Title :
Chirped gratings produced in photosensitive optical fibres by fibre deformation during exposure
Author :
Sugden, Kate ; Bennion, I. ; Molony, A. ; Copner, Nigel Joseph
Author_Institution :
Dept. of Electr. & Electron. Eng. & Appl. Phys., Aston Univ., Birmingham
fDate :
3/3/1994 12:00:00 AM
Abstract :
A technique for writing chirped-period gratings by UV holographic exposure in photosensitive optical fibres is reported. Results are presented for gratings produced in boron-germania codoped fibres, hydrogen-loaded high-germania fibres, and hydrogen-loaded standard telecommunications fibres, with performance parameters ranging from 99% reflectivity with 7.5 nm bandwidth, to ~5% reflectivity over >17 nm bandwidth
Keywords :
holographic gratings; optical fibres; reflectivity; GeO2:H; SiO2-GeO2-B2O3; UV exposure; bandwidth; boron-germania codoped fibres; chirped-period gratings; exposure; fibre deformation; holographic exposure; hydrogen-loaded high-germania fibres; hydrogen-loaded standard telecommunications fibres; performance parameters; photosensitive optical fibres; reflectivity; writing;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19940276
