G. N. de Oliveira

Papers

Total Citations

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About

G. N. de Oliveira is a researcher whose work lies at the intersection of holography, photorefractive optics, and optical security. Their primary contributions focus on the development of novel methods for generating secure numerical codes using dynamic moiré fringe patterns. In their most cited work, "Photorefractive holographic moiré-like patterns for secure numerical code generation" (2013, 3 citations), de Oliveira proposed the use of low-frequency photorefractive holographic moiré patterns as a secure means for data storage and transmission. This was further refined in "Digital holographic moiré pattern for optical numerical code generation" (2014, 2 citations), where they experimentally demonstrated the superposition of two sinusoidal gratings with slightly different pitches in a Bi₁₂TiO₂₀ photorefractive crystal to generate these codes. While their citation counts are modest, de Oliveira’s work represents a creative and early exploration of optical encryption techniques, combining fundamental photorefractive effects with practical application in secure communications. Their research offers a foundation for future innovations in holographic security systems.