Abstract
The fabrication of Bragg gratings in pure silica photonic crystal fibres using ultra-violet femtosecond laser radiation at 267 nm is reported. Gratings have been fabricated with a depth of up to 10 dB and an average index change of Δn> 4 × 10-4. Thermal annealing investigations indicate that our grating type is not type II.
Original language | English |
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Pages (from-to) | 638-640 |
Number of pages | 3 |
Journal | Electronics Letters |
Volume | 41 |
Issue number | 11 |
DOIs | |
Publication status | Published - 26 May 2005 |