title: Ultracompact high-efficiency polarising beam splitter based on silicon nanobrick arrays.
abstract: Since the transmission of anisotropic nano-structures is sensitive to the polarisation of an incident beam, a novel polarising beam splitter (PBS) based on silicon nanobrick arrays is proposed. With careful design of such structures, an incident beam with polarisation direction aligned with the long axis of the nanobrick is almost totally reflected (~98.5%), whilst that along the short axis is nearly totally transmitted (~94.3%). More importantly, by simply changing the width of the nanobrick we can shift the peak response wavelength from 1460 nm to 1625 nm, covering S, C and L bands of the fiber telecommunications windows. The silicon nanobrick-based PBS can find applications in many fields which require ultracompactness, high efficiency, and compatibility with semiconductor industry technologies.
authors.forename: Guoxing
authors.initials: G
authors.lastname: Zheng
authors.forename: Guogen
authors.initials: G
authors.lastname: Liu
authors.forename: Mitchell Guy
authors.initials: MG
authors.lastname: Kenney
authors.forename: Zile
authors.initials: Z
authors.lastname: Li
authors.forename: Ping'an
authors.initials: P
authors.lastname: He
authors.forename: Song
authors.initials: S
authors.lastname: Li
authors.forename: Zhi
authors.initials: Z
authors.lastname: Ren
authors.forename: Qiling
authors.initials: Q
authors.lastname: Deng