A higher-order dispersion compensator including a chromatic dispersion compensator
coupled to receive an input signal; a phase modulator optically coupled to the
chromatic dispersion compensator, wherein the phase modulator selectively chirps
portions of the data pulses; and a tunable dynamic dispersion element coupled to
receive the phase modulated signal. The tunable dynamic dispersion element includes
a first waveguide having a first non-linearly chirped grating tuned to reflect
the polarization controlled signal and having a first reference reflection point;
and a first tuning mechanism that tunes the first grating.