Correlation of ultraviolet-induced stress changes and negative index growth in type IIa germanosilicate waveguide gratings.
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.
Canning
J
J
Aslund
M
M