4.5 Article

Miniaturized plasmonic magneto-optic mach-zehnder isolator using graphene and optical gain medium

Journal

OPTIK
Volume 228, Issue -, Pages -

Publisher

ELSEVIER GMBH
DOI: 10.1016/j.ijleo.2020.166200

Keywords

Mach-zehnder; Isolator; Plasmonics; Graphene; Optical gain medium; Waveguide

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In this paper, a new configuration of multi-layer surface plasmon polariton (SPP) slab waveguide using graphene, magneto-optic, and optical gain medium has been proposed and analyzed at the wavelength of 1550 nm. The results demonstrate that the five-layer waveguide increases propagation length and decreases loss, leading to the proposal of a magneto-optic plasmonic isolator with good isolation and low loss. This structure shows promise for applications in photonic integrated circuits.
In this paper, a new configuration of multi-layer surface plasmon polariton (SPP) slab waveguide with graphene and mid-layers of magneto-optic (MO) has been proposed and analyzed at the wavelength of 1550 nm. The results show that the five-layer waveguide of graphene-magnetooptic-graphene (GMOG) increases propagation length and decreases loss. As a result, the magneto-optic plasmonic isolator has been proposed using GMOG waveguide with 12dB isolation and 3.5 dB loss in the forward direction. The length of the structure is 34 mu m that can be applied in photonic integrated circuits (PICs). In final proposed configuration, an optical gain medium has been used for improvement of propagation length.

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