All-optical, transform-limited and high mark-space-ratio soliton pulse train generation using both CDPF and NOLM

Summary form only given. Transform-limited pulse train at multiples of 10 GHz repetition frequency with high mark-space-ratio (MSR: ratio of pulse FWHM to time cycle) has increasing applications in optical communications. Comblike dispersion-profiled fibre (CDPF) is a promising compression scheme due to its simplicity and flexibility, splicing alternatively the dispersion shifted fibres (DSF, dispersion as 0 at 1550 nm) and the standard telecommunication fibres (STF, dispersion as -20 ps/sup 2//km). But with CDPF or conventional NOLM alone, it's difficult to convert optical beat signal into transform-limited soliton train with MSR higher than 1:10. We propose here for the first time, to our knowledge, an effective all-optical transform-limited pulse generation configuration with both CDPF and NOLM, with output pulse MSR higher than 1:40 at multiples of 10 GHz.