High-speed 1.5 mu m self-aligned constricted mesa DFB lasers grown entirely by MOCVD

Ultrahigh-speed 1.5 mu m wavelength self-aligned constricted mesa GaInAsP-InP distributed-feedback lasers grown entirely by low-pressure metalorganic chemical-vapor deposition are discussed. A self-aligned process was applied to lower the stray InP junction capacitance to as low as 1.6 pF. A record bandwidth of 13 GHz in the 1.5 mu m wavelength region was demonstrated.>