Temperature Sensing Using Colloidal-Core Photonic Crystal Fiber

Author

Bozolan, Alexandre ; Gerosa, Rodrigo M. ; De Matos, Christiano J S ; Romero, Murilo A.

Author_Institution

Escola de Eng. de Sao Carlos, Univ. de Sao Paulo, Sao Carlos, Brazil

Volume

12

Issue

1

fYear

2012

Firstpage

195

Lastpage

200

Abstract

We report on a temperature sensor based on the monitoring of the luminescence spectrum of CdSe/ZnS nanocrystals, dispersed in mineral oil and inserted into the core of a photonic crystal fiber. The high overlap between the pump light and the nanocrystals as well as the luminescence guiding provided by the fiber geometry resulted in relatively high luminescence powers and improved optical signal-to-noise ratio (OSNR). Also, both core end interfaces were sealed so as to generate a more stable and robust waveguide structure. Temperature sensitivity experiments indicated a 70 pm/°C spectral shift over the 5°C to 90°C range.

Keywords

TEM cells; fibre optic sensors; holey fibres; photonic crystals; temperature sensors; colloidal core photonic crystal fiber; core end interfaces; fiber geometry; high luminescence powers; luminescence spectrum; nanocrystals; optical signal to noise ratio; pump light; robust waveguide structure; spectral shift; temperature sensitivity; temperature sensor; Luminescence; Optical fiber sensors; Optical fibers; Quantum dots; Temperature measurement; Temperature sensors; Colloidal quantum dots (QDs); luminescence; optical fiber sensors; photonic crystal fiber; semiconductor nanostructures;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2011.2146771

Filename

5755164