Ultra-Short Novel Transverse Magnetic to Transverse Electric Polarization Rotator in Hybrid Integration of InGaAsP/Silicon-on-Insulator Technologies

چکیده مقاله

This article describes a full vectorial two and three dimensional analysis of a novel polarization rotator (transverse magnetic to transverse electric polarization) using the finite element method. The core, substrate, and cladding of the polarization rotator are InGaAsP, SiO2, and SiO2/air materials, respectively, suitable in an InP-based membrane technology. The effect of several parameters such as refractive index of core, the ratio of the width and height of the polarization rotator, and wavelength of incident light on the rotation angle, polarization conversion length, and polarization conversion efficiency are investigated. The simulation results show that the rotation length is less than 1µm at 1.55µm wavelength and a maximum rotation of 89 could be achieved to have a linear polarization at the output end of polarization rotator.