Temperature Robust Refractive Index Sensor Based on a Photonic Crystal Fiber Interferometer

Author

Park, Kwan Seob ; Choi, Hae Young ; Park, Seong Jun ; Paek, Un-Chul ; Lee, Byeong Ha

Author_Institution

Dept. of Inf. & Commun., Gwangju Inst. of Sci. & Technol., Gwangju, South Korea

Volume

10

Issue

6

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

1147

Lastpage

1148

Abstract

We present a simple photonic crystal fiber (PCF)-based reflection type interferometer insensitive to temperature for refractive-index measurement. By simply collapsing the airholes at a middle point and forming a reflector at the end of a PCF, the interferometer could be implemented. The PCF sensor showed a low thermal sensitivity even without any compensation process. The feasibility as a refractive-index sensor is demonstrated by presenting the spectral response to liquids having various refractive indexes and to temperature. The implemented sensor showed a good sensitivity of 850 nm/RUI (refractive unit index).

Keywords

fibre optic sensors; holey fibres; light interferometers; photonic crystals; refractive index measurement; photonic crystal fiber interferometer; refractive index measurement; temperature robust refractive index sensor; Liquids; Optical refraction; Optoelectronic and photonic sensors; Photonic crystal fibers; Reflection; Refractive index; Robustness; Temperature measurement; Temperature sensors; Thermal sensors; External refractive index (ERI); low-temperature cross sensitivity; photonic crystal fiber (PCF);

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2009.2037510

Filename

5443786