Bragg gratings have been written through the polymer coating into hydrogen loaded SMF-28 fibres with ultrafast 800 nm radiation and a phase mask. Index modulations of up to 3.5times10-4 were induced with fibre strengths remaining at ~85% of the pristine fibre value
Published in:
Electronics Letters
(Volume:43
,
Issue:
8
)
Date of Publication: April 12 2007