Local characterization of fiber-Bragg gratings through combined use of low-coherence interferometry and a layer-peeling algorithm.
The technique presented here allows us to obtain an accurate determination of the refractive index modulation amplitude, the mean effective index, and the chirp of fiber-Bragg gratings. A layer-peeling algorithm is used to extract this information from low-coherence interferometry measurements. Finally, we present a systematic study over 10 uniform and chirped gratings to proof the reliability and accuracy of this technique.
IREENA, Faculté des Sciences et Techniques de Nantes, 2 rue de la Houssinière, 44322, Nantes, France. xavier.chapeleau@univ-nantes.fr
Xavier
X
Chapeleau
Dominique
D
Leduc
Cyril
C
Lupi
Francisco
F
López-Gejo
Marc
M
Douay
Roger
R
Le Ny
Christian
C
Boisrobert