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Updated: Jun 10, 2025

Quasi-light Storage for Optical Data Packets

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Non-volatile and Secure Optical Storage Medium with Multilevel Information Encryption.

Jie Shao¹, Xiyang Li¹, Meng Liu¹

¹College of Physics and Technology, Guangxi Normal University, Guilin, 541004, China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)

|October 16, 2024

Summary

Researchers developed a novel non-volatile optical storage medium using photomodulated Ba3MgSi2O8:Eu3+ for secure data encryption. This material offers dual-level storage channels, enhancing data security and enabling simultaneous writing and erasing.

Keywords:

information security light‐induced valence multilevel optical storage photochromism

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Area of Science:

Materials Science
Optoelectronics
Data Storage

Background:

Non-volatile photomemory offers advantages over voltage-driven memory but faces challenges in data security due to volatility and single-level storage.
Conventional materials lack sufficient trap depth and multilevel storage capabilities, hindering secure data encryption.

Purpose of the Study:

To develop a robust, non-volatile, multilevel optical storage medium for secure data encryption.
To leverage photomodulated luminescence and photochromic phenomena for enhanced data security.

Main Methods:

Utilized a Ba3MgSi2O8:Eu3+ host material for photomodulated luminescence and photochromic effects.
Employed alternating 265 nm and 365 nm light stimuli for simultaneous writing and erasing of dual-level optical signals.
Performed theoretical calculations to understand defect-induced color centers and trap depths.

Main Results:

Achieved a non-volatile, multilevel optical storage medium with dual-level storage channels in a single host.
Demonstrated high luminescent and color contrasts (>90%) for improved data storage security.
Confirmed excellent reversibility and long-term storage capability due to robust color centers and suitable trap depths.

Conclusions:

The developed Ba3MgSi2O8:Eu3+ material provides a novel approach for constructing multilevel information storage channels.
Dual-level optical signals can be accurately decrypted by probing Eu2+ and Eu3+ signals, ensuring information security.
This research offers a promising solution for advanced data encryption and secure information storage.