Dispersion compensation based on sampled fiber Bragg gratings fabricated with reconstruction equivalent-chirp method

Using uniform phase mask and conventional fabrication technology with submicrometer rather than nanometer precision, a pure third-order dispersion-compensating fiber Bragg grating (DCFBG) and a tunable slope DCFBG are demonstrated with high performance based on the combined reconstruction equivalent-chirp method and an error correction technique. The former DCFBG has a dispersion varying from ∼1000 to ∼-1000 ps/nm in the 100-GHz passband and group delay ripple is less than ±5 ps. The latter has a dispersion slope varying from -150 to 150 ps/nm² within the 3-nm passband, and its group delay ripple is less than ±10 ps.