Refractometric sensor based on a phase-shifted long-period fiber grating
- 20 July 2006
- journal article
- research article
- Published by Optica Publishing Group in Applied Optics
- Vol. 45 (21) , 5066-5072
Abstract
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.Keywords
This publication has 19 references indexed in Scilit:
- Optical fibre long-period grating sensors: characteristics and applicationMeasurement Science and Technology, 2003
- High-temperature stability of long-period fiber gratings produced using an electric arcJournal of Lightwave Technology, 2001
- Tunable mechanically induced long-period fiber gratingsOptics Letters, 2000
- High sensitivity of dual resonant peaks of long-periodfibre grating to surrounding refractive index changesElectronics Letters, 1999
- Phase shifted and cascaded long-period fiber gratingsOptics Communications, 1999
- Long-period fibre grating fabrication with focusedCO 2 laser pulsesElectronics Letters, 1998
- Analysis of the response of long period fiber gratings to external index of refractionJournal of Lightwave Technology, 1998
- Displacements of the resonant peaks of a long-period fiber grating induced by a change of ambient refractive indexOptics Letters, 1997
- Optical fiber long-period grating sensorsOptics Letters, 1996
- Long periodic superstructure Bragg gratings in opticalfibresElectronics Letters, 1994