Width and wavelength-tunable optical RZ pulse generation and RZ-to-NRZ format conversion at 10 GHz using spectral line-by-line control

We demonstrate a method for tunable optical return-to-zero (RZ) pulse generation with large tunable wavelength range (1532/spl sim/1562 nm) and pulsewidth range (/spl sim/3-50 ps) at 10 GHz based on spectral line-by-line pulse shaping of a wavelength-tunable mode-locked laser. All-optical RZ-to-nonreturn-to-zero format conversion is also demonstrated.