16 Gbps random bit generation using chaos in near-symmetric erbium-doped fiber ring laser.

Title 16 Gbps random bit generation using chaos in near-symmetric erbium-doped fiber ring laser.
Authors Pandey, A.; Sharma, A.; Krishnamurthy, P.Kumar
Journal Appl Opt
DOI 10.1364/AO.56.009526
Abstract

We demonstrate a bias-free random bit generator at 16 Gbps using chaos in a near-symmetric erbium-doped fiber (EDF) ring laser. The laser consists of two EDFs, each pumped at 980 nm, two intracavity filters of central wavelength 1549.30 nm, and two 90:10 output couplers. The presence of chaos at the laser output is demonstrated by computing the largest Lyapunov exponent for different embedding dimensions. The laser outputs are photodetected and subtracted to generate an electrical difference signal, which is then sampled at 2 GSa/s and postprocessed to extract random bits at 16 Gbps. The random bits exhibit very low autocorrelation (∼10-4) and have successfully passed all National Institute of Standards and Technology statistical tests and Diehard battery of tests.

Citation Pandey, A.; Sharma, A.; Krishnamurthy, P.Kumar.16 Gbps random bit generation using chaos in near-symmetric erbium-doped fiber ring laser..

Related Elements

Erbium

68 Er 167.259000000 Erbium

See more Erbium products. Erbium (atomic symbol: Er, atomic number: 68) is a Block F, Group 3, Period 6 element with an atomic radius of 167.259. Erbium Bohr ModelThe number of electrons in each of Erbium's shells is [2, 8, 18, 30, 8, 2] and its electron configuration is [Xe]4f12 6s2. The erbium atom has a radius of 176 pm and a Van der Waals radius of 235 pm. Erbium was discovered by Carl Mosander in 1843. Sources of Erbium include the mineral monazite and sand ores. Erbium is a member of the lanthanide or rare earth series of elements.Elemental Erbium Picture In its elemental form, erbium is soft and malleable. It is fairly stable in air and does not oxidize as rapidly as some of the other rare earth metals. Erbium's ions fluoresce in a bright pink color, making them highly useful for imaging and optical applications. It is named after the Swedish town Ytterby where it was first discovered.

Publish your research on the American Elements website