title: Analysis of an ultra-compact wavelength filter based on hybrid plasmonic waveguide             structure.
abstract: In this letter, we propose and analyze an ultra-compact wavelength filter on             silicon-based hybrid plasmonic waveguides, which confines light in a nanometeric silica             dioxide layer between the silicon substrate and metal cap. The filter consists of a stub             structure coupled to a straight waveguide. The three-dimensional finite-difference             time-domain (FDTD) method is applied to calculate the spectral responses of such             devices. Similar resonant behaviors are obtained since those devices are based on             two-dimensional Metal-Insulator-Metal waveguide structure. Results also show that by             adding stubs and tuning the distance between stubs can further improve the device's             performance and shape the spectral response to some extent.
authors.affiliation: Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, China. zhuning@scnu.edu.cn
authors.forename: N
authors.initials: N
authors.lastname: Zhu
authors.forename: T
authors.initials: T
authors.lastname: Mei