Systematic investigation of InAs/InP quantum-dash based lasers under external optical feedback
19 May 2008
The tolerance to optical feedback of InAs/InP quantum dash-based lasers is reported for several structures exhibiting differing values of the linewidth enhancement factor and damping factor. An analysis of the onsets of coherence collapse is carried out based on the experimental dynamic parameters extracted for each structure. It is shown that the relevant significant parameter to explain the optical feedback tolerance for this low dimensional material system is the differential gain. (c) 2008 American Institute of Physics.