Design methodology for metal-clad polarizer in SOI waveguides

Surface Plasmon Modes of Dielectric-Metal-Dielectric Waveguides and Applications

“…This property has been used in the early polarizer designs [5]. It is this mode which also plays a vital role in the recently designed polarizers for silicon on insulator (SOI) waveguide [13]. The Fig.6shows the modal field profiles of the bound modes of the dielectricmetal-dielectric waveguide for 3 = 3.0822 and the other parameters as 2 = (-44.9512 -j5.9417) with the thickness = 50 nm at 0 = 1.15 μm for three different values of 1 .…”

“…A metal-cladplasmonic waveguide can be designed to act as a polarizer in integrated optical circuits [3][4][5][6]12,13]. The metallic layer provides polarization discrimination because losses for TM modes were higher than losses for TE polarized modes due to penetration of the TM fields into the metal.…”