Design and fabrication of an alternating dielectric multi-layer device for surface plasmon resonance sensor

Lin, Chii-Wann; Chen, Kuo‐Ping; Hsiao, Chien-Nan; Lin, Shiming; Lee, Chih‐Kung

doi:10.1016/j.snb.2005.02.044

Cited by 78 publications

(34 citation statements)

References 21 publications

(22 reference statements)

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“…Further investigations have to be done to claim this point since below 3 nm Pd does not form a closed film and the dielectric permittivity used in our simulation is not validated for a Pd island film. Adding an intermediate dielectric layer before the silver layer (Long range SP [28,29]) or a Bragg multilayer system [30][31][32] made of TiO 2 /SiO 2 could be another possible way to enhance the sensor SNR.…”

Section: Discussionmentioning

confidence: 99%

Fiber optic Surface Plasmon Resonance sensor based on wavelength modulation for hydrogen sensing

Perrotton¹,

Javahiraly²,

Slaman³

et al. 2011

Opt. Express

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Abstract:A new design of a fiber optic Surface Plasmon Resonance (SPR) sensor using Palladium as a sensitive layer for hydrogen detection is presented. In this approach, a transducer layer is deposited on the outside of a multimode fiber, after removing the optical cladding. The transducer layer is a multilayer stack made of a Silver, a Silica and a Palladium layer. The spectral modulation of the light transmitted by the fiber allows to detect the presence of hydrogen in the environment. The sensor is only sensitive to the Transverse Magnetic polarized light and the Traverse Electric polarized light can be used therefore as a reference signal. A more reliable response is expected for the fiber SPR hydrogen sensor based on spectral modulation instead of on intensity modulation. The multilayer thickness defines the sensor performance. The silica thickness tunes the resonant wavelength, whereas the Silver and Palladium thickness determine the sensor sensitivity. In an optimal configuration (NA = 0.22, 100 μm core radius and transducer length = 1 cm), the resonant wavelength is shifted over 17.6 nm at a concentration of 4% Hydrogen in Argon for the case of the 35 nm Silver/ 100 nm Silica/ 3 nm palladium multilayer.

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Section: Discussionmentioning

confidence: 99%

Fiber optic Surface Plasmon Resonance sensor based on wavelength modulation for hydrogen sensing

Perrotton¹,

Javahiraly²,

Slaman³

et al. 2011

Opt. Express

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show abstract

“…The resolution of a SPR sensor is improved as the linewidth of the SPR reflectivity dip curve decreases and a shift in the resonance angle or wavelength in response to the environmental index change increases [17,18]. With limited available metals for plasmonic application, most current efforts have been concentrated on decreasing the linewidth of the resonance curve [19][20][21]. In the last two decades, few methods were proposed to improve the sensitivity of the SPR sensor using the long range SPR method [22,23], the addition of gratings and nanostructures [24,25], combinations of metals and interferometric methods based on phase measurement [26,27], although a recent study [28] showed that the enhanced sensitivity reported by phase measurement techniques is questionable.…”

Section: Introductionmentioning

confidence: 99%

Surface plasmon optical sensor with enhanced sensitivity using top ZnO thin film

Bao

Jiang

et al. 2012

Appl. Phys. A

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Surface plasmon resonance (SPR) is one of the most sensitive label-free detection methods and has been used in a wide range of chemical and biochemical sensing. Upon using a 200 nm top layer of dielectric film with a high value of the real part ε of the dielectric function, on top of an SPR sensor in the Kretschmann configuration, the sensitivity is improved. The refractive index effect of dielectric film on sensitivity is usually ignored. Dielectric films with different refractive indices were prepared by radio frequency magnetron (RF) sputtering and measured with spectroscopic ellipsometry (SE). The imaginary part ε of the top nanolayer permittivity needs to be small enough in order to reduce the losses and get sharper dips. The stability of the sensor is also improved because the nanolayer is protecting the Ag film from interacting with the environment. The response curves of the Ag/ZnO chips were obtained by using SPR sensor. Theoretical analysis of the sensitivity of the SPR sensors with different ZnO film refractive indices is presented and studied. Both experimental and simulation results show that the Ag/ZnO films exhibit an enhanced SPR over the pure Ag film with a narrower full width at half maximum (FWHM). It shows that the top ZnO layer is effective in enhancing the surface plasmon resonance and thus its sensitivity.

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“…Particularly, the use of the surface plasmon wave with other plasmonic or guided modes appears to provide the most effective way of sharpening the SPR curve, thus enhancing the sensing resolution [10]. The resolution of an SPR line width of the SPR reflectivity curve decreases, and a shift in the resonance angle or wavelength in response to the environmental index change increases [11,12].…”

Section: Introductionmentioning

confidence: 99%

Resolution enhancement of optical surface plasmon resonance sensor using metamaterial

Pal¹,

Prajapati

Saini³

et al. 2015

Photonic Sens

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Abstract:In this paper, we present and discuss a path to extend the enhancement of the resolution of an optical surface plasmon resonance (SPR) sensor. Basically, our approach is to combine bi-metamaterial layers to design the SPR sensor. The calculation shows that the proposed SPR sensor structure has a preference over the conventional SPR sensors and bimetallic SPR sensors since it gives a much sharper reflectance dip and can achieve considerable sensitivity improvement when compared to the recently reported investigations. The effects of the metamaterial permittivity, permeability, and thickness on the reflectance curve are studied. It is also seen that metamaterial layers improve the field of the proposed SPR structure, which may provide a novel tool to significantly enhance the sensitivity and resolution of the sensors.

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Design and fabrication of an alternating dielectric multi-layer device for surface plasmon resonance sensor

Cited by 78 publications

References 21 publications

Fiber optic Surface Plasmon Resonance sensor based on wavelength modulation for hydrogen sensing

Fiber optic Surface Plasmon Resonance sensor based on wavelength modulation for hydrogen sensing

Surface plasmon optical sensor with enhanced sensitivity using top ZnO thin film

Resolution enhancement of optical surface plasmon resonance sensor using metamaterial

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