Spectral and temporal stealthy fiber-optic communication using sampling and phase encoding

被引：14
|
作者：
Yeminy, Tomer [1 ]
Sadot, Dan [2 ]
Zalevsky, Zeev [3 ]
机构：
[1] Ben Gurion Univ Negev, Dept Electroopt Engn, IL-84105 Beer Sheva, Israel
[2] Ben Gurion Univ Negev, Dept Elect & Comp Engn, IL-84105 Beer Sheva, Israel
[3] Bar Ilan Univ, Sch Elect Engn, IL-52900 Ramat Gan, Israel
来源：
OPTICS EXPRESS | 2011年 / 19卷 / 21期
关键词：
D O I：
10.1364/OE.19.020182
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose a method for covert fiber-optic communication in both frequency and time domains. The power spectral density of the pulse sequence bearing the information is spread in the frequency domain below the noise level by means of sampling. In addition, temporal phase encryption prevents the coherent addition of the various pulses in the frequency domain, further reducing the signal power spectral density. Thus, there is no need to transmit the signal within the bandwidth of a public user in order to spectrally conceal the signal. Temporal spreading of the pulse sequence is achieved by spectral phase encoding, resulting in a stealthy temporal and spectral transmission. (C) 2011 Optical Society of America
引用
收藏
页码：20182 / 20198
页数：17
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