical port of the bit error module and the RX optical port of the optical module to be tested.

[0025] Compared with the prior art, the utility model has the following beneficial effects: a first connector for connecting an optical module to be tested and a second connector for connecting a bit error module are provided on the test board of the utility model, and the second connector is electrically connected to the first connector. On the test board, a high-speed signal line connected between the first connector and the second connector replaces the traditional high-speed cable, and a PRBS signal is generated through the bit error module, so that the patent eliminates the bit error meter and the high-speed cable, which greatly reduces the cost and the volume.

[0026] The test board of the utility model is arranged between an upper test seat and a lower test seat, and the upper test seat and the lower test seat are used for fixing the test board and docking a heat flow instrument, and can provide high and low temperature tests.

[0027] The utility model can be used to simultaneously perform multiple tests on the light module to be tested, including high and low temperature tests, bit error rate tests, etc., which can save a lot of test time and improve test efficiency.

[0028] Furthermore, the test board of the utility model has low cost and is easy to replace, and the error bit module on the test board is also easy to replace, that is, the error bit module can be replaced by plugging and unplugging it. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of a traditional optical module test system;

[0030] Figure 2 This is a schematic diagram of the structure of a test board according to an embodiment of the utility model;

[0031] Figure 3 This is a schematic diagram of the installation of a test board according to an embodiment of the utility model;

[0032] Figure 4 The figure is a schematic diagram of the structure of the optical module testing device according to the embodiment of the utility model.

[0033] In the accompanying drawings, 1 is a lower test socket, 11 is an opening, 12 is a vent, 13 is a cavity, 14 is a second connector, 2 is an upper test socket, 21 is a test socket body, 22 is a flip cover, 23 is a hinged connector, 24 is a first connector, 25 is a limiter, 3 is a test board, 31 is a first connector, 32 is a second connector, 4 is a first communication board, 5 is a second communication board, 6 is an optical module to be tested, and 7 is an error module. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "one" or "the" do not indicate quantity restrictions, but indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described target changes, the relative positional relationship may also change accordingly.

[0036] In each of the accompanying drawings, identical elements are represented by similar reference numerals. For the sake of clarity, the various parts in the accompanying drawings are not all drawn to scale. In addition, some well-known parts may not be shown in the drawings.

[0037] Many specific details of the present invention are described below, such as the structure, materials, dimensions, processing techniques and technologies of the components, so as to more clearly understand the present invention. However, as those skilled in the art will appreciate, the present invention may be implemented without following these specific details.

[0038] See also Figures 2 to 4 The embodiment of the utility model provides an optical module test device, including a test fixture and a test board 3, wherein the test fixture includes an upper test seat 2 and a lower test seat 1, wherein the test board 3 is provided with a first connector 31 for connecting the optical module 6 to be tested and a second connector 32 for connecting the bit error module 7, wherein the second connector 32 is electrically connected to the first connector 31, wherein the upper test seat 2 is provided with a test cavity, wherein the test board 3 is fixed on the lower test seat 1, wherein the upper test seat 2 is covered on the test board 3, such that the optical module 6 to be tested connected to the first connector 31 on the test board 3 is located in the test cavity. The test fixture is a high and low temperature test fixture. The test cavity is surrounded by the upper test seat 2 and the lower test seat 1.

[0039] The test plate 3 can be fixed to the lower test seat 1 by bolts. The upper test seat 2 can also be fixed to the lower test seat 1 by bolts. For example, in one embodiment, the fixing holes on the test plate 3, the upper test seat 2, and the lower test seat 1 correspond to each other, and the test plate 3, the upper test seat 2, and the lower test seat 1 are fixedly connected by bolts. The test plate 3 is located between the upper test seat 2 and the lower test seat 1.

[0040] The first connector 31 and the second connector 32 are female sockets of the optical module and are used to plug the optical module.

[0041] Furthermore, the second connector 32 is electrically connected to the first connector 31 through a conductive line on the test board 3 .

[0042] See also Figure 3 In some embodiments, two connectors, namely, optical module sockets, are placed in the middle of the test board 3 to supply power to the module, and the transmission and reception of high-speed signal lines of the two modules (i.e., the error module 7 and the optical module to be tested 6) are connected to each other.

[0043] Furthermore, the optical module testing device of the present invention further comprises a power supply unit, which is used to supply power to the test board 3. The power supply unit of this embodiment is not located on the test board 3, so that only the first connector 31, the second connector 32 and the conductive circuit are provided on the test board 3, so that the cost of the test board 3 is relatively low.

[0044] Furthermore, the optical module test device of the utility model also includes a first communication board 4 and a second communication board 5, wherein the first communication board 4 is electrically connected to the first connector 31, and the second communication board 5 is electrically connected to the second connector 32. The first communication board 4 and the second communication board 5 are provided with a communication module and a communication interface connected to the communication module, so that the first connector 31 is connected to the computer through the first communication board 4, and the second connector 32 is connected to the computer through the second communication board 5. Which communication module and communication interface is selected in the utility model depends on the specific application scenario and requirements. For example, two communication boards of one embodiment are connected to a computer, i.e., a computer, via Type-C. The two communication boards communicate with two modules (i.e., the bit error module 7 and the optical module to be tested 6) respectively via IIC, and one computer can control two modules (i.e., the bit error module 7 and the optical module to be tested 6) at the same time. The computer end controls the bit error module 7 (such as an optical module) to generate and receive PRBS signals.

[0045] Furthermore, the first communication board 4 and the second communication board 5 are fixed on the lower test socket 1 , the first communication board 4 is electrically connected to the first connector 31 via a first connecting line, and the second communication board 5 is electrically connected to the second connector 32 via a second connecting line.

[0046] Furthermore, the upper test seat 2 is provided with an air inlet hole for supplying cold and hot air flows into the test cavity, and the air inlet hole is communicated with the test cavity of the upper test seat 2 .

[0047] Furthermore, a first connector 24 is installed at the air inlet for connecting to a cold or hot air source system. The cold or hot air flow of the cold or hot air source system (such as a heat flow meter) can be blown to the optical module 6 to be tested through the first connector 24 .

[0048] Furthermore, the air inlet is located above the optical module to be measured 6 .

[0049] Furthermore, the lower test seat 1 is provided with a cavity 13 , the cavity wall of the cavity 13 is provided with a vent hole 12 and an air outlet, and the vent hole 12 is connected with the test cavity of the upper test seat 2 .

[0050] Furthermore, a second connector 14 is installed at the air outlet for connecting to a cold or hot air source system.

[0051] The cold and hot air source system can be a heat flow instrument system, which controls the temperature of the test cavity by controlling the temperature of the cold and hot air flows entering the test cavity.

[0052] Further, the upper test seat 2 includes a test seat body 21 and a flip cover 22, the test seat body 21 covers the test board 3 and is connected to the lower test seat 1 and / or the test board 3, and the flip cover 22 is hinged to the test seat body 21 through a hinged connector 23. The rotation axis of the hinged connector 23 of this embodiment is perpendicular to the first direction, which is the direction in which the optical module 6 to be tested is inserted into the first connector 31.

[0053] Furthermore, the upper test seat 2 is provided with a limiting member 25 for limiting the insertion stroke of the optical module 6 to be tested.

[0054] The limiter 25 is used to determine the insertion depth, and ensures that the optical module 6 to be tested is inserted only to a predetermined depth by physically blocking or limiting the further insertion of the optical module 6 to be tested.

[0055] In some embodiments, the upper test seat 2 (test seat body 21) is provided with a mounting hole for mounting a stopper 25, and the stopper 25 can be threadedly engaged in the mounting hole, and the lower end of the stopper 25 extends into the test cavity. Of course, the present invention is not limited to the stopper structure disclosed in the above embodiment, and other stopper structures can also be used.

[0056] Furthermore, the upper test seat 2 and / or the lower test seat 1 is provided with an opening 11 for allowing the optical fiber line to pass through.

[0057] Furthermore, the optical module testing device of the present invention further includes a bit error module 7 for generating a PRBS signal, and the bit error module 7 is connected to the second connector 32 on the testing board 3 .

[0058] Furthermore, the bit error module 7 is an optical module.

[0059] Some other embodiments of the present invention further disclose an optical module testing system, comprising a computer and the optical module testing device as described above, wherein the computer is connected to the optical module testing device.

[0060] Furthermore, the TX optical port of the bit error module 7 is connected to the RX optical port of the optical module to be tested 6 through the first optical fiber line.

[0061] Furthermore, an optical attenuator is arranged on the first optical fiber line between the TX optical port of the error module 7 and the RX optical port of the optical module to be tested 6 .

[0062] In some embodiments, the TX optical port of the optical module to be tested 6 is connected to the test equipment through a second optical fiber line.

[0063] The test equipment can be an oscilloscope, but is not limited to an oscilloscope. The choice of test equipment depends on the specific test requirements.

[0064] In some other embodiments, the TX optical port of the optical module to be tested 6 is connected to at least one testing device via at least one optical switch.

[0065] In the present invention, the test board 3 is first fixed on the lower test seat 1 , and then the upper test seat 2 is installed on the lower test seat 1 , and the flip cover 22 is opened, and the optical module 6 to be tested can be inserted into the first connector 31 .

[0066] The computer is used to control the bit error module 7, i.e., the optical module, so that the bit error module 7 (such as the optical module) generates the required PRBS signal, such as the DSP inside the bit error module 7 (such as the optical module) generates the required PRBS signal.

[0067] The optical module 6 to be tested is controlled by a computer to make the optical module 6 to be tested emit light, and the emission indicators of the optical module, such as eye diagram, optical power, extinction ratio, etc., can be tested by the test equipment.

[0068] An attenuator is connected to the transmitting optical path of the bit error module 7, ie, the optical module, and then connected to the receiving end of the optical module to be tested 6.

[0069] The computer is used to control the bit error module 7 (such as an optical module) to read the bit error rate information and test the receiving end indicators of the optical module 6 to be tested, such as sensitivity, LOSA, LOSD, etc.

[0070] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. An optical module testing device, characterized in that: The invention comprises an upper test seat, a lower test seat and a test board, wherein the test board is provided with a first connector for connecting an optical module to be tested and a second connector for connecting an error bit module, the second connector is electrically connected to the first connector, the upper test seat is provided with a test cavity, the test board is fixed on the lower test seat, and the upper test seat is covered on the test board so that the optical module to be tested connected to the first connector on the test board is located in the test cavity.

2. The optical module testing device according to claim 1, wherein: It also includes a first communication board and a second communication board, the first communication board is electrically connected to the first connector, and the second communication board is electrically connected to the second connector. The first communication board and the second communication board are provided with a communication module and a communication interface connected to the communication module, so that the first connector is connected to the computer through the first communication board, and the second connector is connected to the computer through the second communication board.

3. The optical module testing device according to claim 2, wherein: The first communication board and the second communication board are fixed on the lower test socket, the first communication board is electrically connected to the first connector through a first connecting line, and the second communication board is electrically connected to the second connector through a second connecting line.

4. The optical module testing device according to claim 1, wherein: The upper test seat is provided with an air inlet for supplying cold and hot air flows into the test cavity, and the air inlet is connected to the test cavity of the upper test seat; or / and, The lower test seat is provided with a cavity, the cavity wall of which is provided with a vent hole and an air outlet hole, and the vent hole is communicated with the test cavity of the upper test seat.

5. The optical module testing device according to claim 1, wherein: The upper test seat comprises a test seat body and a flip cover. The test seat body covers the test board and is connected to the lower test seat and / or the test board. The flip cover is hinged to the test seat body through a hinged connector.

6. The optical module testing device according to claim 1, wherein: The upper test seat is provided with a limiting member for limiting the insertion stroke of the optical module to be tested; or / and, The upper test seat and / or the lower test seat is provided with an opening for allowing the optical fiber line to pass through.

7. The optical module testing device according to claim 1, wherein: It also includes a bit error module for generating a PRBS signal, and the bit error module is connected to the second connector on the test board.

8. The optical module testing device according to claim 7, wherein: The bit error module is an optical module.

9. A test system for an optical module, characterized in that: The optical module testing device comprises a computer and the optical module testing device as claimed in any one of claims 1 to 8, wherein the computer is connected to the optical module testing device.

10. The optical module testing system according to claim 9, wherein: The TX optical port of the bit error module is connected to the RX optical port of the optical module to be tested through the first optical fiber line; or / and, The TX optical port of the optical module to be tested is connected to the test equipment through the second optical fiber line.

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