Fiber Cavity Ring-Down Refractive Index Sensor

Author

Ni, N. ; Chan, C.C. ; Xia, L. ; Shum, P.

Author_Institution

Sch. of Chem. & Biomed. Eng., Nanyang Technol. Univ., Singapore

Volume

20

Issue

16

fYear

2008

Firstpage

1351

Lastpage

1353

Abstract

An exploratory study on a novel fiber long-period grating (LPG) cavity ring-down refractive index sensor is conducted. By detecting the ring-down curves at different ambient refractive index levels, the performances of the LPG sensor are investigated. The experimental results demonstrate by using this sensing setup the change of the refractive index in 1.35-1.43 region could be effectively detected.

Keywords

diffraction gratings; erbium; fibre optic sensors; laser cavity resonators; measurement by laser beam; optical fibre amplifiers; optical fibre couplers; refractive index measurement; EDFA; JkJk:Er; cavity ring-down sensor; erbium doped fiber amplifier; fiber long-period grating sensor; optical fiber couplers; refractive index measurement; refractive index sensor; ring-down curves; Biomedical measurements; Chemical technology; Fiber gratings; Optical attenuators; Optical fiber couplers; Optical fiber losses; Optical fiber sensors; Propagation losses; Refractive index; Resonance; Cavity ring-down (CRD); long-period grating (LPG); refractive index sensor;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2008.926866

Filename

4579325