A 100GE MLTOSA three-temperature LIV and spectral automatic testing system

Abstract

The utility model discloses a 100G EML TOSA three temperature LIV and spectrum automatic test system, wherein: test box connects heat flow appearance to realize three temperature environment, and one end of control panel connection test board is arranged in test box, and the other end is arranged outside test box and forms data connection with test equipment, the utility model discloses through heat flow appearance switches three temperature, and one side of control panel puts the box, and one side puts outside and reduces wiring and improves efficiency.

Description

Technical Field

[0001] This utility model relates to the field of optical communication, and in particular to the three-temperature test of optical emitting modules. Background Technology

[0002] After TOSA (Transmitter Optical Subassembly) is packaged and after the chip's reliability verification is completed, functional and electrical parameter testing equipment can only test one product at a time. Testing is done by switching the temperature of the test environment for three-temperature LIV (Liquid Optical Transmission Module), which is inefficient and wastes energy due to frequent temperature switching, resulting in high production costs. The applicant's Chinese patent CN 220421821 U discloses an 8-channel TOSA three-temperature LIV testing system. The 8-channel test board has 8 sockets for accommodating 8 TOSA products, and the pins of each TOSA product are connected to a microcontroller control board via connecting wires. The control board connects to the input port of PSSLIV-4 via a control relay. This approach tests the three-temperature LIV by switching the temperature of the test environment, which is relatively inefficient and wastes energy due to frequent switching of the three-temperature environment, resulting in higher production costs. Another method is to test a batch of products in the same environment before testing in another three-temperature environment, which is more energy-efficient. However, this method requires repeated plugging and unplugging of optical fibers, which can easily damage the end face of the product. Furthermore, repeated plugging and unplugging of optical fibers can affect the accuracy of the product test results, making it less efficient. It is also inconvenient to operate in high and low temperature environments, and it is easy to make mistakes in identifying the product's serial number. Utility Model Content

[0003] The purpose of this invention is to provide a TOSA three-temperature LIV test system that requires only one test box, reduces wiring, and has high system stability.

[0004] To achieve the above objectives, this utility model discloses a 100G EML TOSA three-temperature LIV and spectral automatic testing system, comprising a test board, a test box, a control microcontroller, and testing equipment. The test box connects to a heat flow meter to achieve a three-temperature environment. The test board has four sockets for inserting four products. The six pins of each product (LD+, EA, TEC+, TEC-, RTH+, RTH-) are connected to the control board via gold finger plug-in contacts. One end of the control board connects to the test board inside the test box, and the other end extends outside the test box and forms a data connection with the testing equipment.

[0005] After adopting the above solution, the present invention has the following effects:

[0006] After inserting the four products simultaneously, place the test board into the three-temperature test box. Multiple test boards can be used to improve efficiency. Since the control unit is placed outside the three-temperature test box, the three-temperature test box can be designed to be smaller, which saves gas and electricity in temperature control, thereby saving energy and reducing testing costs.

[0007] 2. By slotting one side of the test box, a test board is connected to the control circuit and plug-in circuit, eliminating the need for wiring connections and achieving a stable and reliable circuit. On the other side, components are inserted and removed alternately using two test boards via gold finger insertion and removal, allowing for product insertion and removal during testing, saving testing time and labor, and improving testing speed.

[0008] 3. Since the product and optical fiber do not need to be moved during the testing process, the end face of the product will not be scratched, resulting in product defects, thus improving the product's test pass rate.

[0009] 4. During the three-temperature test, LIV and spectrum can be tested simultaneously by switching via an optical switch, eliminating the need for two three-temperature tests, thus saving time and energy and improving product testing efficiency. Attached Figure Description

[0010] Figure 1 This is a structural block diagram of the present utility model;

[0011] Figure 2 This is a schematic diagram of the internal structure of the test box of this utility model.

[0012] Label Explanation:

[0013] 1. Test box; 2. Heat flow meter; 3. Test board; 4. LC / UPC fiber optic cable; 5. Control board; 6. Thermistor. Detailed Implementation

[0014] To explain in detail the technical content, structural features, objectives and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0015] The hardware components of this utility model are as follows:

[0016] 1. One computer; 2. Testing equipment (one PSS 60201 tester, two PSS OPS 18 testers, one Aligent34401A tester); 3. Microcontroller control board; 4. 4-channel test board; 5. One heat flow meter; 6. Test box.

[0017] like Figure 1 , 2As shown, four sockets are designed on test board 3 to accommodate four 100G EML TOSA products. Each product has six pins (LD+, EA, TEC+, TEC-, RTH+, RTH-). Each pin is connected to the control board via gold finger plug-in contacts. One end of control board 5 is located inside test box 1 and connected to test board 2. The other end of control board 5 extends to the outside of test box 1, achieving a compact three-temperature box and eliminating connecting wires. The control board controls relays to ensure that only one output port is connected at a time, which is then connected to the input port of PSS 60201. This enables the PSS 60201 to supply power to the four products (LD+, EA, TEC+, TEC-) and to acquire the resistance of RTH+, RTH-.

[0018] Four products are connected to the LC / UPC fiber optic cable, and the other end of the fiber optic cable is connected to the FC / UPC cable to one of the eight input ports of the PSS OPS 18. One output port FC / UPC cable is connected to the input port of the PSS LIV-4. The software controls which of the eight channels is connected to the PSS LIV-4 to achieve product power acquisition and testing.

[0019] Test board 3 has a socket for a thermistor, and the connecting wires RTH+ and RTH- are connected to a relay on control board 5 (not shown in the figure). The software determines the ambient temperature by the resistance value of the thermistor, and indirectly determines the temperature of the product. When the temperature reaches the set value, the software controls the heat flow meter 2 to control the temperature of test box 1.

[0020] The PSS 60201, PSS OPS 18, Aligent 34401A, and microcontroller control board are connected to the computer via serial-to-USB cables, while the AQ6317B spectrometer is connected to the computer via a GPIB-to-USB cable.

[0021] The software begins testing the LIV and spectrum of the first product at room temperature, then proceeds to test from 1 to 4. After the heat flow meter finishes testing, it changes the temperature and waits for the product to cool down. Once the temperature is reached (using a thermistor), the software automatically starts testing the low-temperature LIV and spectrum. Then, the heat flow meter switches to high-temperature output, waits for the product to heat up, and once the temperature is reached (using a thermistor), it tests the high-temperature LIV and spectrum.

[0022] This testing system is used to test the LIV and spectrum of 100G EML TOSA at three temperatures, and calculate the TE (transmission resistance) at three temperatures. It can test four products simultaneously. Computer software controls a microcontroller to switch relays to switch the four test channels, four optical switches to switch the four optical paths, and another optical power switch to switch between LIV and spectrum tests. The microcontroller also switches two thermistors to determine the temperature of the three-temperature testing environment. Based on these functions, it can simultaneously test the LIV and spectrum of four products at three temperatures and automatically calculate the TE.

[0023] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent shape or structural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A 100G EML TOSA three-temperature LIV and spectral automatic testing system, comprising a test board, a test box, a control microcontroller, and testing equipment, characterized in that: The test box connects to the heat flow meter to achieve a three-temperature environment. The test board has four sockets for inserting four products. The six pins of each product, LD+, EA, TEC+, TEC-, RTH+, and RTH-, are connected to the control board via gold finger plug-in contacts. One end of the control board is located inside the test box, and the other end extends outside the test box to form a data connection with the test equipment.

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