Ultracompact Optical Fiber Sensor for Refractive Index and High-Temperature Measurement

Author

Liao, C.R. ; Chen, H.F. ; Wang, D.N.

Author_Institution

Coll. of Opt. & Electron. Technol., China Jiliang Univ., Hangzhou, China

Volume

32

Issue

14

fYear

2014

fDate

July15, 7 2014

Firstpage

2531

Lastpage

2535

Abstract

An ultracompact microfiber sensor head is demonstrated for refractive index and high temperature sensing. Such a device is a fiber in-line Mach-Zehnder interferometer formed by creating an inner air-cavity along a section of microfiber and exhibits a high refractive index sensitivity of ~4202 nm/refractive index unit and a good temperature sensitivity of 41 pm/°C, with excellent high-temperature sustainability up to 1100 °C.

Keywords

Mach-Zehnder interferometers; fibre optic sensors; micro-optics; microsensors; refractive index measurement; temperature measurement; temperature sensors; air-cavity; fiber in-line Mach-Zehnder interferometer; high-temperature measurement; high-temperature sensing; refractive index measurement; refractive index sensing; ultracompact microfiber sensor; ultracompact optical fiber sensor; Educational institutions; Fiber lasers; Optical fiber sensors; Optical fibers; Sensitivity; Temperature sensors; Femtosecond (fs) laser ablation; optical fiber interferometer; optical fiber sensors;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2014.2328356

Filename

6827204