The authors have developed a polychromatic coupled cavity model for passive optical structures to investigate the underlying 'cold-cavity' mode spectrum of active devices, such as semiconductor lasers. The model is validated using a simple Fabry-Perot test structure and then used to study how the mode spectrum of a semiconductor laser subject to external optical feedback is affected by variations in the optical properties of the configuration (in the 'cold-cavity' limit). Significant differences in behaviour are observed in the short and long cavity limits, indicating the potentially important role the mode spectrum has in determining the dynamics of such configurations.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Computer Networks and Communications
- Electrical and Electronic Engineering