Refractometric sensor based on a phase-shifted long-period fiber grating

A refractometric sensor based on a phase-shifted long-period fiber grating written by electric-arc discharges is presented. Transmission and reflective configurations for refractive index measurements are studied. It is observed that the reflective topology permits better performance compared with t...

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Bibliographic Details
Published inApplied optics (2004) Vol. 45; no. 21; p. 5066
Main Authors Falate, Rosane, Frazão, Orlando, Rego, Gaspar, Fabris, José Luís, Santos, José Luís
Format Journal Article
LanguageEnglish
Published United States 20.07.2006
Subjects
Equipment Design
Equipment Failure Analysis
Fiber Optic Technology - instrumentation
Refractometry - instrumentation
Refractometry - methods
Reproducibility of Results
Sensitivity and Specificity
Transducers
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Summary:A refractometric sensor based on a phase-shifted long-period fiber grating written by electric-arc discharges is presented. Transmission and reflective configurations for refractive index measurements are studied. It is observed that the reflective topology permits better performance compared with the transmission one, which is the approach normally utilized in the context of long-period fiber sensing. The resolution achieved in the measurement of refractive index enables the application of this sensing head structure in demanding situations, such as the measurement of the level of salinity of water.
ISSN:1559-128X
DOI:10.1364/ao.45.005066