Extensible multichannel optical module test system

Abstract

The invention provides an extensible multichannel optical module test system, which comprises a PC, a switch, a bit error tester, a test board, an optical module, a multichannel attenuator optical power meter, an optical switch and an optical oscilloscope, and is characterized in that the PC is connected with the switch, the switch is connected with the bit error tester, the test board, the multichannel attenuator optical power meter and the optical oscilloscope, the bit error tester is connected with the test board, and the optical switch is connected with the optical oscilloscope. The test board is respectively connected with the plurality of optical modules, the multichannel attenuator optical power meter is respectively connected with the optical modules and the bit error tester, one end of the optical switch is connected with the plurality of optical modules, and the other end of the optical switch is connected with the optical oscilloscope. The beneficial effects of the invention are that according to the multi-channel system, the test boards are connected in parallel to expand the slot of the optical module, the communication between each test board and the optical module is independent, and the error code test channel corresponding to each channel is also independent; due to the fact that the test system integrates module configuration writing, debugging, testing and coding, the design of the independent test board enables the communication speed to be increased by several times.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a test system of an expandable multi-channel optical module. Background technique [0002] With the rapid popularization of the Internet of Things, the demand for optical communication products has steadily increased every year, and the production efficiency and performance testing of optical modules are very important. [0003] The existing manufacturers' optical module multi-channel test system communicates with the optical module through serial port or USB to IIC. This method is to communicate with multiple modules through time-sharing, and it cannot truly realize simultaneous testing of multiple channels. [0004] The existing manufacturer's test board is generally a board that can be inserted into 16 or 32 modules. The test board uses a single-chip microcomputer to communicate with a PC through a serial port or USB. The single-chip microcomputer is a single thr...

AI Technical Summary

Problems solved by technology

[0003] The upper computer of the existing manufacturer's optical module multi-channel test system communicates with the optical module through a serial port or USB to IIC. This method communicates with multiple modules by time sharing, and cannot truly realize simultaneous testing of multiple channels.

[0004] Existing manufacturer test boards generally have 16 or 32 modules plugged into one board. The test board uses a single-chip microcomputer to communicate with the PC through a serial port or USB. The single-chip microcomputer is single-threaded. If you want to communicate with multiple modules at the same time, you can only divide the time Chip to achieve, although this can achieve multi-channel debugging optical module, but the efficiency will not improve a lot

[0005] Existing manufacturer’s BER tester is designed to output a signal from one channel, and select a channel for the module signal through an optical switch. It is also impossible to test two modules at the same time, and the BER is tested by time-sharing, so that the test efficiency will not be improved too much. It saves the plugging and unplugging time of the module

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