MICROWAVE SMALL-SIGNAL EQUIVALENT-CIRCUIT MODEL FOR MULTIELECTRODE LASERS

A small-signal equivalent circuit model of the multielectrode lasers w ith saturable absorbers based on a modified formulation of the rate eq uations is presented. The Auger recombinations are taken into consider ation because they largely modify the carrier lifetime at the higher c arrier densities that occur in such structures. An analysis of the bis tability of the power-current characteristic is presented. The model p redicts an extremely high resonance amplitude as well as a very large bandwidth up to the millimetric range, which can be very interesting f or microwave optical links. The results obtained using this model are comparable to those obtained using a large-signal equivalent circuit m odel implanted on SPICE, the results of which are published elsewhere. The equivalent circuit obtained is a tool suitable for the study of t he behavior of the multielectrode laser within a microwave optical sys tem. (C) 1994 John Wiley & Sons, Inc.