800 Mbit/s/ch×12 ch, true DC-coupled parallel optical interconnects using single-mode fiber and 1310 nm LD array

We developed 800 Mbit/s/ch, 12 ch, DC-coupled parallel optical interconnect modules, and confirmed high speed parallel transmission. For skew reduction between channels, we use single mode fiber array. In transmitter module, laser turn-on delay time is reduced by edge-pulse modulation method. In receiver module, 4 GHz-bandwidth receiver IC enables one to suppress waveform distortion caused by optical power variation. For assemblability and reliability, planar micro lens arrays are used for optical coupling and hermetic sealing