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Quasi-light Storage for Optical Data Packets
Published on: February 6, 2014
40 Gb/s, secure optical communication based upon fast reconfigurable time domain spectral phase en/decoding with 40
1Joint Research Institute for Integrated Systems, Department of Electrical, Electronic & Computer Engineering, Heriot-Watt University, Riccarton, Edinburgh, UK.
Optics Letters
|November 18, 2011
Summary
This study presents a 40 Gb/s secure optical communication system using spectral phase encoding to prevent eavesdropping. The system enhances information security by creating overlapping signals, making unauthorized decoding difficult.
Area of Science:
- Optical Communications
- Information Security
- Signal Processing
Background:
- Traditional optical communication systems are vulnerable to eavesdropping.
- Power detector-based eavesdropping poses a significant security risk.
- High-speed data transmission requires robust security measures.
Purpose of the Study:
- To propose and demonstrate a secure 40 Gb/s optical communication system.
- To enhance information security against power detector eavesdropping.
- To investigate the impact of dispersion and chip modulation rate on security.
Main Methods:
- Utilizing a time domain spectral phase en/decoding scheme.
- Employing a highly dispersive element and high-speed phase modulator.
- Implementing fast reconfigurable optical codes with code lengths up to 1024.
Main Results:
- Demonstrated a 40 Gb/s secure optical communication system with on-off-keying (OOK) modulation.
- Achieved significant symbol overlapping for encoded and incorrectly decoded signals.
- Verified the influence of dispersion and chip modulation rate on signal overlapping.
- Showcased security enhancement compared to a 10 Gb/s system.
Conclusions:
- The proposed spectral phase en/decoding scheme effectively enhances security for high-speed OOK optical communication.
- Symbol overlapping is a key factor in preventing eavesdropping.
- The system offers a viable solution for secure high-speed data transmission.
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