title: Tapered fiber optic surface plasmon resonance sensor for analyses of vapor and liquid phases.
abstract: We report a new approach to analyze both vapor and liquid phases by utilizing a tapered fiber optic surface plasmon resonance (SPR) probe. This technique employs a fiber optic SPR probe with a modified geometry to tune the SPR coupling wavelength-angle pair. The observed composite spectrum included two distinct SPR dips associated with surface plasmons excited in the gas and liquid active regions. This sensor is able to detect refractive index changes in both vapor and liquid phases individually by simultaneous monitoring SPR coupling wavelengths from the two sensing surfaces.
authors.affiliation: Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, USA. Yoon-Chang.Kim@asu.edu
authors.forename: Yoon-Chang
authors.initials: YC
authors.lastname: Kim
authors.forename: Wei
authors.initials: W
authors.lastname: Peng
authors.forename: Soame
authors.initials: S
authors.lastname: Banerji
authors.forename: Karl S
authors.initials: KS
authors.lastname: Booksh