A refractive index sensor design based on grating-assisted coupling between a strip waveguide and a slot waveguide.

@article{Liu2013ARI,
  title={A refractive index sensor design based on grating-assisted coupling between a strip waveguide and a slot waveguide.},
  author={Qing Liu and Jack Sheng Kee and Mi Kyoung Park},
  journal={Optics express},
  year={2013},
  volume={21 5},
  pages={
          5897-909
        }
}
In this paper, we present a design of a refractive index sensor based on grating-assisted light coupling between a strip waveguide and a slot waveguide. The slot waveguide serves as the sensing waveguide while the strip waveguide is used for light launching and detection. The wavelength at which the light is coupled from the strip waveguide to the slot waveguide serves as a measure of the refractive index of the external medium. The sensitivity of the sensor is ~1.46 × 10(3) nm/RIU (refractive… CONTINUE READING

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