P16 - Comparative study of 10-mm length commercial erbium doped optical fibers for temperature sensing with a fluorescence decay method

Event

23. ITG/GMA-Fachtagung Sensoren und Messsysteme 2026
2026-06-09 - 2026-06-10
Nürnberg

Band

Poster

Chapter

Poster

Author(s)

R. Kruglov, K. Rostan, R. Engelbrecht - Technische Hochschule Nürnberg Georg Simon Ohm, Nürnberg

Pages

568 - 571

DOI

10.5162/sensoren2026/P16

ISBN

978-3-910600-11-9

Price

free

Abstract

This paper shows the experimental results on the temperature sensitivity of the fluorescence decay time in commercial rare-earth-doped silica fibers within the ambient temperature range from 0°C to 60°C by pumping with a laser diode at 976 nm. The average temperature sensitivity of the 10-mm fiber length sensors defined as a slope of a linear regression over the measured temperature range has achieved 2.51 μs/°C and 1.54 μs/°C for Er₃+-doped fibers with low and high ions concentration respectively. The average sensitivity of 1.99 μs/°C has been achieved with Yb₃+/Er₃+-codoped fiber. A short-term precision calculated as an overall standard deviation of the measured fluorescence decay time within the ambient temperature range was 0.88 μs and 0.64 μs for Er₃+-doped fibers with low and high ions concentration; and 4.04 μs for Yb₃+/Er₃+-codoped fiber respectively.