Generation of electrically wavelength tunable (Δλ= 40 nm) singlemodelaser pulses from a 1.3 µm Fabry-Perot laser by self-seedingin a fibre-optic configuration

Abstract

A novel wavelength tunable self-seeding configuration without classical wavelength selective elements is presented. A multimode gain-switched Fabry-Perot laser shows singlemode emission in this configuration. The extremely simple setup consists only of the laser diode, a fibre coupler and 1 km of dispersion shifted fibre. The lasing wavelength is controlled by varying the repetition frequency. A sidemode suppression ratio better than 20 dB over a 40 nm tuning range is achieved.