• DOI:10.1364/OL.28.002037
• Corpus ID: 38971880

Distributed three-dimensional fiber Bragg grating refractometer for biochemical sensing.

@article{Keren2003DistributedTF,
  title={Distributed three-dimensional fiber Bragg grating refractometer for biochemical sensing.},
  author={Shay Keren and Moshe Horowitz},
  journal={Optics letters},
  year={2003},
  volume={28 21},
  pages={
          2037-9
        }
}

• S. Keren, M. Horowitz
• Published 1 November 2003
• Physics
• Optics letters

We demonstrate a three-dimensional (3-D) distributed refractometer that measures refractive index in a small volume. The sensor is based on an evanescent-wave fiber Bragg grating that is interrogated by low-coherence spectral interferometry. The measurement can be performed on a short time scale without the need for a mechanical scan. The new sensor was used to simultaneously measure glucose concentration in several droplets along a single sensor and to interrogate the time-dependent evaporation process of a water droplet. The new measurement technique might enable novel 3-D distributed sensors to be developed and multiple discrete measurements to be made in a small volume.