Study of Fiber Optic Elements Based on a Photoactive Polymer Composition for Sensor Applications

• Published in: Optics and spectroscopy 2019-10, Vol.127 (4), p.746-749
• Main Authors: Matrosova, A. S., Evstropiev, S. K., Mironov, L. Yu, Nikonorov, N. V., Komarov, A. V., Demidov, V. V.
• Format: Article
• Language: English
• Subjects: Ambient temperature; Composition; Europium; Fiber optics; Lasers; Luminescence; Optical Devices; Optical fibers; Optical Sensors and Transducers; Optics; Photonics; Physics; Physics and Astronomy; Sensors; Temperature; Temperature dependence; Ultraviolet radiation
• ISSN: 0030-400X; 1562-6911
• DOI: 10.1134/S0030400X19100175

The model of a fiber optic sensor device which operational principle is based on the thermal quenching of luminescence for ambient temperature measurements was experimentally studied. The construction of a multimode optical fiber with a transmission of more than 90%/m in the spectral region from 350 to 650 nm and a quartz capillary filled with a photoactive polymer composition based on epoxyacrylate and the europium complex with 2-naphthoyltrifluoroacetone and trioctylphosphinoxide was used as a sensitive sensor element. An exponentially decreasing character of the temperature dependence of the luminescence intensity was discovered for the photoactive composition incorporated into the sensor (excitation wavelength, 355 nm; luminescence wavelength, 615 nm) within a range from 20 to 100°C. A quasi-linear change in the luminescence intensity depending on the power of the launched UV radiation was determined.