If. Lealman et al., INGAASP INP TAPERED ACTIVE LAYER MULTIQUANTUM-WELL LASER WITH 1.8-DB COUPLING LOSS TO CLEAVED SINGLEMODE FIBER/, Electronics Letters, 30(20), 1994, pp. 1685-1687
Tapered active layer MQW BH lasers with spot sizes closely matched to
cleaved fibre are reported. A record low coupling loss of 1.8dB to 10
mu m core cleaved singlemode fibre has been obtained for a device with
an 800 mu m long taper.