waveguide

aaltoputki, aaltojohto A structure which guides waves, such as electromagnetic waves, light, or sound waves.
To act as a Noun waveguide for
{{quote-journal|date=January 8, 2009|author=Y. Chassagneux, R. Colombelli, W. Maineult, S. Barbieri, H. E. Beere, D. A. Ritchie, S. P. Khanna, E. H. Linfield, A. G. Davies|title=Electrically pumped photonic-crystal terahertz lasers controlled by boundary conditions|work=Nature|url=|doi=doi:10.1038/nature07636|volume=457|issue=7226|pages=