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Second order nonlinearity in fibers and applications

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Abstract

The fabrication of in-fiber modulators with a second-order nonlinearity is investigated. A permanent strong electric field is recorded in fiber segments which gives them the linear electrooptic effect. Interferometry is used to transform phase- into intensity modulation. Vπ in the 100-V range is obtained, with an electrical bandwidth of tens of MHz. Various applications in photonics can then be exploited. Ways of improving the devices are discussed.

© 2012 Optical Society of America

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