Case study of on-board optical module failure induced by PDMS

On-board optical module, which implements photoelectric transformation, has been widely applied in communications industry. Any contamination blocking optical transmission will decrease its power distinctly, therefore, the cleanliness of interface between the OBT(On-board Transceiver) and MT ferrule is in need of great attention. In this paper, we will show a case about on-board optical module failure due to pollution during the production. Through a systematic failure analytical method and using material analysis techniques, we identified the unknown matter and found out the roots of the problem.