Suppression of Avoided Mode Crossing in High-Index- Contrast AlGaAs-on-Insulator Microresonators

We report the suppression of avoided-mode-crossing induced by polarization mode-coupling in a high-index-contrast AlGaAs-on-insulator microresonator. An avoided-mode-crossing-free TE-mode anomalous-dispersion microresonator is demonstrated by reducing the cavity lifetime of the coupled TM mode.