Photonic crystals for fluid sensing in the subterahertz range

Abstract

The authors present experimental results on photonic crystals in the subterahertz range for fluid-sensing applications. Using a standard machining process, a two-dimensional photonic crystal consisting of a triangular array of air holes in the dielectric medium was produced. The insertion of fluids with different refractive indices into the active region affects the transmission profile in the stop band. The experiment agrees well with theoretical calculations. (c) 2006 American Institute of Physics.