Ultraviolet-induced absorption losses in hydrogen-loaded optical fibers and in presensitized optical fibers.
Reduced hydroxyl formation in presensitized fibers exposed to cw 244-nm light after hydrogen outdiffusion is reported. The OH band in the presensitized fiber shifts toward 1390 nm. In the fully hydrogen-loaded fiber the OH band is centered at 1397 nm and does not shift with fluence.
Canning
J
J
Aslund
M
M
Hu
P F
PF