High-performance 1.3-/spl mu/m VCSELs with GaAsSb/GaAs quantum wells

We have demonstrated CW and high-speed performance of GaAsSb/GaAs VCSELs lasing at a wavelength of longer than 1.27 /spl mu/m. 1.295 /spl mu/m lasing was achieved with a threshold of 1.1 mA. Single-mode output of 0.46 mW, and 4.5-GHz bandwidth was obtained at 1.27 /spl mu/m. Thus, GaAsSb/GaAs VCSELs should be viable low-cost light sources for high-capacity optical fiber systems.