Abstract

An improved image decryption system is proposed that is based on phase-encoded images and the principle of interference and uses a reference wave. A novel technique for generating intensity patterns from the decrypted phase information consists simply of interfering a reference wave with the wave passing through the encrypted image and a phase-only decrypting key. Optical experiments have confirmed the proposed technique as a simple and robust architecture for optical encryption.

© 2003 Optical Society of America

Comment on Interferometric phase-only optical encryption system that uses a reference wave

Jesper Glückstad, Vincent R. Daria, and Peter J. Rodrigo
Opt. Lett. 28(13) 1075-1076 (2003)

Reply to Comment on Interferometric phase-only optical encryption system that uses a reference wave

Dong-Hoan Seo and Soo-Joong Kim
Opt. Lett. 28(13) 1077-1077 (2003)

Optical image encryption by random shifting in fractional Fourier domains

B. Hennelly and J. T. Sheridan
Opt. Lett. 28(4) 269-271 (2003)

Phase-only optical encryption

Paul C. Mogensen and Jesper Glückstad
Opt. Lett. 25(8) 566-568 (2000)

Optical retrieval of encrypted digital holograms for secure real-time display

Osamu Matoba and Bahram Javidi
Opt. Lett. 27(5) 321-323 (2002)