Modeling and Performance of a Guided-Wave Optical Angular Velocity Sensor based on Raman Effect in SOI

In this paper, We report, for the first time to the best of our knowledge, the detailed modeling and design of a guided-wave optical angular-velocity sensor based on Raman amplification in a silicon-on-insulator resonant cavity. Theoretical results for continuous-wave Raman laser emission are compared with experiments in the literature, demonstrating very good agreement. The model includes the influence of a number of physical effects on the propagation of both counterpropagating pumps and Stokes waves, such as stimulated Raman scattering, two-photon absorption, free-carrier dispersion, self- and cross-phase-modulation induced by the Kerr effect, and the lock-in effect. Investigation of optical dithering features by intracavity phase modulation is also presented. Performance is derived to optimize the device sensitivity for both medical, robotics, automotive, and entertainment gyro applications.