Polarization-independent hybrid plasmonic coupler based on T-shaped slot waveguide
Source abstract
Abstract
In this paper, a novel polarization-independent hybrid plasmonic coupler based on a T-shaped slot waveguide is proposed and investigated by numerical simulations using the finite element method. The structure supports both the TE-polarized slot waveguide mode and the TM-polarized plasmonic mode, offering a greater possibility to achieve the polarization-independent operation. The simulation results show that with proper structural parameters, the waveguide coupler with high extinction ratios of 31.2 dB (TE) and 30 dB (TM) and low insertion losses of 0.38 dB (TE) and 2.04 dB (TM) can be achieved at a telecommunication wavelength of 1550 nm. An investigation of the influence of structural perturbations indicates that the proposed coupler also has a good tolerance to fabrication errors. The proposed structure has potential applications in the field of subwavelength integrated photonic circuits.
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Research context
OpenAlex topics: Plasmonic and Surface Plasmon Research · Photonic and Optical Devices · Optical Network Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology 1 , Nanjing 210044, China
Department of Information and Communication Engineering, Fukuoka Institute of Technology 2 , Fukuoka 811-0295, Japan
Funding
The Startup Foundation for Introducing Talent of NUIST · National Natural Science Foundation of China
References (21)
Show source-provided references
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