At OFC 2015, the largest global conference and exposition for optical communications, imec, its associated lab at Ghent University (Intec), and Stanford University demonstrated a compact germanium (Ge) waveguide electro-absorption modulator (EAM) with a modulation bandwidth beyond 50GHz.   Combining state-of-the-art extinction ratio and low insertion loss with an ultra-low capacitance of just 10fF, the demonstrated EAM marks an important milestone for the realization of next-generation silicon...