TY - JOUR TI - Direct modulation properties of 1.55-μ InGaAsP/InP microring lasers AU - Mikroulis, S. AU - Roditi, E. AU - Syvridis, D. JO - Journal of Lightwave Technology PY - 2008 VL - 26 TODO - 2 SP - 251-256 PB - SN - 0733-8724, 1558-2213 TODO - 10.1109/JLT.2007.909907 TODO - Light extinction; Mathematical models; Q factor measurement; Semiconducting indium compounds; Semiconductor lasers, Direct modulation; Extinction ratio; Microring laser; Multimode rate equation model, Light modulation TODO - The modulation properties of 1.55-μ InGaAsP/InP microring lasers are investigated using a multimode rate equation model. A detailed study, with respect to Q-factor and extinction ratio calculations, is carried out as a function of different microring's key design and operating parameters. The modulator's performance study shows the possibility for a successful operation at a bit rate of 2.4 Gb/s for radii between 30 and 50 μ and proper values for the bus waveguide reflectivity. © 2008 IEEE. ER -