Roughness effect on the SPR measurements for an optical fibre configuration: experimental and numerical approaches

Kanso, Malak; Cuenot, Stéphane; Louarn, G.

doi:10.1088/1464-4258/9/7/008

Cited by 65 publications

(37 citation statements)

References 23 publications

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“…The values of these two parameters were previously determined from AFM images of gold surface: q=0.51, d=5.75 nm [15,32]. By a statistical analysis of the height distribution, d is close to three-times the root mean square roughness (also, namely, Rq) for a Gaussian height distribution.…”

Section: Methodsmentioning

confidence: 99%

“…5) is determined according to the Maxwell Garnett theory by defining an added pseudolayer (Fig. 4) [15,26,27].…”

Section: Theory Backgroundmentioning

confidence: 99%

“…For gold-coated SPR sensors, it is possible to evaluate more than 200 cycles without changing the biological receptor due to the stability of the system. In a recent paper, the effects of this gold layer on the SPR response curves were investigated from numerical simulations, as well as by the experimental approach [15]. This paper was focused on the role of metallic layer roughness, which was considered in the w-k dispersion relationship (perturbation term extracted from the spatial treatment of the roughness).…”

Section: Introductionmentioning

confidence: 99%

“…Until recently, numerous works, theoretical and experimental, have been devoted to the study of different parameters of the metallic layer on the location of SPR absorption bands [6,7,[15][16][17][18][19][20][21]. However, to our knowledge, no study has focused on the comparison between experimental SPR response curves and simulated ones in the case of an optical fiber configuration.…”

Section: Introductionmentioning

confidence: 99%

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Sensitivity of Optical Fiber Sensor Based on Surface Plasmon Resonance: Modeling and Experiments

2008

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In this paper, surface plasmon resonance curves of an optical fiber-based sensor were investigated. From an experimental and theoretical perspective, the response curves were analyzed and discussed. Precisely, such curves were calculated by modeling the analyte/metallic layer interface using a multilayer system, including the effects of roughness. Then, the experimental response curves observed in solutions with different refractive indices were compared to the simulated curves. Good agreement was obtained with respect to the resonance peak location and the shape of the curves. Consequently, these results enabled us to predict the ideal functioning conditions of the sensor, i.e., the working parameters corresponding to the best sensitivities of detection.

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Section: Methodsmentioning

confidence: 99%

“…5) is determined according to the Maxwell Garnett theory by defining an added pseudolayer (Fig. 4) [15,26,27].…”

Section: Theory Backgroundmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sensitivity of Optical Fiber Sensor Based on Surface Plasmon Resonance: Modeling and Experiments

2008

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“…Gold and silver are the most widely used SPR metals in sensing applications. Gold is chemically stable and shows a larger shift of resonance wavelength, but it has certain limitations like larger absorption coefficient leading to a broader resonance peak, formation of island in very thin layers, band to band transition, and surface roughness arising due to thermal evaporation [8]. Silver shows a sharper resonance peak compared to gold which can increase the detection accuracy.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Graphene-Based Photonic Crystal Fiber Sensor Using Birefringence and Surface Plasmon Resonance

et al. 2016

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We present and numerically characterize a photonic crystal fiber (PCF)-based surface plasmon resonance (SPR) sensor. By adjusting the air hole sizes of the PCF, the effective refractive index (RI) of core-guided mode can be tuned effectively and the sensor exhibits strong birefringence. Alternate holes coated with graphene-Ag bimetallic layers in the second layer are used as analyte channels, which can avoid adjacent interference and improve the signal to noise ratio (SNR). The graphene's good features can not only solve the problem of silver oxidation but also increase the absorption of molecules. We theoretically analyze the influence of the air hole sizes of the PCF and the thicknesses of graphene layer and Ag layer on the performance of the designed sensor using wavelength and amplitude interrogations. The wavelength sensitivity we obtained is as high as 2520 nm/RIU with the resolution of 3.97 × 10 −5 RIU, which can provide a reference for developing a high-sensitivity, real-time, fast-response, and distributed SPR sensor.

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Multichannel Fiber Optic SPR Sensors: Realization Methods, Application Status, and Future Prospects

Zhang

Han

Zhang

et al. 2022

Laser & Photonics Reviews

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Fiber optic sensors based on surface plasmon resonance (SPR) have demonstrated outstanding performance in biomedical, environmental monitoring, public safety, and other aspects, which provide powerful platforms for qualitative detection and quantitative analysis of molecular interactions. Among them, multichannel fiber optic SPR sensor has become a core tool in parallel detection scenarios due to the superiorities of compensating for nonspecific binding and environmental fluctuations and implementing multianalyte determination. The realization methods of multichannel sensing revolve around fiber microstructures, enhancement by materials, and hybrid fiber. The applications of multichannel fiber optic SPR sensors are demonstrated in sensing of liquid refractive index (RI), RI and temperature, biochemical molecules, and physical parameters. This review thoroughly analyzes and compares the structure, excitation effect, sensing performance, and the advantages and disadvantages of each type of multichannel fiber optic SPR sensor. Even though there are still some challenges, such as insufficient sensing channels and difficulty in fabrication, in their advancement, efforts in multidiscipline including developing high-performance sensitive films and innovating micro-nano fabrication processes will overcome these bottlenecks. Lastly, the future development directions of multichannel fiber optic SPR sensors from principle, structure, and material aspects are discussed.

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Roughness effect on the SPR measurements for an optical fibre configuration: experimental and numerical approaches

Cited by 65 publications

References 23 publications

Sensitivity of Optical Fiber Sensor Based on Surface Plasmon Resonance: Modeling and Experiments

Sensitivity of Optical Fiber Sensor Based on Surface Plasmon Resonance: Modeling and Experiments

Analysis of Graphene-Based Photonic Crystal Fiber Sensor Using Birefringence and Surface Plasmon Resonance

Multichannel Fiber Optic SPR Sensors: Realization Methods, Application Status, and Future Prospects

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