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Optics Letters

Optics Letters

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  • Vol. 36, Iss. 15 — Aug. 1, 2011
  • pp: 2833–2835

Wideband chaos generation using a delayed oscillator and a two-dimensional nonlinearity induced by a quadrature phase-shift-keying electro-optic modulator

Mourad Nourine, Yanne K. Chembo, and Laurent Larger  »View Author Affiliations


Optics Letters, Vol. 36, Issue 15, pp. 2833-2835 (2011)
http://dx.doi.org/10.1364/OL.36.002833


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Abstract

We present a new optoelectronic architecture intended for chaotic optical intensity generation. The principle relies on an electro-optic nonlinear delay dynamics, where the nonlinearity originates from an integrated four-wave optical interferometer, involving two independent electro-optic modulation inputs. Consequently, the setup involves both two-dimensional nonlinearity and dual-delay feedback dynamics, which results in enhanced chaos complexity of particular interest in chaos encryption schemes. The generated chaos observed with large feedback gains has a bandwidth ranging from 30 kHz to 13 GHz and is confirmed by numerical simulations of the proposed dynamical model and bifurcation diagram calculation.

© 2011 Optical Society of America

OCIS Codes
(190.3100) Nonlinear optics : Instabilities and chaos
(250.4745) Optoelectronics : Optical processing devices
(060.4785) Fiber optics and optical communications : Optical security and encryption

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: May 11, 2011
Revised Manuscript: June 17, 2011
Manuscript Accepted: June 18, 2011
Published: July 21, 2011

Citation
Mourad Nourine, Yanne K. Chembo, and Laurent Larger, "Wideband chaos generation using a delayed oscillator and a two-dimensional nonlinearity induced by a quadrature phase-shift-keying electro-optic modulator," Opt. Lett. 36, 2833-2835 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-15-2833

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