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Time-moduated nonreciprocal metasurface absorber for surface waves
- Source :
- Optics Letters. 45:1212
- Publication Year :
- 2020
- Publisher :
- Optica Publishing Group, 2020.
-
Abstract
- We have investigated a magnet-free, nonreciprocal surface wave absorber based on high impedance surfaces (HISs) using a spatial-temporal modulation approach. By controlling embedded switches with a travelling wave, the HIS metasurface is modulated to break the time and spatial symmetry, which enables surface waves to propagate in one direction but be absorbed when propagating in the reverse direction. The nonreciprocity has been demonstrated by an EM-circuit co-simulation. We envision that this could be possibly applied in future communication systems that preferably transmit unidirectionally but absorb interference from the reverse direction caused by reflections or other devices.
- Subjects :
- Physics
Hiss
Wave propagation
business.industry
02 engineering and technology
021001 nanoscience & nanotechnology
Interference (wave propagation)
01 natural sciences
Atomic and Molecular Physics, and Optics
010309 optics
High impedance
Optics
Modulation
Surface wave
0103 physical sciences
Phase velocity
0210 nano-technology
business
Phase conjugation
Subjects
Details
- ISSN :
- 15394794 and 01469592
- Volume :
- 45
- Database :
- OpenAIRE
- Journal :
- Optics Letters
- Accession number :
- edsair.doi.dedup.....85099aafcba56e3536489b9aa209c4d0