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OPTOELECTRONIC-FEEDBACK CONTROL OF CHAOTIC DYNAMICS IN EXTERNAL CAVITY LASER DIODES

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Abstract

Secure communication systems based upon chaotic encryption of data have recently attracted interest. An efficient algorithm for improving the locking rate between receiver and transmitter of such a system has been reported previously [1] and consideration has been given to techniques for the control of the nonlinear dynamics of lasers in general [2,3] and, in particular, laser diodes [4,5] which can function as practical transmitters in chaotic optical data encryption systems .In the present work an investigation has been undertaken of the use of continuous optoelectronic feedback in selecting periodic dynamics in external cavity laser diodes subject to conventional optical feedback .Other work has explored the control of chaos in external cavity laser diodes using occasional proportional feedback [6] and direct modulation [7,8].

© 1996 Optical Society of America

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