Design of an InGaAsP/InP compact integrated optical depolarizer

摘要

In this paper, we propose and demonstrate two integrated optics InGaAsP/InP depolarizer circuits. The first one is based on the Lyot depolarizer configuration, while the second one is based on the Mach-Zehnder configuration. Detailed simulation, using three-dimensional full vectorial beam propagation method, shows that a high-index contrast material allows the design of a compact polarization insensitive depolarizer. For the first design, an output degree of polarization (DOP) less than 0.1 is obtained for light sources with spectral widths larger than 25 nm, while for the second one, output DOP less than 0.06 is obtained for light sources with spectral widths larger than 40 nm. (C) 2015 Optical Society of America