Design of a compact SOI polarization rotator for mid-IR application

Abstract

Abstract-Design of a compact polarization rotator (PR) exploiting power coupling through phase matching between the TM mode of a strip waveguide (WG) and TE mode of a vertical slot WG is presented. Optimized cross sectional dimensions of the coupler have been achieved to use this device as a compact PR at 3 µm wavelength with device length of just 2 mm. We also investigate the device performance at the operating wavelength (λ) = 1.55 µm.

Design and Optimization of Polarization Splitting and Rotating Devices in Silicon-on-Insulator Technology

“…Actually, main PMC specifications are essentially oriented to simple fabrication processes, relaxed fabrication tolerances, and wide operative bandwidth for a suitable device operation in standard C and L communication bands. Recently, PMC applications have been also extended to the unexplored and intriguing midinfrared wavelength region, confirming the fundamental role that such devices play in integrated photonics [53,54].…”