The joint transform correlator (JTC) cryptosystem is a simple and practical optical
cryptosystem. However, the anti-attack capability of JTC cryptosystem is still needed to be …

A novel nonlinear encryption–decryption system based on a joint transform correlator (JTC)
and the Gyrator transform (GT) for the simultaneous encryption and decryption of multiple …

A security-enhanced joint transform correlator optical encryption system with cropping
operation is proposed in this paper. Cropping operation is usually used as an attack method …

We present a first implementation of an optical encryption setup in the fractional Fourier
domain using an electrically focus-tunable lens. Fractional Fourier transform cryptosystems …

In this Letter, we propose an opto-digital cryptosystem based on the joint transform correlator
architecture without the need for a reference beam, phase-shifting techniques, or an …

The majority of contemporary optical encryption techniques use coherent illumination and
suffer from speckle-noise pollution, which severely limits their applicability even when …

We consider the problem of achieving high stability and linearity of phase liquid-crystal
space-time light modulators, which are widely used for optical reconstruction of diffractive …

Quick response (QR) codes have recently become a popular data container for optical
encryption systems. Their effectiveness is based on the error-correction codes, that allow …

In this contribution, we introduce a new practical approach to apply the fractional Fourier
transform (FrFT) in the modeling of two optical systems: free space propagation (FSP) and a …

Рассмотрена проблема достижения высокой стабильности и линейности фазовых
жидкокристаллических пространственно-временны́ х модуляторов света, широко …