Stability of thermally hypersensitised phosphosilicate waveguides and the characteristic growth curve.
Low temperature (80 0 C) hypersensitised hydrogen-loaded phosphosilicate optical fibre is found to be unstable, decaying progressively at room temperature. However, the hypersensitisation process linearises the grating growth characteristic curve. Further, a negative index contribution is inferred at low fluence in the presence of hydrogen.
Canning
J
J
Hu
P F
PF