Two-photon 3D printed active polymer ring resonators on the tip of optical fibers for temperature sensing

Akhilesh Kumar Pathak; Sachin Kulkarni; Sridhar Krishnaswamy

doi:10.1117/12.3010972

9 May 2024 Two-photon 3D printed active polymer ring resonators on the tip of optical fibers for temperature sensing

Akhilesh Kumar Pathak, Sachin Kulkarni, Sridhar Krishnaswamy

Proceedings Volume 12951, Health Monitoring of Structural and Biological Systems XVIII; 1295121 (2024) https://doi.org/10.1117/12.3010972
Event: SPIE Smart Structures + Nondestructive Evaluation, 2024, Long Beach, California, United States

Abstract

We demonstrate a novel optically active ring resonator that is 3D printed on the tip of a single-mode optical fiber. The ring resonator is printed using two-photon polymerization of a resin that has been doped with core-shell NaYF₄: Yb³⁺, Er³⁺ nanoparticles. The integration of these optically active nanoparticles into the resonator allows the exploitation of their upconversion luminescence properties, making it sensitive to temperature and strain variations. The sensing performance of the device is based on the change in the luminescence intensity corresponding to the variation in surrounding temperature. As the ambient conditions change, variations in the refractive index and geometry affect the change in the intensity of the ring resonator which can be remotely demodulated from the light emissions collected by the optical fiber itself.

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 "Two-photon 3D printed active polymer ring resonators on the tip of optical fibers for temperature sensing", Proc. SPIE 12951, Health Monitoring of Structural and Biological Systems XVIII, 1295121 (9 May 2024); https://doi.org/10.1117/12.3010972

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