What tests are needed for the optical transceiver

May 27 , 2021

With the popularization of optical fiber networks and the continuous development of optical communication technology, today's market and users have increasingly strict requirements on the quality of optical modules. Generally, optical modules must undergo rigorous testing before they leave the factory to ensure quality and performance. Ensure the stability of users during use. So, what tests are needed for the transceiver? I hope that the following introduction can help you find the answer.

Fiber optic transceiver test before assembly

Before assembling the fiber optic transceiver, incoming quality control (IQC) and surface-mounted component inspection are very important. IQC is the process of controlling the quality of optical fiber materials and parts used to manufacture products before starting production. In the field of fiber optic transceiver manufacturing, suppliers must test the optical transmitter module (TOSA), optical receiver module (ROSA) and optical transmitter and receiver module (BOSA) to ensure the quality and performance of the transceiver. For the inspection of surface mount components, it is mainly used to check whether the printed circuit board (PCB) is correct and whether there is contamination to ensure the performance of the fiber optic transceiver.

Fiber optic transceiver test after assembly

After the optical module is assembled, a large number of parameter tests are required to test the signals at the transmitting end (TX) and receiving end (RX). Only when the average output optical power, extinction ratio, optical modulation amplitude (OMA), bit error rate (BER) test and other parameters meet the MSA standard, the performance and quality of the module can be proved.

Average output optical power measurement

The average output optical power is an important parameter of the transceiver, which directly affects the communication quality of the module. It is the average optical power of the transceiver under normal operating conditions. The average output optical power measurement can be realized by an optical power meter to test the optical power of the transmitting end. For the transceiver used for long-distance transmission, the average optical power is greater than the maximum input optical power.

All tests of fiber optic transceivers and Mux Demux shall be conducted in the most onerous condition. Then they can be put into use. If you have any pre-sales and after-sales questions, you can directly communicate with us.

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