Tunable and multiple-wavelengths/temporal output from gain-switched diode laser and a four Bragg-grating fibre

In this paper we have demonstrated a single gain-switched InGaAs/GaAs diode lasers, and a four Bragg-grating fibres spectral narrowing, selective wavelength tuning and multiple picosecond pulses at four separate, discrete wavelengths. And it was found that the selection of the lasing wavelength was dependant upon the externally applied RF frequency of the gain-switched diode laser.