Long range surface plasmon resonance sensor based on side polished fiber with the buffer layer of magnesium fluoride

Feng, Xinjie; Yang, Mingxu; Luo, Yunhan; Tang, Jieyuan; Guan, Heyuan; Fang, Junbin; Lu, Huihui; Yu, Jianhui; Zhang, Jun; Chen, Zhe

doi:10.1007/s11082-017-0955-1

Cited by 24 publications

(6 citation statements)

References 8 publications

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“…Simulation results show that it is impossible to improve the wavelength sensitivity by changing the duty ratio, the lattice pitch of PCF, and the polishing depth. Compared to these design strategies of by the introduction of a small hollow core into MOF [1,11], optimizing air holes arrayed in MOF cladding [4][5][6][7][8][9][10], and sensitization processing at the polished surface [28,29], most noticeably, we proposed a more effective method for improving sensitivity in D-shaped fiber SPR sensor by making PCF or ordinary fiber with lower RI material. When the RI of PCF material is 1.36, the sensor has an extremely high sensitivity with a value of 21700 nm/RIU.…”

Section: Resultsmentioning

confidence: 99%

Surface plasmon resonance biosensor based on gold-coated side-polished hexagonal structure photonic crystal fiber

et al. 2017

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The refractive index sensing characteristics of the side-polished photonic crystal fiber (PCF) surface plasmon resonance (SPR) sensor are detailed investigated in this paper. We used the finite element method (FEM) to study the influences of the side-polished depth, air hole size, lattice constant, and the refractive index (RI) of the PCF material on sensing performance. The simulation results show that the side-polished depth, air hole size, lattice pitch have significant influence on the coupling strength between core mode and surface plasmon polaritons (SPPs), but have little influence on sensitivity; the coupling strength and sensitivity will significant increase with the decrease of RI of the PCF material. The sensitivity of the D-shaped PCF sensor is obtained to be as high as 21700 nm/RIU in the refractive index environment of 1.33-1.34, when the RI of the PCF material is controlled at 1.36. It revealed a new method of making ultra-high sensitivity SPR fiber sensor. Then we experimental demonstrated a SPR refractive sensor based on the side-polished single mode PCF and investigated the sensing performance. The experimental results of the plasmon resonance wavelength sensitivity agree well with the theoretical results. The presented gold-coated D-shaped PCF SPR sensor could be used as a simple, cost-effective, high sensitivity device in bio-chemical detection.

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Section: Resultsmentioning

confidence: 99%

Surface plasmon resonance biosensor based on gold-coated side-polished hexagonal structure photonic crystal fiber

et al. 2017

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“…cSPR, LRSPR and symmetrical SPR). The study led to the achievement of the best possible LRSPR design with maximum FOM while MgF 2 buffer layer thickness of 100 nm [27]. In 2019, a LRSPR sensor with enhanced performance was theoretically calculated and experimentally investigated, and the results of both simulation and experiment consistently indicated that the sensing performance parameters of the LRSPR sensor were improved [28].…”

Section: Introductionmentioning

confidence: 98%

Long-range surface plasmon resonance sensor based on side-polished D-shaped hexagonal structure photonic crystal fiber with the buffer layer of magnesium fluoride

Luo¹,

Meng²,

Li³

et al. 2021

J. Phys. D: Appl. Phys.

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In this paper, we demonstrate a long-range surface plasmon resonance (LRSPR) sensor based on D-shaped hexagonal structure photonic crystal fiber (PCF) with buffer layer of magnesium fluoride (MgF2). The theoretical analysis is first introduced to reveal surface plasmon polariton (SPP) mode excitation by the y-polarized core-guided mode. The influences exerted by different thicknesses of Au film and MgF2 buffer layer are theoretically investigated with the full vectorial finite element method for optimizing structure parameters. A novel status of electric field boundary (SEFB) technique is proposed to analyze the reciprocal sensing performance of symmetric LRSPR (sLRSPR) sensor. Theoretical simulation reveals that the LRSPR with PCF/MgF2 (100 nm)/Au (50 nm) architecture exhibits the significant performance and has an intensity sensitivity improvement of 160.13% compared with conventional SPR (cSPR) sensor. With the simulation providing the theoretical basis, a proof-of-concept experiment is performed with the D-shaped PCF fabricated by a wheel polishing system. The experimental results show good agreement with the theoretical calculations, and both of them consistently indicate that the LRSPR-based sensor has an improved intensity sensitivity (−490.625% RIU−1) and an increased penetration depth. Furthermore, focusing on the sensing principle, the proposed SEFB method can be applied in the analysis of other types of multilayer SPR sensor. The optimal LRSPR sensor with improved detection accuracy shows great promise for applications in the field of biochemical measurement.

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“…Because a thinner waveguide gives rise to an increase in the electric field density in the waveguide, as well as an increase in the mode field overlap between the dielectric waveguide mode and SPP mode. To illustrate the characteristics of the proposed design, key parameters of the SPR-based RI sensors are compared with those in some reported works [39][40][41][42]. As shown in Table 4, the designed SPR sensor in this work has a balanced performance of high sensitivity of 3 764.23 and high FOM of 114.07.…”

Section: Effects Of the Thickness Of The Waveguidementioning

confidence: 97%

Polymer Waveguide Coupled Surface Plasmon Refractive Index Sensor: A Theoretical Study

Yang

Shi

et al. 2020

Photonic Sens

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A waveguide coupled surface plasmon sensor for detection of liquid with high refractive index (RI) is designed based on polymer materials. The effects of variation of the thickness of the Au film, polymethyl methacrylate (PMMA) buffer, and waveguide layer on the sensing performance of the waveguide are comprehensively investigated by using the finite difference method. Numerical simulations show that a thinner gold film gives rise to a more sensitive structure, while the variation of the thickness of the PMMA buffer and waveguide layer has a little effect on the sensitivity. For liquid with high RI, the sensitivity of the sensor increases significantly. When RI of liquid to be measured increases from 1.45 to 1.52, the sensitivity is as high as 4518.14nm/RIU, and a high figure of merit of 114.07 is obtained. The waveguide coupled surface plasmon RI sensor shows potential applications in the fields of environment, industry, and agriculture sensing with the merits of compact size, low cost, and high integration density.

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Long range surface plasmon resonance sensor based on side polished fiber with the buffer layer of magnesium fluoride

Cited by 24 publications

References 8 publications

Surface plasmon resonance biosensor based on gold-coated side-polished hexagonal structure photonic crystal fiber

Surface plasmon resonance biosensor based on gold-coated side-polished hexagonal structure photonic crystal fiber

Long-range surface plasmon resonance sensor based on side-polished D-shaped hexagonal structure photonic crystal fiber with the buffer layer of magnesium fluoride

Polymer Waveguide Coupled Surface Plasmon Refractive Index Sensor: A Theoretical Study

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