Canning J, Aslund M. Correlation of ultraviolet-induced stress changes and negative index growth in type IIa germanosilicate waveguide gratings.
OPTICS LETTERS 1999;
24:463-465. [PMID:
18071540 DOI:
10.1364/ol.24.000463]
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Abstract
The stress anisotropy in planar germanosilicate waveguides is used to follow the changes in stress, measured as a birefringence, with UV irradiation. Compressive stress increases with the growth of the negative index grating, saturating when the grating modulation saturates.
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