High-speed 1.3-µm LED transmitter using GaAs driver IC

For an application to a high-speed LED driver, a shunt drive circuit which is eminently suitable for GaAs IC's has been developed. This circuit has been embodied in a monolithic GaAs IC. A compact hybrid IC of an LED transmitter, i.e., a combination of this GaAs IC and a high-speed LED, has been fabricated. A high bit rate (NRZ 4000 M bit/s) transmission was demonstrated by using this LED transmitter.