Numerical investigation into a surface plasmon resonance sensor based on optical fiber microring

Chen, Zhao; Wang, Yanru; Wang, Dongning; Ding, Zhewen

doi:10.1007/s13320-017-0359-7

Cited by 11 publications

(3 citation statements)

References 25 publications

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“…The refractive index of silica glass n s core changes with wavelength λ in unite of µm according to the Sellmeier equation ( 1 ) 18 – 23 : where a 1 , a 2 , a 3 , b 1 , b 2 , and b 3 represent Sellmeier coefficients as mentioned in references 24 – 26 .…”

Section: Theory and Simulationmentioning

confidence: 99%

A gold nanoparticles coated unclad single mode fiber-optic sensor based on localized surface plasmon resonance

Fakhri

Salim

Tariq

et al. 2023

Sci Rep

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In the last few decays, the fiber-optic was employed in the field of sensing because of its benefits in contrast to other types of sensors such as small size, easy to fabricate, high response, and flexibility. In this study, unclad single mode fiber-optic sensor is proposed to operate at 650 nm wavelength. COMSOL Multiphysics 5.1 finite element method (FEM) is used to design the sensor and tested it theoretically. The middle portion of the fiber cladding is removed and replaced by gold nanoparticles (Au NPs) of 50 nm thickness. Analytic layer of 3 μm thickness was immersed in different liquids in range of refractive index (RI) from 1.000281 to 1.39. These liquids are NaCl Deionized (DI) water solution, sucrose-Deionized (DI) water solution, and glycerol solution Deionized (DI) water. It was found that the highest obtained sensitivity and resolution are for glycerol-DI water solution with value of 3157.98 (nm/RIU) and 3.16 × 10–5 (RIU), respectively. Furthermore, it is easy to fabricate and of low cost. In experiments, pulsed laser ablation (PLA) was used to prepare Au NPs. X-ray diffraction (XRD) shown that the peak of the intensity grew as the ablated energy increased as well as the structure crystallization. Transmission electron microscopy (TEM) revealed an average diameter of 30 nm at the three ablated energies, while X-ray spectroscopy (EDX) spectrum has indicated the presence of Au NPs in the prepared solution. The photoluminescence (PL) and ultraviolet–visible UV–Vis transmission were used to study the optical properties of the prepared Au NPs. An optical spectrum analyzer was used to obtain the sensor's output results. It has shown that best intensity was obtained for sucrose which confined with theoretical results.

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Section: Theory and Simulationmentioning

confidence: 99%

A gold nanoparticles coated unclad single mode fiber-optic sensor based on localized surface plasmon resonance

Fakhri

Salim

Tariq

et al. 2023

Sci Rep

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“…in health monitoring [15]. Various optical fiber sensors have been developed by integrating functional nanostructures on different locations, including on porous microstructured fibers [16,17], on the exterior curved surface of a tapered or uncladded fiber [18,19], or within the fiber core through diffraction gratings [20,21]. Notably, the application of nanostructures on the optical fiber tip facilitates the creation of highly sensitive, label-free sensors.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Si-Au plasmonic sensor on the end-facet of a dual-core optical fiber enhanced by hotspots: a theoretical study

Mahani,

Mokhtari,

Berini

2024

Phys. Scr.

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We propose an efficient hybrid Si-Au sensor on the end-facet of a dual-core single-mode optical fiber. The design incorporates slanted Si grating couplers on the two cores, interconnected by a plasmonic waveguide bearing subwavelength corrugations. The corrugations enhance the surface sensitivity by creating regions of strongly enhanced fields - plasmonic hotspots. Unlike conventional Si waveguide grating couplers, we employ slanted slits for unidirectional coupling/decoupling between TM-polarized core light and surface plasmon polaritons. Our structure results in about 3% core-to-core (TM-to-TM) coupling efficiency, while also providing high bulk and surface sensitivities of about 1000 nm/RIU and 1.66 nm/nm, respectively. The sensor can be interrogated remotely in a transmission arrangement. The sensing medium can be probed by dipping the fiber tip directly therein. Potential applications include remote sensing, brain studies, or in-vivo biosensing.

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“…Several fiber-optic sensor structures based on surface plasmon resonance (SPR) have been reported as follows: hetero-core (Liu et al, 2017), U-shaped (Semwal et al, 2016), D-shaped (Patnaik et al, 2015), tapered (Goswami et al, 2016), end-face reflected (Zhao et al, 2017), and unclad/etched sensing structures (Shrivastav et al, 2016). Unclad/etched sensing structures are made by removing the part of the optical fiber cladding and then coating the sensing region on the fiber surface with metal film (using silver, gold, platinum, and other metals) via physical evaporation, sputtering, or electroless plating (ELP).…”

Section: Introductionmentioning

confidence: 99%

Real-Time Thickness Measurement of Marine Oil Spill by Fiber-Optic Surface Plasmon Resonance Sensors

et al. 2022

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Rapid detection of marine oil spills is becoming increasingly critical in the face of frequent marine oil spills. Oil slick thickness measurement is critical in the hazard assessment of such oil leaks. As surface plasmon resonance (SPR) sensors are sensitive to slight changes in refractive index, they can monitor offshore oil spills arising from significant differences in the refractive index between oil and water. This study presents a gold-film fiber-optic surface plasmon resonance (FOSPR) sensor prepared by polydopamine accelerated wet chemical plating for rapid and real-time measurement of oil slick thickness. We examined oil thickness detection at two interfaces, namely, water-oil and air-oil. Detection sensitivity of −1.373%/mm is obtained at the water-oil interface in the thickness range of 0–5 mm; detection sensitivity of −2.742%/mm is obtained at the air-oil interface in the thickness range of 0–10 mm. Temperature and salinity present negligible effects on the oil slick thickness measurement. The fabricated FOSPR sensor has the ability to detect the presence of oil as well as quantify the oil thickness. It has favorable repeatability and reusability, demonstrating the significant potential for use in the estimation of marine oil slick thickness.

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Numerical investigation into a surface plasmon resonance sensor based on optical fiber microring

Cited by 11 publications

References 25 publications

A gold nanoparticles coated unclad single mode fiber-optic sensor based on localized surface plasmon resonance

A gold nanoparticles coated unclad single mode fiber-optic sensor based on localized surface plasmon resonance

Hybrid Si-Au plasmonic sensor on the end-facet of a dual-core optical fiber enhanced by hotspots: a theoretical study

Real-Time Thickness Measurement of Marine Oil Spill by Fiber-Optic Surface Plasmon Resonance Sensors

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