Author :
Tohmori, Y. ; Suzaki, Y. ; Fukano, H. ; Okamoto, M. ; Sakai, Y. ; Mitomi, O. ; Matsumoto, S. ; Yamamoto, Manabu ; Fukuda, M. ; Wada, M. ; Itaya, Y. ; Sugie, T.
Abstract :
A 1.3 μm laser has been developed with a butt-jointed selectively grown spot-sire converter (SSC). The SSC vertically tapered waveguide and strained multiquantum well (MQW) active region are independently optimised. The laser was buried with semi-insulating InP to reduce optical loss in the SSC. A threshold current of 7 mA and an output power of >20 mW were obtained. Minimum coupling loss to a flat-end fibre of 1.06 dB was achieved. Long-term stability was also confirmed
Keywords :
laser stability; optical couplers; optical losses; quantum well lasers; semiconductor growth; waveguide lasers; 1.06 dB; 1.3 mum; 20 mW; 7 mA; InP; MQW active region; butt-jointed; flat-end fibre; independently optimised; long-term stability; minimum coupling loss; optical loss; output power; selectively grown; semi-insulating InP; spot-size converted 1.3 μm laser; strained multiquantum well active region; threshold current; vertically tapered waveguide;
