High-frequency modulation of 1.52 μm vapour-phase-transported InGaAsP lasers

Abstract

We describe modifications to the recently demonstrated vapour-phase-transported laser to reduce the parasitic capacitance by an order of magnitude, and increase the 3 dB bandwidth for CW 1.52 μm lasers to 8 GHz. The parasitic and nonlinear limitations to this bandwidth are discussed.