Journal
IEEE SENSORS JOURNAL
Volume 22, Issue 15, Pages 14834-14841Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2022.3181198
Keywords
Optical fiber sensors; surface plasmon resonance; malaria; refractive index; photonic crystal fiber
Funding
- Fund for Improvement of S&T Infrastructure, Department of Science and Technology, India (DST-FIST), Government of India [SR/FST/ETI-418/2016]
- Double-Hundred Talent Plan of Shandong Province, China
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This paper proposes a D-shaped photonic crystal fiber sensor based on surface plasmon resonance with a micro-rectangular opening. The sensor has strong coupling between the metal layer and the core-guided mode, allowing for high sensitivity and resolution. The sensor is easy to fabricate and can be used for malaria disease detection.
In this paper, a D-shaped photonic crystal fiber (PCF) sensor based on surface plasmon resonance with a micro-rectangular opening is proposed. The micro-rectangular opening introduces strong coupling between the metal layer and the core-guided mode as it helps in reducing the distance between the sensing channel and the core of the PCF. Gold (Au) is a noble plasmonic material, which is depositedon themicro-rectangularopening in order to generate an ample amount of surface plasmon on the micro-opening area's surface. This micro opening also allows for the ease of fabrication while maintaining strong bio-detection capabilities. The obtained results as maximum wavelength sensitivity, resolution, and figure of merit are 67,000 nm/RIU, 1.5 x 10(-6) RIU and 279.16 RIU-1 respectively. These results indicate that they are significantly finer than those existing in the related state of the art, and that the proposed fiber sensor is easy to fabricate. Further, the proposed fiber sensor is utilized for the detection of malaria disease. The proposed sensor's computed sensitivities for ring stage, trophozoite stage, and schizont stage RBCs of malaria disease are 25,715.30 nm/RIU, 33,157.89 nm/RIU, and 44,827.58 nm/RIU, respectively.
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