title: Design of miniaturized silicon wire and slot waveguide polarization splitterbased on a resonant tunneling.
abstract: We propose an ultra-small polarization splitter based on a resonant tunneling phenomenon. This polarization splitter consists of two identical horizontally oblong silicon wire waveguides separated by a vertical slot waveguide. The structural parameters of the central resonant slot waveguide are designed to couple only the TM-like mode between the left and right side silicon wire waveguides. Results from numerical simulation with the full-vectorial beam propagation method show that a 16-mum-long polarization splitter with extinction ratio better than -20 dB on the entire C-band is achieved.
authors.affiliation: Division of Media and Network Technologies, Graduate School of Information Science and Technology, Hokkaido University, Sapporo 060-0814, Japan. komatsu@icp.ist.hokudai.ac.jp
authors.forename: Masa-Aki
authors.initials: MA
authors.lastname: Komatsu
authors.forename: Kunimasa
authors.initials: K
authors.lastname: Saitoh
authors.forename: Masanori
authors.initials: M
authors.lastname: Koshiba