Performance improvement of a cascaded tapered long period grating refractometer by using nano-sized high refractive index coatings

P. Pilla; P. Foglia Manzillo; M. Giordano; M. L. Korwin-Pawlowski; W. J. Bock; A. Cusano

doi:10.1117/12.785879

16 May 2008 Performance improvement of a cascaded tapered long period grating refractometer by using nano-sized high refractive index coatings

P. Pilla, P. Foglia Manzillo, M. Giordano, M. L. Korwin-Pawlowski, W. J. Bock, A. Cusano

Author Affiliations +

Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 70041V (2008) https://doi.org/10.1117/12.785879
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia

Abstract

In this work, nano-sized polymeric coatings with higher refractive index than the cladding one were used to induce the modal transition in tapered long period gratings in a cascaded configuration. The aim of this experimental investigation was to increase the sensitivity of the bare device to surrounding refractive index changes while preserving a good fringes visibility. An original configuration of the device in terms of coated/not coated area was identified that best achieve the aforementioned target.

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P. Pilla, P. Foglia Manzillo, M. Giordano, M. L. Korwin-Pawlowski, W. J. Bock, and A. Cusano "Performance improvement of a cascaded tapered long period grating refractometer by using nano-sized high refractive index coatings", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70041V (16 May 2008); https://doi.org/10.1117/12.785879

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