Wide Range FBG Displacement Sensor Based on Twin-Core Fiber Filter

Author

Zou, Yi ; Dong, Xiaopeng ; Lin, Ganbin ; Adhami, Reza

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Alabama in Huntsville, Huntsville, AL, USA

Volume

30

Issue

3

fYear

2012

Firstpage

337

Lastpage

343

Abstract

In this paper, we present a wide range displacement sensor system using the fiber Bragg grating (FBG), spring, and a twin-core fiber. The quantitative analysis of the theory of the cascaded FBG-spring system for displacement measurement is introduced together with the basic working principle of a twin-core fiber filter. The feasibility of the method is demonstrated in experiments which shows the output optical intensity linear relation with the displacement. The characteristics of the wide range, high resolution, low cost, and compact scheme would make this method more applicable.

Keywords

displacement measurement; fibre optic sensors; optical filters; compact scheme; displacement measurement; fiber Bragg grating; high resolution; low cost; output optical intensity linear relation; spring; twin-core fiber filter; wide range FBG displacement sensor; Fiber gratings; Optical fiber couplers; Optical fiber filters; Optical fiber sensors; Displacement sensor; edge filter; fiber Bragg grating (FBG); fiber filter; twin-core fiber;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2011.2181334

Filename

6112165