75% enhancement of the second order nonlinearity in twin-hole fibres through voltage assisted cooling during poling

Abstract

A technique by which the second order nonlinearity of poled silica fibre is significantly increased is demonstrated. Voltage assisted cooling technique offers a significant increase in χ (2) compared to the standard thermal poling technique.

Bandwidth Control of Second Harmonic Generation through Chirped Period Poling of Optical Fibres

“…The twin-hole fibre device is then fusion spliced into one arm of an allfibre Mach-Zehnder interferometer. Thus the growth of the induced SON is monitored by the online measurement of the electro-optic coefficient through the change in phase in the fibre device during thermal poling [5]. A SON value of ~0.15 pm/V was measured for the fibre used for this experiment.…”