High performance TM-pass polarizer via subwavelength grating bandgap engineering

Abstract

Silicon photonics systems exhibit a strong birefrin- gence which makes polarization management critical. Here we demonstrate, with full 3D-FDTD simulations, a low-loss and high- extinction ratio TM-pass polarizer based on tilted subwavelength gratings that reflects the TE0 mode into the TE1 mode, with a 150 nm bandwidth.