Patent ID: 6211993
Filing Date: 2001-04-03
Classification: G02F,Y10T

Abstract:
A solid state device for amplitude modulation of an incident light beam comprising:a planar substrate;a first planar electrical conduction and partially light reflection and partially light transmission means disposed atop said substrate and having contacts for connecting to an external voltage generator;a solid state ferroelectric thin film disposed atop said first electrical conduction and partially light reflection and partially light transmission means;a second planar electrical conduction and partially light reflection and partially light transmission means disposed atop said solid state ferroelectric thin film and having contacts for connecting to said external voltage generator; andan external voltage generator means for providing a voltage across said ferroelectric thin film,whereby an electric field is generated within said ferroelectric thin film normal to the plane of said film, a change in optical path length results, and the reflected and transmitted portions of an incident light beam are modulated in amplitude.