https://doi.org/10.1140/epjd/s10053-023-00655-z
Regular Article – Optical Phenomena and Photonics
Photonic crystal fiber-based plasmonic sensor with ITO for medical applications
College of Electrical Engineering, North China University of Water Resources and Electric Power, 450045, Zhengzhou, China
Received:
6
December
2022
Accepted:
13
April
2023
Published online:
28
April
2023
In this paper, a photonic crystal fiber sensor is proposed for urine analysis of diabetic patients. Indium tin oxide (ITO) is adopted as plasmonic material to be coated on the polished plane to ensure a high flatness of the coating. The sensor is immersed in the liquid analyte for detection. Since the refractive index of the abnormal analyte is different from that of the normal level analyte, the change of its refractive index can be determined by comparing and analyzing the shifts of confinement loss peak shift. Simulation results show that the maximum wavelength sensitivity and resolution are 25,000 nm/RIU and 4 × 10−6 RIU in the refractive index detection range of 1.320–1.355. In addition, the sensor proposed in this paper can change the detection range and sensitivity by changing the thickness of ITO film, which means the thickness of ITO film can be optimized according to the application requirements to achieve customized PCF sensor. To sum up, the sensor proposed in this paper has potential applications in medical and chemical fields.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
