Creating second-order nonlinearity in pure synthetic silica optical fibers by thermal poling.
A twin-hole optical fiber with pure synthetic silicate glass between the two electrode holes was thermally poled. The induced second-order nonlinearity (SON) was located at the core-cladding interface sections that were nearly parallel to the poling electric field. The polarization dependence of the induced SON suggests that nonlinearity was due to the presence of a space-charge field, which was probably formed by electron migration among the defects located at the core-cladding interface. The magnitude of the induced SON was measured to be approximately 0.06 pm /V.
An
Honglin
H
Optical Fiber Technology Centre, University of Sydney, 206 National Innovation Centre, Autralian Technology Park, Eveleigh, NSW, Australia. h.an@oftc.usyd.edu.au
Fleming
Simon
S