Abstract
We propose a novel method using iterative phase retrieval for simultaneously generating two phase-only masks with silhouette removal in interference-based optical encryption system. Different from previous works, an iterative phase retrieval algorithm is developed for simultaneously generating two phase-only masks in the different optical paths, and no additional keys (or masks) or complementary algorithms are required. Silhouette problem inherent in conventional interference-based encryption method is fully resolved, and the higher security can be correspondingly achieved.
Original language | English |
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Pages (from-to) | 133-138 |
Number of pages | 6 |
Journal | Optics Communications |
Volume | 331 |
DOIs | |
Publication status | Published - 15 Nov 2014 |
Externally published | Yes |
Keywords
- Interference
- Optical encryption
- Phase retrieval
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering