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In this paper, device structure and measurements on a diffractive optical modulator fabricated using a elastomer layer are reported. The device structure is fairly simple with an interdigitated bottom electrode, an elastomer layer, and a top electrode. Application of voltage to one of the bottom interdigitated electrodes causes an electrostrictive force, which, in turn, corrugates the elastomer layer. This method is used to create a configurable reflective phase grating that enables an analog control of the diffracted intensity. The major advantages of this method are the ease of fabrication and the simple device structure.
Selected Topics in Quantum Electronics, IEEE Journal of (Volume:10 , Issue: 3 )
Date of Publication: May-June 2004