Efficient 100 Mb/s driver for electroluminescent diodes

The application of high-radiance electroluminescent diodes in optical communication systems will require efficient, high-current, high-speed modulation circuits capable of driving the low-impedance diode load. A technique which has proved to ho useful in driving such diodes at a 100 Mb/s rate, using a two-stage transistor emitter-follower circuit and a suitable matching network, is described.