We present a new compact scheme to ensure high performance optical encryption. In this scheme, the encrypted data and the security key are recorded without need for a reference arm, resulting in a significant decrease in the size and complexity of the cryptosystem. The efficacy of the compact scheme to protect data is verified by encrypting and decrypting different inputs. We also test the resistance to both random noise and data loss. Additionally, the potential of the system is evaluated by encoding the data to be encrypted by means of a customized data container. In this way, we achieve a data volume reduction of 97% for the encrypted data while allowing for noise-free information recovery using the proposed cryptosystem. We experimentally demonstrate both encryption and volume reduction, confirming the validity and applicability of our proposal.

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We present an experimental off-axis optical holographic scheme employing a digital micromirror device (DMD) as projecting media instead of a liquid crystal spatial light modulator (SLM). The DMD allows projecting information through light reflection. We perform holographic recording in the Fourier and the Fresnel domains under similar experimental configurations to test our experimental scheme and verify the DMD performance as a binary amplitude SLM. For the digital holographic recovery process of Fourier holograms, we applied a non-linear modification that allows reducing the degradation in the recovered data. We also implement a multiplexing protocol enabling the packaging of an entire holographic dynamic scene into a single data. Furthermore, we use QR codes as information containers to achieve noise-free information recovery after holographic reconstruction. Experimental results demonstrate the viability and versatility of a DMD in an experimental holographic scheme.