1.5 μm Vertical-Cavity Surface-Emitting Lasers

Abstract

VCSELs emitting in the 1.3 and 1.55 μm regions could be particularly useful as low cost sources for optical fibre telecommunications applications because mode-matched devices can be coupled to single-mode fibres with high efficiency and good alignment tolerance. The absence of cleaved facets also permits on-wafer characterisation of devices.