Title :
Optical Steganography Over a Public DPSK Channel With Asynchronous Detection
Author :
Wang, Zhenxing ; Prucnal, PAul R.
Author_Institution :
Dept. of Electr. Eng., Princeton Univ., Princeton, NJ, USA
Abstract :
We propose to apply optical steganography to public differential phase-shift keying (DPSK) transmission by transmitting a stealth amplitude-modulated signal through a DPSK link. The secretly transmitted signal is temporally stretched with chirped fiber-Bragg gratings (CFBGs), and therefore, can be hidden under public DPSK signals. The stealth signal is successfully recovered and detected asynchronously, without clock synchronization with the transmitter.
Keywords :
Bragg gratings; amplitude modulation; chirp modulation; differential phase shift keying; optical fibre communication; optical fibres; optical modulation; steganography; amplitude-modulated signal; asynchronous detection; chirped fiber-Bragg gratings; differential phase-shift keying; optical steganography; public DPSK channel; stealth signal; Bragg gratings; Noise; Optical fiber amplifiers; Optical filters; Optical receivers; Asynchronous detection; differential phase-shift keying (DPSK); optical steganography;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2090516
