D-Shaped Plastic Optical Fiber Sensor for Testing Refractive Index

Author

Feng De-Jun ; Zhang Mao-Sen ; Guanxiu Liu ; Liu Xi-Lu ; Jia Dong-Fang

Author_Institution

Sch. of Inf. Sci. & Eng., Shandong Univ., Jinan, China

Volume

14

Issue

5

fYear

2014

fDate

May-14

Firstpage

1673

Lastpage

1676

Abstract

In this paper, a D-shaped plastic optical fiber is fabricated by means of side-polishing technique for refractive index (RI) sensing. The principle of operation is based on the exploitation of the evanescent wave interaction of the propagating light with the external environment, resulting in optical transmission attenuation. Transmission loss is measured when the RI of the external medium changes from 1.333 to 1.455, exhibiting a good linear relationship between them. By changing the depth of the D-shaped groove and the curvature radius of the optical-fiber probe, the sensor sensitivity is optimized. This D-shaped fiber sensor is relatively simple of construction and low cost, which makes it attractive for RI sensing in biochemical region.

Keywords

fibre optic sensors; optical fibre dispersion; optical fibre fabrication; polishing; refractive index measurement; D-shaped groove depth; D-shaped plastic optical fiber sensor; biochemical region; curvature radius; evanescent wave interaction; optical fiber probe; optical transmission attenuation; propagating light; refractive index sensing; sensor sensitivity; side-polishing technique; transmission loss; Optical fiber sensors; Optical fibers; Refractive index; Sensitivity; Plastic optical fiber; refractive index sensor; side-polishing technique;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2014.2301911

Filename

6717983