title: Peak-type and dip-type metal-clad waveguide sensing.
abstract: Two types of operation for metal-clad waveguide sensors, peak-type and dip-type operation, are described. The newly discovered peak-type operation [Sens. Actuators B 94, 304 (2003)] can be achieved by use of a few-nanometers-thick cladding of a metal with a large imaginary permittivity, whereas conventional dip-type operation is obtained with a metal cladding with small imaginary permittivity some tens of nanometers thick. Both types of operation are described, and the main differences are illustrated.
authors.affiliation: Optics and Plasma Research Department, Risø National Laboratory, DK-4000 Roskilde, Denmark. nina.skivesen@risoe.dk
authors.forename: N
authors.initials: N
authors.lastname: Skivesen
authors.forename: R
authors.initials: R
authors.lastname: Horvath
authors.forename: H C
authors.initials: HC
authors.lastname: Pedersen