Demonstration of optical steganography transmission using temporal phase coded optical signals with spectral notch filtering.
A novel approach is proposed and experimentally demonstrated for optical steganography transmission in WDM networks using temporal phase coded optical signals with spectral notch filtering. A temporal phase coded stealth channel is temporally and spectrally overlaid onto a public WDM channel. Direct detection of the public channel is achieved in the presence of the stealth channel. The interference from the public channel is suppressed by spectral notching before the detection of the optical stealth signal. The approach is shown to have good compatibility and robustness to the existing WDM network for optical steganography transmission.
Hong
Xuezhi
X
Centre for Optical and Electromagnetic Research, State Key Laboratory of Modern Optical Instrumentation, JORCEP [KTH-ZJU Joint Research Center of Photonics], Zhejiang University, Hangzhou 310058, China.
Wang
Dawei
D
Xu
Lei
L
He
Sailing
S