Figure of merit enhancement of surface plasmon resonance biosensor based on Talbot effect

Farhadi, Shahryar; Farmani, Ali; Hamidi, Abdolsamad

doi:10.1007/s11082-021-03168-4

Cited by 12 publications

(4 citation statements)

References 81 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hong et al studied the effect of laser reflection on photonic crystals. Where higher-order nonlinear images are subjected to the laser beam, a magnified image of surface plasmons on a silicon surface shows Talbot transient reflection images caused by electrons floating on the plasma surface 22 – 25 . Some of the researches conducted in the Talbot effect plasmonic are given in Table 1 .…”

Section: Application Of Talbot Effect In Plasmonic Structuresmentioning

confidence: 99%

Observation of Plasmonics Talbot effect in graphene nanostructures

Farmani,

Omidniaee

2024

Sci Rep

Self Cite

View full text Add to dashboard Cite

We report on the theoretical models of the plasmoincs Talbot effect in graphene nanostructure. The Talbot effect for the plasmonics applications in the IR range is theoretically studied and the respective Talbot effect for the novel advanced plasmonics structures are numerically investigated for the first time. It is shown that the metamaterial structures with periodic grating configuration represents a complex three-dimensional lattice of beamlet-like graphene plasmonics devices. The calculated results agree well with the experimental ones. The results obtained can be used to create and optimize the structures considering diffraction limit for a wide range of application areas. Effective focusing of plasmonic waves with exact focal spots and a subwavelength full width at half maximum can be obtained by using periodic graphene grating.

show abstract

Section: Application Of Talbot Effect In Plasmonic Structuresmentioning

confidence: 99%

Observation of Plasmonics Talbot effect in graphene nanostructures

Farmani,

Omidniaee

2024

Sci Rep

Self Cite

View full text Add to dashboard Cite

show abstract

“…The conventional method for calculating the bulk sensitivity under wavelength interrogation is to determine the shift in the resonance wavelength (∆λ r ) resulting from changes in the bulk RI of the sensing solution (∆n a ), S = ∆λ r /∆n a . Another important parameter of sensor performance is the figure of merit (FoM), defined as FoM = S/FWHM [40], where FWHM denotes the full-width at half-maximum of the transmittance spectrum.…”

Section: Sensitivity Computationsmentioning

confidence: 99%

Plasmonic Biosensor on the End-Facet of a Dual-Core Single-Mode Optical Fiber

2023

View full text Add to dashboard Cite

Optical biosensors target widespread applications, such as drug discovery, medical diagnostics, food quality control, and environmental monitoring. Here, we propose a novel plasmonic biosensor on the end-facet of a dual-core single-mode optical fiber. The concept uses slanted metal gratings on each core, interconnected by a metal stripe biosensing waveguide to couple the cores via the propagation of surface plasmons along the end facet. The scheme enables operation in transmission (core-to-core), thereby eliminating the need to separate the reflected light from the incident light. Importantly, this simplifies and reduces the cost of the interrogation setup because a broadband polarization-maintaining optical fiber coupler or circulator is not required. The proposed biosensor enables remote sensing because the interrogation optoelectronics can be located remotely. In vivo biosensing and brain studies are also enabled because the end-facet can be inserted into a living body, once properly packaged. It can also be dipped into a vial, precluding the need for microfluidic channels or pumps. Bulk sensitivities of 880 nm/RIU and surface sensitivities of 1 nm/nm are predicted under spectral interrogation using cross-correlation analysis. The configuration is embodied by robust and experimentally realizable designs that can be fabricated, e.g., using metal evaporation and focused ion beam milling.

show abstract

“…The Talbot distance Z T is defined as the position at which waves periodically reproduce themselves along the propagation direction [4] . In addition to optics, this effect has also been widely studied and applied in condensed matter [5,6] , quantum revivals [7,8] , X-ray [9,10] , plasmonic [11,12] , electron [13,14] , primenumber decomposition [15] , and so on. Currently, research on the optical Talbot effect has expanded from the spatial domain [16][17][18] to the temporal domain [19][20][21] , from linear to nonlinear [22] , and from continuous media to discrete systems [16][17][18]23] .…”

Section: Introductionmentioning

confidence: 99%

Talbot effect in anti-PT symmetric synthetic photonic lattices

Liu,

Tang,

Wen

et al. 2024

中国光学快报

View full text Add to dashboard Cite

We investigated the Talbot effect in an anti-parity-time (PT) symmetric synthetic photonic lattice composed of two coupled fiber loops. We calculated the band structures and found that with an increase in the gain-loss parameter, the band transitions from a real spectrum to a complex spectrum. We study the influence of phase in the Hermitian operator on the Talbot effect, and the Talbot effect disappears when the period of the input field is N > 8. Further study shows that the variation of Talbot distance can also be modulated by non-Hermitian coefficients of gain and loss. This work may find significant applications in pulse repetition-rate multiplication, temporal invisibility, and tunable intensity amplifiers.

show abstract

Figure of merit enhancement of surface plasmon resonance biosensor based on Talbot effect

Cited by 12 publications

References 81 publications

Observation of Plasmonics Talbot effect in graphene nanostructures

Observation of Plasmonics Talbot effect in graphene nanostructures

Plasmonic Biosensor on the End-Facet of a Dual-Core Single-Mode Optical Fiber

Talbot effect in anti-PT symmetric synthetic photonic lattices

Contact Info

Product

Resources

About