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Optical steganography based on amplified spontaneous emission noise
Ben Wu1, Zhenxing Wang, Yue Tian
1Lightwave Communications Laboratory, Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544, USA. benwu@princeton.edu
Optics Express
|February 8, 2013
Summary
This study introduces a novel optical steganography technique using amplified spontaneous emission (ASE) noise to hide private data within existing system noise. The method ensures secure data transmission by requiring a specific receiver configuration for signal recovery.
Area of Science:
- Optical communication
- Information security
- Signal processing
Background:
- Existing optical communication systems generate amplified spontaneous emission (ASE) noise.
- Conventional data transmission lacks inherent security features for private signals.
- Optical steganography offers a method for covert data transmission.
Purpose of the Study:
- To propose and demonstrate a novel optical steganography method.
- To utilize amplified spontaneous emission (ASE) noise as a carrier for a private data signal.
- To ensure the private signal remains hidden within the system's inherent noise.
Main Methods:
- Transmitting a private data signal using ASE noise as a carrier.
- Employing phase modulation for both the private (stealth) and public data channels.
- Utilizing homodyne detection with a dynamically matched delay-length difference for signal recovery.
Main Results:
- Successfully demonstrated an optical steganography method using ASE noise.
- The private signal was effectively concealed within the system's background noise.
- The stealth channel's recovery was contingent on precise, dynamic delay-length matching.
Conclusions:
- The proposed optical steganography method provides a secure way to transmit private data.
- ASE noise can be effectively utilized as a carrier for covert communication.
- Dynamic delay-length matching is crucial for the secure recovery of the hidden signal.
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