1 mW CW 38 nm Tunable 1.5 μm VCSELS with Tuning Voltage Below 4 V

1.5 mum waveband optically pumped tunable VCSELs with 38 nm tunability at tuning voltage values below 4 V were fabricated. 5 m aperture devices show 1 mW single mode output power with 40 dB side mode suppression ratio