Electrically wavelength-tunable picosecond pulses generated from a self-seeded laser diode using a compensated dispersion-tuning approach

We developed a compensated dispersion-tuning approach to generate electrically wavelength-tunable short pulses from a self-seeded Fabry-Perot laser diode. Single-mode pulses with a sidemode-suppression ratio over 30 dB are obtained across most of the 18.5-nm tuning range in the fiber configuration. The use of both dispersion-compensating fiber and standard single-mode fiber with equal and opposite group velocity dispersion allows electrical tuning to be performed at a constant repetition rate.