Inline Microfiber Mach–Zehnder Interferometer for High Temperature Sensing

Author

Jasim, Ali A. ; Harun, Sulaiman Wadi ; Arof, Hamzah ; Ahmad, Harith

Author_Institution

Dept. of Electr. Eng., Univ. of Malaya, Kuala Lumpur, Malaysia

Volume

13

Issue

2

fYear

2013

fDate

Feb. 2013

Firstpage

626

Lastpage

628

Abstract

A compact inline microfiber Mach-Zehnder interferometer (MMZI) is proposed for high temperature sensing. The MMZI is fabricated using a flame-brushing technique in which both transition parts of a microfiber are tapered to reduce the waist diameter and form an interference region. Since the refractive index of the fiber core exhibits a different temperature coefficient from that of air, the interferometer is sensitive to temperature variation. The temperature sensitivity of the device with a length of 40 mm was measured to be 13.4 pm/^°C with an excellent linearity for temperature measurement up to 800^°C.

Keywords

Mach-Zehnder interferometers; fibre optic sensors; flames; microfabrication; microsensors; refractive index; temperature measurement; temperature sensors; MMZI; fiber core; flame brushing technique; high temperature sensor; inline microfiber Mach-Zehnder interferometer; interference suppression; microfabrication; refractive index; size 40 mm; temperature coefficient; temperature measurement; temperature sensitivity measurement; Educational institutions; Interference; Optical fiber sensors; Refractive index; Temperature measurement; Temperature sensors; Flame-brushing technique; high-temperature sensor; inline Mach–Zehnder interferometer (MZI); microfiber;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2012.2224106

Filename

6329388