Abstract
A high performance modulator driver circuit is presented using 4″ InP SHBT technology. The IC was developed for driving EAM modulators in OC-192 (10 Gbit/s) and with forward error correction (FEC: 10.7 Gbit/s or 12.5 Gbit/s) optical fibre systems. The monolithic integrated circuit features output amplitude control, output crossing point control and output DC offset control. Measured results show the circuit operates at 10 to 12.5 Gbit/s with a swing of 3.1 Vp-p at each output and 20/18 ps rise/fall times. The power dissipation is 1.4 W with a standard power supply of −5.2 V.
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