Vertical-cavity optical modulator for 1.32 µmgrown on a graded (InGaAl)As buffer

This is the authors' abstract. We don't add key points for this paper.

The authors describe an (InGaAl)As:GaAs vertical-cavity optical transmission modulator operating at 1.32 µm, and having a single-pass contrast ΔT/T of 24% at < 5 V bias. Device performance and yield have been improved, using a specially designed buffer that compensates for incomplete strain relaxation.