Open AccessSpectral behavior of thin film coated cascaded tapered long period gratings in multiple configurations
Author(s) -
P. Pilla,
Pierluigi Foglia Manzillo,
M. Giordano,
Michael L. Korwin-Pawlowski,
Wojtek J. Bock,
A. Cusano
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.009765
Subject(s) - optics , materials science , refractive index , visibility , thin film , diffraction grating , optoelectronics , grating , nanotechnology , physics
In this work the spectral response of cascaded tapered long period gratings coated by nano-sized polymeric films has been investigated as function of the surrounding medium refractive index (SRI). The investigation was aimed to identify the best configuration in terms of coated/not coated areas in order to fully benefit of the SRI sensitivity enhancement due to the modal transition mechanism of nano-coated long period gratings while preserving the fringes visibility.