InAs/InP quantum dot based lasers and effect of optical feedback
Résumé
The effect of controlled optical feedback has been investigated for InAs/InP laser structures operating in the 1.55 µm fiber window. Mode locked lasers in particular show extremely small phase noise when subjected to optical feedback, implying a very low timing jitter which is of interest for many applications. Owing to growth optimisation, p-type doped directly modulated DFB lasers have also been shown to exhibit a robustness to optical feedback that complies with 10 Gb/s isolator free operation