Small-scale refractive index sensing based on coreless microfiber operating near the turning around point

Yang Jiang; Jixuan Wu; Hua Bai; Binbin Song; Cheng Zhang; Ye Li; Xinliang Gao; Kaixing Huang

doi:10.1117/12.2654816

15 December 2022 Small-scale refractive index sensing based on coreless microfiber operating near the turning around point

Yang Jiang, Jixuan Wu, Hua Bai, Binbin Song, Cheng Zhang, Ye Li, Xinliang Gao, Kaixing Huang

Author Affiliations +

Proceedings Volume 12478, Thirteenth International Conference on Information Optics and Photonics (CIOP 2022); 1247839 (2022) https://doi.org/10.1117/12.2654816
Event: Thirteenth International Conference on Information Optics and Photonics (CIOP 2022), 2022, Xi'an, China

Abstract

A coreless-microfiber sensor operating near the turning around point is proposed and experimentally demonstrated for small-scale refractive index (RI) sensing. Numerical simulations verify the existence of turning around point in the coreless-microfiber as the group effective RI difference between the HE11 and the HE12 modes equals zero. Experimental results show the RI sensitivity of the coreless-microfiber sensor could reach 4037.5nm/RIU around 1.333, which is consistent with the theoretical analysis results. Moreover, with the high sensing sensitivity and flexible design, the coreless-microfiber sensor operating near the turning around point has great significance application on molecular trace detection, especially in the fields of photochemical analysis and bioengineering.

Citation Download Citation

Yang Jiang, Jixuan Wu, Hua Bai, Binbin Song, Cheng Zhang, Ye Li, Xinliang Gao, and Kaixing Huang "Small-scale refractive index sensing based on coreless microfiber operating near the turning around point", Proc. SPIE 12478, Thirteenth International Conference on Information Optics and Photonics (CIOP 2022), 1247839 (15 December 2022); https://doi.org/10.1117/12.2654816

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KEYWORDS

Liquids

Refractive index

Sensors

Single mode fibers

Biological research

Computing systems

Numerical simulations

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