A tractable above-threshold model for the design of DFB and phase-shifted DFB lasers
Abstract
A model, based on the transfer matrix method and extended to above-threshold conditions in order to be used in the analysis and design of distributed feedback (DFB) structures, is presented. It provides the oscillation parameters as lasing frequency and net material gain, the linewidth estimation and output power, the photon density, carrier density, and effective refractive index profiles. This model can be used with or without facet reflectivities and with a number of symmetric or asymmetric phase shifts. It takes into account nonuniform envelope material gain and nonuniform index saturation. It is easily adaptable to any structure modifications.
- Publication:
-
IEEE Journal of Quantum Electronics
- Pub Date:
- April 1991
- DOI:
- 10.1109/3.83329
- Bibcode:
- 1991IJQE...27..946O
- Keywords:
-
- Carrier Density (Solid State);
- Distributed Feedback Lasers;
- Lasing;
- Phase Shift;
- Refractivity;
- Spectral Line Width;
- Boundary Conditions;
- Bragg Angle;
- Lasers and Masers