Long Range Surface Plasmon Resonance Based Taper Fiber Optic Sensor with Enhanced Sensitivity using Au Nano-Layer through Radially Polarized Light

Citation

Chaurasia, Deepak, Nabamita Goswami, and Ardhendu Saha. "Long Range Surface Plasmon Resonance Based Taper Fiber Optic Sensor with Enhanced Sensitivity using Au Nano-Layer through Radially Polarized Light." IOP Conference Series: Materials Science and Engineering, vol. 225, 2017, 012103. IOPscience, doi:10.1088/1757-899X/225/1/012103.

Keywords

  • Fiber optic based sensor
  • Long range surface plasmon resonance
  • Radially polarized light
  • Tapered multi-mode fiber

Brief

Fiber optic based sensor, Long range surface plasmon resonance, Radially polarized light, Tapered multi-mode fiber.

Summary

The article presents a new theoretical design for a fiber optic sensor that uses long range surface plasmon (LRSP) resonance to measure changes in refractive index. The proposed sensor uses a tapered fiber optic probe coated with a layer of Teflon and gold. The researchers found that using a radially polarized light beam with the probe increases the sensor’s sensitivity by 1.7 times compared to probes using a p-polarized light beam. The increased sensitivity is attributed to the radial field distribution of the radially polarized light at the fiber surface. The authors note this is a unique SPR-based tapered fiber sensing probe.

Origin: https://iopscience.iop.org/article/10.1088/1757-899X/225/1/012103

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