The full characterization of Fabry-Pérot lasers using the Fourier series expansion method

The characterization of the performance of Fabry-Pérot lasers based on measurements of the amplified spontaneous emission (ASE) spectrum and analysis using the Fourier series expansion method is presented in this paper. We explain how all the parameters of net modal gain, internal loss, quasi-Fermi level separation, linewidth enhancement factor, injection efficiency, and geometric spontaneous emission factor, can be obtained providing a unique method of extracting a large number of parameters from one simple measurement.