High-Speed Oxide Confined 850-nm VCSELs Operating Error-Free at 40 Gb/s up to 85<formula formulatype="inline"><tex Notation="TeX">$^{\circ}{\rm C}$</tex></formula>

We present the temperature dependence of the performance characteristics of our latest generation high-speed oxide confined 850-nm vertical cavity surface-emitting lasers (VCSELs). Using a 7-μm oxide aperture diameter VCSEL, we demonstrate a maximum modulation bandwidth of ~ 27 GHz at room temperature and ~ 21 GHz at 85°C. With a new high-speed optical receiver, these bandwidths enable error-free data transmission (defined as a bit-error-rate <; 10 ^-12 ) at bit-rates up to 47 Gb/s at room temperature, and up to 40 Gb/s at 85°C.