Abstract

Compact voltage-controlled all-in-fiber polarization switches are designed and investigated based on dual-core photonic crystal fibers, by selectively infiltrating one of the fiber’s cores with a nematic liquid crystal. The electro-optical control of the liquid crystal core’s optical properties allows for the splitting of the two orthogonal polarizations, showing crosstalk values lower than 20dB in a 40 nm window at 1550 nm, for an ultracompact length less than 0.6 mm. With proper selection of the control voltage and the component length, dual-band operation with a crosstalk lower than 20dB is also demonstrated for the 1300 and 1550 nm telecom bands.

© 2013 Optical Society of America

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