Fully photonics-based physical random bit generator
We propose a fully photonics-based approach for ultrafast physical random bit generation. This approach exploits a compact nonlinear loop mirror (called a terahertz optical asymmetric demultiplexer, TOAD) to sample the chaotic optical waveform in an all-optical domain and then generate random bit st...
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Published in | Optics letters Vol. 41; no. 14; p. 3347 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
15.07.2016
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Online Access | Get more information |
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Summary: | We propose a fully photonics-based approach for ultrafast physical random bit generation. This approach exploits a compact nonlinear loop mirror (called a terahertz optical asymmetric demultiplexer, TOAD) to sample the chaotic optical waveform in an all-optical domain and then generate random bit streams through further comparison with a threshold level. This method can efficiently overcome the electronic jitter bottleneck confronted by existing RBGs in practice. A proof-of-concept experiment demonstrates that this method can continuously extract 5 Gb/s random bit streams from the chaotic output of a distributed feedback laser diode (DFB-LD) with optical feedback. This limited generation rate is caused by the bandwidth of the used optical chaos. |
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ISSN: | 1539-4794 |
DOI: | 10.1364/ol.41.003347 |