Eur. Phys. J. Plus (2017) 132: 492
https://doi.org/10.1140/epjp/i2017-11786-y

Regular Article

Communication scheme using a hyperchaotic semiconductor laser model: Chaos shift key revisited

¹ School of Foundation Studies National Defence, University of Malaysia, Kuala Lumpur, Malaysia
² Basic Sciences and Humanities Department, Calcutta Institute of Engineering and Management, Kolkata, India
³ Department of Mathematics, Sivanath Sastri College, Kolkata, India
⁴ Institute for Mathematical Research, Universiti Putra Malaysia, 43400, UPM Serdang, Malaysia
⁵ Malaysia-Italy Centre of Excellence for Mathematical Science, Universiti Putra Malaysia, Serdang, Malaysia
⁶ Ha Tinh University, Ha Tinh, Vietnam

^* e-mail: skpalit19@gmail.com

Received: 28 September 2017
Accepted: 22 October 2017
Published online: 27 November 2017

Abstract

Based on the Maxwell-Bloch equations, we considered a five-dimensional ODE system, describing the dynamics of a semiconductor laser. The system has rich dynamics with multi-periodic, chaotic and hyperchaotic states. In this analysis, we have investigated the hyperchaotic nature of the aforesaid model and proposed a communication scheme, the generalized form of chaos shift keys, where the coupled systems do not need to be in the synchronized state. The results are implemented with the hyperchaotic laser model followed by a comprehensive security analysis.