Mid-infrared surface plasmon resonance sensor based on photonic crystal fibers

Liu, Chao; Yang, Lin; Lu, Xi Li; Liu, Qiang; Wang, Famei; Lv, Jingwei; Sun, Tao; Mu, Hai‐Bao; Chu, Paul K.

doi:10.1364/oe.25.014227

Cited by 258 publications

(69 citation statements)

References 24 publications

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“…For λ3, it is not difficult to see the interaction between the Au cube and SiO2 under the action of incident waves through Figure 4i. From Figure 4, it can be concluded that the surface plasmon polaritons' (SPPs) resonance and Fabry-Pero resonance show that there will be a strong electromagnetic field distribution near the nano scale groove [61][62][63]. In addition, in order to better understand the physical mechanism of peaks, we calculate the Figure 3a-c the corresponding electric diagram in the XOY plane.…”

Section: Refermentioning

confidence: 99%

A Tunable Triple-Band Near-Infrared Metamaterial Absorber Based on Au Nano-Cuboids Array

et al. 2020

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In this article, we present a design for a triple-band tunable metamaterial absorber with an Au nano-cuboids array, and undertake numerical research about its optical properties and local electromagnetic field enhancement. The proposed structure is investigated by the finite-difference time domain (FDTD) method, and we find that it has triple-band tunable perfect absorption peaks in the near infrared band (1000–2500 nm). We investigate some of structure parameters that influence the fields of surface plasmons (SP) resonances of the nano array structure. By adjusting the relevant structural parameters, we can accomplish the regulation of the surface plasmons resonance (SPR) peaks. In addition, the triple-band resonant wavelength of the absorber has good operational angle-polarization-tolerance. We believe that the excellent properties of our designed absorber have promising applications in plasma-enhanced photovoltaic, optical absorption switching and infrared modulator optical communication.

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Section: Refermentioning

confidence: 99%

A Tunable Triple-Band Near-Infrared Metamaterial Absorber Based on Au Nano-Cuboids Array

et al. 2020

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“…air RI of the core-cladding was taken as = n 2 1 and = n 1.45 2 respectively. The dielectric constant of gold in the visible and near-IR region is defined by the Drude model described as [22]:…”

Section: Structure Design and Numerical Modelingmentioning

confidence: 99%

Significantly enhanced sensitivity using a gold aperture arrays-dielectric hybrid structure in optical fiber sensor

Xiao

Pan

et al. 2019

J. Phys. Commun.

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In this paper, we propose a novel gold aperture arrays-dielectric hybrid structure in optical fiber sensor (OFS) based on the extraordinary optical transmission (EOT) property to explore the possibility of increasing its sensitivity. Numerical investigations show that the match between effective indices of the fundamental core mode and surface plasmon polariton (SPP) mode of gold aperture arraysdielectric interface affects the sensitivity enhancement by using mode analysis approach. The essential parameters of the hybrid structure including the gold film thickness and dielectric refractive index (RI) as well as its thickness, which affect the EOT, are discussed and optimized. An average sensitivity of 180±7 nm/RIU in the sensing range 1.30-1.45 with high linearity is obtained. It is demonstrated that a significant sensitivity enhancement with a dielectric layer (its RI is 1.90 and its thickness is 50 nm) up to 105 arbitrary units (∼140%) is clearly observed more than that without a dielectric layer. The averaged figure of merit (FOM) of the proposed OFS is calculated to be 12.5 RIU −1 . Our findings indicate that this proposed hybrid structure may offer great potential in designing and optimizing a high-performance OFS.

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“…The application of levitated monolayer graphene in photovoltaic field is limited to some extent because its absorption efficiency of ordinary incident light is merely 2.3% [26]. All in all, resonance effect is the key method for enhancing material absorption or emission [27,28]. In the middle and far infrared bands, graphene has high plasma resonance, which is widely made use of enhancing the absorption efficiency of graphene.…”

Section: Introductionmentioning

confidence: 99%

High Quality Factor, High Sensitivity Metamaterial Graphene—Perfect Absorber Based on Critical Coupling Theory and Impedance Matching

et al. 2020

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By means of critical coupling and impedance matching theory, we have numerically simulated the perfect absorption of monolayer graphene. Through the critical coupling effect and impedance matching, we studied a perfect single-band absorption of the monolayer graphene and obtained high quality factor (Q-factor = 664.2) absorption spectrum which has an absorbance close to 100% in the near infrared region. The position of the absorption spectrum can be adjusted by changing the ratio between the radii of the elliptic cylinder air hole and the structural period. The sensitivity of the absorber can be achieved S = 342.7 nm/RIU (RIU is the per refractive index unit) and FOM = 199.2 (FOM is the figure of merit), which has great potential for development on biosensors. We believe that our research will have good application prospects in graphene photonic devices and optoelectronic devices.

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Mid-infrared surface plasmon resonance sensor based on photonic crystal fibers

Cited by 258 publications

References 24 publications

A Tunable Triple-Band Near-Infrared Metamaterial Absorber Based on Au Nano-Cuboids Array

A Tunable Triple-Band Near-Infrared Metamaterial Absorber Based on Au Nano-Cuboids Array

Significantly enhanced sensitivity using a gold aperture arrays-dielectric hybrid structure in optical fiber sensor

High Quality Factor, High Sensitivity Metamaterial Graphene—Perfect Absorber Based on Critical Coupling Theory and Impedance Matching

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