Abstract

Vanadium dioxide (VO2) is used to implement an electrically addressable beam splitter with continuously variable splitting ratios. The electrical control of temperature in a thin VO2 layer is used to vary its transmission/reflection behavior. The technique is characterized for various incidence angles, s- and p-polarizations, and the wavelength range of 400–2000 nm. Splitting ratios continuously tunable over four orders of magnitude are reported.

© 2013 Optical Society of America

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