2 May 2014 Delay signature concealment in chaotic semiconductor ring lasers
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Abstract
We investigate different scenarios leading to simultaneous time-delay concealment both in the intensity and the phase dynamics generated from semiconductor ring lasers (SRLs) subject to delayed feedback. Under appropriate conditions, we found that the delay signature can be eliminated both in the intensity and the phase dynamics of SRLs with cross-feedback even when subject to long delayed feedback. For SRLs with self-feedback configuration, we also found that the concealment of short delay time is possible. The fact that such delay signatures can be eliminated in SRLs subject to short feedback opens the possibility of implementing secure communication schemes and random number generators on chip.
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Romain Modeste Nguimdo, Guy Verschaffelt, Jan Danckaert, Guy Van der Sande, "Delay signature concealment in chaotic semiconductor ring lasers", Proc. SPIE 9134, Semiconductor Lasers and Laser Dynamics VI, 913424 (2 May 2014); doi: 10.1117/12.2052186; https://doi.org/10.1117/12.2052186
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