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Compact and low-latency scheme for optical steganography using chirped fibre Bragg gratings

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2 Author(s)
Fok, M.P. ; Lightwave Commun. Res. Lab., Dept. of Electr. Eng., Princeton Univ., Princeton, NJ ; Prucnal, P.R.

A compact and low-latency approach for optical steganography has been experimentally demonstrated using a matched pair of chirped fibre Bragg gratings. A stealth WDM channel is temporally and spectrally hidden underneath a public optical code division multiple access signal. With the use of chirped fibre Bragg gratings, the length of the pulse compressor/decompressor is reduced by a factor of 2000. The power penalty on the public channel is <1 dB when the stealth signal has a power of 10 dB lower than the public channel.

Published in:

Electronics Letters  (Volume:45 ,  Issue: 3 )