High-performance electromagnetic susceptibility of plastic transceiver modules using carbon nanotubes

A high-performance electromagnetic susceptibility (EMS) of plastic transceiver module using carbon nanotube (CNT) composites is proposed. The shielding effectiveness (SE) of the CNT composites increases as the weight percentage of the CNTs increases. The SE of CNT composites with 50% weight percentage CNTs exhibits 38-45 dB. The EMS performance is experimentally evaluated by the eye diagram and bit-error-rate test for a 2.5-Gbps light-wave transmission system. The results show that the eye diagram and power penalty caused by the radiated interference of the plastic transceiver modules are dependent on the EMS. The plastic transceiver modules with the more weight percentage of the CNTs exhibit a higher SE, and hence show effective EMS performance, a better mask margin, and a lower power penalty. The likely cause for effective EMS performance with higher weight percentage CNTs of the plastic transceiver modules is due to the high-aspect ratios of CNTs, more structural to form overlapping conductive networking to provide high SE. Therefore, the CNT composites with their high SE are suitable for packaging high-performance EMS optical transceiver modules used in fiber to the home (FTTH) lightwave transmission systems.