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Efficient grating writing through fibre coating with femtosecond IR radiation and phase mask

2007; Institution of Engineering and Technology; Volume: 43; Issue: 8 Linguagem: Inglês

10.1049/el

1350-911X

Stephen J. Mihailov, Dan Grobnic, Christopher W. Smelser,

Photonic Crystal and Fiber Optics

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 3.5×10−4 were induced with fibre strengths remaining at ∼85% of the pristine fibre value.