OPTICAL DEVICE AND METHODS

摘要

We describe methods and devices for manipulating optical signals. A method of manipulating an optical signal comprises providing a device (100 ) comprising a layer (106 ) of blue phase liquid crystal in the path of the optical signal; and applying a dynamically varying spatial pattern of voltages across the layer (106 ) of blue phase liquid crystal, thereby causing the refractive index of the layer (106 ) of blue phase liquid crystal to vary according the dynamically varying spatial pattern.