Hj. Bruckner et al., TAPER-WAVE-GUIDE INTEGRATION FOR POLARIZATION-INSENSITIVE INP INGASP BASED OPTICAL AMPLIFIERS/, Electronics Letters, 30(16), 1994, pp. 1290-1291
The authors report the simple integration of a 1.55mum optical amplifi
er taper with a coupling waveguide yielding a lateral beam divergence
of 7.5-degrees, a lateral spot size expansion factor of 9.5 and a coup
ling loss to a cleaved standard fibre of 2.6dB.