V-groove Distributed Feedback Bragg Laser for 1.3-1.55 mu m Operation.

We describe a V-groove distributed feedback Bragg laser operating at lambda = 1.5 mu m. A second order diffraction grating has been defined by electron beam writing and transferred using ion beam milling after the crystal growth was completed. A single longitudinal mode operation with a mode rejection ratio larger than 5000:1 has been obtained under modulation rate of 1GHz. The techniques used in this work can be applied to other types of buried heterostructure lasers.