Please use this identifier to cite or link to this item: http://repositorio.inesctec.pt/handle/123456789/6593
Title: High resolution temperature independent refractive index measurement using differential white light interferometry
Authors: Carlos Jesus Gouveia
Zibaii,M
Latifi,H
Manuel Joaquim Marques
José Manuel Baptista
Pedro Jorge
Issue Date: 2013
Abstract: In this work a fiber optic interferometric system for differential refractive index measurement is described. The system is based on a white light Mach-Zehnder configuration, with serrodyne phase modulation, used to interrogate two similar non-adiabatic tapered optical fiber sensors in a differential scheme. In this situation the system is able to measure the refractive index independent of temperature. Signal processing with low cost digital instrumentation developed in Labview environment allows a detectable change in refractive index of Delta n approximate to 1.46 x 10(-6), which is, from the best of our knowledge the highest resolution achieved using a bare fiber taper device for a range of refractive index close to the water index. The results demonstrate the potential of the proposed scheme to operate as a self-referenced chemical and biological sensing platform.
URI: http://repositorio.inesctec.pt/handle/123456789/6593
http://dx.doi.org/10.1016/j.snb.2013.08.033
metadata.dc.type: article
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