Three-dimensional gap plasmon power splitters suitable for photonic integrated circuits

Abstract

In this paper we have investigated the performance of a nano-optical power splitter based on gap plasmon waveguides. The structure consists of the rectangular gap plasmon waveguides in metal films. It is clear that the wave number and correspondingly light confinement and the loss in the waveguides are the most effective parameters in power splitting, but as we know coupling length is another important factor which should be considered. Some dependencies of the coupling length and the maximum transfer power on the structure parameters are studied. It has been shown that approximately 43% transfer power for each arm of the splitter is achievable. Simulation results have been obtained by the compact finitedifference time-domain method. The considered structures, because of their small coupling length and dimensions are appropriate for implementation in photonic integrated circuits.

Subwavelength Plasmonic Two‐Conductor Waveguides

“…One of the 3D plasmonic two-conductor waveguides that has been investigated is based on a deep subwavelength slot in a thin metallic film (8,12,29,30,40). The geometry of such a plasmonic slot waveguide is shown in Figure 2a.…”

Orbital Angular Momentum in Nanoplasmonic Vortices

“…A prominent application of localized surface plasmons (LSPs) is surface-enhanced Raman spectroscopy (SERS), where the plasmon-induced localization strongly enhances the electromagnetic near-field and thus enables the observation of Raman scattering from single molecules. , Recently, LSPs have also shown great promise for light-harvesting, where plasmon-induced hot carriers can drive a variety of physical and chemical processes. − Propagating surface plasmon polaritons (SPPs) have gained interest as a candidate for surface-confined broadband data transmission at subwavelength scales, which could be applied in future information technologies . Plasmonic structures have been designed for specific applications, − such as lenses, − beam splitters, or interferometers. , A substantial share of the field of metamaterials and metasurfaces resorts to surface plasmons …”

Efficient MT-Based Compact FDTD Algorithm for Longitudinally-Magnetized Ferrite-Loaded Waveguides

“…The compact FDTD method has been applied to isotropic, dispersive [5][6][7] and leaky media [8][9][10]. Ferriteloaded waveguides have been analyzed by the complex version in [11].…”