Copper-Graphene-Based Photonic Crystal Fiber Plasmonic Biosensor

By A. Rifat, G. Amouzad Mahdiraji, Rajib Ahmed, Desmond M. Chow, Yong Meng Sua, Yu Gang Shee, F. Adikan. IEEE Photonics Journal, 2016

205 citations recorded by the source corpus.

We propose a photonic crystal fiber surface plasmon resonance biosensor where the plasmonic metal layer and the sensing layer are placed outside the fiber structure, which makes the sensor configuration practically simpler and the sensing process more straightforward. Considering the long-term stability of the plasmonic performance, copper (Cu) is used as the plasmonic material, and graphene is used to prevent Cu oxidation and enhance sensing performance. Numerical investigation of guiding properties and sensing performance is performed by using a finite-element method. The proposed sensor shows average wavelength interrogation sensitivity of 2000 nm/refractive index unit (RIU) over the analyte refractive indices ranging from 1.33 to 1.37, which leads to a sensor resolution of 5 × 10-5 RIU. Due to the simple structure and promising results, the proposed sensor could be a potential candidate for detecting biomolecules, organic chemicals, and other analytes.

Subfields: Biomedical Engineering, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/77deaa31113170301e9ceb88c207852458ddbcf2

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Citations in the corpus

Photonic crystal fiber based plasmonic sensors (2017, unknown): “The PCF SPR sensors are improved by placing a metal layer and sensing medium outside the fiber structure [33, 40, 41, 48, 131-135].”
Spiral Photonic Crystal Fiber-Based Dual-Polarized Surface Plasmon Resonance Biosensor (2018, methodology): “PCF surface [21]–[24].”
Surface Plasmon Resonance Sensor Based on Modified $D$ -Shaped Photonic Crystal Fiber for Wider Range of Refractive Index Detection (2018, methodology): “[5] proposed a SPR biosensor where copper was used as a plasmonic metal layer.”
Highly Sensitive D-Shaped Photonic Crystal Fiber-Based Plasmonic Biosensor in Visible to Near-IR (2017, background): “To date, numerous PCF SPR sensors have been reported which can be classified into five categories such as internal metal coated [9], [11], nanowire based [12]–[14], microfluidic slotted based [10], [15], external sensing approaches [16], [17] and D-shaped [18]–[20].”
Recent advances in plasmonic photonic crystal fibers: design, fabrication and applications (2017, methodology): “The proposed sensor was analyzed for both amplitude and wavelength interrogation, and the respective RI sensitivities were 140 RIU-1 and 2000 nm/RIU [132].”