.A novel structure of DFB laser for the generation of 40 GHz self-pulsation[J].Optoelectronics Letters,2008,4(1):5-8 A novel structure of DFB laser for the generation of 40 GHz self-pulsation Abstract:       1.55-μm InGaAsP-InP two-section DFB lasers with varied ridge width, both gain-coupled and index-coupled, have been fabricated. Self-pulsations with frequencies around 40 GHz are observed. The related mechanism and the tunability of generated self-pulsations is studied. Hits: 3690 Download times: 199 View Full Text    Download reader