Low-cost optical fiber refractive-index sensor based on core diameter mismatch

Author

Villatoro, Joel ; Hernandez, David Monzon

Author_Institution

Centro de Investigaciones en Opt. A.C., Leon

Volume

24

Issue

3

fYear

2006

fDate

3/1/2006 12:00:00 AM

Firstpage

1409

Lastpage

1413

Abstract

A simple, compact, and low-cost optical fiber refractive-index (RI) sensor is reported. It consists of a multimode fiber in which a short section of standard single-mode fiber (SMF) is inserted. Owing to the core diameter mismatch, the cladding of the SMF guides light. This makes the device sensitive to the external RI. The maximum resolution of the sensor is about 7times10^-5. The fabrication of the sensor only requires cleaving and fusion splicing; moreover, the device can operate at different wavelengths, which makes it attractive for diverse applications

Keywords

fibre optic sensors; optical fibre cladding; optical fibre fabrication; refractive index measurement; splicing; core diameter mismatch; fiber cladding; fusion splicing; low-cost sensor; multimode fiber; optical fiber sensor; refractive-index sensor; sensor fabrication; sensor resolution; short section fiber; single-mode fiber; Biosensors; Bragg gratings; Chemical and biological sensors; Fiber gratings; Optical fiber devices; Optical fiber sensors; Optical fibers; Optical refraction; Optical sensors; Sensor fusion; Core diameter mismatch; optical fiber sensors; refractive-index measurement; temperature sensor;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2005.863246

Filename

1605344