Abstract
This is the first report, to our knowledge, of refractive-index grating side writing in 10 mol. % GeO2-doped fiber by the near-UV light of a cw laser (333–364 nm). An induced-index magnitude as large as at UV power density has been achieved. The observed gratings have exhibited the same temperature stability as gratings written by a KrF excimer laser (248 nm).
© 1997 Optical Society of America
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