Ultrawideband Wavelength-Tunable Hybrid External-Cavity Lasers

We demonstrate two novel hybrid lasers with the same III–V ultrawideband gain medium. An hybrid III–V/Si laser and its III–V/SiO2 counterpart exhibit high fiber-coupled output power without booster semiconductor optical amplifier (up to +13 dBm for III–V/Si and +10 dBm for III–V/SiO2) and a record tuning range (respectively, 95 nm and 66 nm) over the C and L bands with side mode suppression ratio greater than 35 dB.