Broad-Band Laser Circuit Command Design for Antenna Deport

The fiequency response of a LASER diode generally presents an electrooptic resonance. The amplitude and the frequency resonance vary with the bias current. In view to improve the LASER response, we present an original method for LASER command circuit design. It can also be applied to a differential amplifier comprising the synthesis of an active load as well as a one stage amplifier. The synthesis, carried out. witH lumped elements, markes no a priori assumptions about network topology, and an illustration is shown for an antenna deport application in the 10.7 - 14.5 GHz bandwidth using an HEMT transistor.