SPECTRAL STUDY OF A 1.55 MU-M MULTIMODE FP SEMICONDUCTOR-LASER USING THE TRANSMISSION-LINE LASER MODEL

Transmission-line laser modelling is a time-domain technique suitable for simulating large-signal dynamics and complex phenomena in semicond uctor lasers. We show that the transmission-line laser model (TLLM) is capable of predicting optical spectra in excellent agreement with the measured spectra of a commercially available 1.55 mu m Fabry-Perot (F P) laser, providing that scattering centres are introduced to simulate the effect of discrete scattering in or near the active region. The s ame model is also able to accurately predict the light-current curve, the pulse-modulation response and the relative-intensity-noise spectra of the laser. Thus, the TLLM can be applied to design and optimize sh ort-haul optical communication systems using these commercial FP laser s.