Work

A novel fiber optic temperature sensor based on CCT measurement and tipped with a PDMS-YAG:Ce phosphor mixture

Year: 2025

Type: article

Abstract: This paper presents a novel fiber-optic temperature sensor based on correlated color temperature (CCT) measurement. The sensor is formed by a homogeneous mixture of polydimethylsiloxane (PDMS) and cerium-doped yttrium aluminum garnet (YAG:Ce) phosphor, applied as a tip on the faces of an optical fiber pair. While YAG:Ce phosphors are commonly used in lighting and white light-emitting diode (WLED) technologies, their use in thermoluminescence and temperature sensing has been only minimally explored. We demonstrate that the temperature of a homogeneous PDMS-YAG:Ce mixture can be directly related to its CCT, and a highly linear dependence on temperature was identified across the studied range. The findings confirm that this CCT-based approach enables both contact and non-contact temperature measurement. The proposed optical sensors operate effectively from -60°C to 220°C (213-493 K), and their resistance to electromagnetic radiation was within a magnetic field range of -2 T to 2 T.

Source: iScience

DOI: 10.1016/j.isci.2025.114356

Authors: Jan Jargus, Ondřej Životský, Daniel Križan, Michal Gryga, Carlos Marques, Jan Nedoma

Institutions: VSB - Technical University of Ostrava, University of Aveiro

Language: English

Topic: Luminescence Properties of Advanced Materials

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,240

Funders: European Commission, Ministerstvo Školství, Mládeže a Tělovýchovy, Fundação para a Ciência e a Tecnologia