Title :
Formation of moire grating in core of germanosilicate fibre by transverse holographic double exposure method
Author :
Legoubin, S. ; Fertein, Eric ; Douay, Marc ; Bernage, P. ; Niay, P. ; Bayon, F. ; Georges, T.
Author_Institution :
Lab. de Spectroscopie Moleculaire, Univ. de Lille Flandres Artois, Villleneuve d´Ascq, France
Abstract :
The first demonstration of the feasibility of writing a moire grating into a germanosilicate fibre using double exposure by ultraviolet fringe patterns is reported. Using this technique a resonant filter response with a bandwidth of 0.2 nm centred around 1200 nm and with a finesse of 6 has been obtained.
Keywords :
diffraction gratings; fibre optics; germanium compounds; holography; moire fringes; optical fibres; optical filters; optical waveguide components; silicon compounds; GeO 2-SiO 2 fibre; finesse; glass fibre core; moire grating formation; resonant filter response; transverse holographic double exposure method; ultraviolet fringe patterns;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19911206
