Electro-optic control of the superprism effect in photonic crystals

Scrymgeour, David; Malkova, Natalia; Kim, Sungwon; Gopalan, Venkatraman
May 2003
Applied Physics Letters;5/12/2003, Vol. 82 Issue 19, p3176
Academic Journal
We have designed a two-dimensional photonic crystal in electro-optic materials that can actively control the superprism effect. By applying an electric field to the photonic crystal, the electro-optic effect will change the dielectric constant of the material, which modifies both the band structure and the dispersion surfaces. In the proposed structures, we show that electric fields of up to 6 V/μm in (Pb[SUB0.09]La[SUB0.91])(Zr[SUB0.65]Ti[SUB0.35])O[SUB3]-based photonic crystals can deflect light up to 49°. This device concept can be used for a class of optical modulation devices that can provide a local control of dispersion surfaces within a photonic crystal.


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