Tunable integrated pulse shaping devices

We report on the design and fabrication of tunable integrated pulse shaping devices. These devices are realized in the InP/InGaAsP material system and contain an arrayed waveguide grating pair and an array of phase modulators. An arbitrary discrete phase profile can be applied to a pulse propagating through the pulse shaper. The bandwidth of the pulse shaper and the AWG channel spacing are chosen to be able to compress chirped picosecond pulses down to 300fs. Further integration with a modelocked laser source then allows for the realization of a femtosecond pulse source. Different geometries for the device are presented