journal article·2026-04-10Open access

An efficient orthogonal coupler for silicon photonics with the degenerate plasmonic modes

Sheng Hsiung Chang

Nanotechnology· Volume 37· Issue 14

Abstract

Abstract An orthogonal coupling structure is proposed to collect the near-infrared lightwaves into a SiO 2 /Si/SiO 2 slab waveguide, which is mainly based on the generation of degenerate plasmonic longitudinal modes in an Ag/SiO 2 /Ag V groove. The coupling efficiency of the proposed plasmonic coupler is higher than 50% in the wavelength range from 1300 nm to 1748 nm. Besides, the highest coupling efficiency (lowest coupling loss) is 87.2% (0.60 dB) at λ 0 = 1531 nm. The proposed plasmonic structure on top of the silicon-on-insulator substrate can facilitate the development of co-packaged optics.
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Research context

OpenAlex topics: Photonic and Optical Devices · Plasmonic and Surface Plasmon Research · Advanced Fiber Laser Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

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