Abstract

Multisection laser diodes provide functionalities like wavelength tuning, self-pulsations (SP) up to hundreds of GHz, or chaotic emission. In this context, it is often desirable to stabilize the intended regime of operation. Among various methods of stabilization, the widely applied time-delayed feedback control (TDFG) introduced by Pyragas plays an outstanding role. It is self-adapting and noninvasive, i.e. the control signal vanishes as long as the laser operates in the target state. Ultrashort time scales demand an all-optical version of TDFG, which has been early proposed [1] but not implemented yet. We present a first experimental and theoretical study of all-optical TDFG of unstable continuous wave (cw) emission [2] and of SP at 26 GHz of a multisection laser.

© 2007 IEEE