Noise enhancement of optical binary signals transmission

Year: 2001

Authors: Barbay S., Giacomelli G., Marin F.

Autors Affiliation: Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy; Dipartimento di Fisica, Università di Firenze, and LENS, Largo E. Fermi 2, 50125 Firenze, Italy and INFM, Unità di Firenze

Abstract: We report the evidence a novel phenomenon which is observed in VCSELs working in a bistable region, that we have called Noise Assisted Binary Information Transmission: the addition of noise to the pump current up to an optimal value leads to a strong improvement of the transmission quality, measured by the Bit Error Rate. We analyze different indicators to define the output string and the comparison of the input with the output signal is eventually reduced to a comparison of binary strings and can treated by means of standard methods of information theory. These results represent the first experimental evidence of Aperiodic Stochastic Resonance. We analyse the possible application to optical communications and compare it to a standard amplitude modulation scheme.

Journal/Review: PROCEEDINGS OF SPIE

Volume: 4354      Pages from: 135  to: 142

KeyWords: vcsel; binary transmission; polarization; stochastic process; optical communication
DOI: 10.1117/12.418819

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