论文信息 - Electro-optic modulation in germanosilicate fibre with UV-excited poling

Electro-optic modulation in germanosilicate fibre with UV-excited poling

The authors report what is, to their knowledge, the highest electro-optic effect measured in a germanosilicate fibre ever reported. The electro-optic effect based on a permanent second-order nonlinearity has been induced by UV-excited poling at 193 nm with an electric field >8*10/sup 5/ V/cm. Polarisation dependence of the V/sub pi /L product in a birefringent fibre has been observed, and the lowest V/sub pi /L product obtained for the TE mode of 32 Vcm, comparable to that based on r/sub 22/ of LiNbO/sub 3/, has been measured at 633 nm with a phase modulation at frequencies up to 5 MHz. >

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