DocumentCode
650381
Title
Noise suppression using modified NOLM for stealth signal receiving in optical steganography system
Author
Zhen Fei ; Pu Tao ; Fang Tao ; Zheng Jinlin ; Chen Yinfang ; Sun Dan
Author_Institution
Inst. of Commun. Eng., PLA Univ. of Sci. & Technol., Nanjing, China
fYear
2013
fDate
16-18 May 2013
Firstpage
630
Lastpage
633
Abstract
A modified nonlinear optical loop mirror (NOLM) by adding tunable bandpass filter (TBPF) is demonstrated for the stealth signal receiving in the optical steganography system. For the promotion of the noise suppressing ability, we investigate the optimal couple ratio, offset spectral and bandwidth of the TBPF in the NOLM. With the parameters we get, the modified NOLM can provide stable thresholding ability and improve the sensitivity of the stealth channel nearly 4dB over the classical NOLM.
Keywords
band-pass filters; interference suppression; mirrors; optical communication equipment; optical filters; optical information processing; steganography; modified NOLM; modified nonlinear optical loop mirror; noise suppression; optical steganography system; stealth signal receiving; tunable bandpass filter; Optical steganography; nonlinear optical loop mirror (NOLM); optical thresholding;
fLanguage
English
Publisher
ieee
Conference_Titel
Wireless and Optical Communication Conference (WOCC), 2013 22nd
Conference_Location
Chongqing
Print_ISBN
978-1-4673-5697-8
Type
conf
DOI
10.1109/WOCC.2013.6676451
Filename
6676451
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