Differential Quantum Efficiency of Distributed Reflector (DR) Laser

Abstract

The research on all optical communication is going on all around the world to meet the high demand of data and telecommunication. Laser which was invented for emitting electromagnetic radiation is the most important component in optical communication. In this study we calculate the differential quantum efficiency of a DR( Distributed Reflector laser) with wire like active region. The internal quantum efficiency is shown to be a strong function of cavity length. The results for single and multiple quantum well structures are compared.

Keywords: Distributed Reflector laser(DR), Quantum Well(QW),Distributed Feedback Laser (DFB), Distributed Bragg Reflector (DBR), Cavity Length(CL).