Light modulator
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United States of America Patent
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Apr 21, 2015
Grant Date -
Apr 10, 2014
app pub date -
Oct 4, 2013
filing date -
Oct 4, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A light modulator includes a band-pass filter configured to select a wavelength of an incident light; a first layer; a second layer configured to include a trench with a bottom surface, a side surface, and a top surface; a thin metal film provided on the side surface of the trench of the second layer; and a dielectric layer provided between the first and second layers at the bottom and the top surfaces of the trench. An electric field is applied to the dielectric layer by using the first and second layers. The dielectric layer is provided between the thin metal film and the first layer at the side surface of the second layer so that the thin metal film has an anisotropic permittivity due to the electric field.
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