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Proceedings Paper

Sensitivity characteristics in thinned long-period tapered gratings
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Paper Abstract

In this work, a comparative study has been carried out to investigate the effects of cladding stripping on the external refractive index sensitivity in tapered and UV long period gratings. Here, wet chemical etching combined with microscopic analysis allow us to identify the experimental dependence of the surrounding refractive index (SRI) sensitivity on the cladding radius for both grating types. The experimental results reveal that although in both cases a sensitivity enhancement is achieved by reducing the cladding thickness, the tapered devices offer substantially a greater sensitivity gain in respect to UV written devices.

Paper Details

Date Published: 2 July 2007
PDF: 4 pages
Proc. SPIE 6619, Third European Workshop on Optical Fibre Sensors, 66192U (2 July 2007); doi: 10.1117/12.738552
Show Author Affiliations
A. Iadicicco, Univ. of Naples Parthenope (Italy)
Univ. of Sannio (Italy)
S. Campopiano, Univ. of Naples Parthenope (Italy)
A. Cutolo, Univ. of Sannio (Italy)
A. Cusano, Univ. of Sannio (Italy)
M. L. Korwin-Pawlowski, Univ. du Québec en Outaouais (Canada)
W. J. Bock, Univ. du Québec en Outaouais (Canada)

Published in SPIE Proceedings Vol. 6619:
Third European Workshop on Optical Fibre Sensors

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