Nano-thick SiO2 channel for subwavelength plasmonic orbital angular momentum mode transmission
Year: 2024
Type: article
Abstract: Orbital angular momentum (OAM) waveguides are critical for multi-channel photonic-on-chip applications.However, current large-mode-area waveguides pose a challenge for OAM device miniaturization.Here, a novel hybrid plasmonic waveguide is theoretically proposed to decrease the OAM mode area by two orders of magnitude.Benefiting from the Ag-As 2 S 3 -SiO 2 -As 2 S 3 -Ag five-layer cylindrical structure, the guided OAM mode realizes a larger figure of merit of 88.Based on this waveguide, an OAM coupler with a record-breaking small footprint (0.68 μm × 5.7 μm) is designed.The proposed waveguide enables subwavelength OAM light transmission, which provides a key building block for high-density OAM photonics circuits.
Source: Chinese Optics Letters
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
Awards: G3366390069, G382131018, G4372306404, G85812437
OpenAlex ID: W4405954917