title: Polymeric slot waveguide interferometer for sensor applications.
abstract: A refractive index sensor based on slot waveguide Young interferometer was developed in this work. The interferometer was fabricated on a polymer platform and operates at a visible wavelength of 633 nm. The phase shift of the interference pattern was measured with various concentrations of glucose-water solutions, utilizing both TE and TM polarization states. The sensor was experimentally observed to detect a refractive index difference of 6.4 × 10(-6) RIU. Furthermore, the slot Young interferometer was found to compensate for temperature variations. The results of this work demonstrate that high performance sensing capability can be obtained with a polymeric slot Young interferometer, which can be fabricated by a simple molding process.
authors.forename: Marianne
authors.initials: M
authors.lastname: Hiltunen
authors.forename: Jussi
authors.initials: J
authors.lastname: Hiltunen
authors.forename: Petri
authors.initials: P
authors.lastname: Stenberg
authors.forename: Sanna
authors.initials: S
authors.lastname: Aikio
authors.forename: Lauri
authors.initials: L
authors.lastname: Kurki
authors.forename: Pasi
authors.initials: P
authors.lastname: Vahimaa
authors.forename: Pentti
authors.initials: P
authors.lastname: Karioja