Design rules for Raman lasers based on SOI racetrack resonators

In this paper, the detailed modeling of Raman lasers in silicon-on-insulator guided-wave racetrack resonant microcavities is developed. Modeling based on fullvectorial equations and systematic design rules are presented for the first time. Simulation results are compared with experimental and theoretical results in literature, demonstrating a very good agreement. Moreover, parametric investigations including waveguide sizes, pump and Stokes coupling factors, cavity shape, polarization states, and waveguide orientation are presented, and their influence on the laser features are discussed.