Index TermsâBrillouin scattering, Fiber lasers, Random number generation, Rayleigh scattering. I. INTRODUCTION andom number generation (RNG) plays a ...
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REPLACE THIS LINE WITH YOUR PAPER IDENTIFICATION NUMBER (DOUBLE-CLICK HERE TO EDIT) < statistical test [21], while the extracted sequences generated at a bit rate higher than 71 Mbps failed the stringent NIST tests, which is consistent with the bandwidth of the chaotic oscillations in the RBFL. The results of the 15 standard tests listed in Table 1. TABLE I Test name
P-value
Frequency Block Frequency Cumulative Sums Runs Longest Run Rank FFT Nonoverlapping Template Overlapping Template Universal Approximate Entropy Random Excursions Random Excursions Variant Serial Linear Complexity
0.304126 0.911413 0.236810 0.595549 0.006661 0.702782 0.289667 0.012650 0.249284 0.086332 0.839926 0.116593 0.291604 0.401199 0.699313
Proportio n 100/100 99/100 100/100 97/100 100/100 99/100 99/100 95/100 99/100 100/100 96/100 99/100 99/100 97/100 97/100
Results Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass
Table 1. NIST Test Results, using 100 samples of 1 Mb and significance level. For the tests that produce multiple P-values values the worst (lowest) value, and the corresponding proportion was tabulated.
V. CONCLUSION In conclusion, we demonstrate a non-uniform fiber based Brillouin random fiber laser for truly random number generation with the enhanced bit rate of 71 Mbps. With bi-directional pumping, a non-uniform fiber is utilized to act as a Brillouin gain medium and distributed Rayleigh feedback for random lasing oscillation. Owing to Brillouin frequency distribution along the non-uniform fiber, multiple random modes occur in the broadband gain profile. Simulations show that bit rate random number by using non-uniform fiber could be extended by one or two order of magnitude, breaking through the intrinsic limitation of 10 MHz in SMF. Consequently, the random dynamics of non-uniform fiber based BRFL outputs offers a physical entropy source for true random number generation with an extended bit rate of 71 Mbps, passing the NIST statistical test.
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