title: Fiber-optic surface-plasmon resonance for the determination of thickness and optical constants of thin metal films.
abstract: We demonstrate that the thickness and the dielectric constants of thin gold films deposited on the surface of a fiber core can be quantitatively determined as a single set of solutions by the simple measurement of the fiber-optic surface-plasmon resonance responses. This method is capable of directly characterizing metal films with curved surfaces: this is very hard to perform by use of the conventional optical techniques of reflectometry and ellipsometry. The theoretical errors for the experimental fiber are estimated to be within d +/- 2%, epsilon(r) +/- 1%, and epsilon(i) +/- 15%.
authors: Laboratory of Engineering and Functionalization of Surfaces (IFOS), Ecole Centrale de Lyon, 36 Avenue Guy de Collongue, B.P. 163, 69131 Ecully Cedex, France.
authors: W B
authors: WB
authors: Lin
authors: J M
authors: JM
authors: Chovelon
authors: N
authors: N
authors: Jaffrezic-Renault