Optical steganography based on amplified spontaneous emission noise

Ben Wu, Zhenxing Wang, Yue Tian, Mable P. Fok, Bhavin J. Shastri, Daniel R. Kanoff, Paul R. Prucnal

Research output: Contribution to journalArticlepeer-review

92 Scopus citations


We propose and experimentally demonstrate an optical steganography method in which a data signal is transmitted using amplified spontaneous emission (ASE) noise as a carrier. The ASE serving as a carrier for the private signal has an identical frequency spectrum to the existing noise generated by the Erbium doped fiber amplifiers (EDFAs) in the transmission system. The system also carries a conventional data channel that is not private. The so-called "stealth" or private channel is well-hidden within the noise of the system. Phase modulation is used for both the stealth channel and the public channel. Using homodyne detection, the short coherence length of the ASE ensures that the stealth signal can only be recovered if the receiver closely matches the delay-length difference, which is deliberately changed in a dynamic fashion that is only known to the transmitter and its intended receiver.

Original languageEnglish (US)
Pages (from-to)2065-2071
Number of pages7
JournalOptics Express
Issue number2
StatePublished - Jan 28 2013

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


Dive into the research topics of 'Optical steganography based on amplified spontaneous emission noise'. Together they form a unique fingerprint.

Cite this