Performance of AlGaAs/GaAs quantum wire lasers fabricated on sub-/spl mu/m-pitch gratings: in both distributed feedback- and wire-directions

Summary form only given. With the rapid progress of modern technologies in epitaxial growth and lithography, many challenges for sophisticated optoelectronic devices, incorporating low-dimensional structures inside for example, have been increasingly attempted. One of those is the effort to materialize quantum wire (QWR) gain coupled (GC) distributed feedback (DFB) lasers, in which a purely periodic-gain structure is expected to offer a high yield, single mode emission without facet coatings or quarter-wave-shifted gratings, high immunity from feedback and low chirp under high speed modulation. In the presentation, challenging work on the successful fabrication of the so-called one-step QWR GC-DFB lasers in directions perpendicular to the wire axis is targeted along with a high-density of QWR array lasers in directions parallel to the wire.