Interpretation of distributed-feedback-laser spectrum using reflection properties of Bloch waves

Abstract

We demonstrate that the phase and amplitude of the reflection coefficient for Bloch waves can be useful tools in understanding and predicting the spectral characteristics of distributed-feedback lasers. We further apply the Bloch wave formalism for engineering the asymmetry of the spectral response with respect to the gap through a judicious termination of the laser facets. © 2007 American Institute of Physics.