M. Wada et al., HIGH-COUPLING-EFFICIENCY LASER-DIODES INTEGRATED WITH SPOT-SIZE CONVERTERS FABRICATED ON 2INCH INP SUBSTRATES, Electronics Letters, 31(24), 1995, pp. 2102-2104
Laser diodes monolithically integrated with spot-size converters opera
ting at 1.3 mu m and having an almost circular far-field pattern and a
-1.3 dB butt-coupling-loss-to-fibre with wide alignment tolerance hav
e been successfully fabricated on 2 inch substrates. The overall devic
e length is as short as 450 mu m.