Corrugated metal surface with pillars for terahertz surface plasmon polariton waveguide components
Type
Conference PaperAuthors
Yuehong, XuYanfeng, Li
Tian, Chunxiu
Han, Jiaguang
Quan, Xu
Xueqian, Zhang
Xixiang, Zhang
Ying, Zhang
Weili, Zhang
KAUST Department
Physical Science and Engineering (PSE) DivisionDate
2018-01-12Permanent link to this record
http://hdl.handle.net/10754/627168
Metadata
Show full item recordAbstract
In the terahertz regime, due to perfect conductivity of most metals, it is hard to realize a strong confinement of Surface plasmon polaritons (SPPs) although a propagation loss could be sufficiently low. We experimentally demonstrated a structure with periodic pillars arranged on a thin metal surface that supports bound modes of spoof SPPs at terahertz (THz) frequencies. By using scanning near-field THz microscopy, the electric field distribution above the metal surface within a distance of 130 μm was mapped. The results proved that this structure could guide spoof SPPs propagating along subwavelength waveguides, and at the same time reduce field expansion into free space. Further, for the development of integrated optical circuits, several components including straight waveguide, S-bend, Y-splitter and directional couplers were designed and characterized by the same method. We believe that the waveguide components proposed here will pave a new way for the development of flexible, wideband and compact photonic circuits operating at THz frequencies.Citation
Yuehong X, Yanfeng L, Chunxiu T, Jiaguang H, Quan X, et al. (2018) Corrugated metal surface with pillars for terahertz surface plasmon polariton waveguide components. 2017 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications. Available: http://dx.doi.org/10.1117/12.2295257.Publisher
SPIE-Intl Soc Optical EngConference/Event name
2017 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Their Applicationsae974a485f413a2113503eed53cd6c53
10.1117/12.2295257