Investigations on cladded U-shaped fiber optic sensors for refractive index measurements

Ratan Kumar Chaudhary; Hariharan Manoharan; Krishna Kumari Swain; Narayanan Madaboosi; V. V. R. Sai

doi:10.1117/12.2679729

23 May 2023 Investigations on cladded U-shaped fiber optic sensors for refractive index measurements

Ratan Kumar Chaudhary, Hariharan Manoharan, Krishna Kumari Swain, Narayanan Madaboosi, V. V. R. Sai

Proceedings Volume 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023); 126431J (2023) https://doi.org/10.1117/12.2679729
Event: European Workshop on Optical Fibre Sensors (EWOFS 2023), 2023, Mons, Belgium

Abstract

This study investigates the use of U-shaped cladded plastic optical fiber (POF) and glass optical fiber (GOF) probes for refractive index (RI) sensing as they allow a simple one-step fabrication process. The RI sensitivity of the U-shaped cladded POF probes were evaluated in narrow (1.333 to 1.348, increment of 0.003 RI) and intermediate RI ranges (1.34 to 1.39, increment of 0.01 RI). No considerable improvement or drop was observed. However, the U-shaped silica cladded GOF showed 1.3 and 1.54 -fold improvement in the RI sensitivity in comparison to the decladded probes in the narrow and intermediate RI range respectively. The highest sensitivities for cladded POF and GOF probes in the intermediate RI range were 4.7 and 10.8 ΔA_{530 nm}/ΔRIU respectively.

Citation Download Citation

Ratan Kumar Chaudhary, Hariharan Manoharan, Krishna Kumari Swain, Narayanan Madaboosi, and V. V. R. Sai "Investigations on cladded U-shaped fiber optic sensors for refractive index measurements", Proc. SPIE 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023), 126431J (23 May 2023); https://doi.org/10.1117/12.2679729

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