Photonic Crystal Fiber-Based Surface Plasmon Resonance Sensor with Selective Analyte Channels and Graphene-Silver Deposited Core

By A. Rifat, G. Amouzad Mahdiraji, Desmond M. Chow, Yu Gang Shee, Rajib Ahmed, Faisal Rafiq, M. Adikan, Gary Pickrell, Daniel Homa. Italian National Conference on Sensors, 2015

310 citations recorded by the source corpus.

We propose a surface plasmon resonance (SPR) sensor based on photonic crystal fiber (PCF) with selectively filled analyte channels. Silver is used as the plasmonic material to accurately detect the analytes and is coated with a thin graphene layer to prevent oxidation. The liquid-filled cores are placed near to the metallic channel for easy excitation of free electrons to produce surface plasmon waves (SPWs). Surface plasmons along the metal surface are excited with a leaky Gaussian-like core guided mode. Numerical investigations of the fiber’s properties and sensing performance are performed using the finite element method (FEM). The proposed sensor shows maximum amplitude sensitivity of 418 Refractive Index Units (RIU−1) with resolution as high as 2.4 × 10−5 RIU. Using the wavelength interrogation method, a maximum refractive index (RI) sensitivity of 3000 nm/RIU in the sensing range of 1.46–1.49 is achieved. The proposed sensor is suitable for detecting various high RI chemicals, biochemical and organic chemical analytes. Additionally, the effects of fiber structural parameters on the properties of plasmonic excitation are investigated and optimized for sensing performance as well as reducing the sensor’s footprint.

Subfields: Biomedical Engineering, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/81c7869c005a74b98333f1824bb924f2755f9e01

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Citations in the corpus

Surface plasmon resonance (SPR) infrared sensor based on D-shape photonic crystal fibers with ITO coatings (2020, background): “In this case, the confinement loss has the maximum value because of the strong coupling as well as energy transfer of the fundamental mode to SPP [29,48].”
Recent advances in plasmonic photonic crystal fibers: design, fabrication and applications (2017, methodology): “Both amplitude and wavelength interrogation methods were considered, and their respective sensitivity levels were 418 RIU-1 and 3000 nm/RIU [130].”
Highly Sensitive D-Shaped Photonic Crystal Fiber-Based Plasmonic Biosensor in Visible to Near-IR (2017, methodology): “By controlling the light propagation, strong coupling between the core mode and surface plasmon polaritons (spp) mode can be achieved, consequently improving the sensors performance [9], [10].”
Copper-Graphene-Based Photonic Crystal Fiber Plasmonic Biosensor (2016, background): “Amplitude sensitivity is given in the following equation [7]:”
Photonic crystal fiber based plasmonic sensors (2017, methodology): “To date, several PCF SPR sensors have been reported where the plasmonic metal layer were coated selectively inside the micron scale air-hole surface [43, 44, 46, 47, 59, 111-115].”