Abstract
We show that in order to guide waves, it is sufficient to periodically truncate their edges. The modes supported by this type of wave guide propagate freely between the slits, and the propagation pattern repeats itself. We experimentally demonstrate this general wave phenomenon for two types of waves: (i) plasmonic waves propagating on a metal-air interface that are periodically blocked by nanometric metallic walls, and (ii) surface gravity water waves whose evolution is recorded, the packet is truncated, and generated again to show repeated patterns. This guiding concept is applicable for a wide variety of waves.
- Received 27 January 2021
- Accepted 1 June 2021
DOI:https://doi.org/10.1103/PhysRevLett.127.014303
© 2021 American Physical Society
Physics Subject Headings (PhySH)
Focus
Guiding Waves by Snipping Their Edges
Published 2 July 2021
A new waveguide design uses a series of apertures, or slits, to keep waves confined to a narrow path.
See more in Physics