Session C1: Poster Session (5:00 p.m.-6:00 p.m.)

5:00 PM–5:00 PM, Friday, May 16, 2008
Templeton Room: Fields Dining Hall

Chair: Kara Keeter, Idaho State University

Abstract ID: BAPS.2008.NWS.C1.6

Abstract: C1.00006 : Chaos Synchronization and Communication using Optoelectronic Time-Delay Feedback Circuits

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Authors:

  Christopher May
    (Reed College, Portland, OR)

  Lucas Illing
    (Reed College, Portland, OR)

We investigate experimentally a chaos communication scheme that is based on the synchronization of two optoelectronic circuits. Oscillations with frequencies of up to 10 GHz are generated in a single circuit by means of time-delayed and amplified feedback to a laser-pumped optoelectronic Mach-Zehnder modulator that serves as the nonlinearity. By varying the pump-laser power the device dynamics can be tuned from simple periodic to highly chaotic oscillations. Synchronization is achieved by unidirectionally coupling two circuits via a fiber-optic link and by matching them through fine-tuning the pump-laser powers and Mach-Zehnder bias voltages. Using these synchronized optoelectronic circuits we demonstrate communication by adding a message signal to the transmitter and successfully retrieving it from the chaotic carrier signal at the receiver.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2008.NWS.C1.6