The most common optical amplified spontaneous emission sources can become the ultimate tools for the generation of ultra-broadband truly random bit sequences (TRBS). By using a straightforward configuration we experimentally prove that the amplified spontaneous emission noise of an optical amplifier—either an Er+3-doped fiber amplifier (EDFA) or an InGaAs semiconductor optical amplifier (SOA)—is an efficient source for TRBS generation. A bit rate up to 560 Gb/s has been recorded, seeded by the direct detection of the unfiltered spontaneous-spontaneous (sp-sp) optical intensity beat noise on a broadband photoreceiver. The generation rate is practically limited only by the detection bandwidth, the electronic digitization process and the post-processing circuitry. The proposed mechanism passes the existing benchmarks of randomness.
© 2012 IEEE
Apostolos Argyris, Evangelos Pikasis, Stavros Deligiannidis, and Dimitris Syvridis, "Sub-Tb/s Physical Random Bit Generators Based on Direct Detection of Amplified Spontaneous Emission Signals," J. Lightwave Technol. 30, 1329-1334 (2012)