Journal article
Thermal hypersensitisation and grating evolution in Ge-doped optical fibre
Low temperature (sub 1000°C) thermal hypersensitisation is reported in germanosilicate optical waveguides. Gratings are written using a CW 266nm laser source. In contrast to laser hypersensitisation, thermal excitation is generally dispersive involving a range of specific glass sites. More complex grating profiles presenting evidence of solid-state autocatalysis and bistability at increasingly high sensitisation temperatures are observed.
More specifically, at 500°C, a behaviour resembling type IIA grating response is observed.
Language: | English |
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Year: | 2005 |
Pages: | 2276-2281 |
ISSN: | 10944087 |
Types: | Journal article |
DOI: | 10.1364/opex.13.002276 |