Nonlinear Dynamics in Semiconductor Lasers 2023 - Abstract

Schatz, Richard

Modal stability and noise of cavity enhanced DMLs

The directly modulated laser (DML) is a key component in optical datacom due to its simple fabrication, high modulation bandwidth and high output power. The modulation bandwidth of single section DML:s is limited by electrical parasitics, thermal effects and overdamped response at high bias. In multi-section DML:s, the bandwidth can be enhanced by utilizing the wavelength selectivity of the laser cavity. However, this will also affect the noise, linewidth, chirp and side mode suppression of the DML. Three effects will be discussed; detuned loading, photon-photon resonance and chirp to intensity conversion.