3.125 Gbps × 8 channels parallel interconnection module with low height MT receptacle connector for single mode fibers

An eight channel optical parallel transmitter/receiver module, for the optical parallel interconnection over VSR (Very Short Reach), which consists of an optical sub assembly (OSA), lead frame package with an IC on the heat spreader and newly designed low height receptacle was demonstrated. Using single mode fiber provided low skew and low height dimension of the receptacle system which is suitable for application to the small pitch between the printed circuit boards in a system rack of the equipment. To reduce the distortion of the signal and crosstalk between the channels, the microstrip line structure consisted of polyimide material and thin metal layers applied in the optical subassembly. Transmission bit rate as high as 3.125 Gbps/ch are achieved.