Title :
Grating formation in a germanium free silicon oxynitride fibre
Author :
Dianov, E.M. ; Golant, K.M. ; Khrapko, R.R. ; Kurkov, A.S. ; Leconte, B. ; Douay, M. ; Bernage, P. ; Niay, P.
Author_Institution :
Acad. of Sci., Russia
Abstract :
We report Bragg grating writing in a novel germanium-free nitrogen-doped-silica-core pure-silica-cladding fibre. The fibres are shown to be photosensitive when exposed to 193 nm light beam. Refractive index changes higher than 8.4×104 have been achieved. The dynamics of growth of the Bragg gratings in the non-hydrogen-loaded fibre closely resembles Type IIA gratings in silicate fibres doped with a high concentration of germanium. The temperature stability of the gratings along with the good radiation resistance of N-doped silica fibres open up unique possibilities for many optoelectronic systems intended for use in hostile environment
Keywords :
diffraction gratings; 193 nm; 244 nm; Bragg grating writing; SiO2:N; Type IIA gratings; UV irradiation; doped-silica-core; growth dynamics; hostile environment use; isochronal annealing; oxynitride fibre; photoinduced index changes; photosensitive; pure-silica-cladding fibre; radiation resistance; reflectivity; refractive index changes; refractive index modulation; single mode fibre; temperature stability;
Conference_Titel :
Optical Fibre Gratings (Digest No. 1997/037), IEE Colloquium on
Conference_Location :
London
DOI :
10.1049/ic:19970238
