U. Fiedler et al., FEEDBACK POWER PENALTY IN 1-GBIT S SINGLEMODE FIBER TRANSMISSION WITHBUTT COUPLED VCSEL SOURCE/, Electronics Letters, 30(20), 1994, pp. 1698-1700
The authors have transmitted data at 1 Gbit/s over singlemode fibre wi
th a bit error rate (BER) of less than 10(-11) using intensify modulat
ed butt coupled VCSELs and direct detection. The laserfibre coupling e
fficiency exceeds 90% for singlemode operation and the maximum power i
n the fibre is 0.5 mW. The power penalty for -10 dB feedback is as low
as 1.5 dB.