Fiber-optic temperature sensor based on embedded rare-earth luminescent nanoparticles

Akhilesh Kumar Pathak; Sachin Kulkarni; Sridhar Krishnaswamy

doi:10.1117/12.3010975

9 May 2024 Fiber-optic temperature sensor based on embedded rare-earth luminescent nanoparticles

Akhilesh Kumar Pathak, Sachin Kulkarni, Sridhar Krishnaswamy

Proceedings Volume 12951, Health Monitoring of Structural and Biological Systems XVIII; 1295122 (2024) https://doi.org/10.1117/12.3010975
Event: SPIE Smart Structures + Nondestructive Evaluation, 2024, Long Beach, California, United States

Abstract

In this work, we report the fabrication and characterization of a fiber-optic temperature sensor based on embedding rare-earth nanoparticle emitters (NaYF4: Yb³⁺, Er³⁺) inside an optical fiber. A micro channel passing through the core of Single Mode Fiber (SMF) is fabricated using a femtosecond laser, and the microcavity is subsequently filled with optically active medium. In this work, the NaYF4: Yb³⁺, Er³⁺ works as an active medium with temperature-sensitive upconversion luminescence properties to provide temperature measurements allowing for real-time temperature monitoring. The obtained results show promise for addressing temperature-related challenges in various fields, reaffirming the crucial role of optical sensors for a wide range of applications including industrial, medical, and environmental monitoring.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Akhilesh Kumar Pathak, Sachin Kulkarni, and Sridhar Krishnaswamy "Fiber-optic temperature sensor based on embedded rare-earth luminescent nanoparticles", Proc. SPIE 12951, Health Monitoring of Structural and Biological Systems XVIII, 1295122 (9 May 2024); https://doi.org/10.1117/12.3010975

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