Abstract
In this work, a broadband efficient hybrid Photonic–Plasmonic polarization beam splitter (HPPPBS) based on metal–silica–silicon interactions is proposed and investigated numerically. This device contains two silicon (Si) nanofibers with specific examined dimensions, a silica (SiO2) waveguide and a straight chain of Au nanoshells which is encompassed by silica host. All of the mentioned fibers and waveguide are deposited on a Mg2F crystal host. It is shown that this structure is working properly at near infrared region (NIR), specifically at telecommunication wavelength (λ≈1550 nm). Furthermore, relevant optical characteristics have been examined and studied, thoroughly. The quality of polarization splitting is demonstrated for both transverse electric (TE) and magnetic (TM) modes in separate figures. Simulation results corroborate that the sensitivity and accuracy of the superstructure during polarization dividing and light propagating are noticeable in comparison to analogous devices. Finite-difference time-domain method (FDTD-M) is utilized to examine the optical properties of the presenting structure.
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