  We demonstrate theoretically that robust mode-locking can be achieved on a
semiconductor chip with a waveguide array architecture. The waveguide arrays
are used as an ideal saturable absorption mechanism for initial noise start-up
as well as pulse shaping and stabilization. The cavity gain is provided by an
injection current and forward biasing of the semiconductor material. The
technology can be integrated directly with semiconductor architectures and
technologies, thus allowing for the potential of an on-chip, broadband device.
