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Photonic Crystal Fiber Pollution Sensor Based on the Surface Plasmon Resonance Technology


  • Fatima Fadhil Abbas Department of Physics, College of Science, University of Baghdad, Baghdad, Iraq.
  • Soudad S. Ahmed Department of Physics, College of Science, University of Baghdad, Baghdad, Iraq.



Optical Fiber Sensor, Optical Fiber Surface Plasmon Resonance, Photonic Crystal Fiber, Polluted Water


Photonic Crystal Fiber (PCF) based on the Surface Plasmon Resonance (SPR) effect has been proposed to detect polluted water samples. The sensing characteristics are illustrated using the finite element method. The right hole of the right side of PCF core has been coated with chemically stable gold material to achieve the practical sensing approach. The performance parameter of the proposed sensor is investigated in terms of wavelength sensitivity, amplitude sensitivity, sensor resolution, and linearity of the resonant wavelength with the variation of refractive index of analyte. In the sensing range of 1.33 to 1.3624, maximum sensitivities of 1360.2 nm ∕ RIU and 184 RIU−1 are achieved with the high sensor resolutions of 7 ×10-5 RIU and 5.4× 10−5 RIU using wavelength and amplitude interrogation methods, respectively. The proposed sensor could be established to detect various refractive index (RI) of pollutions in water.


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