Waveguide grating spectral phase-shifter for temporal femtosecond pulse splitting

Abstract : A waveguide grating based on a mirror causes a 2pi phaseshift of controllable slope in the spectrum of a femtosecond pulse giving rise to an adjustable, lossless temporal pulse splitting. A representation of resonant reflection based on phenomenological parameters enables the designer to achieve the synthesis of the mirrored waveguide grating structure exhibiting the desired temporal pulse shape. The example of a temporal beam splitter under fabrication is presented. Experimental results will be presented at the conference.