Thinned fiber Bragg gratings as high sensitivity refractive index sensor

Author

Iadicicco, A. ; Cusano, A. ; Cutolo, A. ; Bernini, R. ; Giordano, M.

Author_Institution

Optoelectronic Div.-Eng. Dept., Univ. of Sannio, Benevento, Italy

Volume

16

Issue

4

fYear

2004

fDate

4/1/2004 12:00:00 AM

Firstpage

1149

Lastpage

1151

Abstract

In this work, the numerical and experimental analysis on the use of thinned fiber Bragg gratings as refractive index sensors have been carried out. Wet chemical etching in a buffered hydrofluoric acid solution was used for sensor fabrication. Experimental characterization for an almost full etched cladding sensor is presented demonstrating good agreement with numerical results and resolutions of ≈10^-5 and ≈10^-4 for outer refractive index around 1.45 and 1.333, respectively.

Keywords

Bragg gratings; etching; fibre optic sensors; optical fibre cladding; optical fibre fabrication; refractive index measurement; buffered hydrofluoric acid solution; full etched cladding sensor; refractive index sensor; sensor fabrication; thinned fiber Bragg gratings; wet chemical etching; Bragg gratings; Chemical sensors; Fiber gratings; Optical fiber sensors; Optical fibers; Optical sensors; Optical waveguides; Refractive index; Sensor phenomena and characterization; Temperature sensors;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2004.824972

Filename

1281900