Detailed transfer matrix method-based dynamic model for multisection widely tunable GCSR lasers

A theoretical model suitable for both static and dynamic analysis of widely tunable multisection Grating assisted codirectional Coupler with rear Samp led grating Reflector (GCSR) lasers is described in this paper. For the fir st time wide static tunability as well as transient behavior of such lasers are simulated. The theoretical model is based on the Transfer Matrix Metho d (TMM) in combination with multimode rate equation analysis and takes into account a number of physical processes in the laser cavity such as longitu dinal mode spatial hole burning, nonlinear gain compression, and refractive index changes with carrier injection. Static and dynamic characteristics s imulated using the proposed approach agree with the experimental results pr esented in the paper.