Cylindrical metal-coated optical fibre devices for filters and sensors
Novel fibre-optic components suitable for sensor applications and wavelength filters are reported. The devices consist of a tapered fibre whose uniform waist has been coated with a thin layer of gold. The operation principle is the resonant excitation of a surface plasma mode of the metal film.
Díez Cremades, Antonio Andrés, Miguel V. Culverhouse, D.O. Birks, T.A. 1996 Cylindrical metal-coated optical fibre devices for filters and sensors Electronics Letters 32 15 1390 1392