Abstract
The demand for better and faster security devices is a result of the problems created by unauthorized users and commercial spies gaining access to communication networks. One of the processes that has been extensively investigated is the optical encryption technique. Complex polarization-state manipulation by using computer-generated space-variant subwavelength gratings was observed. It was also observed that such polarization-state manipulations inevitably lead to a phase modification of geometrical origin. Geometrical phase encryption, which is realized by using an SWG, results in a robust and stable encryption scheme.
| Original language | English |
|---|---|
| Pages | 41 |
| Number of pages | 1 |
| Volume | 16 |
| No | 12 SPEC. ISS. |
| Specialist publication | Optics and Photonics News |
| State | Published - 1 Jan 2005 |
| Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering