Time-delay signature suppression in a chaotic semiconductor laser by fiber random grating induced distributed feedback

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TypeArticle
Journal titleOptics
Article numberarXiv:1703.07444
Pages# of pages: 16
AbstractWe demonstrate that a semiconductor laser perturbed by the distributed feedback from a fiber random grating can emit light chaotically without the time delay signature. A theoretical model is developed based on the Lang-Kobayashi model in order to numerically explore the chaotic dynamics of the laser diode subjected to the random distributed feedback. It is predicted that the random distributed feedback is superior to the single reflection feedback in suppressing the time-delay signature. In experiments, a massive number of feedbacks with randomly varied time delays induced by a fiber random grating introduce large numbers of external cavity modes into the semiconductor laser, leading to the high dimension of chaotic dynamics and thus the concealment of the time delay signature. The obtained time delay signature with the maximum suppression is 0.0088, which is the smallest to date.
Publication date
PublisherCornell University Library
Linkhttps://arxiv.org/abs/1703.07444
LanguageEnglish
AffiliationNational Research Council Canada; Security and Disruptive Technologies
Peer reviewedNo
NPARC number23001811
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Record identifierc1bdc7bf-076c-4f82-9f6d-e257597c1aee
Record created2017-04-10
Record modified2017-04-10
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