Enhancement of sensitivity in long-period fiber gratings with deposition of low-refractive-index materials.

@article{Villar2005EnhancementOS,
  title={Enhancement of sensitivity in long-period fiber gratings with deposition of low-refractive-index materials.},
  author={Ignacio Del Villar and Ignacio R. Mat{\'i}as and Francisco J. Arregui},
  journal={Optics letters},
  year={2005},
  volume={30 18},
  pages={2363-5}
}
It was proved [Opt. Lett. 30, 720 (2005)] that the deposition of an overlay of higher refractive index than that of the cladding on a long-period fiber grating (LPFG) causes large shifts in the attenuation bands induced by the grating. The result is an enhancement of the sensitivity of the LPFG to variations in the ambient and overlay refractive indices or the overlay thickness. The limitation of the previous design to materials with higher refractive indices than that of the cladding of the… CONTINUE READING

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