D-Shaped Photonic Crystal Fiber–Based Surface Plasmon Resonance Biosensors with Spatially Distributed Bimetallic Layers

Gupta, Ankur; Singh, Harpreet; Singh, Ankit; Singh, Rajat Kumar; Tiwari, Akhilesh

doi:10.1007/s11468-020-01157-z

Cited by 27 publications

(10 citation statements)

References 28 publications

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“…The physical field is used to control the grid and the element size is conventional. ronmental parameters based on the principle of evanescent wave absorption [11][12][13].…”

Section: Working Principlesmentioning

confidence: 99%

“…The flexible structures and diversity of fillers make PCF have more excellent characteristics than traditional fibers. D-shaped PCF refers to a plane on the side of PCF, which can be used to detect environmental parameters based on the principle of evanescent wave absorption [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…Magnetic field sensors have been extensively investigated in terms of their principles of operation and the performance characteristics under different applications [12]. In order Sensors 2021, 21, 6130 2 of 9 to obtain high fidelity outputs, sensitivity and selectivity are two key characteristics for magnetic field sensors [13]. Optical fiber magnetic field sensors possess many advantages, such as small volume, anti-interference, high sensitivity and accuracy, corrosion resistance and so on, showing great potential in real-time and remote sensing of the magnetic field [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

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A Magnetic Field SPR Sensor Based on Temperature Self-Reference

Liu

et al. 2021

Sensors

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In this paper, a novel D-shaped photonic crystal fiber sensor for simultaneous measurements of magnetic field and temperature is proposed and characterized. Based on the surface plasmon resonance theory, the D-shaped flat surface coated with a gold layer is in direct contact with magnetic fluid to detect magnetic field, and one of the relatively small air holes near the fiber core is filled with polydimethylsiloxane (PDMS) to sense temperature. The realization of measuring the magnetic field and temperature separately through two channels depends on the fact that the magnetic field only changes the refractive index of the magnetic fluid, but has no effect on the refractive index of PDMS. The refractive index of the magnetic fluid and PDMS can be affected by temperature at the same time. The sensor designed in this work can separate the variations of the magnetic field and temperature simultaneously, therefore solving the cross-sensitivity problem to further improve the magnetic field sensitivity. When the thickness of the gold film is 50 nm and the radius of the filling hole is 0.52 µm, the magnetic field sensitivity and the temperature sensitivity of magnetic field sensor based on temperature self-reference can reach 0.14274 nm/Oe and −0.229 nm/°C, respectively.

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“…The physical field is used to control the grid and the element size is conventional. ronmental parameters based on the principle of evanescent wave absorption [11][12][13].…”

Section: Working Principlesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Magnetic Field SPR Sensor Based on Temperature Self-Reference

Liu

et al. 2021

Sensors

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“…PCF has gained widespread attention among scientists and researchers because of its exceptional amenities facilities over conventional fibers, such as high birefringence [ 1 ], broad modal area [ 2 ], tunable nonlinearity [ 3 ], endless single mode [ 4 ], very low confinement loss [ 5 ], and tunable dispersion [ 6 , 7 ]. In recent years, SPR is one of the distinguished sensing technology that is applied in the large border area of sensing application fields [ 8 , 9 , 10 , 11 ]. In metal-coated PCF, SPR is formed when the phase-matching condition is fulfilled, which means that the surface plasmon polarization (SPP) mode and fundamental mode belong to the same propagation constant at a specific wavelength [ 12 , 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive Twin Resonance Coupling Refractive Index Sensor Based on Gold- and MgF2-Coated Nano Metal Films

et al. 2021

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A plasmonic material-coated circular-shaped photonic crystal fiber (C-PCF) sensor based on surface plasmon resonance (SPR) is proposed to explore the optical guiding performance of the refractive index (RI) sensing at 1.7–3.7 μm. A twin resonance coupling profile is observed by selectively infiltrating liquid using finite element method (FEM). A nano-ring gold layer with a magnesium fluoride (MgF2) coating and fused silica are used as plasmonic and base material, respectively, that help to achieve maximum sensing performance. RI analytes are highly sensitive to SPR and are injected into the outmost air holes of the cladding. The highest sensitivity of 27,958.49 nm/RIU, birefringence of 3.9 ×10−4, resolution of 3.70094 ×10−5 RIU, and transmittance dip of −34 dB are achieved. The proposed work is a purely numerical simulation with proper optimization. The value of optimization has been referred to with an experimental tolerance value, but at the same time it has been ensured that it is not fabricated and tested. In summary, the explored C-PCF can widely be eligible for RI-based sensing applications for its excellent performance, which makes it a solid candidate for next generation biosensing applications.

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“…Surface Plasmon Resonance (SPR) is a phenomenon which happens when the polarized light strikes a metal surface at the boundary with different refractive indices (RI) mediums which excites collective oscillations of free electrons of metal surface [2]. These oscillations are highly sensitive to change in RI of medium so this technique is useful to design different type of sensors [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. Photonic Crystal Fibers (PCF) are type of optical fibers with single material by creating air-holes in cladding along the fiber length.…”

Section: Introductionmentioning

confidence: 99%