four-wave mixing (FWM);
semiconductor lasers;
semiconductor ring lasers (SRLs);
D O I:
10.1109/LPT.2007.915660
中图分类号:
TM [电工技术];
TN [电子技术、通信技术];
学科分类号:
0808 ;
0809 ;
摘要:
We report on cavity-enhanced four-wave mixing (FWM) in 1.55-mu m semiconductor ring lasers (SRLs). External optical injection into one of the cavity modes of the ring laser induces a FWM signal up to detuning frequencies of 1.5 THz. Mode-locked signals at 34.5 GHz with a linewidth as small as 5 kHz were measured. Initial results show similar characteristics with a distributed feedback laser monolithically integrated next to the SRL.