We developed 800 Mbitlslch, 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 tum-on delay time is reduced by edge-pulse modulation method. In receiver module, 4 GHz-bandwidth receiver IC enables to suppress waveform distortion caused by optical power variation. For assembability and reliability, planar micro lens arrays are used for optical coupling and hermetic sealing.