title: Single tunable laser interrogation of slab-coupled optical sensors through resonance tuning.
abstract: This paper describes a method for tuning the resonant wavelengths of slab-coupled optical fiber sensors (SCOSs). This method allows multiple sensors to be interrogated simultaneously with a single tunable laser. The resonances are tuned by rotating a biaxial slab waveguide relative to an optical D-fiber. As the slab waveguide rotates, its effective index of refraction changes causing the coupling wavelengths of the slab waveguide and D-fiber to shift. A SCOS fabricated with potassium titanyl phosphate crystal as the slab waveguide is shown to have resonance tuning ranges of 6.67 and 22.24 nm, respectively, for TM and TE polarized modes.
authors.affiliation: Department of Electrical and Computer Engineering, Brigham Young University, Provo, Utah 84602, USA. schadde1@byu.edu
authors.forename: Spencer
authors.initials: S
authors.lastname: Chadderdon
authors.forename: Leeland
authors.initials: L
authors.lastname: Woodard
authors.forename: Daniel
authors.initials: D
authors.lastname: Perry
authors.forename: Richard H
authors.initials: RH
authors.lastname: Selfridge
authors.forename: Stephen M
authors.initials: SM
authors.lastname: Schultz